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Aug 09, 2018

Lake Simcoe, ON

Twin waterspout tornadoes spin over Lake Simcoe, residents watch from Beaverton

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Aug 09, 2018

Lake Simcoe, ON

Twin waterspout tornadoes spin over Lake Simcoe, residents watch from Beaverton

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Jul 29, 2018

Morpeth, ON

Landspout tornado swirls through crops between Morpeth & Clearview, Chatham-Kent

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Jul 26, 2018

White Lake, ON

Waterspout tornado comes ashore off White Lake, minor tree & property damage

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Jul 26, 2018

Lake Simcoe, ON

Waterspout tornado spins over Lake Simcoe near Orillia, photographed by boaters

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Jun 17, 2018

Englehart, ON

Multiple vortex / stovepipe tornado rips through 9km of forest west of Englehart

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Jun 13, 2018

Waterford - Jarvis, ON

EF2 tornado rips 32km from Waterford to Jarvis in Haldimand & Norfolk counties

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Jun 13, 2018

Norwich, ON

EF0 tornado near Norwich caught on video, whirls through field without damage

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The cataloguing of tornadoes in Ontario is a function of Environment Canada. In recent years, with the Tornadoes in Ontario Project, Environment Canada has undertaken the documentation of all known tornado events in the province, past and present. This has been the work of researcher David M. L. Sills, one of Canada’s preeminent severe weather scientists, along with Sarah J. Schriver and Patrick W. S. King. The information above is derived primarily from Environment Canada Special Weather Summaries and from official files and reports that are available in the archives at the Environment Canada Library, Downsview. To fill out the stories of these tornadoes, media accounts have been used to supplement that official data. Tornadoes classified as probable or confirmed are included herein.

Tornadoes in Ontario 2017

The 2017 tornado season got off to an early start on April 11 when an unexpected group of supercells developed along the lake breeze convergence zone north of Lake Erie. One of them spawned a brief, white cone tornado that snapped trees and power poles and damaged a barn near Thamesford.

Sep 22, 2017

Kenora, ON

Probable tornado leaves path of tree damage, one of three tornadoes in region

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Sep 22, 2017

Kenora, ON

Strongest of three tornadoes in Kenora woodland leaves EF1 damage through forest

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Sep 22, 2017

Werner Lake, ON

Trees knocked down & cabin damaged as tornado whips through Werner Lake property

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Aug 11, 2017

Leamington, ON

Photogenic cone tornado touches down E of town, damages properties & greenhouses

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Aug 11, 2017

Hawkesville, ON

Close call for Elmira as cone tornado rips through & damages Hawkesville farms

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Aug 04, 2017

Huntsville, ON

Tornado whips from Fairy Lake to Rebecca Lake, damages trees, homes and cottages

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Aug 04, 2017

Rebecca Lake, ON

EF2 tornado leaves swath of decimated forest & damaged cottages NE of Huntsville

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Aug 04, 2017

Utterson, ON

Tornado touches down on village outskirts, leaves path of tree & property damage

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Jul 20, 2017

Timmins, ON

Tornado touches down at Victor M. Power Airport, causes damage in nearby forest

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Jul 12, 2017

Georgina Island, ON

Awesome, snake-like waterspout swirls across Simcoe as cottagers watch in awe

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Jul 12, 2017

Lucan, ON

Cone tornado touches down north of town, causes minor damage to rural properties

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Jul 12, 2017

Drumbo, ON

Residents watch, film & photograph as white cone tornado touches down near town

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Jul 06, 2017

Ottertrack Lake, ON

Supercell crosses Quetico Provincial Park, spawns tornado that decimates forest

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Jun 14, 2017

Dryden, ON

EF1 tornado slices across the east side of Dryden, damages trees & properties

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Apr 11, 2017

Thamesford, ON

Cone tornado touches down north of town, snaps trees & power poles, damages farm

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The cataloguing of tornadoes in Ontario is a function of Environment Canada. In recent years, with the Tornadoes in Ontario Project, Environment Canada has undertaken the documentation of all known tornado events in the province, past and present. This has been the work of researcher David M. L. Sills, one of Canada’s preeminent severe weather scientists, along with Sarah J. Schriver and Patrick W. S. King. The information above is derived primarily from Environment Canada Special Weather Summaries and from official files and reports that are available in the archives at the Environment Canada Library, Downsview. To fill out the stories of these tornadoes, media accounts have been used to supplement that official data. Tornadoes classified as probable or confirmed are included herein.

Tornadoes in Ontario 2016

The 2016 tornado season in Ontario was relatively quiet but not unremarkable. The season got off to an historic start when the province’s earliest tornado on record touched down on March 16. It was an EF1 twister that struck northern Wellington County near Mount Forest, carving a path of damage through area farms. However, following this unusual Winter tornado the season ground to a halt, without a single tornado touching down in April, May or June. Finally, two weak tornadoes touched down on July 1st, breaking the dry spell briefly, and then no tornadoes occurred again until August 11. This landspout struck the community of Delaware, and was the first of five tornadoes that touched down during the month, an uptick in activity boosted the tornado count to near normal. By far the most notable and impactful event of the year occurred on August 24, when a pair of photogenic and damaging tornadoes struck the town of LaSalle and the nearby city of Windsor. The Windsor tornado was a high-end EF2 that damaged homes, destroyed factories and left four people injured. The final tornado of the year was an EF0 that touched down on September 10 near the town of Bloomfield in Prince Edward County.

Oct 17, 2016

Stayner, ON

Late-season tornado sweeps through Stayner, snaps & uproots trees, flips trailer

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Sep 10, 2016

Bloomfield, ON

Tornadic waterspout develops on lake, hits land near trailer park & tracks 3km

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Aug 30, 2016

New Liskeard, ON

Area residents capture photos & videos as pretty white tornado passes near town

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Aug 24, 2016

Windsor, ON

Destructive tornado slices through Windsor, leaves path of damage, four injured

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Aug 24, 2016

LaSalle, ON

Cone tornado cuts through town, leaves trail of snapped trees & damaged homes

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Aug 17, 2016

Little Current, ON

Tornadic waterspout moves ashore over peninsula, narrowly misses tailer home

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Aug 13, 2016

Port Bolster, ON

Witnesses observe tornado at Sunset Beach, leaves path of damage to Port Bolster

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Aug 13, 2016

Ashburn, ON

Tornado sideswipes & narrowly misses house, leaves extensive crop & tree damage

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Aug 11, 2016

Delaware, ON

Photogenic landspout tornado touches down in town, causes minor damage to homes

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Jul 01, 2016

Swift Rapids, ON

Cone tornado tears narrow path through forest along the Severn River shoreline

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Jul 01, 2016

Buckhorn Lake, ON

Stunned Canada Day cottagers watch & film as tornado swirls across Buckhorn Lake

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Mar 16, 2016

Clifford, ON

Early-season tornado strikes rural properties, damages & destroys farm buildings

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The cataloguing of tornadoes in Ontario is a function of Environment Canada. In recent years, with the Tornadoes in Ontario Project, Environment Canada has undertaken the documentation of all known tornado events in the province, past and present. This has been the work of researcher David M. L. Sills, one of Canada’s preeminent severe weather scientists, along with Sarah J. Schriver and Patrick W. S. King. The information above is derived primarily from Environment Canada Special Weather Summaries and from official files and reports that are available in the archives at the Environment Canada Library, Downsview. To fill out the stories of these tornadoes, media accounts have been used to supplement that official data. Tornadoes classified as probable or confirmed are included herein.

Tornadoes in Ontario 2015

The 2015 storm season got off to a slow start, and remained quiet throughout. As of mid-July, only a handful of low-end severe weather days had occurred, two of which produced tornadoes. The first confirmed tornado of 2015, struck between the communities of Thordale and Bryanston on May 30, damaging trees and tearing the roof off of a barn; the second caused minor damage near Holmesville on June 22. The most notable event of the season occurred on August 2, when an EF2 tornado damaged trees, barns and houses, one of them severely, on the north side of Teviotdale. This was one of four tornadoes to touch down this day, two of which were rated EF2. Later in the month, on August 19, an EF1 tore through forest in the Kapuskasing area. The final tornado of the 2015 storm season in Ontario occurred at Consiton, near Sudbury, on October 15. That tornado was a slender and photogenic elephant trunk that caused minor damage in the town, bringing to a close a relatively quiet season in the province.

Oct 15, 2015

Coniston, ON

EF0 tornado touches down in Coniston, trees snapped, shingles ripped from roofs

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Aug 19, 2015

Kapuskasing, ON

Tornado decimates 7km swath of forest, dissipates just southwest of town

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Aug 19, 2015

Kapuskasing, ON

Pilot finds swath of tree damage northeast of Kapuskasing, EF1 tornado confirmed

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Aug 02, 2015

Marsville, ON

Extensive damage to trees, farms near Marsville after EF1 tornado passes through

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Aug 02, 2015

Teviotdale, ON

EF2 tornado hits Teviotdale, damage is extensive with barns & houses destroyed

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Aug 02, 2015

Lebanon, ON

EF2 tornado strikes Lebanon area with extensive damage to trees and outbuildings

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Aug 02, 2015

Millgrove, ON

EF1 tornado hits Hamilton community of Millgrove with damage to trees and houses

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Jun 22, 2015

Holmesville, ON

Storm chaser photographs cone tornado near Goderich, minimal damage reported

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May 30, 2015

Bryanston, ON

Tornado touches down at farm between Bryanston & Thorndale, damages trees & barn

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The cataloguing of tornadoes in Ontario is a function of Environment Canada. In recent years, with the Tornadoes in Ontario Project, Environment Canada has undertaken the documentation of all known tornado events in the province, past and present. This has been the work of researcher David M. L. Sills, one of Canada’s preeminent severe weather scientists, along with Sarah J. Schriver and Patrick W. S. King. The information above is derived primarily from Environment Canada Special Weather Summaries and from official files and reports that are available in the archives at the Environment Canada Library, Downsview. To fill out the stories of these tornadoes, media accounts have been used to supplement that official data. Tornadoes classified as probable or confirmed are included herein.

Tornadoes in Ontario 2014

Following the 2013 season which saw many tornadoes but little damage, 2014 got off to a destructive start. The first tornadoes of the season, an EF0 and an EF1, touched down in mid-May, one of which damaged trees, barns, and partially unroofed a house near Mildmay. Then, the following month, a high-end EF2 tornado tore through the town of Angus, damaging over a hundred houses, a number of which were destroyed. Early estimates placed the damage at over $25 million, making it the most damaging twister in the province since the Goderich tornado of 2011. A second tornado that day, a high-end EF1, caused extensive damage to a farm at Stroud. One week later, two more EF1 tornadoes damaged trees, barns and rural homes near the communities of New Tecumseth and Laurel Station. Four tornadoes touched down in July, including an EF1 at the end of the month near Grand Bend that produced considerable tree damage just south of town.

Oct 06, 2014

Sheffield, ON

Nighttime tornado tracks through Sheffield, causing EF1 damage to trees & homes

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Sep 05, 2014

Christian Island, ON

Tornado passes across Christian Island from Georgian Bay, but only minor damage

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Sep 05, 2014

Udney, ON

EF1 tornado hits Udney, damaging rural properties and tearing apart local park

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Aug 20, 2014

Erin, ON

Weak tornado caught on camera by local residents as it touches down near Erin

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Aug 19, 2014

Windsor, ON

Minor damage to trees and homes as EF0 tornado tracks through southwest Windsor

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Aug 19, 2014

Harrow, ON

Weak EF0 tornado touches down near Harrow, causes minor damage at a local farm

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Aug 05, 2014

Grassy Narrows First Nation, ON

Witnesses watch as weak EF0 tornado strikes Grassy Narrows First Nation

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Jul 27, 2014

Grand Bend, ON

EF1 tornado slams Grand Bend area, leaves extensive damage, one serious injury

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Jul 27, 2014

Millbank, ON

Brief touchdown but no damage as EF0, pencil-shaped tornado drops near Millbank

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Jul 15, 2014

Lake Nipissing, ON

No damage caused as weak tornado touches down over eastern Lake Nipissing

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Jul 15, 2014

North Bay, ON

Weak tornado captured on camera as it passes near the North Bay airport

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Jul 07, 2014

Norwich, ON

EF0 landspout tornado strikes near Norwich, passes through fields without damage

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Jun 30, 2014

Bear Lake, ON

Fishermen stunned as EF0 cone tornado touches down & passes across Bear Lake

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Jun 24, 2014

Laurel Station, ON

EF1 tornado hits Laurel Station area, leaves significant damage to homes & trees

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Jun 24, 2014

New Tecumseth, ON

Trees, homes and barns extensively damaged as EF1 tornado strikes New Tecumseth

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Jun 17, 2014

Angus & Tracks to Barrie, ON

EF2 tornado hits Angus, dozens of homes damaged & destroyed, $25M in damage

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Jun 17, 2014

Stroud, ON

Following EF2 at Angus, second tornado causes high-end EF1 damage at Stroud

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May 13, 2014

Mildmay, ON

House & barns significantly damaged as EF1 tornado strikes outskirts of Mildmay

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May 13, 2014

Listowel, ON

Weak EF0 tornado passes between Listowel & Conestoga Lake but no damage results

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The cataloguing of tornadoes in Ontario is a function of Environment Canada. In recent years, with the Tornadoes in Ontario Project, Environment Canada has undertaken the documentation of all known tornado events in the province, past and present. This has been the work of researcher David M. L. Sills, one of Canada’s preeminent severe weather scientists, along with Sarah J. Schriver and Patrick W. S. King. The information above is derived primarily from Environment Canada Special Weather Summaries and from official files and reports that are available in the archives at the Environment Canada Library, Downsview. To fill out the stories of these tornadoes, media accounts have been used to supplement that official data. Tornadoes classified as probable or confirmed are included herein.

Tornadoes in Ontario 2013

2013 was a notable year for tornadoes in Ontario for a number of reasons. The season started on April 18th, earlier than usual, when an EF1 tornado tore apart a large indoor riding arena near Shelburne, scattering debris for over a kilometer. This event was particularly significant for it was the first tornado in Canada to be rated using the Enhanced Fujita Scale. Two months later, on May 21st, three tornadoes touched down to the northwest and to the east of Lake Simcoe, with one at Glenarm rated EF2 – the season’s strongest. That tornado damaged and destroyed barns, knocked down trees and power lines, and tore the roof and an exterior wall off of a house. Tornadoes in central and eastern areas of the province were the name of the game this year and, in terms of geographic distribution, made this tornado season unique. Not a single twister was documented in Southwest Ontario, the province and the country’s most tornado-prone region. Indeed, every tornado recorded in 2013 occurred to the north and east of Wellington County… and there were a lot of tornadoes recorded! The season saw a total of eighteen confirmed tornadoes, considerably more than the yearly average of twelve. Five of these touched down on August 7th, in the largest outbreak since the record-setting nineteen tornado outbreak of 2009. The tornadoes on August 7th were extremely well-documented by both amateurs and chasers, uniquely photogenic for Ontario. Photogentic storms were unusually common in 2013 and, along with the higher-than-average number of twisters and lack of injuries or extensive damage, made the year a good one for storm chasers and enthusiasts in Ontario.

Nov 23, 2013

Charleville, ON

Rare late-season tornado hits Charleville area, causes EF1 damage to local farms

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Sep 01, 2013

Fergus, ON

Storm chaser films as EF0 tornado touches down in Fergus field, no damage done

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Sep 01, 2013

Elora, ON

Storm chaser captures weak EF0 tornado on camera as it touches down near Elora

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Aug 07, 2013

Orillia, ON

Cone tornado passes north of Orillia, stuns motorists as it crosses Highway 11

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Aug 07, 2013

Carnarvon, ON

Large cone tornado hits Carnarvon, leaves EF1 tree, home and vehicle damage

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Aug 07, 2013

Arthur & Grand Valley, ON

Arthur & Grand Valley escape disaster as powerful tornado narrowly avoids towns

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Aug 07, 2013

Head Lake, ON

EF0 elephant trunk tornado hits Head Lake, leaves stunned cottagers, no damage

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Aug 07, 2013

West Guilford, ON

Tornado cuts through West Guilford area, leaves path of snapped & uprooted trees

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Aug 02, 2013

Magiskan Lake, ON

Cone funnel caught on camera as probable EF0 tornado hits northeast of Cochrane

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Aug 01, 2013

Carleton Place, ON

Witnesses observe morning tornado touching down near Carleton Place, no damage

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Jul 19, 2013

Teviotdale, ON

EF0 tornado passes through Teviodale area, snaps & uproots trees, power lines

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Jul 19, 2013

Achray, ON

Forest decimated as EF1 tornado slices through Achray area of Algonquin Park

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Jul 18, 2013

Massey, ON

Probable EF1 tornado strikes Massey area, causes tree damage & structural damage

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Jul 29, 2013

Ottawa, ON

Cone tornado hits Pine View Golf Course, causes EF0 damage to trees & property

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Jun 28, 2013

Springwater, ON

Witnesses observe probable EF0 tornado touching down outside Barrie, no damage

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Jun 16, 2013

Beaver Lake, ON

Witnesses film EF0 tornado as it hits Beaver Lake area without producing damage

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Jun 01, 2013

Kenilworth, ON

Storm chaser captures photogenic EF0 tornado touch down in field near Kenilworth

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May 29, 2013

Casselman, ON

Tornado stirs debris but causes minor damage as it touches down near Casselman

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May 22, 2013

Mallorytown, ON

Probable nighttime tornado touches down near Mallorytown, picks up & moves truck

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May 21, 2013

Elmvale, ON

Quick-hitting EF0 tornado strikes Elmvale farm, causes minor property damage

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May 21, 2013

Dalston, ON

Large rain-wrapped tornado skirts Dalston, causes minor tree and property damage

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May 21, 2013

Glenarm, ON

EF2 tornado slams Glenarm farms; trees snapped, trailer, barn and home destroyed

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Apr 18, 2013

Shelburne, ON

Shelburne tornado becomes first in Canada rated using Enhanced Fujita Scale: EF1

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The cataloguing of tornadoes in Ontario is a function of Environment Canada. In recent years, with the Tornadoes in Ontario Project, Environment Canada has undertaken the documentation of all known tornado events in the province, past and present. This has been the work of researcher David M. L. Sills, one of Canada’s preeminent severe weather scientists, along with Sarah J. Schriver and Patrick W. S. King. The information above is derived primarily from Environment Canada Special Weather Summaries and from official files and reports that are available in the archives at the Environment Canada Library, Downsview. To fill out the stories of these tornadoes, media accounts have been used to supplement that official data. Tornadoes classified as probable or confirmed are included herein.

Tornadoes in Ontario 2012

In contrast to the year before and the one that would follow, 2012 saw fewer tornadoes than average in Ontario and no particularly stand-out events. The two most notable tornadoes touched down at opposite ends of the season. The first occurred on May 22nd near Orono, to the east of Oshawa. The forecast this day was not calling for storms to be particularly severe and, indeed, the one that produced this twister was not. The Orono event was likely a lake breeze induced landspout rather than a supercellular tornado. However, it was especially photogenic for the province, a towering column of dirt and debris that looked like more like a scene out of South Dakota than out of South Central Ontario. The second interesting event occured on September 8th at Storms Corners in Eastern Ontario, when an F2 damaged farms and destroyed a trailer home.

Sep 22, 2012

Wellington, ON

Lawn furniture scattered & properties damaged as F0 tornado strikes Wellington

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Sep 08, 2012

Storms Corners, ON

F2 tornado hits Storms Corners, barns and outbuildings, house trailer destroyed

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Aug 11, 2012

Midland, ON

Witnesses watch & film weak F0 tornado touching down near Midland, but no damage

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Jul 22, 2012

Embro, ON

F0 tornado spins through Embro area, causes no damage as it churns through field

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Jul 17, 2012

Summerstown, ON

Tornado touches down east of Cornwall near Summerstown, damages trees and crops

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Jul 17, 2012

Athens, ON

F1 tornado damages trees, homes & properties, tosses farm equipment near Athens

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Jun 18, 2012

Bread Lake, ON

F1 tornado slices through Bread Lake area in Northern Ontario, decimates forest

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May 29, 2012

Bourget, ON

F0 tornado strikes Bourget area, downs trees & causes minor damage to homes

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May 22, 2012

Orono, ON

Witnesses film dark & dusty landspout tornado churning through fields near Orono

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The cataloguing of tornadoes in Ontario is a function of Environment Canada. In recent years, with the Tornadoes in Ontario Project, Environment Canada has undertaken the documentation of all known tornado events in the province, past and present. This has been the work of researcher David M. L. Sills, one of Canada’s preeminent severe weather scientists, along with Sarah J. Schriver and Patrick W. S. King. The information above is derived primarily from Environment Canada Special Weather Summaries and from official files and reports that are available in the archives at the Environment Canada Library, Downsview. To fill out the stories of these tornadoes, media accounts have been used to supplement that official data. Tornadoes classified as probable or confirmed are included herein.

Tornadoes in Ontario 2011

A summary of the 2011 tornado season in Ontario simply must focus on the disastrous Goderich tornado. No F3 or greater tornado had touched down in the province since April 20th, 1996, when two of them tore paths from Arthur to Violet Hill, and from Williamsford to Blantyr. Ontario was overdue, and unfortunately, that luck ended on the afternoon of August 21st in Goderich. On a day when severe weather was not even forecast, a truly remarkable storm developed in Michigan, becoming a powerful supercell that crossed Lake Huron on a direct course for Goderich. It came ashore seven minutes after Environment Canada issued a tornado warning for Huron County that included the town. First striking the Sifto Salt Mine on the shoreline, the tornado crippled that facility, killing a sixty-year-old man operating a crane at the site. It then tore directly through the heart of downtown Goderich, a kilometer-and-a-half wide wedge that devastated the town square, flipping cars and reducing historic buildings to rubble. The tornado then passed through residential sections of town causing extensive F2 and occasional F3 damage to homes. The event shocked Ontarians: damage totaled $150 million, thirty-seven people were injured and one was killed. Sadly, the Goderich tornado of 2011 was amongst the worst in the history of the province. In a year that was otherwise average in most ways, the Goderich disaster made it one that will be talked about for generations to come.

Sep 12, 2011

Missanabie, ON

Tornado touches down in the Missanabie area northeast of Wawa, damages forest

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Sep 03, 2011

Grimsby, ON

F0 tornado moves through Grimsby neighbourhood, destroys gazebo & damages trees

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Sep 02, 2011

Murillo, ON

Barn & horse riding facility destroyed as F1 tornado hits Murillo property

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Aug 24, 2011

Neustadt, ON

Minor damage to trees & property as F0 tornado touches down in Neustadt area

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Aug 24, 2011

Nairn, ON

F1 tornado tracks for 10km through Nairn area, snaps trees & destroys farm shed

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Aug 24, 2011

Cambridge To Burlington, ON

F1 tornado tracks 15km from Cambridge to Burlington, damages trees, barns, homes

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Aug 21, 2011

Gananoque, ON

F1 tornado touches down in Gananoque, leaves trail of damaged trees & properties

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Aug 21, 2011

Goderich, ON

F3 Ontario Tornado in Goderich leaves $150M damage, dozens injured, one dead

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Aug 16, 2011

Dryden, ON

Large F1 cone tornado narrowly misses Dryden, decimates forest along 24km path

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Aug 16, 2011

Lac Seul, ON

F1 tornado travels 12km through Lac Seul area, destroys forest in wide swath

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Aug 16, 2011

Wenasaga Lake, ON

Tornado touches down in forest near Wenasaga Lake, 1km swath of damaged trees

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Aug 16, 2011

Gerry Lake, ON

2km swath of damage through forest in Gerry Lake area as F1 tornado touches down

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Aug 08, 2011

Plattsville, ON

Tornado touches down in Plattsville, is witnessed by residents, causes no damage

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Jul 23, 2011

Wyoming & Watford, ON

F2 tornado slices Lambton County, barns destroyed & transmission towers mangled

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Jul 16, 2011

Goose Lake, ON

Weak F0 tornado touches down in the Goose Lake area but does not produce damage

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Jun 23, 2011

Kanata, ON

Local residents capture photos and video as F0 tornado touches down near Kanata

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Apr 27, 2011

Fergus, ON

Weak F0 tornado hits south side of Fergus, damages trees & industrial buildings

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The cataloguing of tornadoes in Ontario is a function of Environment Canada. In recent years, with the Tornadoes in Ontario Project, Environment Canada has undertaken the documentation of all known tornado events in the province, past and present. This has been the work of researcher David M. L. Sills, one of Canada’s preeminent severe weather scientists, along with Sarah J. Schriver and Patrick W. S. King. The information above is derived primarily from Environment Canada Special Weather Summaries and from official files and reports that are available in the archives at the Environment Canada Library, Downsview. To fill out the stories of these tornadoes, media accounts have been used to supplement that official data. Tornadoes classified as probable or confirmed are included herein.

Tornadoes in Ontario 2010

Like the year before and the one that would follow, 2010 was an unusually damaging year for tornadoes in Ontario, thanks to two separate events in June. In the early morning hours of June 5th, four tornadoes tore through Lambton County. Three of them touched down in the Harrow area, the strongest of which was an F2 that destroyed barns and greenhouses, shredded trees and knocked a house off of its foundation. Meanwhile, the most damaging tornado of the June 5th event was an F1 that ripped through the south end of Leamington, causing extensive damage in heavily populated residential areas. The tornadoes of June 5th caused over $100 million in damage. Less than three weeks later, another devastating tornado would touch down in the province, this time in the town of Midland, north of Barrie. The Midland tornado was one of two that day. Rated F2, it destroyed dozens of trailers at Smith’s Camp Trailer Park and several businesses in an industrial section of town. Eight people suffered minor injuries and damage was placed at over $15 million.

Jul 23, 2010

Amherstburg, ON

High-end EF0 tornado touches down, knocks over trees & causes minor roof damage

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Jul 20, 2010

St Joseph Island, ON

Tornado forms on Lake Huron, leaves path of tree damage across St Joseph Island

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Jun 23, 2010

Cayuga, ON

Area residents witness slender F0 tornado touch down, damage trees & toss debris

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Jun 23, 2010

Midland, ON

Tornado leaves path of destruction through Midland; $15M in damage, 15 injuries

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Jun 23, 2010

Washago, ON

Tornado passes from Maple Valley to Washago, farms suffer extensive F1 damage

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Jun 06, 2010

SW Of Harrow, ON

F0 twister strikes SW of Harrow as 3 damaging tornadoes touch down around town

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Jun 06, 2010

S Of Harrow, ON

Second of three tornadoes to touch down around Harrow smashes greenhouses, farms

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Jun 06, 2010

SE Of Harrow, ON

Third tornado near Harrow is the strongest, F2 shreds trees & devastates farms

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Jun 06, 2010

Leamington, ON

$100M in damage as destructive tornado tears through Leamington neighbourhoods

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Jun 05, 2010

Dalkeith To Ste Anne de Prescott, ON

Tornado carves long path between towns, extensive damage to trees, farms, homes

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The cataloguing of tornadoes in Ontario is a function of Environment Canada. In recent years, with the Tornadoes in Ontario Project, Environment Canada has undertaken the documentation of all known tornado events in the province, past and present. This has been the work of researcher David M. L. Sills, one of Canada’s preeminent severe weather scientists, along with Sarah J. Schriver and Patrick W. S. King. The information above is derived primarily from Environment Canada Special Weather Summaries and from official files and reports that are available in the archives at the Environment Canada Library, Downsview. To fill out the stories of these tornadoes, media accounts have been used to supplement that official data. Tornadoes classified as probable or confirmed are included herein.

Tornadoes in Ontario 2009

2008 was another below-average year for tornadoes in Ontario – arguably even less memorable than 2007. Only nine touched down and all were rated either F0 or F1. Of these, two events stand out as notable: the June 22nd Bryanston tornado and the July 27th Coboconk tornado. The tornado near Bryanston was highly visible and photogenic, widely documented in photos and videos. This was also true of the tornado at Coboconk; it was captured on tape by lakeside cottagers and residents of town. This tornado was the strongest of the season, rated as a high-end F1. It passed just to the north of town, touching down on Shadow Lake and then tracking several kilometers to the east. Swaths of trees were leveled, coming down and damaging a number of cottages. Three days later, an F0 tornado touched down near Hickson, the final event of an unremarkable season.

Sep 28, 2009

Orono, ON

Residents take photos of multi-vortex tornado as it snaps trees & destroys barns

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Aug 22, 2009

Markham, ON

Cone tornado touches down, travels 3km through city but with only minor damage

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Aug 20, 2009

Ril Lake, ON

Trees snapped & uprooted, house damaged as F1 tornado touches down at Ril Lake

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Aug 20, 2009

Redstone Lake, ON

Cottages extensively damaged & one person injured as tornado crosses Redstone

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Aug 20, 2009

Haliburton, ON

Tornado devastates Haliburton Forest & Wildlife Reserve, levels swath of forest

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Aug 20, 2009

Orono, ON

Tornado rips through rural properties, snapping trees & tossing farm equipment

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Aug 20, 2009

Rice Lake, ON

Tornado tears 10 km path, causes extensive damage to trees, house, outbuildings

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Aug 20, 2009

Buckshot Lake, ON

Trees snapped & structural damage to cottages as tornado crosses Buckshot Lake

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Aug 20, 2009

Bancroft To Carlow Mayo, ON

Witnesses watch as F1 cone tornado touches down, travels 20km & decimates forest

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Aug 20, 2009

Durham, ON

Destructive F2 tornado tracks from Ayton to Markdale, strikes the town of Durham

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Aug 20, 2009

Blue Mountains, ON

Large, damaging F2 tornado hits resort areas, destroys orchards, homes, challets

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Aug 20, 2009

Arnstein, ON

F1 tornado moves ashore off Seagull Lake, causes path of forest, property damage

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Aug 20, 2009

New Lowell & Edenvale, ON

Cone tornado touches down, tears apart farms on 12.6km long path west of Barrie

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Aug 20, 2009

Newmarket, ON

Large cone tornado hits Royal Riding Academy, rips apart buildings & property

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Aug 20, 2009

Woodbridge, ON

Debris-filled cone tornado slices through Woodbridge, damages hundreds of homes

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Aug 20, 2009

Moonstone, ON

Witnesses watch debris swirl as F0 tornado touches down, damages trees & homes

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Aug 20, 2009

Milton, ON

F1 tornado touches down, snaps trees & causes structural damage to homes, hotel

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Aug 20, 2009

Gravenhurst, ON

Nearly kilometre-wide tornado hits Gravenhurst, causes extensive damage in town

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Aug 20, 2009

Dollars Lake, ON

Tornado causes extensive damage as it touches down, tears path through forest

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Aug 20, 2009

North Bay, ON

Cone tornado develops over Lake Nipissing, is caught on video as it comes ashore

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Aug 20, 2009

Maple, ON

Hundreds of homes damaged & destroyed as second F2 tornado tears through Vaughan

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Jul 26, 2009

Woodstock, ON

Witnesses watch as landspout tornado touches down, swirling tube of dust, debris

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Jul 09, 2009

Wenasaga Lake, ON

Powerful tornado tracks 23km, decimates forest & causes extensive damage to home

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Jul 09, 2009

Lac Seul, ON

Three Killed as violent F2 tornado sweeps away cabins at Fisherman's Cove Resort

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Jul 07, 2009

Estaire, ON

Witnesses snap photos of probable tornado, funnel cloud extending toward ground

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Jul 03, 2009

Verona, ON

F0 tornado hits property near Verona, tosses furniture but causes minimal damage

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Jun 25, 2009

Avon, ON

Narrow but intense F2 tornado tracks 9km, house detroyed but homeowner unharmed

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Jun 25, 2009

Leamington, ON

Witnesses watch as F1 tornado touches down, destroying barn & scattering debris

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Jun 25, 2009

Harrow, ON

Trees snapped & barn blown apart as F1 tornado touches down, ravages area farm

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Jun 25, 2009

Norwich, ON

F0 tornado tracks near Norwich, damages trees on path through rural properties

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Apr 25, 2009

Round Lake Centre, ON

Tornado snaps trees and crumples antenna tower as it touches down at Round Lake

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Apr 25, 2009

Breslau, ON

Farm suffers extensive damage as F1 tornado touches down, strikes near Breslau

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Apr 25, 2009

Guelph, ON

F0 tornado touches down in Guelph, leaves path of downed trees & damaged houses

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Apr 25, 2009

Windsor, ON

F0 tornado hits Hanna St East & Langlois Ave, minor damage to building & homes

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Apr 25, 2009

Ottawa, ON

Tornado tracks through west end, causes high-end F0 damage to trees & buildings

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The cataloguing of tornadoes in Ontario is a function of Environment Canada. In recent years, with the Tornadoes in Ontario Project, Environment Canada has undertaken the documentation of all known tornado events in the province, past and present. This has been the work of researcher David M. L. Sills, one of Canada’s preeminent severe weather scientists, along with Sarah J. Schriver and Patrick W. S. King. The information above is derived primarily from Environment Canada Special Weather Summaries and from official files and reports that are available in the archives at the Environment Canada Library, Downsview. To fill out the stories of these tornadoes, media accounts have been used to supplement that official data. Tornadoes classified as probable or confirmed are included herein.

Tornadoes in Ontario 2008

2008 was another below-average year for tornadoes in Ontario – arguably even less memorable than 2007. Only nine touched down and all were rated either F0 or F1. Of these, two events stand out as notable: the June 22nd Bryanston tornado and the July 27th Coboconk tornado. The tornado near Bryanston was highly visible and photogenic, widely documented in photos and videos. This was also true of the tornado at Coboconk; it was captured on tape by lakeside cottagers and residents of town. This tornado was the strongest of the season, rated as a high-end F1. It passed just to the north of town, touching down on Shadow Lake and then tracking several kilometers to the east. Swaths of trees were leveled, coming down and damaging a number of cottages. Three days later, an F0 tornado touched down near Hickson, the final event of an unremarkable season.

Jul 30, 2008

Hickson, ON

Rope tornado touches down in town, witnesses watch & film as minor damage occurs

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Jul 26, 2008

Coboconk, ON

F1 cone tornado hits north side of village, destroys forest & damages cottages

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Jul 22, 2008

Welland, ON

Cone tornado touches down in Welland, tosses debris but causes no notable damage

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Jul 18, 2008

Madoc, ON

F1 tornado trashes area farm, trees snapped, equipment tossed & barn levelled

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Jun 29, 2008

Belleville, ON

Tornado causes extensive damage at farm as trees, barns & riding arena damaged

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Jun 28, 2008

Bark Lake, ON

Cottagers & campers watch, film as F0 tornado touches down & passes across lake

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Jun 23, 2008

Scarborough, ON

Tornado touches down; witnesses snap photos of funnel cloud, dusty debris swirl

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Jun 22, 2008

Bryanston, ON

Residents take photos & videos as tornado touches down, does damage N of London

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Jun 08, 2008

Clandeboyne, ON

Witnesses snap photos of dusty landspout tornado as it damages shed & trailer

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Jun 08, 2008

Warwick, ON

Witnesses watch tornado pass near Highway 402, through fields & without damage

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Jun 06, 2008

Echo Bay, ON

F0 tornado hits near community, causes minor damage to trees, house, warehouse

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May 26, 2008

Windy Lake, ON

Witnesses photograph as F0 cone tornado touches down on lake, moves onto shore

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May 26, 2008

Reynolds Lake, ON

Residents witness funnel cloud, tree damage reported as F0 tornado touches down

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The cataloguing of tornadoes in Ontario is a function of Environment Canada. In recent years, with the Tornadoes in Ontario Project, Environment Canada has undertaken the documentation of all known tornado events in the province, past and present. This has been the work of researcher David M. L. Sills, one of Canada’s preeminent severe weather scientists, along with Sarah J. Schriver and Patrick W. S. King. The information above is derived primarily from Environment Canada Special Weather Summaries and from official files and reports that are available in the archives at the Environment Canada Library, Downsview. To fill out the stories of these tornadoes, media accounts have been used to supplement that official data. Tornadoes classified as probable or confirmed are included herein.

Tornadoes in Ontario 2007

One of the quietest years for severe weather and tornadoes in Ontario in recent memory, 2007 was notable for how uneventful it was! The lone exception occurred on July 8th, when a supercell thunderstorm developed over Lake Huron, came ashore to the south of Port Elgin, and then tracked for hours to the southeast toward Lake Ontario. The storm produced five tornadoes and hail as large as baseballs. The twisters were filmed by several storm chasers who compared the supercell to those of the American Midwest. This event would be talked about by Southern Ontario storm chasers for years to come. However, other than the exceptional, cyclical, tornado-producing supercell of July the 8th, the season was relatively inactive. The four other tornadoes were also weak, F0’s and F1’s, and were minor events in a slow and sunny storm season.

Sep 11, 2007

Batchawana Bay, ON

Minor damage at Silver Birch Cabins as witnesses photograph tornado touch down

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Jul 08, 2007

Pinkerton, ON

Spotters report large wall cloud, brief tornado touchdown, but no damage done

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Jul 08, 2007

Mildmay, ON

F0 tornado touches down alongside another F1 as three tornadoes hit outside town

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Jul 08, 2007

SE Of Mildmay, ON

This tornado, strongest of three near Mildmay, filmed by spotters damaging farm

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Jul 08, 2007

E Of Mildmay, ON

Third & final twister touches down near Milmay amidst localized tornado outbreak

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Jul 08, 2007

Listowel, ON

Distant tornado reported by CANWARN spotters during July 8 tornado outbreak

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Jun 26, 2007

Marks Lake, ON

Swath of forest destroyed, docks & boats tossed from lake as tornado slices area

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Jun 08, 2007

Hardwood Lake, ON

Long, narrow track of damage through forest as tornado travels 19km through area

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May 15, 2007

Winthrop, ON

Witnesses watch as Winthrop tornado hits farms, damaging trees, barns & silos

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May 15, 2007

Kuhryville, ON

Barns damaged & destroyed, trees snapped & debris carried as tornado hits farms

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The cataloguing of tornadoes in Ontario is a function of Environment Canada. In recent years, with the Tornadoes in Ontario Project, Environment Canada has undertaken the documentation of all known tornado events in the province, past and present. This has been the work of researcher David M. L. Sills, one of Canada’s preeminent severe weather scientists, along with Sarah J. Schriver and Patrick W. S. King. The information above is derived primarily from Environment Canada Special Weather Summaries and from official files and reports that are available in the archives at the Environment Canada Library, Downsview. To fill out the stories of these tornadoes, media accounts have been used to supplement that official data. Tornadoes classified as probable or confirmed are included herein.

Tornadoes in Ontario 2006

Until August 2nd, 2006 was turning out to be an average year for tornadoes in Ontario. The season kicked off when it usually does, in mid-May, with a weak tornado confirmed in the Muskoka region. Throughout June and July, a total of seven weak tornadoes touched down on six occasions, all of which were rated either F0 or F1. Two of these touched down in the Newmarket area on July 17th, during a widespread severe weather event that saw wind damage occur throughout much of the province. Although numerous damage reports from that day initially indicated possible tornadoes, all of the damage other than that in the Newmarket area was confirmed as the result of straightline winds. Weeks later, on August 2nd, another system brought severe weather and damage to much of Eastern Ontario. However, this time tornadoes were responsible for much of the destruction which was also considerably more severe than the July 17th event. During the late afternoon and evening of August 2nd, a cluster of supercell thunderstorms developed over Eastern Ontario. Damage reports flooded in; tracts of forest were flattened, power lines were snapped and homes and cottages were damaged and destroyed. The most severe destruction took place in the town of Combermere where an F2 tornado caused devastating damage at the Opeongo Trail Resort, as well as to homes and cottages in the area. In addition, the town’s Home Hardware had its roof torn off. A second F2 tornado was confirmed to have struck near the town of Bancroft, where a house was destroyed. In the days, weeks and months that followed, Environment Canada confirmed fourteen additional F0 and F1 tornadoes from the August 2nd event. Until it was surpassed just three years later, these sixteen tornadoes made this the largest outbreak in Canadian history.

Sep 06, 2006

E Of Malden Centre, ON

Two tornadoes touch down simultaneously, followed by a thrid, cause minor damage

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Sep 06, 2006

NE Of Malden Centre, ON

Two tornadoes touch down simultaneously, followed by a thrid, cause minor damage

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Sep 06, 2006

NE Of Malden Centre, ON

Following simultaneous F0 tornadoes, third touches down at Malden Centre

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Aug 02, 2006

Jackson's Cove, ON

Tornado hits near Jackson's Cove, kicks off largest outbreak in Ontario history

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Aug 02, 2006

West Guilford, ON

Damaging tornado touches down, cuts long swath through forest, houses, cottages

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Aug 02, 2006

Uffington, ON

Witnesses watch F0 tornado touch down & debris swirl, hundreds of trees damaged

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Aug 02, 2006

Marsden Lake, ON

Swath cut through forest with extensive tree damage as F1 tornado touches down

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Aug 02, 2006

Myers Cave, ON

Residents photograph as tornado touches down, hits trees, boathouses & cottages

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Aug 02, 2006

Kirk Cove, ON

Tornado touches down on south side of Big Gull Lake, damages trees at Kirk Cove

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Aug 02, 2006

Drag Lake, ON

F1 touches down, tracks for 11km near Drag Lake, damages trees, houses, vehicles

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Aug 02, 2006

Head Lake, ON

Tornado strikes, damages cottage properties as trees snapped & furniture tossed

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Aug 02, 2006

Minden Hills, ON

F1 tornado tracks through area, extensive damage to trees, houses & cottages

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Aug 02, 2006

Big Mink Lake, ON

F1 tornado slices through 1.5km, forest completely levelled at Big Mink Lake

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Aug 02, 2006

Anstruther Lake, ON

Low-end F1 tornado cuts through forest, trees snapped & uprooted along 1km path

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Aug 02, 2006

Catchacoma, ON

F0 tornado strikes, snapping trees, damaging cottages & blowing apart gazebo

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Aug 02, 2006

Village Of Combermere, ON

Tornado ravages Opeongo Trail Resort, extensive F2 damage through Combermere

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Aug 02, 2006

Clayton, ON

F0 tornado touches down near community, leaves 1km path of damage through forest

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Aug 02, 2006

Bancroft, ON

Farms & houses extensively damaged, one destroyed, as F2 tornado slices through

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Aug 02, 2006

Ferguson Corners, ON

Houses & grocery store damaged by falling trees as F1 tornado strikes community

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Aug 02, 2006

Morriston, ON

CANWARN spotters snap pics of rain-wrapped tornado touching down, but no damage

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Jul 29, 2006

Alderville, ON

Witnesses watch funnel cloud 'rising & falling' as F0 tornado touches down

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Jul 17, 2006

Newmarket, ON

F0 tornado strikes Stonehaven Avenue, causes minor damage to trees & properties

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Jul 17, 2006

Cedar Valley, ON

F1 tornado tracks from Cedar Valley to Vivian, trees snapped & factory damaged

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Jul 10, 2006

Owen Sound, ON

Pilot spots tornado touching down near regional airport, no damage is reported

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Jul 10, 2006

Round Lake Centre, ON

Decimation of forest northeast of Barry's Bay as F1 tornado touches down

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Jul 04, 2006

Osceola, ON

Damaging F2 tornado strikes farms, travels through Eastern Ontario into Quebec

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Jun 21, 2006

Kakabeka Falls, ON

Short-lived F1 tornado causes extreme damage in forest west of Thunder Bay

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Jun 19, 2006

Wartburg, ON

Damage to buildings, property at Wartburg farm as F1 tornado touches down

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Jun 18, 2006

Duntroon, ON

Tornado hits; debris carried, scattered, left piercing ground & hanging in trees

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Jun 16, 2006

Greening Bay, ON

Tornado comes ashore off Lake Nippissing, damages trees, cottages & properties

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May 16, 2006

Bracebridge, ON

Witness photograph large cone tornado near Bracebridge, no damage is done

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The cataloguing of tornadoes in Ontario is a function of Environment Canada. In recent years, with the Tornadoes in Ontario Project, Environment Canada has undertaken the documentation of all known tornado events in the province, past and present. This has been the work of researcher David M. L. Sills, one of Canada’s preeminent severe weather scientists, along with Sarah J. Schriver and Patrick W. S. King. The information above is derived primarily from Environment Canada Special Weather Summaries and from official files and reports that are available in the archives at the Environment Canada Library, Downsview. To fill out the stories of these tornadoes, media accounts have been used to supplement that official data. Tornadoes classified as probable or confirmed are included herein.

Tornadoes in Ontario 2005

The first few months of the 2005 tornado season in Ontario were on the quiet side of average. The first tornado of the season touched down near Rodney on May 13th and was rated F0. Weak tornadoes – rated at F0s or F1 – then touched down on several days during the first half of June, but no tornadoes were confirmed in the month of July. It wasn’t until August that activity picked up again with a few weak tornadoes confirmed early in the month. However, it was on the 19th when Ontario experienced it’s most significant tornado event in years. On that day, two supercell thunderstorms initiated near the shores of Lake Huron and tracked all the way to the Greater Toronto Area and out over Lake Ontario. The storms produced three tornadoes, including an F2 that travelled from north of Milverton to the east of Conestoga Lake, downing trees and destroying barns and cottages; the third was an F2 that knocked down tracts of forest, destroyed barns and outbuildings, and severely damaged a number of rural houses along its path. One more F1 tornado touched down in late September near Feversham and then, on November 9th when this damaging tornado season was seemingly over, a high-end F1 tornado tore through populated areas of Hamilton. The highly unusual late-season twister caused damage to dozens of houses, some severely, and tore portions of the roof off of Lawfield Elementary School, causing minor injuries to a few of the students inside.

Nov 09, 2005

Hamilton & Stoney Creek, ON

Tornado rips Hamilton; Lawfield Elementary School, houses damaged beyond repair

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Sep 25, 2005

Feversham, ON

Tornado strikes farm, debris from destroyed barns and sheds blown 100s of metres

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Aug 19, 2005

Milverton To Conestoga Lake, ON

Damage & destruction as powerful F2 tornado destroys houses, barns & cottages

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Aug 19, 2005

Salem To Fergus To Belwood Lake, ON

Disaster narrowly avoided as tornado skirts Fergus, destroys farms outside town

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Aug 19, 2005

South Easthope, ON

Tornado described as 'tapered column' leaves 10km damage path through area farms

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Aug 10, 2005

Saintfield, ON

Tornado moves through countryside near Saintfield, causes minor property damage

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Jul 17, 2005

Karl Lake, ON

Complete destruction of forest as F1 tornado carves swath through Karl Lake area

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Jun 14, 2005

Hanover, ON

Tornado near Hanover snaps trees & destroys barn, hits & moves police cruiser

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Jun 14, 2005

Orrville, ON

Witnesses observe funnel as brief, small tornado snaps trees & crushes camper

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Jun 13, 2005

Oustic, ON

Witnesses watch as funnel cloud touches down, tosses sheds & debris at Oustic

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Jun 05, 2005

Maidstone, ON

Witnesses observe tornado, 'swirling cloud of vapour and debris', near Maidstone

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May 13, 2005

Rodney, ON

Witnesses observe swirling tube as anticyclonic tornado touches down near Rodney

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The cataloguing of tornadoes in Ontario is a function of Environment Canada. In recent years, with the Tornadoes in Ontario Project, Environment Canada has undertaken the documentation of all known tornado events in the province, past and present. This has been the work of researcher David M. L. Sills, one of Canada’s preeminent severe weather scientists, along with Sarah J. Schriver and Patrick W. S. King. The information above is derived primarily from Environment Canada Special Weather Summaries and from official files and reports that are available in the archives at the Environment Canada Library, Downsview. To fill out the stories of these tornadoes, media accounts have been used to supplement that official data. Tornadoes classified as probable or confirmed are included herein.

Tornadoes in Ontario 2004

2004 was a memorable year for tornadoes in Ontario and ushered in an active and damaging period over the next ten years. The outbreak of four tornadoes that occurred early in the season, on May 22nd, caused the most extensive damage the province had seen in years – though it would pale in comparison to several destructive years that would follow. The tornado at Mitchell ripped through the town causing considerable damage, while the one that struck Gads Hill only damaged one farm, but did so severely. That tornado tore the roof and some second storey walls off of a century-old Victorian house, swept away a drive shed and barn, and uprooted, snapped and debarked every tree on the property. Rated a high-end F2, this was the strongest twister in Ontario since the two F3 tornadoes that hit the Arthur and Williamsford areas on April 20th, 1996. This tornado is often incorrectly noted in media reports and other lists as being rated F3.