Lebanon, ON EF2 Tornado of August 2, 2015

Waterloo - Wellington

This tornado caused EF2 damage to rural properties near Lebanon, a small community east of Listowel. It touched down at 8:55 pm and was on the ground for 5 km with a path that was 50m wide. Several grain silos were tilted over and one of them destroyed, the top portion of the structure torn away. A barn also had its roof torn off and, at one property, a sailboat was picked up and deposited in a line of trees. All along the path trees were snapped and uprooted and houses suffered minor damage.

This was one of four tornadoes that touched down on August 2, 2015. The others:

Figure 1. Surface analysis at 03Z on August 3, 2015 showing mean sea-level pressure (MSLP) contours, surface observations, fronts and pressure centres (WPC, 2017)

Figure 1 depicts the surface observations at 11:00 pm EDT, which shows a squall line (line of thunderstorms) moving across southern Ontario and Lake Ontario. This line of storms was responsible for several strong tornadoes across southern Ontario in the late-evening hours of August 2nd.

Figure 2. Doppler radar reflectivity at 10:43 pm EDT (source: https://meteologix.com/ca)

Figure 2 shows the squall line moving across the GTA in southern Ontario.


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 03Z Mon Aug 3 2015. Retrieved from: https://www.wpc.ncep.noaa.gov/archives/web_pages/sfc/sfc_archive.php