F0 tornado strikes Stonehaven Avenue, causes minor damage to trees & properties
Embedded in a line of severe thunderstorms that caused wind damage across Southern and Central Ontario, this was the first of a pair tornadoes that struck the Newmarket area at 10:15 pm. It travelled along Stonehaven Avenue for half a kilometre and had a width of 30 metres. Play sets were knocked over, fences thrown for hundreds of metres and power poles blown down. Minor damage was done to a garage and several houses had windows broken and shingles torn off, one of which was found impaled in a wooden doorframe.
This was one of two tornadoes that struck the Newmarket area in Southern Ontario on July 17. The other was an F1 that passed from Cedar Valley to Vivian.