The severe thunderstorm watch was in effect for about 2 hours
Environment Canada has ended a severe thunderstorm watch for southern Ontario.
Earlier Thursday, the weather agency said conditions were favourable for the development of dangerous storms capable of producing damaging wind gusts, large hail and heavy rain this evening, according to an alert that went out at 7:06 p.m.
Affected areas included the City of Toronto, Peel, Halton, York and Durham regions, Hamilton, Peterborough, Barrie and Muskoka, among others.
Environment Canada had also issued thunderstorm warnings for some areas, including Newmarket, Georgina, and the northern York Region, Caledon, Innisfil, New Tecumseth, Orangeville, and northern and southern Dufferin County, which have now ended.
High winds and hail have hit areas north of the GTA.
The OPP say a tractor trailer was blown over on the northbound 400 near Canal Road. They are also responding to reports of downed trees and hydro wires across southern Ontario.
The hashtag #ONStorm was being used on Twitter to share photos and videos of the storm.
After the first heat wave of 2017 gripped southern Ontario over the past two days, this evening’s thunderstorms are expected to bring in a cold front with them.