A severe thunderstorm watch is in effect Tuesday (Sept. 7) for parts of Durham and York regions, as well as Simcoe County.

According to the post from Environment Canada, some of these thunderstorms will be capable of producing wind gusts up to 100 km/h, large hail up to two centimetres in diameter and heavy rainfall.

“Large hail can damage property and cause injury. Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Heavy downpours can cause flash floods and water pooling on roads. Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors,” the watch reads.

“Severe thunderstorm watches are issued when atmospheric conditions are favourable for the development of thunderstorms that could produce one or more of the following: large hail, damaging winds, torrential rainfall.”