Severe Thunderstorm Watch for Southern Ontario

Written by Ragini Joshi

Published on : July 19, 2020 12:47

Severe Thunderstorm Watch for Southern Ontario

Active for next 13 hours · Environment Canada

Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts and heavy rain.

Severe thunderstorms are possible today as a cold front approaches from the west.

Hazards: – Wind gusts near 100 km/h. – Risk of tornadoes.

Thunderstorms are possible throughout the afternoon before weakening and moving east of the area this evening.


Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Remember, severe thunderstorms can produce tornadoes.

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.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to or tweet reports using #ONStorm.

For more information:
Recommended actions

Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors!

The Office of the Fire Marshal and Emergency Management recommends that you take cover immediately if threatening weather approaches.