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Drefal, ON

Alerts in Effect

Severe Thunderstorm Watch

Issued at 14:37 Thursday 20 July 2017

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

There is potential for severe thunderstorms to develop this afternoon into early this evening.


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.

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.

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