Science Behind the Weather: What is a derecho?
Alerts in Effect
Severe Thunderstorm WatchIssued at 15:44 Tuesday 11 August 2020
Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts, large hail and heavy rain.
These storms will persist into 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. Intense lightning is likely with any thunderstorm that develops.
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 ABstorm@canada.ca or tweet reports using #ABStorm.