The thunderstorm forecast is issued daily from April 1 to September 30.

Thunderstorm Forecast for Saturday, September 19, 2020:

Canada:  Non-severe thunderstorms are forecasted for multiple areas in British Columbia, Alberta, and Saskatchewan, and Mantioba on Saturday. Small hail measuring <2 cm, wind gusts up to 90 km/h, and isolated flooding may occur with these storms.

United States of America: Non-severe thunderstorms are expected in multiple areas of the U.S. on Saturday. Small hail, wind gusts up to 60 mph, and isolated flooding may occur with these storms. 

To learn more about the terms used in the thunderstorm outlook, visit our glossary. 


Get Inside

Move to a sturdy building or car. Remember when thunder roars go indoors! Get out of the weather.

When Outside

Do Not take shelter under isolated trees. Get out of boats and away from water. 


Unplug appliances. Avoid using the telephone or any electrical appliances. Do not take a bath or shower.

Don't Forget

Lightning can strike any location more than once. In fact, given enough time, it is actually inevitable.


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