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.