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Weather Alerts for: North Bay - Powassan - Mattawa


Severe Thunderstorm Watch in effect for:
  • North Bay - West Nipissing

Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts, large hail and heavy rain. Hazards: Strong winds gusts up to 90 km/h Nickel to toonie size hail Risk of a tornado Timing: This afternoon and early this evening. Discussion: Severe thunderstorms are expected to develop and track through the region today. Strong wind gusts and large hail are the main threats. 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. Remember, severe thunderstorms can produce tornadoes. Water-related activities may be unsafe due to violent and sudden gusts of wind over bodies of water. Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors! Emergency Management Ontario recommends that you take cover immediately if threatening weather approaches. 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:


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