Northern Ontario: Thunderstorm Outlook for Monday, September 20, 2021

Forecast Discussion

Heavy rainfall will continue to affect Northwestern Ontario throughout the day on Monday. This area of rainfall will also have some embedded thunderstorm activity which should mainly remain non-severe with strong wind gusts and heavy rainfall as the main threats. The thunderstorm activity will slowly track to the east during the day and could also bring some thunderstorms to parts of Northeastern Ontario overnight into Tuesday - more details on this soon.