Monday Severe Storm Risk with Possible Rotation Due to High Instability

Forecast Centre The Weather Network Stay weather aware again on Monday as a risk for thunderstorms builds across both Ontario and Quebec

Warm, muggy air will linger over portions of Ontario and Quebec to start the workweek, providing the instability needed to fuel a renewed round of thunderstorms for our Monday.

Some of Monday’s storms could turn severe—and portions of Quebec could see the risk for a tornado or two.

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Flooding risk through the overnight hours Active weather that arrived on Sunday will continue into the overnight hours. Widespread rain and embedded thunderstorms will persist Sunday night into early Monday for parts of cottage country east of Georgian Bay, as well as into southwestern Quebec.

Some areas could see more than 70 mm of rain through Monday as precipitation lingers along this slow-moving boundary. Localized flooding is likely during this rainfall event.

Additionally, the risk for non-severe storms will build across the Greater Toronto Area through the pre-dawn hours Monday as the boundary sinks southward.

Severe storm threat rebuilds on Monday An approaching cold front will send temperatures and humidity falling to more comfortable levels. But heat and humidity ahead of that front will provide energy for thunderstorms to develop—some of which could turn severe.

According to the source: The Weather Network.