Rain, thunderstorm threat creeps up in parts of Ontario and Quebec
Get ready for a soggy Tuesday across Ontario and Quebec as a slow-moving cold front brings widespread showers, gusty winds, and the potential for thunderstorms.
A slow-moving cold front is preparing for a wet stretch across southern Ontario and Quebec, with heavy rain, a few thunderstorms and breezy conditions through midweek.
After a possible stormy Monday night in parts of southwestern Ontario, the risk of thunderstorms will continue on Tuesday with the cold front continuing to slice through Ontario and Quebec.
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Tuesday would see more rain and storms fire up
The system will fully ramp up on Tuesday as the cold front moves through. Showers will become more widespread and consistent, with moderate rain developing in the Greater Toronto Area (GTA), eastern Ontario and southern Quebec throughout the afternoon and evening.
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Warm, unstable air ahead of the front may also produce a few stronger thunderstorms, especially in Quebec's Eastern Townships. Heavy downpours, small hail and strong winds are all possible in these areas.
Elsewhere, including the GTA, Niagara and parts of eastern Ontario, there is a slight chance of embedded thunderstorms, but for the most part, it will be a steady downpour. As the front moves east, winds will continue to gust.
More rain and cooler temperatures this week
This system will not rush to leave.
A blocking high over Atlantic Canada will slow the front's progress and allow more moisture to enter the system. This means more rain in southern Quebec on Wednesday, adding to the already wet conditions.
Rainfall totals in southern Quebec could reach 50 to 60 mm by the end of the season.
Behind the front, cooler, below-seasonal air will settle in, signalling a significant departure from the early-week warmth.
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