Heightened flood concerns in southern Ontario from heavy rain, severe storm risk
Prepare for more stormy weather in southern Ontario on Tuesday with additional heavy rain and thunderstorms. Hazards include torrential downpours, strong wind gusts, and even small hail for some areas.
Parts of southern Ontario are in for another active day on Tuesday, with some locations potentially collecting more than 80 mm of rain by the time the stormy weather concludes.
The most serious danger will be if storms frequently pass over the same locations, causing rainfall totals to rapidly rise. Localized flooding, low visibility and dangerous driving conditions are all conceivable.
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Flooding risk elevated with more thunderstorms on Tuesday
The unsettled trend will persist into Tuesday as an upper trough remains over the province, transferring the biggest storm and heavy rain threat to eastern Ontario, including Ottawa and Kingston.
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Persistent storms will risk local amounts of 50-80+mm of rainfall through midweek, although rainfall amounts will be highly variable across the province.
Heavy downpours and localized flooding are the biggest concerns.
Showers begin Tuesday morning, with severe thunderstorm potential increasing through the day with daytime heating.
Severe storms spiral in around the low, impacting Ottawa to Montreal around the commuting hour.
Showers and heavy downpours may continue overnight Tuesday into Wednesday, with lingering showers looking increasingly likely during the latter.
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Stay with The Weather Network for the latest updates for Ontario.