Thursday's storms threaten heavy downpours and large hail in Ontario, Quebec
Severe weather shifts into eastern Ontario and southern Quebec, with heightened instability Thursday. Stay alert to heavy downpours, strong winds and large hail
The severe weather risk returns Thursday for eastern Ontario and southern Quebec after a stormy Wednesday in southern Ontario, which included a tornado-warned cell and 50+ mm of rain for some.
Thursday brings a threat of widespread, scattered storms, with heavy downpours, 2-4 cm hail, and strong winds as the main hazards.
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The Greater Toronto Area (GTA) won’t be in the clear, either, as there could be storms popping up there, too, but they should remain below severe warning criteria.
You'll want to stay updated on the weather alerts in your area as conditions can change quickly when severe weather hits.
Thursday: Storm threat shifts east with risk for heavy downpours, large hail, and strong winds
A shift in storm activity is expected to bring unsettled weather to eastern Ontario and much of the St. Lawrence region, including Montreal and Quebec City, on Thursday.
Significant instability in the St. Lawrence Valley and abundant moisture spreading into the Laurentians may lead to localized flooding. Thunderstorm activity could produce 30-50+ mm of rainfall.
Later in the afternoon, widespread scattered storms are expected, with increased potential for heavy downpours, hail up to 2+ cm, and strong winds. There is uncertainty surrounding the severity of storms developing in the Ottawa area.
The GTA may experience isolated storms in the late afternoon and early evening. These storms may emerge as the Lake Ontario breeze interacts with the Niagara Escarpment and Oak Ridges Moraine. A similar risk exists inland from Lake Erie. If storms form in these areas, heavy rain will likely be the primary concern.
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Residents in affected regions should stay updated on evolving conditions and prepare for potential weather impacts.
Be sure to check back for the latest weather details across Ontario and Quebec.