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Rare Violent Tornadoes Possible in Quebec
14 Jul
Summary
- Forecasters warn of rare, violent tornadoes along Canada-US border.
- Quebec and Maine face highest risk from powerful supercell thunderstorms.
- Wildfire smoke acts as a wild card, potentially dampening storm intensity.

Severe weather alerts were issued on Tuesday, forecasting strong storms with the potential for damaging winds, large hail, and tornadoes along the Canada-US border. Experts warned of an "extreme storm environment" and the possibility of tornadoes not witnessed in Quebec for decades. The primary threat is concentrated from southeastern Quebec into central Maine, with densely populated urban centers like Montreal and Quebec City in the watch area.
While the United States typically sees the most tornadoes, Canada ranks second globally. However, violent tornadoes are rare in this specific border region, with Vermont averaging less than one and Maine about two annually. July is the typical season for such storms.
The severe weather is driven by a large heat dome over the US, creating atmospheric lift. Meteorologists are monitoring wildfire smoke plumes from Canada, which could act as a "wild card" by either stabilizing the atmosphere and weakening storms or, if thinning, allowing them to form.
Forecasters expressed concern that many do not realize Quebec's potential for tornadoes, emphasizing the unprecedented nature of the current threat. The hope is that the wildfire smoke might mitigate the most destructive aspects of the forecasted storms.