Plenty of heat and humidity combined with an approaching cold front will create a volatile mix Friday afternoon and evening from Detroit to Quebec City, ripe for severe thunderstorms.
While the main story since the beginning of the week has been the oppressive heat, the focus will shift to storms as the weekend approaches. A push of cooler, drier air will begin to work its way southeastward from Canada Thursday.
As this air clashes with the hot and humid conditions across the Great Lakes and St. Lawrence Valley, thunderstorms are poised to erupt Friday afternoon and race eastward into the night.
Severe weather may be ongoing Friday morning across northern Michigan and Wisconsin, but the bulk of the nasty storms should wait until later in the afternoon. Southern Ontario and Quebec should bear the brunt of the violent weather later Friday.
Residents in Toronto, Ottawa, Montreal and Quebec City should keep a watchful eye on the sky for changing weather Friday afternoon.
According to Lead Canadian Meteorologist Brett Anderson, "This is a prime time of year for severe weather in eastern Canada. The storms on Friday have the potential to bring damaging winds, hail and even a few tornadoes."
Torrential downpours will also accompany these storms. This is not good news for locations around Toronto that experienced flooding early last week. Over 7 inches of rain has fallen in Toronto in July, over 200% of the monthly normal!
Damaging storms can also ignite as far south as Chicago and Detroit, although the most widespread severe weather is expected to remain to the north and east.
After blasting through southeastern Canada, the storms should cross into New England Friday evening. Severe weather could impact Buffalo, Rochester and Syracuse, N.Y., in addition to Burlington, Vt.
Saturday will also be an active day for severe weather, but the focus will shift into the I-95 corridor of the Northeast.