Another day, another Illinois tornado. That's just how this spring has gone in the Midwest. A low pressure system brought numerous severe storms to the Midwest on Wednesday, including large hail and flooding in Wisconsin, with strong winds, a tornado, and flooding in Illinois.

Forecast

The low pressure system that spawned Wednesday's storms is now moving east through the Great Lakes and will track through New England to end the week, bringing severe weather chances to the Northeast on Thursday and Friday (below). This is primarily for the threat of damaging winds but an isolated tornado or two will be possible (top of page).

The area between the warm front and cold front on the SE side of the low will (known as the warm sector) will play host to lines of thunderstorms developing in the afternoons. With spin added from the low pressure itself, a few storms could rotate enough to produce a tornado or two. Storms will push farther south and east on Friday, with a few strong storms possible in New England, and farther south along the cold front in the Ohio Valley.

As a trailing low moves in on Saturday, a few more severe storms will be possible as the low tracks into the Southeast.

Heavy rainfall will accompany strong storms, leading to isolated flood potential. The higher chance for flooding will stick to areas along and west of the Appalachians, through the Ohio River and up to I-70.

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