The focus for severe storms will shift eastward into the Ohio Valley on Wednesday, bringing the threat for damaging winds, hail and heavy rainfall.
The thunderstorms will be fueled by warm and humid air that will be in place across the Ohio and Tennessee valleys. With a warm, southerly flow out ahead of a cold front, temperatures will surge into the 80s by the afternoon.
Areas from Detroit, Mich., Cleveland and Cincinnati, Ohio, to Nashville, Tenn., should be ready for strong-to-severe thunderstorms during the afternoon and evening hours on Wednesday.
With urban flooding, torrential downpours and strong winds, it will be a difficult evening commute in some areas.
This slow-moving cold front is part of the same system that brought the devastating tornadoes to Oklahoma on Monday. A couple of the strongest storms could produce a tornado on Wednesday, especially in the Ohio Valley in areas closer to a potent low pressure system moving across Lower Michigan. However, widespread tornadoes are not expected.
The main concerns with these thunderstorms will be damaging straight-line wind gusts, hail and drenching downpours. Frequent lightning will also accompany many of the storms.
At the same time, thunderstorms will also develop along a slow-moving warm front across upstate New York. As was the case on Tuesday, some of these storms will contain hail and strong winds.
The front will continue to slide eastward on Thursday, shifting the threat for severe weather into the Interstate 95 corridor from New York City down to Washington, D.C.
In the wake of the front, much cooler air will move into the Great Lakes and Northeast for the Memorial Day weekend.