The risk of severe weather is likely to rebound over parts of the Midwest and Appalachians before the week ends.
"Very spotty severe weather can occur from part of the Lower Peninsula of Michigan to western and central Kentucky on Wednesday," AccuWeather Senior Meteorologist Kristina Pydynowski said.
"Storms have the potential to be severe on a more regional basis from portions of Ohio to Virginia and eastern Tennessee on Thursday," she said.
Many of the storms on Wednesday will be typical of June with drenching downpours, brief gusty winds and a few lighting strikes.
However, a small number of the storms have the potential to bring hail, damaging wind gusts and urban flooding from the Chicago area, eastward to Detroit, southward to Cincinnati and Louisville, Kentucky, on Wednesday afternoon and into Wednesday evening.
Sporadic disruptions to travel are possible, especially where the storms cross main highways, target urban areas and approach major airports.
On Thursday, the storms will have the potential to pack more of a punch and cover more territory.
"A greater number of the storms will pack damaging winds, flooding downpours and hail during Thursday afternoon into Thursday night," Pydynowski said.
Storms will most likely ignite over portions of Ohio, southwestern Pennsylvania eastern Kentucky and northwestern West Virginia by early Thursday afternoon.
During the rest of the afternoon and into the evening on Thursday, the storms will move southeastward into western Maryland, western Virginia and eastern Tennessee.
The storms from later Thursday into Thursday evening can hit a few communities hard with frequent lightning strikes, downed trees and sporadic power outages.
Major cities that could be hit by severe storms on Thursday include Columbus, Ohio; Charleston, West Virginia; Roanoke, Virginia; Knoxville, Tennessee; and Pittsburgh.
The storms could organize into a complex or solid line if ideal conditions develop with prior sunshine, warmth, very moist air and light winds.
Rain and some rumbles of thunder may occur from western New York state to eastern Maryland, northeastern Virginia and Delaware.
Little rain may fall on New York City, while Boston is likely to escape rain entirely through Thursday.
The fast-moving storm will slow down along the mid-Atlantic coast on Friday with showers and thunderstorms. The storm could stall just offshore over the weekend.