A multiday severe weather threat kicks off Monday, with parts of the Midwest facing a Level 3 out of 5 risk where tornadoes, large hail, and damaging winds are all possible. The severe storm risk will shift east each day through Wednesday. Latest:
A multiday severe weather event is kicking off the workweek, bringing the threat of strong thunderstorms from the Upper Midwest to the Mid-Atlantic and Northeast.
The storms will shift east each day through Wednesday, bringing the threat of tornadoes, damaging winds and large hail. In addition, heavy rain is likely to cause more flash flooding.
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Multiday severe weather outlook
(FOX Weather)
Monday: Severe storms target Upper Midwest
Severe weather is expected to develop on Monday across the Upper Mississippi Valley and western Great Lakes as a strong system moves southeast out of Canada, bringing a Level 3 out of 5 storm threat.
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Monday severe storm threat
(FOX Weather)
The combination of very strong winds higher in the atmosphere, and warm, moist air near the ground will create a favorable environment for severe thunderstorms.
While a few storms could develop Monday morning from eastern Minnesota into western Wisconsin, the greater concern comes during the afternoon and evening, when a cold front is expected to trigger a more widespread round of storms from northern Iowa into Wisconsin and the Upper Peninsula of Michigan, the FOX Forecast Center said.
Wall cloud captured over Kenosha, Wisconsin, on June 11, 2026.
(Andrew Meier Photography)
The combination of very strong winds higher in the atmosphere, and warm, moist air near the ground will create a favorable environment for severe thunderstorms.
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While a few storms could develop Monday morning from eastern Minnesota into western Wisconsin, the greater concern comes during the afternoon and evening, when a cold front is expected to trigger a more widespread round of storms from northern Iowa into Wisconsin and the Upper Peninsula of Michigan, the FOX Forecast Center said.
Storms are expected to begin as individual supercells capable of producing large hail, damaging winds, and a few tornadoes.
Monday’s potential tornado intensity
(FOX Weather)
According to the FOX Forecast Center, “The greatest tornado threat appears to be from far northeast Iowa into central and northern Wisconsin.”
As the evening progresses, storms are expected to merge into a larger line and race south-east, shifting the threat toward widespread damaging straight-line winds, although large hail will remain possible with the strongest storms as they move across the western Great Lakes Monday night.
The FOX Forecast Center highlights Milwaukee, Green Bay, La Crosse, Marquette, and Des Moines, as key locations to watch.
Damaging winds possible in the Mid-Atlantic
The FOX Forecast Center is also monitoring the Mid-Atlantic for severe storm development on Monday as portions of the region have been issued a Level 2 out of 5 threat, primarily concentrated in North Carolina.
This image shows dark clouds as thunderstorms approached Corolla, North Carolina, on Sunday, June 8, 2025.
(Evan Adams via Storyful / FOX Weather)
Afternoon instability will promote storm development, which could produce damaging winds.
Tuesday: Severe storms target Ohio Valley and Northeast
Tuesday is shaping up to be another active weather day across much of the eastern U.S., with the potential for both severe thunderstorms and flash flooding from the Midwest to the Northeast.
The severe storm threat level has been upgraded to a Level 3 out of 5 for parts of the Ohio Valley, surrounded by a broader Level 2 threat.
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The first round of storms is expected to develop during the afternoon from eastern Virginia into the Mid-Atlantic and southern New England.
Some of these storms could become severe, producing damaging wind gusts and an isolated tornado.
Monday’s potential tornado intensity
(FOX Weather)
Additionally, the same storms will also be capable of producing torrential rain, especially along the I-95 corridor from the Delmarva Peninsula into southern New England.
Repeated downpours could lead to flooding over areas that just had bad flooding over the weekend.
Tuesday precipitation and severe forecast
(FOX Weather)
Farther west, the FOX Forecast Center said the greatest severe weather threat is expected from southern Illinois and Indiana through Ohio, Kentucky, West Virginia, and western Pennsylvania.
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Large hail, damaging wind gusts, and a few tornadoes will all be possible before the threat transitions to mainly damaging winds as storms move east.
Once again, flash flooding will also be a growing concern across the central Appalachians and Blue Ridge Mountains, where repeated heavy rain could quickly lead to problems.
One New Yorker captured video of a Queens street under water after heavy rain lashed New York City on Saturday.
Video Credit: FLORIDAP8TRIOT/X.COM
The FOX Forecast Center highlights Pittsburgh, Cincinnati, Columbus, Louisville and Charleston, West Virginia as the biggest cities to monitor, in addition to anywhere along the I-95 corridor, from NYC southward.
Wednesday: Severe storms shift south into Carolinas
Starting Wednesday, the severe weather threat will begin shifting farther south and east as a cold front moves through the Mid-Atlantic.
While showers and thunderstorms are expected to be ongoing during the morning, how much the atmosphere can recover during the afternoon will determine where the strongest storms develop, the FOX Forecast Center notes.
“Right now, the greatest chance for severe weather appears to be across parts of the southern Mid-Atlantic and the Carolinas,” they said.
With a main risk of damaging winds, a Level 2 out of 5 threat is present.
Flood threat outlook Wednesday through Thursday morning
(FOX Weather)
That said, while the severe weather threat gradually decreases, the flooding threat will continue to increase as the cold front slows down near the Carolinas, tapping into deep tropical moisture, which will lead to repeated rounds of heavy rain.
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Heavy rains fall in Wilmington, NC area on May 19, 2023.
(Brunswick County Sheriff’s Office / FOX Weather)
In fact, by Wednesday, some locations could be dealing with their fourth straight day of heavy rain, making flash flooding more likely as the ground becomes increasingly waterlogged.
The greatest concern extends from around Raleigh east to the Outer Banks and south toward Wilmington.
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By Thursday, the front is expected to drift a little farther south, shifting the heaviest rain closer to the coast.
Stay weather-aware and stick with FOX Weather for the latest updates on these developing storms.
