Update: Scattered storms are possible tonight. An isolated strong storm is possible.
Update: It looks like the overall intensity of the storms overnight won't be as strong as originally anticipated. The storms as they move southeast continue to weaken. Scattered storms are possible after midnight, but severe weather is not expected.
Lightning, thunder, and locally heavy rainfall will accompany the storms.
A disturbance aloft is expected to erupt strong to severe storms across central and northern Wisconsin. That area is under an enhanced risk for severe storms capable of damaging winds. This type of setup usually happens later in the summer for us.
Southeastern Wisconsin is under a slight risk for storms. The timing will likely be well after midnight. We are thinking between 2 am and 8 am.
There remains some uncertainty to where the placement of the storms will be. We will continue to watch this evolve. These types of storm systems can produce gusty winds to 70 mph and very heavy rain.