Storms Surge Overnight with Giant Hail, 80 MPH Winds Threat from MN to Upper MI — SevereWX

Storms Surge Overnight with Giant Hail, 80 MPH Winds Threat from MN to Upper MI

A batch of elevated thunderstorms is firing up across northern Minnesota and Wisconsin late this evening, parked along a stalled boundary to the cool side of the action. But forecasters at the Storm Prediction Center see trouble brewing as low-level warm air pushes in, sparking more storm development and potential clustering into the overnight hours.

With most unstable CAPE topping 2000 J/kg and robust wind shear through the atmosphere, these storms pack a punch. Right now, the biggest cells could sling isolated large hail and damaging wind gusts. As coverage thickens—possibly upscale growth into a more organized line or cluster—the severe potential ramps up significantly. SPC's Mesoscale Discussion #1755 flags a 60% chance of a tornado watch if trends support it.

Expect peak hazards including:

• Hail: 1.50-2.50 inches (golf ball to tennis ball size)
• Winds: 65-80 mph gusts, with tornadoes up to 90 mph possible

This setup stretches from northern MN through WI and into western/central Upper Michigan, valid through around 2 AM EDT Monday. While elevated, these storms can still hammer the ground with severe weather, especially if they organize.

Stay prepared: Keep a weather app or NOAA radio handy tonight, secure outdoor items, and have a shelter plan ready for sudden large hail or fierce winds. Check SPC's site for updates as trends evolve.