UPPER MIDWEST AND GREAT LAKES — Meteorologists are expressing high confidence in multiple rounds of severe weather across the Upper Midwest and Great Lakes region beginning this weekend and continuing into early next week. The most likely scenario involves clusters and complexes of thunderstorms forming along a near-stationary warm front, with widespread damaging wind gusts expected to be the primary threat.
Broad Risk Zone Stretches From Minnesota to Michigan
The outlined threat area covers a massive swath of the Upper Midwest, stretching from Duluth and St. Cloud through Minneapolis, St. Paul, and Rochester in Minnesota. The zone continues east across Eau Claire, Madison, and Milwaukee in Wisconsin before extending into Michigan, covering Grand Rapids and Lansing near Lake Michigan.
Farther south, the risk area dips into Iowa, including Des Moines, Cedar Rapids, and Waterloo, before wrapping into northern Illinois near Rockford, Chicago, and Aurora, and reaching South Bend and Fort Wayne in Indiana.
Near-Stationary Boundary Expected to Fuel Repeated Rounds
Forecasters say the setup hinges on a boundary, most likely a warm front, becoming nearly stationary across the region. This kind of setup often allows storm complexes to repeatedly track over the same areas, raising the potential for cumulative wind damage rather than a single, brief event.
While confidence in the overall pattern is high, meteorologists caution that specific details on timing and the exact axis of the heaviest storms will become clearer as the weekend approaches.
Damaging Wind Gusts Identified as Main Hazard
Unlike a classic severe weather setup dominated by tornadoes or large hail, this event is expected to be driven primarily by widespread damaging wind gusts associated with organized thunderstorm clusters. Residents throughout the outlined zone should prepare for the potential of tree damage and power outages as the multi-day threat unfolds.
Multiple Rounds Possible Through Early Next Week
Rather than a single storm event, forecasters are highlighting the potential for several separate rounds of severe weather beginning Friday and continuing into next Tuesday. Communities across the region are encouraged to monitor forecasts closely as confidence in specific timing increases through the week. Stay with NapervilleLocal.com for the latest weather updates and local forecast coverage.…