National Weather Service United States Department of Commerce

Tracking Late Season Winter Storms; Unusual Early-Season Heat Wave in the Southwest

Heavy snow and high winds continue in the Great Lakes and Northeast. A moderate atmospheric river will continue to bring heavy precipitation to the Pacific Northwest and northern Rockies. A major winter storm will develop across the northern High Plains tonight into Saturday and rapidly strengthen as it moves into the Great Lakes on Sunday. Above-average temperatures expected in the Southwest. Read More >

Event Summary

A strong line of thunderstorms that developed over North Dakota and southern Manitoba during the evening hours of Wednesday, July 20th, reached western Upper Michigan during the early morning hours of Thursday, July 21st. The line continued eastward through the morning, clearing eastern Upper Michigan by early afternoon. Very strong winds accompanied the line of storms across the northwest half of Upper Michigan. Several pockets of extensive wind damage were observed across Ontonagon and Houghton counties, with sporadic damage elsewhere along the line. This includes estimated winds of up to 90mph at the Emily Lake Campground south of Twin Lakes in Houghton County based off an NWS storm survey.

 

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