National Weather Service United States Department of Commerce

Massive Heat Wave; Severe Storms and Heavy Rain

A massive heat wave is consuming much of the Midwest into the Southern tier of the U.S. with hazy, hot and humid conditions. These dangerous conditions will likely persist through Thursday as widespread excessive heat warnings and heat advisories are in effect. North and east of the heat and area of high pressure, thunderstorms with damaging and severe winds, large hail and heavy rain are likely. Read More >

Overview

A strong fall storm tracked across the central Great Lakes, bringing storm force winds across Lake Superior and high winds across much of northern Upper Michigan. Frequent winds gusts of 50 to 60 mph downed thousands of trees and snapped power lines, leading to widespread power outages and hazardous travel across northern portions of Upper Michigan. Elsewhere across the region, frequent wind gusts of 30 to 40 mph resulted in sporadic power outages. As a result from the strong winds large waves were observed on Lake Superior, with the highest waves along the shoreline from Big Bay down through Grand Marais. At times, wave heights reached 25 to 30 feet.

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1500Z Surface Analysis showing the strong storm system tracking across eastern portions of  Upper Michigan.
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Large waves crashing into the shoreline in Eagle Harbor, Michigan.

Image courtesy of @Isaac_diener

Picture showing the extent of lakeshore flooding near Picnic Rocks in Marquette, Michigan.

Image courtesy of @Nicole_TV6

Picture of the snow that developed behind the exiting system from the NWS Marquette webcam.
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