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Heat Builds in the West; Severe Thunderstorms and Heavy Rain in the Upper Midwest and Mid-Mississippi Valley; Extremely Critical Fire Weather in the Northwest on Saturday

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms and heavy rainfall are expected over parts of the Upper Midwest to mid-Mississippi Valley today. Critical to extremely critical fire weather conditions from the Northwest and the northern Great Basin on Saturday and Sunday. Read More >

Overview

A line of severe thunderstorms moved through Western Lower Michigan during the early morning hours of June 25, 2024. Extensive wind damage occurred along the Lake Michigan lakeshore, starting near Pentwater and Silver Lake in Oceana County, and spreading south-southeast through Muskegon County, where Whitehall and Muskegon were particularly hard-hit by winds measured between 60 and 70 mph, estimated in some spots to be over 80 mph. Some hail ranging from dime to quarter size was reported as well, but the main impacts came from wind damage to trees and powerlines that then resulted in power outages affecting many thousands.

After storms passed, winds remained strong and erratic in direction thanks to a "wake low" phenomenon that occurred behind (or in the wake of) the exiting storms. Large and rapid pressure changes associated with the wake low produced fluctuations in the height of water levels along the southeastern and southern Lake Michigan shoreline.

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