National Weather Service United States Department of Commerce

BLIZZARD CONDITIONS Tonight Into Monday Morning

Blizzard conditions will develop across much of the area tonight, especially in rural wind-prone areas. This new snow will be lighter and fluffier, making it much more susceptible to blowing around in the strong winds. TRAVEL STRONGLY DISCOURAGED tonight! The Monday morning commute will be impacted. Sporadic power outages will be possible. Read More >

Overview

Rounds of thunderstorms with heavy rain tracked over the same areas repeatedly during the evening of Tuesday, August 23rd through the early morning of Wednesday, August 24th.  Rainfall accumulated between 5 to 8" across extreme northeast Iowa into southwest Wisconsin.

This led to widespread flooding and rapidly rising rivers.  One elderly man was killed in rural Chickasaw Co., IA when his car was swept away by flood waters during the early morning hours (4:40 a.m.).  There were numerous road closures, water rescues, and homes inundated by flood waters.

Rivers impacted included the Cedar, Upper Iowa, and Turkey in northeast Iowa.  In southwest Wisconsin, the Kickapoo River had some flooding.

Record river crests from this event included:

  • Turkey River @Spillville - crest of 20.25'
  • Turkey River @Eldorado - crest of 21.92'
  • Upper Iowa @Dorchester - crest of 24.27'
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Radar loop from approx. 10 pm Aug.23rd to 4 am Aug.24th
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