National Weather Service United States Department of Commerce

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Overview

Several clusters of strong to severe thunderstorms impacted parts of the area on Thursday, August 4th.  During the afternoon and into the early evening, severe storms produced wind gusts up to 70 mph and torrential rains.  Most of the wind damage was across west central Wisconsin and northeast Iowa. 1-2" per hour rainfall rates were common with the storms, resulting in urban flooding.

loop of radar reflectivity
Radar loop from around 10 a.m. to 8 p.m., with warnings overlaid in yellow.
nws logo Media use of NWS Web News Stories is encouraged!
Please acknowledge the NWS as the source of any news information accessed from this site.
nws logo