National Weather Service United States Department of Commerce


Scattered showers and thunderstorms developed across eastern Iowa, northwest Illinois, and northeast Missouri during the afternoon and evening of Monday, September 3, as an upper level disturbance tracked across the region. One thunderstorm intensified into a supercell, and produced a few tornados as it tracked across Benton and Linn counties during the late afternoon and early evening.  Another storm produced a tornado on the west northwest side of Cedar Rapids shortly after 9 PM CDT. 

Additional Event Summaries:

WPC Surface Fronts/Pressure Loop
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