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Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday

A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >

Overview

Widespread thunderstorms developed south of a line from Fairfield Iowa to Sterling Rock Falls Friday afternoon and evening.  These storms moved eastward across the area throughout the evening and overnight hours.  These storms produced heavy rainfall, flashing flooding, and hail up to the size of golf balls.

Rain reports south of this line ranged from 1 to 6 inches, with the heaviest rains falling in from Clark County northeastward into Hancock Counties and from Henry County Illinois eastward into Bureau and Putnam Counties.

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WPC Surface Fronts / Pressure 1 pm 9/27
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