Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Heat Building in the Western U.S.

A cold front pressing east across the central U.S. will be the focus for areas of strong to severe thunderstorms and excessive rainfall through this weekend. Strong to severe thunderstorms my bring damaging winds, hail, and a few tornadoes while excessive rainfall may lead to areas of flooding. Heat will build across the western U.S. with heat-related watches, warnings, and advisories issued. Read More >

Heavy rain led to flash flooding and river flooding in and close to Delaware County, IA, starting late afternoon on Sunday, October 7th. Portions of Delaware County saw rainfall amounts as high as 5 to 6 inches over a 6-hour period. These rainfall amounts translate to the 1% annual chance rainfall event for a 6-hour duration. This means that there is a 1% chance of this amount of rainfall occurring in any given year.

Flooding affected many locations in and close to Delaware County, including the City of Manchester. There were reports of street and basement flooding. Flood waters washed out bridges and roads in Delaware County.

Below are the radar-estimated rainfall amounts for this event through 4 am Monday, October 8th.

NOAA/NWS Quad Cities, IA/IL, Doppler radar estimated rainfall through 4 am CDT, Monday, October 8th.

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Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Heat Building in the Western U.S.

Flash Flooding in Delaware County, Iowa - October 7, 2007