Severe · Flash Flood WarningActive alert

Flash Flood Warning issued September 20 at 5:45AM CDT until September 20

Affecting Delaware, IA; Dubuque, IA; Jackson, IA; Jones, IA; Jo Daviess, IL

In effect until: Sep 20, 2026, 4:15 PM

Delaware, IA; Dubuque, IA; Jackson, IA; Jones, IA; Jo Daviess, IL

Likely impact across 5 counties in IA and IL; effects through 4:15 PM.

Get to higher ground now. Never drive through flooded roads.

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Read the original bulletin (official text)

At 545 AM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 1 and 2.5 inches of rain have
fallen. Additional rainfall amounts of 0.5 to 1 inch are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar indicated.

IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.

Some locations that will experience flash flooding include...
Dubuque, Asbury, Dyersville, Monticello, Bellevue, Cascade,
Epworth, East Dubuque, Farley, Peosta, Earlville, Hopkinton, New
Vienna, Colesburg, Worthington, Holy Cross, La Motte, Luxemburg and
Rickardsville.

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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™

Flash Flood Warning issued September 20 at 5:45AM CDT until September 20

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