Alert archive / Illinois / River Flood Warnings in 2026

River Flood Warning 29, NWS Quad Cities, IA

April 20, 2026Hancock County, McDonough County, Illinois

NWS Quad Cities, IA issued this river flood warning at Apr 20, 2026, 1:05 PM CDT for Hancock County, McDonough County, Illinois. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Apr 20, 2026, 1:05 PM CDT (18:05 UTC)
Expired
Apr 20, 2026, 8:26 PM CDT
In force
7 hr
Issued by
NWS Quad Cities, IA
Area
Storm-based polygon
Flood severity
Minor

Counties Hancock County, IL, McDonough County, IL

The radar

The Quad Cities radar (KDVN), 134 km from the middle of the area, began a volume at 18:09 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The river

Written for the forecast point La Moine River at Colmar (CLMI2). The gauge peaked at 20.34 ft at Apr 20, 2026, 7:00 AM CDT.

actionminormoderate152004/2004/2104/22
Action stage
19 ft
Minor stage
20 ft
Moderate stage
22 ft
Major stage
24 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05584500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

Nearby

River Flood Warnings in Illinois, 2026Every river flood warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.