Flood Warning Issued for Henry, Rock Island, and Whiteside Counties in Illinois

Source: NOAA · Henry, Rock Island, and Whiteside Counties, Illinois

This alert is no longer in effect.

NOAA issued it on April 16, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).

Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.

The National Weather Service has issued a Flood Warning for Henry, Rock Island, and Whiteside counties in Illinois due to expected moderate flooding on the Rock River starting late tonight.

Read this weather record in 30 seconds

Record type
Flood Warning
Affected area
Henry, Rock Island, and Whiteside Counties, Illinois
Issued
April 16, 2026
Issuing authority
NWS Quad Cities IA IL

Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.

Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Henry, Rock Island, and Whiteside Counties, Illinois.

Alert Details

The Flood Warning has been issued by the National Weather Service (NWS) Quad Cities IA IL. It is effective from 2026-04-17T05:00:00-05:00 CDT until further notice.

Affected Areas

The warning affects Henry, IL; Rock Island, IL; and Whiteside, IL counties. Specifically, it impacts the Rock River near Joslin (affecting Rock Island, Henry, and Whiteside counties), Rock River at Moline (affecting Rock Island and Henry counties), and Rock River at Como (affecting Whiteside County).

What You Should Do

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas.

Expected Conditions

Moderate flooding is forecast. At 9:45 AM CDT Thursday, the river stage was 10.4 feet, expected to rise above the flood stage of 12.0 feet late tonight and crest at 15.5 feet on Monday morning. More rain is forecast Friday night, which may result in a higher crest.

Timeline

The alert is effective from 2026-04-17T05:00:00-05:00 CDT and expires on 2026-04-17T10:45:00-05:00 CDT, but flooding is expected from late tonight until further notice.

Original source: NOAA Official Notice ↗

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Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.

Frequently Asked Questions

Common questions about this NWS weather alert.

What is this NWS weather alert about?
The National Weather Service has issued a Flood Warning for Henry, Rock Island, and Whiteside counties in Illinois due to expected moderate flooding on the Rock River starting late tonight.
Which agency issued this alert?
This alert was issued by NOAA. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "high" severity. Take precautions and monitor for updates.
What area is affected?
This alert affects Henry, Rock Island, and Whiteside Counties, Illinois. Check with NOAA for the most current geographic scope.
Where can I find more Weather Alerts updates?
Browse the full Weather Alerts feed on Areazine at areazine.com/weather/ for the latest updates from NOAA and other agencies.