Flash Flood Warning Issued for Western Madison County, IL

Source: NOAA · Western Madison County, Illinois

This alert is no longer in effect.

NOAA issued it on June 28, 2026, 8 weeks 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.

NWS St Louis MO has issued a Flash Flood Warning for Western Madison County in southwestern Illinois until 5:00 PM CDT Monday due to heavy rainfall from thunderstorms.

Read this weather record in 30 seconds

Record type
Flash Flood Warning
Affected area
Western Madison County, Illinois
Issued
June 28, 2026
Issuing authority
NWS St Louis MO

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 8 weeks ago; use the issuing agency's live warning service for current conditions in Western Madison County, Illinois.

Alert Details

A Flash Flood Warning (event code FFW) has been issued by the National Weather Service in St Louis MO. The alert is effective from June 8, 2026 at 10:54 AM CDT and expires June 8, 2026 at 5:00 PM CDT.

Affected Areas

The warning covers Western Madison County in southwestern Illinois, including Granite City, Alton, Edwardsville, Wood River, Bethalto, Pontoon Beach, Madison, Venice, East Alton, South Roxana, Roxana, Hartford, Worden, Livingston, Rosewood Heights and Dorsey. This includes Interstate 55 in Illinois between exits 33 and 37.

What You Should Do

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.

Expected Conditions

At 10:54 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 4 inches of rain have fallen, with additional rainfall amounts of 1 to 2 inches possible. Flash flooding is ongoing or expected to begin shortly.

Timeline

The Flash Flood Warning is in effect from June 8 at 10:54 AM CDT until June 8 at 5:00 PM CDT.

Original source: NOAA Official Notice ↗

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Nationwide notices with similar length or severity timing 8

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?
NWS St Louis MO has issued a Flash Flood Warning for Western Madison County in southwestern Illinois until 5:00 PM CDT Monday due to heavy rainfall from thunderstorms.
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 Western Madison County, 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.