Flash Flood Warning — Alexander County, Illinois
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Current Status
🌊 Active: Flash Flood Warning
Flash Flood Warning issued August 20 at 12:55AM CDT until August 20 at 5:45AM CDT by NWS Paducah KY
At 1255 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 4 inches of rain have fallen over the past 2 to 3 hours. Additional rainfall amounts up 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... Sikeston, Scott City, Chaffee, Cairo, Bloomfield, Advance, Oran, Miner, Benton, Puxico, Morley, Tamms, Kelso, Bell City, Hay-Wood City, Cape Girardeau Airport, Olive Branch, Horseshoe Lake Conservation Area, Thebes and Vanduser.
Effective August 20, 2026 at 1:55 AM ET · Expires August 20, 2026 at 6:45 AM ET
Event Details
Event Type
Flash Flood Warning
Severity
severe
Issued By
NWS Paducah KY
Expires
August 20, 2026 at 6:45 AM ET
Last Checked
1 minute ago
What To Do
📋 Official NWS Guidance
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Also In Effect For
This same Flash Flood Warning also covers:
Other Active Alerts in Illinois
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Flood Warning
Get Flash Flood Warning Alerts for Alexander County
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Frequently Asked Questions
What does a Flash Flood Warning mean for Alexander County, Illinois?
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Is this Flash Flood Warning currently active?
Yes — this alert is active as of our last check (1 minute ago). It's set to expire August 20, 2026 at 6:45 AM ET.
How do I get notified about Flash Flood Warning alerts for Alexander County?
Download StormCast free on Google Play and set Alexander County, Illinois as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
What other areas does this alert cover?
This same Flash Flood Warning is also in effect for Scott County, Stoddard County.