Flood Advisory — St. Louis County, Missouri
Minor flooding is expected — not severe enough for a warning, but potentially inconvenient or hazardous for travel.
Current Status
✅ No Active Flood Advisory
Last one for St. Louis County ended September 10, 2026 at 4:30 AM ET. This page updates automatically the moment the National Weather Service issues a new one.
Event Details
Event Type
Flood Advisory
Severity
minor
Issued By
NWS St Louis MO
Last Checked
1 hour ago
Also In Effect For
This same Flood Advisory also covers:
Other Active Alerts in Missouri
Flood Advisory
Flood Advisory
Flood Advisory
Flood Advisory
Severe Thunderstorm Warning
Severe Thunderstorm Warning
Get Flood Advisory Alerts for St. Louis County
StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
Frequently Asked Questions
What does a Flood Advisory mean for St. Louis County, Missouri?
Minor flooding is expected — not severe enough for a warning, but potentially inconvenient or hazardous for travel.
Is this Flood Advisory currently active?
Not right now. The last one for St. Louis County ended September 10, 2026 at 4:30 AM ET. This page automatically updates the moment a new one is issued.
How do I get notified about Flood Advisory alerts for St. Louis County?
Download StormCast free on Google Play and set St. Louis County, Missouri 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 Flood Advisory is also in effect for Franklin County, Jefferson County, Warren County, St. Charles County.