Receive alerts from your local agencies
...or text your ZIP CODE to 888777 for mobile alerts

Full Notification

Jefferson County
Saturday June 20th, 2026 :: 09:57 p.m. CDT

Advisory

Flood Watch until 07:00AM Monday

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Portions of southern Illinois, including the following areas, Edwards, Franklin, Hamilton, Jefferson, Perry IL, Wabash, Wayne IL and White and southwest Indiana, including the following areas, Gibson, Pike, Posey, Vanderburgh and Warrick.

* WHEN...From Sunday afternoon through Monday morning.

* IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS... - Thunderstorms producing heavy rainfall moving over the same locations could produce flash flooding. Rainfall amounts of 2 to 3 inches are possible along with locally higher amounts. - http://www.weather.gov/safety/flood

* AFFECTED AREAS: JEFFERSON ... WAYNE ... EDWARDS ... WABASH ... PERRY ... FRANKLIN ... HAMILTON ... WHITE ... GIBSON ... PIKE ... POSEY ... VANDERBURGH ... WARRICK

Instructions:

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Address/Location
Jefferson County
100 S 10th St
Mount Vernon, IL 62864

Contact
Emergency: 9-1-1
Non-emergencies: 618-244-8000

Alert Details

Severity:
Severe - Significant threat to life or property
Urgency:
Future - Responsive action SHOULD be taken in the near future
Certainty:
Possible (p <= ~50%)
Category:
Meteorological (inc. flood)
Event:
Flood Watch

Navigate & Discover