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Jefferson County
Sunday November 23rd, 2025 :: 05:54 p.m. CST

Advisory

Dense Fog Advisory until 10:00AM Monday

* WHAT...Visibility one quarter mile or less in dense fog.

* WHERE...Portions of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri.

* WHEN...Until 10 AM CST /11 AM EST/ Monday.

* IMPACTS...Low visibility could make driving conditions hazardous.

* AFFECTED AREAS: JEFFERSON ... WAYNE ... EDWARDS ... WABASH ... PERRY ... FRANKLIN ... HAMILTON ... WHITE ... JACKSON ... WILLIAMSON ... SALINE ... GALLATIN ... UNION ... JOHNSON ... POPE ... HARDIN ... ALEXANDER ... PULASKI ... MASSAC ... GIBSON ... PIKE ... POSEY ... VANDERBURGH ... WARRICK ... SPENCER ... FULTON ... HICKMAN ... CARLISLE ... BALLARD ... MCCRACKEN ... GRAVES ... LIVINGSTON ... MARSHALL ... CALLOWAY ... CRITTENDEN ... LYON ... TRIGG ... CALDWELL ... UNION ... WEBSTER ... HOPKINS ... CHRISTIAN ... HENDERSON ... DAVIESS ... MCLEAN ... MUHLENBERG ... TODD ... PERRY ... BOLLINGER ... CAPE GIRARDEAU ... WAYNE ... CARTER ... RIPLEY ... BUTLER ... STODDARD ... SCOTT ... MISSISSIPPI ... NEW MADRID

Instructions:

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

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:
Moderate - Possible threat to life or property
Urgency:
Expected - Responsive action SHOULD be taken soon (within next hour)
Certainty:
Likely (p > ~50%)
Category:
Meteorological (inc. flood)
Event:
Dense Fog Advisory

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