weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

Dense Fog Advisory


URGENT - WEATHER MESSAGE
National Weather Service Indianapolis IN
821 PM EST Thu Nov 20 2025

INZ021-028>030-035>037-043-044-211000-
/O.NEW.KIND.FG.Y.0008.251121T0200Z-251121T1500Z/
Carroll-Warren-Tippecanoe-Clinton-Fountain-Montgomery-Boone-
Vermillion-Parke-
Including the cities of Rockville, Flora, Rosedale, Williamsport,
West Lafayette, Clinton, West Lebanon, Lebanon, Lafayette,
Zionsville, Crawfordsville, Montezuma, Attica, Delphi,
Veedersburg, Frankfort, Covington, and Fairview Park
821 PM EST Thu Nov 20 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM EST FRIDAY...

* WHAT...Visibility one quarter to one half mile in dense fog.

* WHERE...Boone, Clinton, Carroll, Fountain, Montgomery, Parke,
  Tippecanoe, Vermillion, and Warren Counties.

* WHEN...Until 10 AM EST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

AU

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
720 PM CST Thu Nov 20 2025

ILZ032-033-039-INZ010-011-019-211130-
/O.NEW.KLOT.FG.Y.0014.251121T0120Z-251121T1500Z/
Livingston-Iroquois-Ford-Newton-Jasper-Benton-
Including the cities of Fowler, Dwight, Rensselaer, Oxford,
Paxton, Morocco, Gibson City, Watseka, Fairbury, Gilman, DeMotte,
Kentland, Roselawn, and Pontiac
720 PM CST Thu Nov 20 2025 /820 PM EST Thu Nov 20 2025/

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CST /10 AM EST/ FRIDAY...

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

* WHERE...In Illinois, Livingston, Ford, and Iroquois Counties. In
  Indiana, Benton, Jasper, and Newton Counties.

* WHEN...Until 9 AM CST /10 AM EST/ Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Ratzer

URGENT - WEATHER MESSAGE
National Weather Service Lincoln IL
709 PM CST Thu Nov 20 2025

ILZ031-036>038-040>051-053-211000-
/O.NEW.KILX.FG.Y.0015.251121T0109Z-251121T1500Z/
Woodford-Fulton-Tazewell-McLean-Schuyler-Mason-Logan-De Witt-
Piatt-Champaign-Vermilion-Cass-Menard-Scott-Morgan-Sangamon-Macon-
Including the cities of Jacksonville, Springfield, Winchester,
Normal, Havana, Pekin, Clinton, Eureka, Petersburg, Urbana,
Decatur, Bloomington, Beardstown, Monticello, Danville,
Rushville, Lincoln, Canton, and Champaign
709 PM CST Thu Nov 20 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CST FRIDAY...

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

* WHERE...Portions of central, east central, and west central
  Illinois.

* WHEN...Until 9 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Erwin


Hazardous Weather Outlook


Hazardous Weather Outlook...UPDATED
National Weather Service Chicago/Romeoville IL
849 PM CST Thu Nov 20 2025

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-220300-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
849 PM CST Thu Nov 20 2025 /949 PM EST Thu Nov 20 2025/

This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.

.DAY ONE...Tonight.

Weather hazards expected...

  Limited Fog Risk.

DISCUSSION...

Areas of dense fog are likely overnight south of an approximately
Pontiac to Valparaiso line. Visibility as low as a quarter mile
is possible in some spots.


.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

  No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

$$

Hazardous Weather Outlook
National Weather Service Paducah KY
829 PM CST Thu Nov 20 2025

ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087-
100-107>112-114-220230-
Jefferson-Wayne IL-Edwards-Wabash-Perry IL-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 KY-Webster-Hopkins-Christian-Henderson-Daviess-McLean-
Muhlenberg-Todd-Perry MO-Bollinger-Cape Girardeau-Wayne MO-Carter-
Ripley-Butler-Stoddard-Scott-Mississippi-New Madrid-
829 PM CST Thu Nov 20 2025 /929 PM EST Thu Nov 20 2025/

This Hazardous Weather Outlook is for portions of southern
Illinois, southwest Indiana, western Kentucky, and southeast
Missouri.

.DAY ONE...Tonight

Areas of fog can be expect across the region. A Dense Fog
Advisory, for visibilities of 1/2 mile or less, is in effect
across most of southern Illinois, all of southeast Missouri, and
portions of west Kentucky along and west of a line from Salem to
the Land Between the Lakes.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Fog and dense fog is expected through mid morning Friday.

Showers and thunderstorms are expected across the area Friday.
The main threats will be lightning and heavy downpours.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

Hazardous Weather Outlook
National Weather Service Lincoln IL
249 PM CST Thu Nov 20 2025

ILZ027>031-036>038-040>057-061>063-066>068-071>073-211200-
Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-Schuyler-
Mason-Logan-De Witt-Piatt-Champaign-Vermilion-Cass-Menard-Scott-
Morgan-Sangamon-Christian-Macon-Moultrie-Douglas-Coles-Edgar-Shelby-
Cumberland-Clark-Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
249 PM CST Thu Nov 20 2025

This Hazardous Weather Outlook is for central Illinois, east
central Illinois, southeast Illinois and west central Illinois.

.DAY ONE...Tonight.

Areas of fog will develop again this evening, with the lowest
visibility occurring from about Jacksonville to Danville, southward
to I-70. The visibility will start to improve as rain moves into the
region late tonight.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated tonight.

$$

Geelhart

Hazardous Weather Outlook
National Weather Service Louisville KY
338 PM EST Thu Nov 20 2025

INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067-
070>078-081-082-212045-
Orange-Washington IN-Scott IN-Jefferson IN-Dubois-Crawford-Perry-
Harrison IN-Floyd-Clark IN-Hancock-Breckinridge-Meade-Ohio-Grayson-
Hardin-Bullitt-Jefferson-Oldham-Trimble-Henry-Shelby-Franklin-
Scott KY-Harrison KY-Spencer-Anderson-Woodford-Fayette-Bourbon-
Nicholas-Nelson-Washington KY-Mercer-Jessamine-Clark KY-Larue-Marion-
Boyle-Garrard-Madison-Butler-Edmonson-Hart-Green-Taylor-Casey-
Lincoln-Logan-Warren-Simpson-Allen-Barren-Monroe-Metcalfe-Adair-
Russell-Cumberland-Clinton-
338 PM EST Thu Nov 20 2025 /238 PM CST Thu Nov 20 2025/

This Hazardous Weather Outlook is for portions of southern Indiana
and central Kentucky.

.DAY ONE...Tonight.

Low clouds with patchy drizzle and mist may result in a reduction in
visibilities this evening and into the overnight hours.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Rain showers are expected across the outlook area on Friday. There is
a chance of embedded thunderstorms across southern Kentucky. The main
threats would be heavy rainfall and lightning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

&&

More information, along with other weather, hydrological and
climate information can be found, at weather.gov/louisville.

$$

Hazardous Weather Outlook
National Weather Service Wilmington OH
108 AM EST Thu Nov 20 2025

INZ050-058-059-066-073>075-080-KYZ089>100-OHZ053>056-060>065-070>074-
077>082-088-210615-
Wayne-Fayette-Union-Franklin-Ripley-Dearborn-Ohio-Switzerland-
Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant-Pendleton-Bracken-
Robertson-Mason-Lewis-Clark-Madison-Licking-Preble-Montgomery-Greene-
Pickaway-Fairfield-Butler-Warren-Clinton-Ross-Hocking-Hamilton-
Clermont-Brown-Highland-Adams-Pike-Scioto-
108 AM EST Thu Nov 20 2025

This Hazardous Weather Outlook is for east central Indiana,
southeast Indiana, northeast Kentucky, northern Kentucky, central
Ohio, south central Ohio, southwest Ohio and west central Ohio.

.DAY ONE...Today and tonight.

There is a low probability for widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Rain will occur across the area Friday into Friday night. There may
be a corridor of locally heavier rain which could cause some minor
flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE