Dense Fog Advisory: Dense Fog Expected Near I-88

The City of Chicago is likely to escape much of the fog. Visibility at O’Hare International Airport at 4:51 a.m. was 9.00 miles. Dense fog is expected along I-88 and just north of I-88. Up to an inch of snow is possible and falling temperatures expected later today.

URGENT – WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
315 AM CST MON JAN 23 2012

…AREAS OF DENSE FOG THROUGH MID MORNING TODAY…

WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DUPAGE-COOK-
LA SALLE-
INCLUDING THE CITIES OF…ROCKFORD…BELVIDERE…WOODSTOCK…
WAUKEGAN…OREGON…DIXON…DEKALB…AURORA…WHEATON…CHICAGO…
OTTAWA
315 AM CST MON JAN 23 2012

…DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CST THIS MORNING…

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A DENSE FOG
ADVISORY…WHICH IS IN EFFECT UNTIL 9 AM CST THIS MORNING.

* TIMING…AREAS OF DENSE FOG HAVE DEVELOPED ACROSS MUCH OF NORTH
CENTRAL AND NORTHEASTERN ILLINOIS THIS MORNING ALONG A WARM
FRONTAL BOUNDARY. EXPECT THIS DENSE FOG TO PERSIST THROUGH MID
MORNING BEFORE CONDITIONS IMPROVE.

* VISIBILITY…AREAS OF DENSE FOG WILL REDUCE THE VISIBILITY UNDER
A QUARTER MILE AT TIMES THIS MORNING.

* IMPACTS…THIS WILL MAKE TRAVEL HAZARDOUS. MOTORISTS ARE URGED
TO USE EXTRA CATION AT UNCONTROLLED INTERSECTIONS AND AT RAIL
ROAD CROSSINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING…SLOW DOWN…
USE YOUR HEADLIGHTS…AND LEAVE PLENTY OF DISTANCE AHEAD OF YOU.



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