Some Minor Ice Accumulation Possible Overnight — Especially Sidewalks and Parking Lots

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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
609 PM CST FRI DEC 28 2012

WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DUPAGE-COOK-
LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-IROQUOIS-FORD-
LAKE IN-PORTER-NEWTON-JASPER-BENTON-
INCLUDING THE CITIES OF…ROCKFORD…BELVIDERE…WOODSTOCK…
WAUKEGAN…OREGON…DIXON…DEKALB…AURORA…WHEATON…CHICAGO…
OTTAWA…OSWEGO…MORRIS…JOLIET…KANKAKEE…PONTIAC…
WATSEKA…PAXTON…GARY…VALPARAISO…MOROCCO…RENSSELAER…
FOWLER
609 PM CST FRI DEC 28 2012 /709 PM EST FRI DEC 28 2012/

PATCHY FREEZING DRIZZLE IS POSSIBLE ACROSS PORTIONS OF NORTHERN
ILLINOIS AND NORTHWEST INDIANA EARLY THIS EVENING…ALONG WITH
AREAS OF FOG.

MOIST LOW LEVELS…COMBINED WITH A WEAK UPPER LEVEL DISTURBANCE
PASSING OVER THE AREA THIS EVENING…WAS RESULTING IN AREAS OF
FOG AND PATCHY FREEZING DRIZZLE…OCCASIONALLY ALTERNATING WITH A
FEW LIGHT SNOW FLURRIES WHERE SLIGHTLY DEEPER CLOUD LAYERS
DEVELOP. SURFACE TEMPERATURES GENERALLY AT OR JUST BELOW FREEZING
MAY RESULT IN SOME MINOR ICE ACCUMULATION WHERE FREEZING DRIZZLE
OCCURS…PARTICULARLY ON UNTREATED SURFACES SUCH AS SIDEWALKS…
PARKING LOTS AND LIGHTLY TRAVELED ROADS…ESPECIALLY OUTSIDE OF
THE SLIGHTLY WARMER MORE URBANIZED AREAS OF CHICAGOLAND. LIGHT
WINDS WERE ALSO COMBINING WITH THE MOIST LOW LEVEL AIR TO PRODUCE
AREAS OF FOG…REDUCING VISIBILITY TO 1 TO 3 MILES OVER PORTIONS
OF NORTH CENTRAL ILLINOIS AND WITH A FEW AREAS EXPERIENCING
VISIBILITY REDUCED LOCALLY TO LESS THAN A MILE.

ANOTHER UPPER DISTURBANCE APPROACHING LATER THIS EVENING SHOULD
PRODUCE DEEPER…COLDER CLOUDS WHICH SHOULD FAVOR LIGHT SNOW OR
FLURRIES RATHER THAN FREEZING DRIZZLE.

IF DRIVING…OR WALKING ACROSS NORTHERN ILLINOIS OR NORTHWEST
INDIANA THIS EVENING…BE ALERT FOR THE POTENTIAL FOR SOME LIGHT
ICE ACCUMULATION FROM FREEZING DRIZZLE AND USE APPROPRIATE
CAUTION.


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