Icy travel conditions possible across the Chicago Metro area tonight as a wintry mix of rain, freezing rain, sleet and snow develops

After several days of mild weather, temperature have begun to fall across the
Chicago area as colder air arrives. A storm system from the southern Plains is
expected to move northeast through the Ohio Valley tonight spreading a variety
of precipitation across the area. The precipitation should begin as rain but
transition to freezing rain, sleet and eventually snow as the colder air arrives
and temperature drop below freezing not only at the surface but aloft. Areas north
and west of Chicago should get mainly snow with a few inches of accumulation possible,
while from the city south and east mixed bag of wintry precipitation could create hazardous
travel conditions especially on untreated roads and walkways. If it possible that some
winter-type  precipitation advisories or warning will be issued for much of the Chicago
Metro area later today or this evening.

In the event that conditions worsen, the Chicago Weather Center Severe Weather blog will be
activated to thoroughly cover the situation.







WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DUPAGE-COOK-
LA SALLE-KENDALL-GRUNDY-WILL-LIVINGSTON-
INCLUDING THE CITIES OF...ROCKFORD...BELVIDERE...WOODSTOCK...
WAUKEGAN...OREGON...DIXON...DEKALB...AURORA...WHEATON...CHICAGO...
OTTAWA...OSWEGO...MORRIS...JOLIET...PONTIAC
1247 PM CST SAT JAN 12 2013

...WINTRY MIX INCLUDING LIGHT SNOW ACCUMULATION TONIGHT...

TEMPERATURES CONTINUE TO FALL THIS AFTERNOON BEHIND A COLD
FRONT...AND WILL LIKELY DROP BELOW FREEZING FROM WEST TO EAST
THIS EVENING INTO THE EARLY OVERNIGHT HOURS. A STORM SYSTEM
ORGANIZING SOUTH OF THE AREA TONIGHT WILL SPREAD PRECIPITATION
NORTHWARD ACROSS THE AREA BETWEEN 7 AND 11 PM...WHICH WILL PERSIST
THROUGH MUCH OF THE NIGHT.

PRECIPITATION OVER THE NORTHERN CHICAGO SUBURBS AND WEST AND
SOUTHWEST ACROSS NORTH CENTRAL ILLINOIS...INCLUDING ROCKFORD AND
DIXON...WILL LIKELY BEGIN AS SNOW OR SLEET BEFORE CHANGING TO ALL
SNOW. FARTHER SOUTH FROM CHICAGO SOUTHWEST ALONG THE INTERSTATE 55
CORRIDOR TOWARD PONTIAC...PRECIPITATION WILL BEGIN AS RAIN BEFORE
TRANSITIONING TO SLEET IN THE EVENING AND THEN EVENTUALLY TO ALL
SNOW OVERNIGHT. A TEMPORARY PERIOD OF FREEZING RAIN IS POSSIBLE
DEPENDING ON HOW QUICKLY TEMPERATURES FALL.

THE POTENTIAL EXISTS FOR SNOW AND SLEET TO BRIEFLY FALL HEAVILY
AT TIMES...WHICH COMBINED WITH TEMPERATURES DROPPING BELOW
FREEZING COULD RESULT IN TRAVEL BECOMING HAZARDOUS. MOST AREAS
FROM CHICAGO WEST ACROSS NORTH CENTRAL ILLINOIS WILL EXPERIENCE
SNOWFALL AMOUNTS OF 2 INCHES OR LESS. A LOCALIZED BAND OR TWO OF
HEAVIER SNOWFALL AMOUNTS OF A FEW INCHES MAY OCCUR.

A CHANCE OF LIGHT PRECIPITATION WILL LINGER INTO EARLY SUNDAY
MORNING...WHICH INCLUDES A CHANCE OF FREEZING DRIZZLE WHICH COULD
MAINTAIN ANY POOR ROAD CONDITIONS THAT DEVELOP.

PERSONS PLANNING TRAVEL TONIGHT OR EARLY SUNDAY MORNING SHOULD
MONITOR LATER FORECASTS ON THIS WINTRY PRECIPITATION EVENT AND BE
PREPARED FOR ENCOUNTERING SLICK ROADS AS TONIGHT PROGRESSES.

 

ILZ023-033-039-INZ001-002-010-011-019-130430-
KANKAKEE-IROQUOIS-FORD-LAKE IN-PORTER-NEWTON-JASPER-BENTON-
INCLUDING THE CITIES OF...KANKAKEE...WATSEKA...PAXTON...GARY...
VALPARAISO...MOROCCO...RENSSELAER...FOWLER
1247 PM CST SAT JAN 12 2013 /147 PM EST SAT JAN 12 2013/

...WINTRY MIX DEVELOPING LATE TONIGHT...

TEMPERATURES ARE BEGINNING TO FALL ACROSS THE REGION EARLY THIS
AFTERNOON AS A COLD FRONT PUSHES EAST...AND WILL LIKELY FALL TO
OR BELOW FREEZING BY LATE EVENING. A STORM SYSTEM ORGANIZING TO
THE SOUTH OF THE AREA WILL SPREAD RAIN...OR A MIX OF RAIN AND
SLEET ACROSS EAST CENTRAL ILLINOIS AND NORTHWEST INDIANA BETWEEN 6
AND 9 PM WHICH WILL THEN PERSIST THROUGH THE EVENING.

PRECIPITATION WILL TRANSITION TO A MIX WITH SLEET AND POSSIBLY
SNOW OVERNIGHT ACROSS KANKAKEE...GIBSON CITY...AND INTO NORTHWEST
INDIANA. IF THIS TRANSITION WERE TO OCCUR EARLIER...FREEZING RAIN
WILL BE POSSIBLE INCLUDING MINOR ICE ACCUMULATIONS AS THE
PRECIPITATION MAY BE MODERATE TO HEAVY AT TIMES. SNOW
ACCUMULATIONS ARE EXPECTED TO BE ONE HALF INCH OR LESS.

A CHANCE OF LIGHT PRECIPITATION WILL LINGER INTO SUNDAY MORNING...
WHICH INCLUDES A CHANCE OF FREEZING DRIZZLE WHICH COULD MAINTAIN
ANY POOR ROAD CONDITIONS THAT DEVELOP.

PERSONS PLANNING TRAVEL LATE TONIGHT OR EARLY SUNDAY MORNING
SHOULD MONITOR LATER FORECASTS ON THIS WINTRY PRECIPITATION EVENT
AND BE PREPARED FOR ENCOUNTERING SLICK ROADS AS TONIGHT
PROGRESSES.

 

 

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