HAZARDOUS WEATHER OUTLOOK
Issue Date: 1037 AM CST TUE DEC 22 2009
Expiration: 1045 AM CST WED DEC 23 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...TODAY AND TONIGHT.
SNOW WILL TAPER TO SCATTERED LIGHT SNOW SHOWERS BY NOON TODAY
ACROSS MAINLY AREAS TO THE NORTH OF INTERSTATE 88. SCATTERED LIGHT
SNOW OR FREEZING RAIN IS EXPECTED TO DEVELOP ACROSS MAINLY AREAS
ALONG AND TO THE SOUTH OF INTERSTATE 88 THIS EVENING AND DURING
THE OVERNIGHT HOURS. UNTREATED AREA ROADS MAY CONTINUE TO BE
SLIPPERY TODAY AND TONIGHT.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.
A STRONGER STORM SYSTEM IS EXPECTED TO DEVELOP OVER THE SOUTHERN
PLAINS BY MID WEEK...AND WILL INTENSIFY AS IT LIFTS NORTHWARD UP
THE MISSISSIPPI VALLEY THROUGH THE END OF THE WEEK. THIS WILL
RESULT IN A PERIOD OF SNOW...SLEET AND FREEZING RAIN...DEVELOPING
AS EARLY AS WEDNESDAY AFTERNOON...AND CONTINUING INTO EARLY
THURSDAY MORNING...BEFORE PRECIPITATION CHANGES TO ALL RAIN
DURING THURSDAY. COLDER AIR WILL THEN CIRCULATE AROUND THE STORM
CENTER ALLOWING PRECIPITATION TO CHANGE BACK TO LIGHT SNOW OR SNOW
SHOWERS ON CHRISTMAS DAY...WITH PERIODS OF LIGHT SNOW CONTINUING
INTO SATURDAY AS THE LOW CENTER DRIFTS OFF ACROSS THE UPPER
MIDWEST.
THIS STORM SYSTEM HAS THE POTENTIAL TO IMPACT TRAVEL DURING THE
CHRISTMAS HOLIDAY PERIOD...ESPECIALLY HEADING WEST ACROSS
IOWA...AND NORTH INTO MINNESOTA AND WISCONSIN. PERSONS PLANNING
TRAVEL ACROSS THE MIDWEST BETWEEN WEDNESDAY AND SATURDAY SHOULD
MONITOR FURTHER FORECASTS AND STATEMENTS FOR THE LATEST
INFORMATION ON THIS DEVELOPING WINTER STORM.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT...
HOWEVER SPOTTERS ARE ENCOURAGED TO REPORT SNOWFALL TOTALS TO THE
NATIONAL WEATHER SERVICE CHICAGO.
&&
COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO
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