SPECIAL WEATHER STATEMENT
Issue Date: 240 AM CST TUE DEC 22 2009
Expiration: 500 AM CST TUE DEC 22 2009
...BAND OF MODERATE TO LOCALLY HEAVY SNOW EARLY THIS MORNING...
NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED A 20 TO 30 MILE
WIDE BAND OF MODERATE TO LOCALLY HEAVY SNOW MOVING EAST AT
10 TO 15 MILES AN HOUR ACROSS PORTIONS OF NORTHEAST IOWA AND
NORTHWEST ILLINOIS. THE LEADING EDGE AT 230 AM CST EXTENED
FROM NEAR DUBUQUE...TO SAVANNA...STERLING...WALNUT...PRINCETON
AND GRANVILLE. VISIBILITIES WILL DROP TO AROUND ONE HALF MILE
IN THIS BAND WITH SNOWFALL RATES AROUND ONE INCH PER HOUR...AS
IT GRADUALLY SLIDES EAST. ROAD CONDITIONS WILL DETEORIATE
QUICKLY AS THE SNOW ACCUMULATES RAPIDLY. IF YOU WILL BE DRIVING
EARLY THIS MORNING... SLOW DOWN AND GIVE YOURSELF PLENTY OF
TIME TO REACH YOUR DESTINATION. SNOWFALL TOTALS BY DAYBREAK
ACROSS MUCH OF THE AREA ALONG AND EAST OF A DUBUQUE TO CLINTON
TO MANLIUS LINE WILL RANGE FROM 2 TO 3 INCHES... WITH LOCALLY
4 INCHES POSSIBLE SHOULD THE SNOW BAND SLOW IN MOVEMENT.
HAZARDOUS WEATHER OUTLOOK
Issue Date: 506 AM CST MON DEC 21 2009
Expiration: 515 AM CST TUE DEC 22 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHWEST ILLINOIS...WEST CENTRAL ILLINOIS...EAST
CENTRAL IOWA...NORTHEAST IOWA...SOUTHEAST IOWA AND NORTHEAST
MISSOURI.
.DAY ONE...TODAY AND TONIGHT
SNOW WILL SPREAD ACROSS AREAS ALONG AND NORTH OF INTERSTATE 80
TONIGHT...WITH ACCUMULATIONS OF 1 TO 3 INCHES. THE HIGHEST AMOUNTS
SHOULD BE ALONG THE HIGHWAY 20 CORRIDOR. LITTLE IF ANY ACCUMULATION
IS EXPECTED SOUTH OF INTERSTATE 80.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
SNOW WILL COME TO AN END BY MID MORNING ON TUESDAY OVER NORTHEAST
IOWA AND NORTHWEST ILLINOIS. AREAS OF FREEZING DRIZZLE WILL
THEN BE POSSIBLE BY TUESDAY AFTERNOON INTO TUESDAY NIGHT OVER
MUCH OF THE OUTLOOK AREA...POTENTIALLY LEADING TO SLICK DRIVING
CONDITIONS.
A MAJOR WINTER STORM WILL THEN IMPACT THE AREA FROM WEDNESDAY
THROUGH FRIDAY. WHILE THE EXACT TRACK OF THIS STORM REMAINS
UNCERTAIN...MANY OF THE LATEST COMPUTER MODELS SUGGEST THIS STORM
COULD TRACK NEAR OR POSSIBLY OVER THE OUTLOOK AREA. SHOULD THIS
OCCUR WARMER AIR WOULD OVERSPREAD THE REGION AND RESULT IN A
WINTRY MIX OF SNOW...SLEET AND FREEZING RAIN ACROSS THE OUTLOOK
AREA WEDNESDAY INTO WEDNESDAY NIGHT BEFORE CHANGING TO ALL RAIN.
SIGNIFICANT SNOW ACCUMULATIONS WOULD BE POSSIBLE OVER NORTHEAST
IOWA AND FAR NORTHWEST ILLINOIS...WHILE SIGNIFICANT ICE
ACCUMULATIONS WOULD BE POSSIBLE OVER CENTRAL PORTIONS OF THE
OUTLOOK AREA BETWEEN HIGHWAY 30 AND HIGHWAY 34.
COLD AIR WRAPPING AROUND THE BACK SIDE OF THE DEPARTING STORM
SYSTEM WOULD THEN CHANGE THE RAIN TO SNOW OVER MOST OF THE
REGION BY DAYBREAK CHRISTMAS MORNING...WITH SOME ACCUMULATION
POSSIBLE. IN ADDITION THIS SYSTEM WILL BRING STRONG WINDS.
WITH THE TRACK OF THIS STORM STILL UNCERTAIN...THE DETAILS OF
PRECIPITATION TYPE AND AMOUNTS REMAIN DIFFICULT TO DETERMINE
AT THIS TIME. INTERESTED INDIVIDUALS...ESPECIALLY THOSE WITH
TRAVEL PLANS AHEAD OF THE CHRISTMAS HOLIDAY...ARE URGED TO
MONITOR LATER FORECASTS AND OUTLOOKS CONCERNING THIS MAJOR WINTER
STORM.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. HOWEVER
REPORTS OF SNOW ACCUMULATIONS TONIGHT WOULD BE APPRECIATED.
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