HAZARDOUS WEATHER OUTLOOK
Issue Date: 643 PM CST TUE NOV 24 2009
Expiration: 645 PM CST WED NOV 25 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL
WISCONSIN...SOUTH CENTRAL WISCONSIN AND SOUTHEAST WISCONSIN.
.DAY ONE...TONIGHT
AN AIR QUALITY ADVISORY IS IN EFFECT FOR LOCATIONS MAINLY ALONG AND
WEST OF A BERLIN...TO STOUGHTON...TO BRODHEAD LINE. AN AIR QUALITY
WATCH IS IN EFFECT FOR THE REMAINDER OF SOUTHERN WISCONSIN.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH TUESDAY
THE AIR QUALITY ADVISORY REMAINS IN EFFECT UNTIL 10 AM
WEDNESDAY...MAINLY ALONG AND WEST OF A BERLIN...TO STOUGHTON TO
BRODHEAD LINE. THE AIR QUALITY WATCH REMAINS IN EFFECT FOR ALL OF
SOUTHERN WISCONSIN THROUGH WEDNESDAY.
A STRONG UPPER LEVEL LOW PRESSURE SYSTEM WILL MOVE JUST SOUTH OF
SOUTHERN WISCONSIN WEDNESDAY NIGHT INTO THANKSGIVING DAY. THE LOW
WILL BE ACCOMPANIED BY COLDER AIR FLOWING INTO THE AREA FROM THE
WEST SOUTHWEST. THESE FEATURES WILL HELP CHANGE THE RAIN TO A RAIN
AND SNOW MIXTURE...THEN TO ALL SNOW...FROM SOUTHWEST TO NORTHEAST
ACROSS THE AREA WEDNESDAY NIGHT INTO THANKSGIVING MORNING.
THERE IS STILL SOME UNCERTAINTY WITH THE EXACT TRACK OF THE UPPER
LOW...WHICH WILL HAVE A BIG EFFECT ON ANY SNOW ACCUMULATIONS. AT
THIS TIME...LIGHT SNOW ACCUMULATIONS OF 1 TO 3 INCHES ARE
POSSIBLE...WITH LOCAL AMOUNTS UP TO 4 INCHES. THE HIGHEST AMOUNTS
ARE EXPECTED MAINLY SOUTHWEST OF MADISON.
THOSE WITH TRAVEL PLANS WEDNESDAY NIGHT INTO THANKSGIVING MORNING
SHOULD KEEP UP WITH THE LATEST FORECASTS.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT.
SPECIAL WEATHER STATEMENT
Issue Date: 350 PM CST TUE NOV 24 2009
Expiration: 1200 AM CST WED NOV 25 2009
...FIRST SNOW OF THE SEASON TAKING AIM ON THANKSGIVING HOLIDAY...
A COMPLEX WEATHER SITUATION IS SHAPING UP FOR WEDNESDAY NIGHT
INTO EARLY THANKSGIVING DAY. THE FIRST OF TWO LOW PRESSURE SYSTEMS
WILL BRING RAIN TO SOUTHERN WISCONSIN TONIGHT.
A SECOND AND COLDER LOW PRESSURE AREA IS EXPECTED TO MOVE FROM
SOUTH DAKOTA INTO IOWA WEDNESDAY AND ACROSS NORTHERN ILLINOIS INTO
NORTHWEST INDIANA WEDNESDAY NIGHT. A COLD RAIN OR WET SNOW SHOULD
DEVELOP WEDNESDAY EVENING WITH THE PRECIPITATION GRADUALLY
CHANGING TO ALL SNOW WEDNESDAY NIGHT FROM WEST TO EAST. THE RAIN
MAY NOT CHANGE COMPLETELY OVER TO SNOW ALONG THE LAKE MICHIGAN
SHORE UNTIL WELL AFTER MIDNIGHT THURSDAY OR PERHAPS AS LATE AS
DAYBREAK THANKSGIVING.
SNOW ACCUMULATIONS WILL BE TRICKY. TEMPERATURES WILL START IN THE
UPPER 30S AND GRADUALLY COOL INTO THE LOWER 30S AS THE RAIN
CHANGES TO WET SNOW. AT FIRST...MUCH OF THE SNOW WILL MELT AS IT FALLS
ON WARM GROUND. HOWEVER.. A SMALL AREA...PERHAPS JUST A FEW
COUNTIES...MAY PICK UP 3 TO 4 INCHES OR MORE OF SNOW. PRESENT
INDICATIONS ARE THAT THE MOST SNOW SHOULD ACCUMULATE SOUTH AND
WEST OF A LINE FROM THE WISCONSIN DELLS TO WAUKESHA TO BURLINGTON.
ELSEWHERE...AN INCH OR TWO OF SLUSHY SNOW IS POSSIBLE...MAINLY ON
GRASSY AREAS. BECAUSE MUCH OF THE SNOW SHOULD FALL AT
NIGHT...SLUSHY AND SLIPPERY ROADS ARE CERTAINLY POSSIBLE WEDNESDAY
NIGHT INTO THANKSGIVING MORNING.
STAY TUNED FOR LATER UPDATES AS THERE IS A GREAT DEAL OF
UNCERTAINTY IN THIS FORECAST.
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