HAZARDOUS WEATHER OUTLOOK
Issue Date: 1242 PM CST WED DEC 23 2009
Expiration: 445 AM CST THU DEC 24 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL
WISCONSIN...SOUTH CENTRAL WISCONSIN AND SOUTHEAST WISCONSIN.
.DAY ONE...TODAY AND TONIGHT
LIGHT FREEZING RAIN IS EXPECTED THIS AFTERNOON...MAINLY ALONG AND
SOUTH OF A LINE FROM THE WISCONSIN DELLS...TO WATERTOWN...TO
MILWAUKEE. LIGHT SNOW MAY MIX IN BY MID AFTERNOON.
A SURGE OF MOISTURE ALONG WITH AN UPPER LEVEL DISTURBANCE SPAWNED
BY A DEVELOPING LARGE AREA OF LOW PRESSURE IN THE SOUTHERN PLAINS
WILL BRING A MIXTURE OF SNOW...SLEET AND FREEZING RAIN TO SOUTHERN
WISCONSIN LATE THIS AFTERNOON AND TONIGHT. A WINTER WEATHER
ADVISORY HAS BEEN POSTED FOR THIS PERIOD.
FOR MORE DETAILED INFORMATION...SEE THE LATEST WINTER WEATHER
MESSAGE.
.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
THE WINTER WEATHER ADVISORY WILL REMAIN IN EFFECT THURSDAY
MORNING...DUE TO THE LIKELIHOOD OF A LINGERING MIXTURE OF LIGHT
FREEZING RAIN AND SLEET.
THE MIXTURE IS EXPECTED TO TRANSITION TO PERIODS OF RAIN AND DRIZZLE
THURSDAY AFTERNOON...AS A SURGE OF DEEP MOISTURE AND WARMER AIR
PUSHES NORTHWARD INTO SOUTHERN WISCONSIN AHEAD OF STRONG LOW
PRESSURE OVER MISSOURI.
THE RAIN IS EXPECTED TO BE HEAVY AT TIMES THURSDAY NIGHT. RAINFALL
OF THREE QUARTERS OF AN INCH...TO ONE AND ONE QUARTER INCH...IS
EXPECTED TO FALL QUICKLY ON TOP OF THE CURRENT SNOW PACK AND FROZEN
GROUND. THIS WILL LIKELY RESULT IN MINOR FLOODING OF AREA
CREEKS...RIVERS...AND STREAMS. RUNOFF WOULD ALSO CAUSE PONDING OF
WATER ON AREA ROADWAYS.
PRIOR TO THURSDAY NIGHT...IT WILL BE A GOOD IDEA TO MAKE SURE THE
CLOSEST STREET DRAIN TO YOUR RESIDENCE IS UNCLOGGED BY SNOW AND
DEBRIS.
THE PERIODS OF RAIN WILL CHANGE BACK TO OCCASIONAL SNOW LATE
THURSDAY NIGHT OR FRIDAY...AS COLDER AIR WRAPS AROUND THE WEAKENING
AREA OF LOW PRESSURE OVER IOWA. PERIODS OF LIGHT SNOW WILL THEN
CONTINUE INTO SATURDAY...WITH LIGHT ACCUMULATIONS AS THE LOW
PRESSURE AREA MEANDERS TO THE EAST.
THE PERIODS OF MIXED PRECIPITATION WILL LIKELY AFFECT HOLIDAY
TRAVEL...ESPECIALLY TONIGHT INTO THURSDAY MORNING. STAY UPDATED ON
THE LATEST FORECAST CONCERNING THIS UPCOMING PERIOD OF MIXED
PRECIPITATION...AND BE READY TO ALTER YOUR TRAVEL PLANS.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED...BUT SNOW...SLEET AND ICE
REPORTS ARE APPRECIATED.
SPECIAL WEATHER STATEMENT
Issue Date: 1216 PM CST WED DEC 23 2009
Expiration: 245 PM CST WED DEC 23 2009
...TRAVEL TO BECOME INCREASINGLY HAZARDOUS THIS AFTERNOON...
AT NOON THE LEADING EDGE OF AN AREA OF PRECIPITATION WAS BEGINNING
TO MOVE INTO SOUTHERN WISCONSIN FROM NORTHERN ILLINOIS. THIS
PRECIPITATION WILL BEGIN TO FALL IN THE FORM OF FREEZING RAIN
EARLY THIS AFTERNOON.
ROADS WILL BECOME ICE COVERED AND HAZARDOUS...ESPECIALLY SECONDARY
ROADS AND COUNTY HIGHWAYS. USE EXTRA CAUTION IF DRIVING THIS
AFTERNOON AND REDUCE YOUR SPEED TO ACCOUNT FOR CONDITIONS.
LATER IN THE AFTERNOON AND INTO THE EVENING...PRECIPITATION SHOULD
CHANGE OVER TO SNOW. PRESENT INDICATIONS ARE THAT THE SNOW MAY
COME IN A QUICK BURST...WITH SNOWFALL RATES APPROACHING 1 INCH PER
HOUR. THE PRECIPITATION WILL THEN CHANGE BACK TO FREEZING RAIN
OR SLEET LATER TONIGHT.
THE HIGHER SNOWFALL RATES...PRECEDING ICY CONDITIONS...AND TIME OF
THE DAY WILL COMBINE TO MAKE TRAVEL HAZARDOUS THIS EVENING. ALLOW
EXTRA TIME TO REACH YOUR DESTINATION.
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