Wind Chill Advisory 4, NWS La Crosse, WI

000 
WWUS43 KARX 302055
WSWARX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
255 PM CST WED JAN 30 2008

...WIND CHILLS CONTINUE TO IMPROVE...

.HIGH PRESSURE EXTENDED FROM NORTH DAKOTA INTO KENTUCKY THIS
AFTERNOON. THIS HIGH WILL CONTINUE TO SLOWLY BUILD INTO THE AREA
AND ALLOW THE WIND SPEEDS TO DECREASE. SUSTAINED SPEEDS ARE
EXPECTED TO DROP BELOW 10 MPH BY LATE AFTERNOON FOR MOST
LOCATIONS. UNTIL THEN...DANGEROUS WIND CHILLS WILL CONTINUE FOR
THE REMAINDER OF THE AFTERNOON FOR AREAS NORTH OF HIGHWAY 10. BY
EVENING...THE HIGH WILL BE OVER THE AREA ALLOWING FOR A
SUBSTANTIAL DECREASE IN THE WINDS SPEEDS AND THE END TO THE
DANGEROUS WIND CHILLS.

WIZ034-042>044-302200-
/O.EXP.KARX.WC.Y.0004.000000T0000Z-080130T2100Z/
JACKSON-MONROE-JUNEAU-ADAMS-
INCLUDING THE CITIES OF...BLACK RIVER FALLS...SPARTA/TOMAH...
MAUSTON
255 PM CST WED JAN 30 2008

...WIND CHILL ADVISORY WILL EXPIRE AT 3 PM CST THIS AFTERNOON...

THE WIND CHILL ADVISORY WILL EXPIRE AT 3 PM CST THIS AFTERNOON. 

WIND SPEEDS FOR ALMOST ALL OF THE AREA HAVE DROPPED BELOW 10 MPH
PUTTING AN END TO THE DANGEROUS WIND CHILLS.

$$

WIZ017-029-310000-
/O.CON.KARX.WC.Y.0004.000000T0000Z-080131T0000Z/
TAYLOR-CLARK-
INCLUDING THE CITIES OF...MEDFORD...NEILLSVILLE
255 PM CST WED JAN 30 2008

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
AFTERNOON...

A WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
AFTERNOON. 

WEST WINDS OF 10 TO 15 MPH...COMBINED WITH TEMPERATURES IN THE
SINGLE DIGITS BELOW ZERO WILL CONTINUE TO PRODUCE DANGEROUS WIND
CHILLS THROUGH THE REMAINDER OF AFTERNOON. EXPECT WIND CHILL VALUES
TO AVERAGE 20 TO 30 BELOW ZERO. CONDITIONS WILL IMPROVE FOR THE
EVENING AS SUSTAINED WIND SPEEDS DECREASE BELOW 10 MPH.

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

$$

04

WEATHER.GOV/LACROSSE

000 
WWUS43 KARX 302353
WSWARX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LA CROSSE WI
553 PM CST WED JAN 30 2008

...DANGEROUS WIND CHILL THREAT ENDED...

.LIGHT WINDS ARE EXPECTED TONIGHT...WHICH WILL PRECLUDE THE THREAT
FOR A DANGEROUS WIND CHILL EFFECT.

WIZ017-029-310100-
/O.EXP.KARX.WC.Y.0004.000000T0000Z-080131T0000Z/
TAYLOR-CLARK-
INCLUDING THE CITIES OF...MEDFORD...NEILLSVILLE
553 PM CST WED JAN 30 2008

...WIND CHILL ADVISORY WILL EXPIRE AT 6 PM CST THIS AFTERNOON...

THE WIND CHILL ADVISORY WILL EXPIRE AT 6 PM CST THIS AFTERNOON. 

WIND SPEEDS ACROSS THE AREA HAVE DROPPED BELOW 10 MPH...THUS ENDING
THE THREAT FOR DANGEROUS WIND CHILLS.

$$

WEATHER.GOV/LACROSSE

THOMPSON

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LA CROSSE WI
1108 AM CST WED JAN 30 2008

.UPDATE...

A STRONG AREA OF LOW PRESSURE REMAINS CENTERED OVER ONTARIO LATE
THIS MORNING WITH HIGH PRESSURE STRETCHING FROM NORTH DAKOTA INTO
TENNESSEE. THE GRADIENT BETWEEN THESE TWO SYSTEMS CONTINUES TO
PRODUCE SUSTAINED WIND SPEEDS OF 10 MPH OR GREATER OVER MUCH OF
THE AREA. HOWEVER...AS THE AFTERNOON PROGRESSES...THESE WINDS OF
10 MPH OR HIGHER WILL BECOME LIMITED TO AREAS ALONG AND NORTH OF
INTERSTATE 94 IN CENTRAL WISCONSIN. THIS IS ALSO THE AREA WHERE
TEMPERATURES WILL BE THE COLDEST WITH AFTERNOON HIGHS IN THE
SINGLE DIGITS ABOVE AND BELOW ZERO. THE COMBINATION OF THESE
TEMPERATURES AND WINDS WILL CONTINUE TO PRODUCE WIND CHILLS IN THE
ADVISORY CATEGORY. WILL CONVERT THE WIND CHILL WARNING TO AN
ADVISORY FOR ALL OR PART OF THE AFTERNOON FOR THE COUNTIES NORTH
AND EAST OF INTERSTATE 94. WILL LET THE WIND CHILL WARNING EXPIRE
FOR THE REMAINDER OF THE AREA AS WIND SPEEDS DROP BELOW 10 MPH.

04

&&

.PREV DISCUSSION... /ISSUED 255 AM CST WED JAN 30 2008/

SHORT TERM...TODAY THROUGH FRIDAY NIGHT

FORECAST CONCERNS CONTINUE TO BE WIND CHILLS TODAY...THEN FOCUS
SHIFTS TO SNOW CHANCES TONIGHT THROUGH THURSDAY NIGHT.

DATA ANALYSIS AT 2 AM HAD DEEP 973MB LOW OVER LAKE HURON WITH BACK
EDGE OF -SN WELL EAST OF THE FORECAST AREA NOW. FRIGID TEMPERATURES
AND GUSTY NORTHWEST WINDS BEHIND THE LOW PRODUCING WIND CHILLS IN
THE MINUS 25 TO MINUS 45 DEGREE RANGE ACROSS OUR AREA. MEANWHILE...
RIDGE OF HIGH PRESSURE EXTENDED FROM THE DAKOTAS INTO MO. THIS WILL
BE MOVING INTO THE AREA BY THIS AFTERNOON...EVENTUALLY SLACKENING
THE WINDS/WIND CHILLS. ON SATELLITE...WATER VAPOR IMAGERY WAS
SHOWING A SIGNIFICANT MID-LEVEL SHORTWAVE TROUGH MOVING EAST ACROSS
THE INTERMOUNTAIN WEST AT THIS TIME. THIS FEATURE WILL BE OUR
WEATHER MAKER TONIGHT THROUGH THURSDAY NIGHT. MORE ON THIS LATER.

00Z 30JAN08 GFS AND NAM IN VERY GOOD AGREEMENT THROUGH THE SHORT
TERM...LENDING TO MODERATELY HIGH FORECAST CONFIDENCE.

FOR TODAY...THE LOW OVER LAKE HURON EARLY THIS MORNING WILL EJECT
NORTHEAST WELL INTO EASTERN ONTARIO WHILE THE RIDGE OF HIGH PRESSURE
BUILDS INTO THE UPPER MIDWEST. THIS WILL EVENTUALLY SLACKEN THE
PRESSURE GRADIENT AND WINDS ACROSS THE AREA THROUGH THIS MORNING.
ALL OF THE AREA WILL STILL BE MEETING WIND CHILL WARNING CRITERIA
(WIND CHILLS BELOW MINUS 35) THROUGH THIS MORNING. WILL THEREFORE
CONTINUE THE WIND CHILL WARNING THROUGH NOON. KIND OF CONCERNED
ABOUT AREAS NORTHEAST OF I-94 THIS AFTERNOON AS GRADIENT WINDS
REMAIN IN THE 10-20 MPH RANGE THROUGH MUCH OF THE AFTERNOON. MAY
HAVE TO HAVE A WIND CHILL ADVISORY FOR THAT AREA GOING INTO THE
AFTERNOON HOURS. WILL LET THE DAYSHIFT ASSESS THE SITUATION THIS
MORNING. OTHERWISE...LOOKS LIKE THE AREA WILL START OFF MOSTLY CLEAR
THIS MORNING...BUT THEN HIGH AND MID CLOUD WILL START TO INCREASE
DURING THE LATE MORNING/AFTERNOON HOURS IN ADVANCE OF STRENGTHENING
LOW PRESSURE MOVING INTO THE SOUTHERN PLAINS AND WEAK MID-LEVEL
TROUGH MOVING EAST ACROSS CENTRAL/NORTHERN PLAINS.

SNOW WILL BECOME LIKELY ACROSS NORTHEAST IA INTO FAR SOUTHWEST WI
TONIGHT AS THE SURFACE LOW OVER THE SOUTHERN PLAINS FEEDS MOISTURE
NORTHWARD FOR THE MID LEVEL TROUGH TO WORK WITH. INCREASING
ISENTROPIC LIFT/FRONTOGENETIC FORCING (ESPECIALLY IN THE 925-850MB
LAYER) WILL EVENTUALLY SATURATE THE COLUMN ROUGHLY ALONG AND SOUTH
OF A LINE FROM RICHLAND CENTER THROUGH OSAGE IA. GENERALLY EXPECTING
AN INCH IN THIS AREA. THE LIFT CONTINUES THURSDAY FOR THE LIKELIHOOD
OF -SN ACROSS THE SOUTH WHERE AROUND ANOTHER INCH IS EXPECTED.
TROUGH AND ASSOCIATED LIFT EVENTUALLY MOVE EAST OF THE AREA THURSDAY
NIGHT. BY THIS TIME...MAIN ENERGY OF THE TROUGH WILL BE ABSORBED BY
DEEPENING SURFACE LOW MOVING INTO THE OHIO RIVER VALLEY.

00Z 30JAN08 GFS/NAM/SREF ALL SHOWING THE LOW OVER THE OHIO RIVER
VALLEY REMAINING EAST OF THE AREA ON FRIDAY. HAVE THEREFORE REMOVED
-SN CHANCES ACROSS OUR AREA.

MODELS SHOWING ANOTHER SURFACE LOW MOVING EAST ALONG THE CANADIAN
BORDER FRIDAY NIGHT WITH BROAD AREA OF WARM AIR ADVECTION/ISENTROPIC
LIFT TAKING PLACE ACROSS MN INTO WI. WENT WITH LOW END -SN CHANCES
TO COVER THIS.

TEMPERATURE-WISE...WILL SEE SLOW MODERATION IN TEMPERATURES WITH
COLDEST CORE OF AIR THIS MORNING MOVING NORTHEAST WITH DEPARTING
LOW. HIGHS TODAY WILL STRUGGLE INTO THE SINGLE DIGITS BELOW TO
SINGLE DIGITS ABOVE ZERO...BUT WILL EVENTUALLY WARM INTO THE 20S
BY FRIDAY.

LONG TERM...SATURDAY THROUGH TUESDAY

00Z 30JAN08 GFS/ECMWF KEEP ACTIVE PATTERN GOING THROUGH THE EXTENDED
PERIOD WITH MID-LEVEL SHORTWAVE/WEAK SURFACE LOW MOVING ACROSS THE
AREA ON SATURDAY. FORCING NOT THAT IMPRESSIVE WITH THIS
FEATURE...BUT STILL WARRANTS AT LEAST A SMALL CHANCE OF -SN. NEXT
CHANCE FOR -SN WILL BE SUNDAY NIGHT THROUGH TUESDAY AS LOW PRESSURE
ORGANIZES OVER THE SOUTHERN ROCKIES AND EJECTS NORTHEAST INTO THE
MIDWEST. CURRENT EXTENDED GRID DATABASE HAS THIS COVERED WELL...SO
NO CHANGES WERE MADE.

AVIATION...TONIGHT AND WEDNESDAY

STRONG WINDS WILL BE ON THE DECREASE THROUGH THE MORNING AS DEEP
SURFACE LOW OVER THE GREAT LAKES PULLS AWAY. CLEAR SKIES WILL GIVE
WAY TO SCT-BKN VFR CEILINGS LATER THIS AFTERNOON AND EVENING OVER
BOTH SITES. THESE CEILINGS MAY LOWER BELOW 5KFT AFT 03Z
THURSDAY...AND COULD BRING SOME VERY LIGHT SNOW OR FLURRIES...THOUGH
NOT EXPECTING VSBY RESTRICTIONS OF ANY SUBSTANCE YET. WINDS SHOULD
FALL OFF QUICKLY INTO THE AFTERNOON...LESS THAN 7KT BY 00Z AS
SURFACE RIDGE OF HIGH PRESSURE MOVES IN. MAY STILL BE DEALING WITH
PATCHY BLSN AT KRST THROUGH 14Z BEFORE WINDS SUBSIDE.

SHORT/LONG TERM...DAS
AVIATION..........BINAU

&&

.ARX WATCHES/WARNINGS/ADVISORIES...
WI...WIND CHILL WARNING UNTIL NOON CST TODAY FOR WIZ017-WIZ029-WIZ032-
     WIZ033-WIZ034-WIZ041-WIZ042-WIZ043-WIZ044-WIZ053-WIZ054-
     WIZ055-WIZ061.

     WIND CHILL ADVISORY UNTIL 3 PM CST THIS AFTERNOON FOR WIZ034-
     WIZ042-WIZ043-WIZ044.

     WIND CHILL ADVISORY UNTIL 6 PM CST THIS AFTERNOON FOR WIZ017-
     WIZ029.

MN...WIND CHILL WARNING UNTIL NOON CST TODAY FOR MNZ079-MNZ086-MNZ087-
     MNZ088-MNZ094-MNZ095-MNZ096.

IA...WIND CHILL WARNING UNTIL NOON CST TODAY FOR IAZ008-IAZ009-IAZ010-
     IAZ011-IAZ018-IAZ019-IAZ029-IAZ030.

&&

04

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LA CROSSE WI
447 AM CST WED JAN 30 2008

MNZ079-086>088-094>096-WIZ017-029-032>034-041>044-053-311100-
ADAMS-BUFFALO-CLARK-DODGE-FILLMORE-HOUSTON-JACKSON-JUNEAU-LA CROSSE-
MONROE-MOWER-OLMSTED-TAYLOR-TREMPEALEAU-VERNON-WABASHA-WINONA-
447 AM CST WED JAN 30 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF SOUTHEAST MINNESOTA...
AND SOUTHWEST INTO CENTRAL WISCONSIN.

.DAY ONE...TODAY AND TONIGHT

BITTERLY COLD WIND CHILLS OF 30 BELOW TO 40 BELOW ZERO ARE EXPECTED
THROUGH MID MORNING BEFORE RAPID IMPROVEMENT OCCURS VIA DECREASING
WINDS...WARMING AIR TEMPERATURES...AND AMPLE SUNSHINE. WIND CHILLS
THIS COLD WILL BE CAPABLE OF PRODUCING FROST BITE IN AS LITTLE AS 10
MINUTES. A WIND CHILL WARNING REMAINS IN EFFECT THROUGH NOON TODAY.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
THERE WILL BE A FEW CHANCES FOR LIGHT SNOW...COMING THURSDAY AND
AGAIN ON SATURDAY...THOUGH ANY ACCUMULATIONS...IF THEY WERE TO
OCCUR...WOULD BE LIGHT. A BETTER CHANCE OF ACCUMULATING SNOW WILL
COME EARLY NEXT WEEK AS A LARGE STORM SYSTEM MOVES THROUGH THE
CENTRAL PORTION OF THE COUNTY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

.EMERGENCY MANAGEMENT COORDINATION...

NO CALL IS SCHEDULED.

IAZ008>011-018-019-029-030-WIZ054-055-061-311100-
ALLAMAKEE-CHICKASAW-CLAYTON-CRAWFORD-FAYETTE-FLOYD-GRANT-HOWARD-
MITCHELL-RICHLAND-WINNESHIEK-
447 AM CST WED JAN 30 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF NORTHEAST IOWA...
AND EXTREME SOUTHWEST WISCONSIN.

.DAY ONE...TODAY AND TONIGHT

BITTERLY COLD WIND CHILLS OF 30 BELOW TO 40 BELOW ZERO ARE EXPECTED
THROUGH MID MORNING BEFORE RAPID IMPROVEMENT OCCURS VIA DECREASING
WINDS...WARMING AIR TEMPERATURES...AND AMPLE SUNSHINE. WIND CHILLS
THIS COLD WILL BE CAPABLE OF PRODUCING FROST BITE IN AS LITTLE AS 10
MINUTES. A WIND CHILL WARNING REMAINS IN EFFECT THROUGH NOON TODAY.

LIGHT SNOW WILL SPREAD INTO THE AREA LATER TONIGHT. ACCUMULATIONS
UP TO AN INCH CAN BE EXPECTED.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
LIGHT SNOW WILL CONTINUE ACROSS THE AREA INTO THURSDAY BEFORE
EXITING THE AREA THURSDAY NIGHT. AN ADDITIONAL INCH OR TWO OF SNOW
WILL BE POSSIBLE. ANOTHER LIGHT SNOW CHANCE WILL COME ON SATURDAY...
BUT SIGNIFICANT ACCUMULATIONS ARE NOT EXPECTED. A BETTER CHANCE OF
ACCUMULATING SNOW WILL COME EARLY NEXT WEEK AS A LARGE STORM SYSTEM
MOVES THROUGH THE CENTRAL PORTION OF THE COUNTY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

.EMERGENCY MANAGEMENT COORDINATION...

NO CALL IS SCHEDULED.

BINAU