WINTER STORM WATCH
Issue Date: 202 PM CST MON DEC 21 2009
Expiration: 600 PM CST FRI DEC 25 2009

.A MAJOR WINTER STORM IS POSSIBLE ACROSS THE REGION WEDNESDAY INTO
FRIDAY AS STRONG LOW PRESSURE DEVELOPS ACROSS THE SOUTHERN PLAINS
ON WEDNESDAY AND MOVES NORTH INTO IOWA BY FRIDAY MORNING. SNOW WILL
BECOME WIDESPREAD ON WEDNESDAY...TAPER OFF WEDNESDAY AND THEN
BECOME WIDESPREAD THURSDAY AND THURSDAY NIGHT. HEAVY SNOW IN
EXCESS OF 10 INCHES WILL BE POSSIBLE WITH THIS STORM. STRONG NORTH
WINDS WILL DEVELOP ON THURSDAY AND CREATE WIDESPREAD BLOWING SNOW
THURSDAY INTO FRIDAY.
IAZ001>003-012>014-020>022-031-032-MNZ089-090-098-NEZ013-014-
SDZ050-057>071-220415-
/O.NEW.KFSD.WS.A.0007.091223T1800Z-091226T0000Z/
LYON-OSCEOLA-DICKINSON-SIOUX-OBRIEN-CLAY-PLYMOUTH-CHEROKEE-
BUENA VISTA-WOODBURY-IDA-NOBLES-JACKSON-ROCK-DIXON-DAKOTA-GREGORY-
BRULE-AURORA-DAVISON-HANSON-MCCOOK-MINNEHAHA-CHARLES MIX-DOUGLAS-
HUTCHINSON-TURNER-LINCOLN-BON HOMME-YANKTON-UNION-
INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD...
LARCHWOOD...SIBLEY...SPIRIT LAKE...MILFORD...ARNOLDS PARK...
ORANGE CITY...SIOUX CENTER...SHELDON...HARTLEY...SANBORN...
SPENCER...LE MARS...CHEROKEE...STORM LAKE...SIOUX CITY...
IDA GROVE...HOLSTEIN...BATTLE CREEK...WORTHINGTON...JACKSON...
LAKEFIELD...LUVERNE...WAKEFIELD...PONCA...ALLEN...
SOUTH SIOUX CITY...GREGORY...BURKE...CHAMBERLAIN...KIMBALL...
PLANKINTON...WHITE LAKE...STICKNEY...MITCHELL...ALEXANDRIA...
EMERY...SALEM...CANISTOTA...BRIDGEWATER...MONTROSE...
SIOUX FALLS...WAGNER...PLATTE...LAKE ANDES...MARTY...ARMOUR...
CORSICA...DELMONT...PARKSTON...FREEMAN...MENNO...TRIPP...PARKER...
CENTERVILLE...MARION...VIBORG...HURLEY...CHANCELLOR...CANTON...
LENNOX...TEA...HARRISBURG...TYNDALL...SCOTLAND...SPRINGFIELD...
AVON...TABOR...YANKTON...VERMILLION...NORTH SIOUX CITY...
BERESFORD...ELK POINT...ALCESTER...JEFFERSON
202 PM CST MON DEC 21 2009
...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
FRIDAY AFTERNOON...
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
FRIDAY AFTERNOON.
* TIMING...SNOW WILL SPREAD NORTH ACROSS THE AREA ON
WEDNESDAY...TAPER OFF WEDNESDAY NIGHT...AND BECOME WIDESPREAD
AGAIN THURSDAY AND THURSDAY NIGHT.
* ACCUMULATIONS...SNOWFALL TOTALS OF 10 TO 20 INCHES WILL BE
POSSIBLE WITH THIS STORM WITH THE HEAVIEST AMOUNTS LIKELY ACROSS
NORTHWEST IOWA.
* WIND AND VISIBILITY...NORTHEAST WINDS OF 10 TO 20 MPH CAN BE
EXPECTED WEDNESDAY AND WEDNESDAY AND INCREASE TO 25 TO 35 MPH
OUT OF THE NORTH THURSDAY THROUGH FRIDAY. THE WIND COMBINED WITH
THE SNOW MAY REDUCE VISIBILITIES TO NEAR ZERO AT TIMES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.
$$

HAZARDOUS WEATHER OUTLOOK
Issue Date: 635 AM CST MON DEC 21 2009
Expiration: 600 AM CST TUE DEC 22 2009

Expires:200912221200;;
FLUS43 KFSD 211232
HWOFSD
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
0632 AM CST MON DEC 21 2009
SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-
IAZ001>003-012>014-020>022-031-032-NEZ013-014-221200-
AURORA-BEADLE-BON HOMME-BROOKINGS-BRULE-BUENA VISTA IA-
CHARLES MIX-CHEROKEE IA-CLAY-CLAY IA-COTTONWOOD MN-DAKOTA NE-
DAVISON-DICKINSON IA-DIXON NE-DOUGLAS-GREGORY-HANSON-HUTCHINSON-
IDA IA-JACKSON MN-JERAULD-KINGSBURY-LAKE-LINCOLN-LINCOLN MN-
LYON IA-LYON MN-MCCOOK-MINER-MINNEHAHA-MOODY-MURRAY MN-NOBLES MN-
OBRIEN IA-OSCEOLA IA-PIPESTONE MN-PLYMOUTH IA-ROCK MN-SANBORN-
SIOUX IA-TURNER-UNION-WOODBURY IA-YANKTON-
0632 AM CST MON DEC 21 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA...
SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA.
.DAY ONE...TODAY AND TONIGHT
WINTER WEATHER...
A BAND OF SNOW SHOULD DEVELOP THIS AFTERNOON AND EVENING...MAINLY
NORTH OF INTERSTATE 90 IN SOUTH DAKOTA...TO SOUTHWEST
MINNESOTA...AND FAR NORTHERN PARTS OF NORTHWEST IOWA. GENERALLY 1
TO 3 INCHES SNOWFALL IS EXPECTED...BUT LOCAL AMOUNTS UP TO 4
INCHES IS POSSIBLE ON A LINE FROM NEAR BROOKINGS SOUTH DAKOTA TO
JACKSON MINNESOTA...INCLUDING LOCATIONS NEAR THE BUFFALO RIDGE.
ALSO PATCHY LIGHT FREEZING RAIN OR FREEZING DRIZZLE IS POSSIBLE
ALONG THE MISSOURI VALLEY TO SOUTHERN PARTS OF NORTHWEST IOWA
FROM LATER THIS AFTERNOON INTO TONIGHT.
WIND AND FOG...
WIDESPREAD FOG...DENSE IN PLACES WITH VISIBILITIES AT OR BELOW A
QUARTER MILE...WILL GRADUALLY LIFT BY LATE MORNING.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
AREAS OF FREEZING DRIZZLE SHOULD DEVELOP OVER THE AREA TUESDAY
AND TUESDAY NIGHT...AS MILD AIR ALOFT OVERRUNS COLD MOIST AIR
NEAR THE SURFACE. THEN SNOW SHOULD SPREAD NORTH OVER THE AREA
THROUGH WEDNESDAY...AS A MAJOR WINTER STORM SYSTEM DEVELOPS IN
THE PLAINS.
THERE IS THE POTENTIAL FOR A SIGNIFICANT WINTER STORM TO AFFECT A
GOOD PART OF THE AREA FROM WEDNESDAY THROUGH FRIDAY. AT THIS TIME
THE BEST POTENTIAL FOR HEAVY SNOW IS SOUTHEAST OF A LINE FROM
BROOKINGS TO SPRINGFIELD SOUTH DAKOTA...BUT THIS COULD SHIFT
NORTHWEST WITH LATER FORECASTS. IN ADDITION TO THE HEAVY
SNOW...STRONG WINDS LOOK TO CREATE AREAS OF BLOWING AND DRIFTING
SNOW MAKING TRAVEL TREACHEROUS. THE PRECISE TRACK OF THIS SYSTEM
IS UNCERTAIN AT THIS POINT...BUT THOSE WITH TRAVEL PLANS SHOULD
STAY TUNED TO THE LATEST INFORMATION REGARDING THIS MAJOR WINTER
STORM.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.
&&
FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.WEATHER.GOV/SIOUXFALLS. THIS INCLUDES THE GRAPHICAL HAZARDOUS
WEATHER OUTLOOK.
$$