WINTER STORM WARNING
Issue Date: 227 PM CST TUE DEC 22 2009
Expiration: 600 PM CST FRI DEC 25 2009

...HOLIDAY TRAVEL TO BE SEVERELY IMPACTED BY SIGNIFICANT WINTER
STORM BEGINNING WEDNESDAY...
.A ONCE IN A QUARTER CENTURY STORM WILL MOVE ONTO THE PLAINS
WEDNESDAY AND WRAP UP AND INTENSIFY INTO THURSDAY. A LARGE AREA OF
MAINLY SNOW...HEAVY AT TIMES...WILL LIFT NORTH INTO THE TRI STATE
AREA WEDNESDAY AFTERNOON INTO WEDNESDAY EVENING. BY THURSDAY
MORNING THE WIND WILL BECOME MORE NORTHERLY AND INCREASE WITH
GUSTS OF 30 TO 40 MPH LIKELY. WITH A WIDESPREAD 10 TO 20 INCHES OF
SNOW...SIGNIFICANT BLOWING AND DRIFTING WILL OCCUR ON THURSDAY
INTO FRIDAY.
PARTS OF NORTHWEST IOWA...MAINLY SOUTH OF A ELK POINT TO SPENCER
IOWA LINE...WILL SEE FREEZING RAIN DEVELOP DURING THIS TIME...THEN
CONTINUE INTO THURSDAY MORNING. AROUND A THIRD OF AN INCH OF ICE
WILL BE POSSIBLE DURING THIS TIME WHICH WILL CREATE VERY SLICK
CONDITIONS. THE SNOW WILL THEN BECOME HEAVY ON THURSDAY AFTERNOON
AND NIGHT WITH AROUND A FOOT OF SNOW POSSIBLE ON TOP OF THE ICE.
THIS IS A LIFE THREATENING SYSTEM AND ANY TRAVEL FROM WEDNESDAY
NIGHT INTO FRIDAY WILL BE TREACHEROUS.
IAZ001>003-012>014-020>022-031-032-MNZ089-090-098-NEZ013-014-
SDZ071-230430-
/O.UPG.KFSD.WS.A.0007.091223T1800Z-091226T0000Z/
/O.EXB.KFSD.WS.W.0008.091223T2100Z-091226T0000Z/
LYON-OSCEOLA-DICKINSON-SIOUX-OBRIEN-CLAY-PLYMOUTH-CHEROKEE-
BUENA VISTA-WOODBURY-IDA-NOBLES-JACKSON-ROCK-DIXON-DAKOTA-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...NORTH SIOUX CITY...BERESFORD...ELK POINT...
ALCESTER...JEFFERSON
227 PM CST TUE DEC 22 2009
...WINTER STORM WARNING IN EFFECT FROM 3 PM WEDNESDAY TO 6 PM CST
FRIDAY...
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WINTER
STORM WARNING FOR FREEZING RAIN...HEAVY SNOW AND BLOWING
SNOW...WHICH IS IN EFFECT FROM 3 PM WEDNESDAY TO 6 PM CST FRIDAY.
THE WINTER STORM WATCH IS NO LONGER IN EFFECT.
* TIMING...SNOW WILL SPREAD NORTH ACROSS THE AREA ON WEDNESDAY.
THE SNOW WILL CHANGE TO OR BECOME MIXED WITH FREEZING RAIN
LATER WEDNESDAY THROUGH THURSDAY SOUTH OF AN ELK POINT TO
JACKSON MINNESOTA LINE. SNOW SHOULD BECOME WIDESPREAD AGAIN
THURSDAY NIGHT INTO EARLY FRIDAY.
* ACCUMULATIONS...SNOWFALL TOTALS OF 10 TO 15 INCHES WILL BE
POSSIBLE WITH THIS STORM WITH THE HEAVIEST AMOUNTS LIKELY TOWARD
THE SOUTH DAKOTA BORDER. ICE ACCUMULATIONS MAY REACH A QUARTER
TO A THIRD OF AN INCH FOR MUCH OF NORTHWEST IOWA SOUTHEAST OF A
LINE FROM ELK POINT TO JACKSON MINNESOTA WEDNESDAY AFTERNOON
THROUGH THURSDAY.
* WIND AND VISIBILITY...EAST WINDS OF 10 TO 20 MPH CAN BE EXPECTED
WEDNESDAY...INCREASING GRADUALLY WEDNESDAY NIGHT AND THURSDAY.
WINDS WILL BECOME NORTH 25 TO 35 MPH FOR THURSDAY NIGHT AND
FRIDAY. THE WINDS COMBINED WITH THE SNOWFALL MAY REDUCE
VISIBILITIES TO NEAR ZERO AT TIMES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN
EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA
FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN
EMERGENCY.
A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW AND ICE
ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS
WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.
$$

HAZARDOUS WEATHER OUTLOOK
Issue Date: 943 AM CST TUE DEC 22 2009
Expiration: 600 AM CST WED DEC 23 2009

Expires:200912231200;;
FLUS43 KFSD 221543
HWOFSD
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
0943 AM CST TUE DEC 22 2009
SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-
IAZ001>003-012>014-020>022-031-032-NEZ013-014-231200-
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-
0943 AM CST TUE DEC 22 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA...
SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA.
.DAY ONE...TODAY AND TONIGHT
WINTER WEATHER...
AREAS OF LIGHT FREEZING DRIZZLE AND A FEW FLURRIES MAY MAKE FOR
SOME SLIPPERY TRAVEL TODAY AND TONIGHT.
WIND AND FOG...
DENSE FOG WITH VISIBILITIES A QUARTER MILE OR LESS WILL CONTINUE
OVER PART OF NORTHWEST IOWA THIS MORNING...FROM IDA GROVE TO
STORM LAKE. VISIBILITIES ARE EXPECTED TO IMPROVE TO AROUND A MILE
EARLY THIS AFTERNOON.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
A MAJOR WINTER STORM WILL MOVE SLOWLY THROUGH THE AREA FROM
WEDNESDAY AFTERNOON THROUGH FRIDAY. IT APPEARS THE HEAVIEST
SNOWFALL OF 13 TO 17 INCHES SHOULD BE WEST OF INTERSTATE
29...WITH GRADUALLY LESSER AMOUNTS EXPECTED EAST OF INTERSTATE
29...BUT STILL APPROACHING A FOOT IN MANY AREAS. THE STRONG LOW
PRESSURE SYSTEM MOVING NORTHWARD FROM MISSOURI TO IOWA THROUGH
THURSDAY WILL BRING SOME MILDER AIR ALOFT INTO NORTHWEST
IOWA...WHERE PRECIPITATION SHOULD BE A MIX OF SNOW...
FREEZING RAIN...AND SLEET FROM WEDNESDAY INTO THURSDAY...BEFORE
CHANGING TO ALL SNOW BY LATE THURSDAY. STRONG NORTHERLY WINDS
WILL KICK IN ON THE BACKSIDE OF THE LOW PRESSURE THURSDAY
AFTERNOON AND EVENING...CAUSING WIDESPREAD BLOWING SNOW...IF NOT
BLIZZARD CONDITIONS...TO DEVELOP. THE SNOW AND BLOWING SNOW
SHOULD GRADUALLY TAPER OFF FROM WEST TO EAST OVER THE AREA FRIDAY
NIGHT INTO SATURDAY MORNING.
.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.
$$

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.
$$