HAZARDOUS WEATHER OUTLOOK
Issue Date: 655 AM CST FRI DEC 25 2009
Expiration: 600 AM CST SAT DEC 26 2009

Expires:200912261200;;
FLUS43 KFSD 251255
HWOFSD
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
0651 AM CST FRI DEC 25 2009
SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-
IAZ001>003-012>014-020>022-031-032-NEZ013-014-261200-
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-
0651 AM CST FRI DEC 25 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA...
SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA.
.DAY ONE...TODAY AND TONIGHT
WINTER WEATHER...
WIDESPREAD BLIZZARD CONDITIONS...ESPECIALLY IN OPEN AREAS...WILL
PERSIST INTO TONIGHT MAINLY ALONG AND WEST OF THE INTERSTATE 29
CORRIDOR. SOMEWHAT LESSER WINDS WILL BE FOUND TO THE EAST...BUT
WIDESPREAD BLOWING AND DRIFTING SNOW WILL STILL BE PRESENT.
ADDITIONAL SNOWFALL THROUGH TONIGHT WILL MAINLY RANGE FROM 6 TO
10 INCHES...WITH SOME ADDED LIGHT AMOUNTS ON SATURDAY. WITH THE
STRONG WINDS AND SNOWFALL...DRIFTS IN RURAL AREAS IN EXCESS OF
6 FEET ARE EXPECTED. WIND CHILLS FROM 5 BELOW TO 20 BELOW ZERO
THIS MORNING WILL ADD TO THE LIFE THREATENING SITUATION SHOULD
YOU BECOME STRANDED.
.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
THE MAJOR WINTER STORM WILL CONTINUE TO AFFECT THE AREA CHRISTMAS
DAY THROUGH A GOOD PORTION OF SATURDAY...DUE TO A VERY SLOW
MOVEMENT...BRINGING BLIZZARD TO NEAR BLIZZARD CONDITIONS...AND A
STORM TOTAL SNOWFALL IN EXCESS OF A FOOT MOST AREAS. A MAXIMUM OF
16 TO 19 INCHES IS EXPECTED FROM EAST CENTRAL SOUTH DAKOTA INTO
SOUTHWEST MINNESOTA. SUCH LARGE AMOUNTS OF SNOWFALL AND STRONG
NORTHERLY WINDS WILL BE FAVORABLE TO PRODUCE EXTREME DRIFTING
SNOW...WITH POTENTIAL FOR DRIFTS IN EXCESS OF 10 FEET TO CREATE
IMPASSABLE ROADWAYS. THE SNOW AND BLOWING SNOW SHOULD GRADUALLY
TAPER OFF FROM WEST TO EAST OVER THE AREA ON SATURDAY.
.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.
$$

BLIZZARD WARNING
Issue Date: 331 PM CST THU DEC 24 2009
Expiration: 1200 PM CST SAT DEC 26 2009

...CONDITIONS WORSENING RAPIDLY AGAIN TONIGHT WITH SEVERE
CHRISTMAS WINTER STORM...
.THIS IS A DANGEROUS WINTER STORM AND ANY TRAVEL TONIGHT THROUGH
SATURDAY WILL BE VERY DIFFICULT...IF NOT IMPOSSIBLE IN MANY
AREAS. DO NOT BE LULLED INTO COMPLACENCY BY THE LULL THAT EXISTED
FOR MUCH OF TODAY. LOW PRESSURE TRACKING NORTH UP THE MISSISSIPPI
VALLEY WILL BRING THE MAIN PART OF THE STORM QUICKLY INTO THE AREA
THIS EVENING. SNOW...HEAVY AT TIMES...WILL BE ACCOMPANIED BY
INCREASING WINDS. TOTAL SNOW ACCUMULATIONS OF MORE THEN A FOOT ARE
STILL EXPECTED EAST OF THE JAMES RIVER...WITH 6 INCHES TO A FOOT
ALONG AND WEST OF THE JAMES RIVER. TOTAL ACCUMULATIONS OVER 16
INCHES ARE EXPECTED IN PARTS O NORTHWEST IOWA AND SOUTHWEST
MINNESOTA. NORTHERLY WINDS OF 25 TO 40 MPH WILL ACCOMPANY THE
FALLING SNOW...GREATLY REDUCING VISIBILITIES AND CAUSING BLIZZARD
OR NEAR BLIZZARD CONDITIONS.
NEZ013-014-SDZ038>040-050-052>071-250545-
/O.NEW.KFSD.BZ.W.0005.091225T0600Z-091226T1800Z/
/O.EXT.KFSD.WS.W.0008.000000T0000Z-091225T0600Z/
DIXON-DAKOTA-BEADLE-KINGSBURY-BROOKINGS-GREGORY-JERAULD-SANBORN-
MINER-LAKE-MOODY-BRULE-AURORA-DAVISON-HANSON-MCCOOK-MINNEHAHA-
CHARLES MIX-DOUGLAS-HUTCHINSON-TURNER-LINCOLN-BON HOMME-YANKTON-
CLAY-UNION-
INCLUDING THE CITIES OF...WAKEFIELD...PONCA...ALLEN...
SOUTH SIOUX CITY...HURON...DE SMET...ARLINGTON...LAKE PRESTON...
BROOKINGS...GREGORY...BURKE...WESSINGTON SPRINGS...ALPENA...
WOONSOCKET...HOWARD...MADISON...FLANDREAU...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
331 PM CST THU DEC 24 2009
...WINTER STORM WARNING NOW IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...
...BLIZZARD WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO NOON CST
SATURDAY...
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO NOON CST
SATURDAY. THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL
MIDNIGHT CST TONIGHT.
* TIMING...SNOW WILL INCREASE STEADILY FROM THE SOUTH THIS EVENING
AFTER A RELATIVE QUIET PERIOD OF DAYTIME WEATHER. WINDS WILL
INCREASE TO 25 TO 40 MPH BY LATE TONIGHT WITH GUSTS TO 45 MPH
LIKELY. WIDESPREAD SNOW AND BLOWING SNOW WILL DEVELOP TONIGHT
WITH ZERO VISIBILITIES IN BLIZZARD CONDITIONS AFTER MIDNIGHT.
THE BLIZZARD CONDITIONS WILL CONTINUE FRIDAY INTO SATURDAY EVEN
THOUGH SNOWFALL INTENSITY WILL BEGIN TO SLOWLY DECREASE FRIDAY
NIGHT.
* ACCUMULATIONS...STORM TOTALS WILL RANGE FROM A LITTLE OVER 12
INCHES NEAR THE EASTERN BORDER OF SOUTH DAKOTA AND IN EXTREME
NORTHEAST NEBRASKA...TO AROUND 7 INCHES FROM CHAMBERLAIN TO
GREGORY SOUTH DAKOTA...WITH HIGHER DRIFTS.
* WIND AND VISIBILITY...NORTH TO NORTHWEST WINDS WILL CONTINUE TO
INCREASE TONIGHT...REACHING SPEEDS OF 25 TO 40 MPH...WITH THESE
WINDS CONTINUING INTO SATURDAY. THIS WILL CREATE WIDESPREAD
VISIBILITIES OF NEAR ZERO LATE TONIGHT THROUGH SATURDAY
MORNING.
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 IF NOT
IMPOSSIBLE AT TIMES. 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 BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.
$$

WINTER STORM WARNING
Issue Date: 400 AM CST THU DEC 24 2009
Expiration: 1200 PM CST SAT DEC 26 2009

...CHRISTMAS TRAVEL WILL BE SEVERELY IMPACTED BY A SIGNIFICANT
WINTER STORM...
.THIS IS A LIFE THREATENING SYSTEM AND ANY TRAVEL FROM TONIGHT
THROUGH SATURDAY WILL BE TREACHEROUS...IF NOT NEARLY IMPOSSIBLE IN
MANY AREAS. THIS IS A PROLONGED WINTER WEATHER EVENT. AFTER A
RELATIVE LULL TODAY...THE STORM WILL REALLY BEGIN TO ORGANIZE
TONIGHT...WITH SURFACE LOW PRESSURE TRACKING NORTHWARD UP THE
MISSISSIPPI VALLEY. THE LOW WILL THEN MEANDER AROUND IOWA FRIDAY
AND FRIDAY NIGHT...BEFORE MOVING SLIGHTLY EASTWARD ON SATURDAY.
NORTH TO NORTHWEST WINDS WILL STEADILY INCREASE TODAY...TOPPING
OUT ON CHRISTMAS DAY AVERAGING 25 TO 40 MPH. WIDESPREAD SNOW
ACCUMULATIONS OF MORE THEN A FOOT WILL OCCUR BY SATURDAY
AFTERNOON. COUPLED WITH THE WIND...5 TO 10 FOOT DRIFTS ARE NOT OUT
OF THE QUESTION IN RURAL AREAS.
ALSO...A LAYER OF ICE EXISTS UNDER THE FRESH BED OF SNOW. THIS
WILL CREATE SLIPPERY CONDITIONS...ESPECIALLY ON UNTREATED
SURFACES.
STAY ALERT FOR FUTURE STATEMENTS WHICH MAY HAVE TO BE UPGRADED
FURTHER TO INCLUDE BLIZZARD CONDITIONS.
IAZ001>003-012>014-020>022-031-032-MNZ089-090-098-NEZ013-014-
SDZ050-057>071-241800-
/O.EXT.KFSD.WS.W.0008.000000T0000Z-091226T1800Z/
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
400 AM CST THU DEC 24 2009
...WINTER STORM WARNING NOW IN EFFECT UNTIL NOON CST SATURDAY...
THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL NOON CST
SATURDAY.
* TIMING...A RELATIVE QUIET TIME WILL BE IN STORE TODAY...WITH
PERIODS OF LIGHT SNOW GIVING MINOR SNOW ACCUMULATIONS. THERE
WILL EVEN BE A WINTRY MIX OF LIGHT FREEZING DRIZZLE AND SLEET
POSSIBLE THIS MORNING...GENERALLY ALONG AND EAST OF INTERSTATE
29. BUT AS THE BULK OF THE STORM ORGANIZES...WIDESPREAD SNOW AND
BLOWING SNOW WILL BEGIN TONIGHT...LASTING THROUGH SATURDAY. THE
SNOWFALL WILL BE HEAVY AT TIMES.
* ACCUMULATIONS...STORM TOTALS OF 12 TO 18 INCHES OF SNOW WILL BE
COMMON BY SATURDAY. 5 TO 10 FOOT DRIFTS ARE POSSIBLE IN RURAL AREAS.
* WIND AND VISIBILITY...NORTH TO NORTHWEST WINDS WILL STEADILY
INCREASE TODAY...TOPPING OUT ON CHRISTMAS DAY AND FRIDAY NIGHT
AT 25 TO 40 MPH. THIS WILL CREATE VISIBILITIES OF ZERO AT TIMES
IN RURAL AREAS TONIGHT THROUGH SATURDAY MORNING.
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...IF NOT IMPOSSIBLE
AT TIMES. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP
AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF
AN EMERGENCY.
$$