WINTER STORM WARNING
Issue Date: 259 PM CST MON DEC 07 2009
Expiration: 600 AM CST WED DEC 09 2009

.A STRONG WINTER STORM SYSTEM WILL MOVE THROUGH THE CENTRAL
PLAINS ON TUESDAY...AND INTO MISSOURI AND CENTRAL ILLINOIS
TUESDAY NIGHT. THIS STORM WILL GIVE NORTHWEST IOWA AND IMMEDIATE
ADJACENT AREAS WIDESPREAD MODERATE TO HEAVY SNOWFALL TUESDAY AND
TUESDAY EVENING. LIGHTER ACCUMULATIONS WILL BE FOUND FARTHER TO THE
WEST AND NORTH...INTO SOUTHWEST MINNESOTA...SOUTHEAST AND SOUTH
CENTRAL SOUTH DAKOTA...WITH STILL LIGHTER AMOUNTS IN EAST CENTRAL
SOUTH DAKOTA. VERY STRONG WINDS WILL DEVELOP BEHIND THE LOW PRESSURE
AREA LATE TUESDAY AND TUESDAY NIGHT...PRODUCING WIDESPREAD BLOWING AND
DRIFTING SNOW. MUCH BELOW NORMAL TEMPERATURES WILL ALSO COMBINE WITH
THE STRONG WINDS TO PRODUCE VERY COLD WIND CHILL READINGS TUESDAY
AFTERNOON THROUGH WEDNESDAY.
IAZ003-012>014-020>022-031-032-NEZ013-014-SDZ070-071-080500-
/O.UPG.KFSD.WS.A.0006.091208T1200Z-091209T1200Z/
/O.NEW.KFSD.WS.W.0007.091208T1200Z-091209T1200Z/
DICKINSON-SIOUX-OBRIEN-CLAY-PLYMOUTH-CHEROKEE-BUENA VISTA-
WOODBURY-IDA-DIXON-DAKOTA-UNION-
INCLUDING THE CITIES OF...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...WAKEFIELD...PONCA...ALLEN...
SOUTH SIOUX CITY...VERMILLION...NORTH SIOUX CITY...BERESFORD...
ELK POINT...ALCESTER...JEFFERSON
259 PM CST MON DEC 7 2009
...WINTER STORM WARNING IN EFFECT FROM 6 AM TUESDAY TO 6 AM CST
WEDNESDAY...
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM 6 AM TUESDAY TO 6 AM CST WEDNESDAY. THE WINTER STORM WATCH IS NO
LONGER IN EFFECT.
ACCUMULATING SNOWFALL WILL SPREAD INTO THE AREA LATE TONIGHT...THEN
CONTINUE THROUGH TUESDAY NIGHT. THE HEAVIEST SNOWFALL IS EXPECTED
TUESDAY AFTERNOON AND EVENING...WITH ACCUMULATING SNOWFALL TAPERING
OFF AFTER MIDNIGHT TUESDAY NIGHT. TOTAL SNOWFALL ACCUMULATIONS OF 6
TO 10 INCHES ARE EXPECTED...WITH THE HEAVIEST AMOUNTS ACROSS THE
SIOUX CITY TO STORM LAKE AREAS.
STRONG NORTHERLY WINDS OF 25 TO 35 MPH CAN ALSO BE EXPECTED TUESDAY
NIGHT...WHICH WILL PRODUCE WIDESPREAD BLOWING AND DRIFTING SNOW...
ALONG WITH WIND CHILL VALUES OF 5 TO 15 DEGREES BELOW ZERO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING 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.
$$

HAZARDOUS WEATHER OUTLOOK
Issue Date: 459 AM CST MON DEC 07 2009
Expiration: 600 AM CST TUE DEC 08 2009

Expires:200912081200;;
FLUS43 KFSD 071055
HWOFSD
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
0422 AM CST MON DEC 07 2009
SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-
IAZ001>003-012>014-020>022-031-032-NEZ013-014-081200-
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-
0422 AM CST MON DEC 07 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA...
SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA.
.DAY ONE...TODAY AND TONIGHT
WINTER WEATHER...
LIGHT SNOW WILL DEVELOP MAINLY ALONG AND SOUTH OF MISSOURI RIVER
LATE TONIGHT. SNOW ACCUMULATIONS BY TUESDAY MORNING ACROSS THAT
AREA WILL BE AN INCH OR LESS.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
WEATHER CONDITIONS WILL DETERIORATE ON TUESDAY AS SNOW BECOMES
WIDESPREAD ACROSS MOST OF THE REGION...AS LOW PRESSURE
INTENSIFIES ACROSS THE CENTRAL PLAINS AND MOVES NORTHEAST TUESDAY
NIGHT. NORTHEAST WINDS WILL INCREASE ACROSS THE REGION TUESDAY
AFTERNOON AND BECOME STRONG OUT OF THE NORTH TUESDAY NIGHT AND
WILL CREATE WIDESPREAD BLOWING SNOW...ESPECIALLY EAST OF A
TYNDALL TO BROOKINGS LINE. THE HEAVIEST SNOW IS EXPECTED ACROSS
NORTHWEST IOWA TUESDAY INTO TUESDAY NIGHT WHERE 4 TO 8 INCHES OF
SNOW WILL FALL. FURTHER NORTHWEST...ALONG A YANKTON TO SIOUX
FALLS TO MARSHALL MINNESOTA LINE...2 TO 4 INCHES OF SNOW IS
EXPECTED WITH THE BULK OF THE SNOW FALLING TUESDAY AFTERNOON AND
NIGHT. FURTHER WEST...ONLY AN INCH OR TWO OF SNOW IS EXPECTED. IN
ADDITION TO THE SNOW...BITTERLY COLD WIND CHILLS OF 5 BELOW TO 20
BELOW WILL OCCUR TUESDAY NIGHT INTO WEDNESDAY 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: 854 PM CST SUN DEC 06 2009
Expiration: 600 AM CST WED DEC 09 2009

.A WEAKENING AREA OF SNOWFALL WILL SHIFT EASTWARD ACROSS THE AREA
TONIGHT. LIGHT SNOW WILL BE POSSIBLE OVER MUCH OF NORTHEAST
NEBRASKA...SOUTHEAST SOUTH DAKOTA AND NORTHWEST IOWA...BUT AMOUNTS
SHOULD BE MAINLY LIGHT. AN INCH OR TWO OF ACCUMULATION IS STILL
POSSIBLE FROM SIOUX CITY TO IDA GROVE...WITH DECREASING AMOUNTS
TO THE NORTH. A MUCH MORE POTENT SYSTEM WILL DIVE INTO NEBRASKA ON
TUESDAY...WITH THE EFFECTS CONTINUING INTO WEDNESDAY. HEAVY SNOW
WILL BE POSSIBLE...ESPECIALLY TUESDAY NIGHT AND ESPECIALLY ACROSS
NORTHWEST IOWA. VERY STRONG WINDS WILL DEVELOP AS THE SYSTEM EXITS
WHICH WOULD ALSO PRODUCE WIDESPREAD BLOWING AND DRIFTING SNOW.
IAZ031-032-071100-
/O.CAN.KFSD.WW.Y.0021.000000T0000Z-091207T0800Z/
/O.CON.KFSD.WS.A.0006.091208T1200Z-091209T1200Z/
WOODBURY-IDA-
INCLUDING THE CITIES OF...SIOUX CITY...IDA GROVE...HOLSTEIN...
BATTLE CREEK
854 PM CST SUN DEC 6 2009
...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY MORNING
THROUGH LATE TUESDAY NIGHT...
...WINTER WEATHER ADVISORY IS CANCELLED...
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS CANCELLED THE
WINTER WEATHER ADVISORY. A WINTER STORM WATCH REMAINS IN EFFECT
FROM TUESDAY MORNING THROUGH LATE TUESDAY NIGHT.
WHILE THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT FOR
TONIGHT...ONE TO TWO INCHES OF ACCUMULATION WILL STILL BE POSSIBLE
BY SUNRISE.
A MORE POWERFUL STORM SYSTEM WILL IMPACT MUCH OF THE AREA TUESDAY
AND TUESDAY NIGHT. SNOW IS EXPECTED TO DEVELOP AHEAD OF AN AREA OF
LOW PRESSURE LATE MONDAY NIGHT INTO TUESDAY MORNING...WITH SNOW
CONTINUING INTO TUESDAY NIGHT. HEAVY SNOW ACCUMULATIONS ARE
EXPECTED ACROSS THE WATCH AREA. AT THIS TIME...6 TO 10 INCHES OF
SNOW IS EXPECTED ALONG AND NEAR HIGHWAY 20...WHILE 4 TO 8 INCHES
WILL BE POSSIBLE NEAR A LINE FROM SPENCER IOWA TO YANKTON SOUTH
DAKOTA. IN ADDITION TO HEAVY SNOWFALL...NORTH WINDS WILL INCREASE
TO 25 TO 35 MPH TUESDAY NIGHT...PRODUCING WIDESPREAD BLOWING AND
DRIFTING SNOW.
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.
&&
$$