Winter Storm Warning 4, NWS Sioux Falls, SD

000 
WWUS43 KFSD 300209
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
909 PM CDT SUN MAR 29 2009

...VERY HEAVY AND WIND DRIVEN SNOWFALL EXPECTED LATE MONDAY
THROUGH TUESDAY...

.AN INTENSE WINTER STORM WILL IMPACT THE REGION LATER MONDAY AND
TUESDAY. LIGHT PRECIPITATION WILL BREAK OUT TONIGHT IN THE FORM
OF RAIN MIXED WITH SNOW...THEN PRECIPITATION IS EXPECTED TO
GRADUALLY BECOME MORE WIDESPREAD THROUGH MONDAY...ESPECIALLY FROM
THE JAMES VALLEY WEST. WARMER AIR TO THE EAST TOWARD INTERSTATE
29 WILL GRADUALLY GIVE WAY AND ALLOW RAIN TO CHANGE TO SNOW
MONDAY NIGHT...ESPECIALLY AFTER MIDNIGHT. THE WORST CONDITIONS
WILL OCCUR MONDAY NIGHT INTO TUESDAY AS LOW PRESSURE INTENSIFIES
WHILE MOVING FROM THE CENTRAL PLAINS INTO SOUTHERN MINNESOTA.
SIGNIFICANT SNOW ACCUMULATIONS IN EXCESS OF A FOOT ARE EXPECTED
NORTH OF A LINE FROM HENDRICKS MINNESOTA TO MADISON SOUTH DAKOTA
TO ARMOUR TO CHAMBERLAIN...WHICH ARE EXPECTED TO MAKE TRAVEL VERY
DIFFICULT... IF NOT IMPOSSIBLE. A SHARP GRADIENT IN SNOWFALL WILL
LIKELY OCCUR TO THE SOUTHEAST OF THIS AREA...DROPPING TO LESS
THAN AN INCH ACROSS PARTS OF NORTHWEST IOWA. STRONG WINDS AS A
RESULT OF INTENSE LOW PRESSURE DEVELOPING MONDAY NIGHT AND
TUESDAY COULD RESULT IN NEAR BLIZZARD CONDITIONS...ESPECIALLY
DURING PERIODS OF HEAVY SNOWFALL IN AREAS OF SOUTHEAST SOUTH
DAKOTA WEST AND NORTH OF SIOUX FALLS...AND EASTWARD INTO
SOUTHWEST MINNESOTA NORTH OF I 90. WITH UNCERTAINTY IN THE
EASTERN EXTENT OF HEAVIEST SNOWFALL... THE WINTER STORM WATCH
WILL REMAIN IN EFFECT TO THE EAST OF THE WARNING AREA.

SDZ038-050-052-053-057-058-063-301015-
/O.CON.KFSD.WS.W.0004.090330T1800Z-090401T0000Z/
BEADLE-GREGORY-JERAULD-SANBORN-BRULE-AURORA-CHARLES MIX-
INCLUDING THE CITIES OF...HURON...GREGORY...BURKE...
WESSINGTON SPRINGS...ALPENA...WOONSOCKET...CHAMBERLAIN...
KIMBALL...PLANKINTON...WHITE LAKE...STICKNEY...WAGNER...PLATTE...
LAKE ANDES...MARTY
909 PM CDT SUN MAR 29 2009

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM MONDAY TO
7 PM CDT TUESDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM MONDAY TO 7 PM
CDT TUESDAY. 

AREAS OF LIGHT RAIN AND LIGHT SNOW MONDAY...WILL CHANGE TO ALL
SNOW LATE MONDAY AND MONDAY EVENING. SNOW WILL CONTINUE INTO
TUESDAY EVENING...POSSIBLY BECOMING HEAVY AT TIMES. SNOW
ACCUMULATIONS OF 10 TO 12 INCHES ARE EXPECTED...WITH THE WORST
CONDITIONS LIKELY TO OCCUR MONDAY NIGHT INTO TUESDAY. INCREASING
WINDS MONDAY NIGHT AND TUESDAY COULD RESULT IN NEAR BLIZZARD
CONDITIONS.

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.

&&

$$

MNZ071-SDZ039-040-054-055-059-060-064-065-301015-
/O.CON.KFSD.WS.W.0004.090331T0300Z-090401T0000Z/
LINCOLN-KINGSBURY-BROOKINGS-MINER-LAKE-DAVISON-HANSON-DOUGLAS-
HUTCHINSON-
INCLUDING THE CITIES OF...TYLER...HENDRICKS...LAKE BENTON...
IVANHOE...DE SMET...ARLINGTON...LAKE PRESTON...BROOKINGS...
HOWARD...MADISON...MITCHELL...ALEXANDRIA...EMERY...ARMOUR...
CORSICA...DELMONT...PARKSTON...FREEMAN...MENNO...TRIPP
909 PM CDT SUN MAR 29 2009

...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 PM MONDAY TO
7 PM CDT TUESDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 10 PM MONDAY TO
7 PM CDT TUESDAY. 

AREAS OF LIGHT RAIN AND LIGHT SNOW LATE SUNDAY NIGHT AND EARLY
MONDAY WILL BECOME MORE WIDESPREAD MONDAY. PRECIPITATION IS
EXPECTED TO CHANGE TO ALL SNOW LATER MONDAY NIGHT...WITH SNOW
HEAVY AT TIMES THROUGH TUESDAY...BEFORE TAPERING OFF TUESDAY
EVENING. SNOW ACCUMULATIONS BY TUESDAY EVENING ARE EXPECTED FROM
7 TO 13 INCHES...WITH THE WORST CONDITIONS LIKELY TO OCCUR LATE
MONDAY NIGHT INTO TUESDAY. INCREASING WINDS MONDAY NIGHT AND
TUESDAY COULD RESULT IN NEAR BLIZZARD CONDITIONS.

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.

&&

$$

IAZ001>003-012-013-020-MNZ072-080-081-089-090-097-098-SDZ056-061-
062-066>071-301015-
/O.CON.KFSD.WS.A.0003.090331T0600Z-090401T0000Z/
LYON-OSCEOLA-DICKINSON-SIOUX-OBRIEN-PLYMOUTH-MURRAY-COTTONWOOD-
NOBLES-JACKSON-PIPESTONE-ROCK-MOODY-MCCOOK-MINNEHAHA-TURNER-
LINCOLN-BON HOMME-YANKTON-CLAY-UNION-
INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD...
LARCHWOOD...SIBLEY...SPIRIT LAKE...MILFORD...ARNOLDS PARK...
ORANGE CITY...SIOUX CENTER...SHELDON...HARTLEY...SANBORN...
LE MARS...MARSHALL...SLAYTON...FULDA...WINDOM...MOUNTAIN LAKE...
WORTHINGTON...JACKSON...LAKEFIELD...PIPESTONE...LUVERNE...
FLANDREAU...SALEM...CANISTOTA...BRIDGEWATER...MONTROSE...
SIOUX FALLS...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
909 PM CDT SUN MAR 29 2009

...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT
THROUGH TUESDAY EVENING...

A WINTER STORM WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT
THROUGH TUESDAY EVENING. 

AREAS OF LIGHT RAIN MONDAY...MIXED WITH LIGHT SNOW AT TIMES...
WILL MIX CHANGE TO ALL SNOW LATE MONDAY NIGHT. SNOW MAY BECOME
HEAVY AT TIMES LATE MONDAY NIGHT THROUGH TUESDAY. SNOW
ACCUMULATIONS IN EXCESS OF 6 INCHES ARE POSSIBLE...WITH THE WORST
CONDITIONS LIKELY TO OCCUR VERY LATE MONDAY NIGHT AND TUESDAY...
WHEN INCREASING WINDS AND THE HEAVY SNOWFALL COULD RESULT IN NEAR
BLIZZARD CONDITIONS.

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.

&&

$$

000 
WWUS43 KFSD 300908
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
408 AM CDT MON MAR 30 2009

...HEAVY AND WIND DRIVEN SNOWFALL EXPECTED TONIGHT THROUGH
TUESDAY...

.AN INTENSE WINTER STORM WILL BRING HEAVY SNOW AND STRONG WINDS TO
PART OF THE REGION TONIGHT THROUGH TUESDAY. LIGHT RAIN...WITH SOME
SNOW WEST OF THE JAMES RIVER...WILL DEVELOP TODAY WITH PRECIPITATION
BECOMING WIDESPREAD AND ALL SNOW FROM THE WEST TONIGHT. SNOW WILL
CONTINUE TUESDAY...THEN DECREASE TUESDAY NIGHT. AS LOW PRESSURE
INTENSIFIES AND MOVES FROM THE CENTRAL PLAINS TO SOUTHERN
MINNESOTA BY LATE TUESDAY...STRONG WINDS WILL BECOME EVEN STRONGER
AND CAUSE BLOWING AND DRIFTING SNOW...WITH BLIZZARD CONDITIONS
DEVELOPING IN PART OF THE AREA. A FOOT OR MORE OF SNOW IS EXPECTED
NORTHWEST OF A LINE FROM BROOKINGS TO MITCHELL TO PICKSTOWN SOUTH
DAKOTA WITH TRAVEL BECOMING DIFFICULT OR IMPOSSIBLE. SNOW
ACCUMULATIONS WILL DECREASE SOUTHEAST OF THIS AREA...WITH AN INCH
OR LESS FROM JACKSON MINNESOTA INTO MUCH OF NORTHWEST IOWA. 

SDZ038-050-052-053-057-058-063-301715-
/O.CAN.KFSD.WS.W.0004.090330T1800Z-090401T0000Z/
/O.NEW.KFSD.BZ.W.0002.090331T0000Z-090401T0000Z/
BEADLE-GREGORY-JERAULD-SANBORN-BRULE-AURORA-CHARLES MIX-
INCLUDING THE CITIES OF...HURON...GREGORY...BURKE...
WESSINGTON SPRINGS...ALPENA...WOONSOCKET...CHAMBERLAIN...
KIMBALL...PLANKINTON...WHITE LAKE...STICKNEY...WAGNER...PLATTE...
LAKE ANDES...MARTY
408 AM CDT MON MAR 30 2009

...BLIZZARD WARNING IN EFFECT FROM 7 PM THIS EVENING TO 7 PM CDT
TUESDAY...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT FROM 7 PM THIS EVENING TO 7 PM CDT
TUESDAY. THE WINTER STORM WARNING HAS BEEN CANCELLED. 

AREAS OF LIGHT RAIN DEVELOPING TODAY WILL BECOME A STEADY MIXTURE
OF RAIN AND SNOW BY LATE AFTERNOON. THE PRECIPITATION WILL BECOME
ALL SNOW THIS EVENING WITH SNOW HEAVY AT TIMES TONIGHT AND
TUESDAY. NORTH TO NORTHWEST WINDS INCREASING TO 25 TO 40 MPH WILL
CAUSE BLIZZARD CONDITIONS WITH ZERO VISIBILITIES IN SNOW AND
BLOWING SNOW. TOTAL SNOW ACCUMULATIONS AROUND A FOOT ARE EXPECTED
WITH UP TO 15 INCHES POSSIBLE IN SOME PLACES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

MNZ071-SDZ040-054-055-059-060-064-065-301715-
/O.CAN.KFSD.WS.W.0004.090331T0300Z-090401T0000Z/
/O.NEW.KFSD.BZ.W.0002.090331T0600Z-090401T0000Z/
LINCOLN-BROOKINGS-MINER-LAKE-DAVISON-HANSON-DOUGLAS-HUTCHINSON-
INCLUDING THE CITIES OF...TYLER...HENDRICKS...LAKE BENTON...
IVANHOE...BROOKINGS...HOWARD...MADISON...MITCHELL...ALEXANDRIA...
EMERY...ARMOUR...CORSICA...DELMONT...PARKSTON...FREEMAN...MENNO...
TRIPP
408 AM CDT MON MAR 30 2009

...BLIZZARD WARNING IN EFFECT FROM 1 AM TO 7 PM CDT TUESDAY...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT FROM 1 AM TO 7 PM CDT TUESDAY. THE
WINTER STORM WARNING HAS BEEN CANCELLED. 

AREAS OF LIGHT RAIN DEVELOPING TODAY WILL BECOME A STEADY MIXTURE
OF RAIN AND SNOW THIS EVENING. THE PRECIPITATION WILL BECOME ALL
SNOW BY MIDNIGHT TONIGHT WITH SNOW BECOMING HEAVY AT TIMES THROUGH
TUESDAY. NORTH TO NORTHWEST WINDS INCREASING TO 25 TO 35 MPH WILL
CAUSE BLIZZARD CONDITIONS WITH ZERO VISIBILITIES IN SNOW AND
BLOWING SNOW. TOTAL SNOW ACCUMULATIONS OF 6 INCHES TO AROUND A
FOOT ARE EXPECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

SDZ039-301715-
/O.CAN.KFSD.WS.W.0004.090331T0300Z-090401T0000Z/
/O.NEW.KFSD.BZ.W.0002.090331T0000Z-090401T0000Z/
KINGSBURY-
INCLUDING THE CITIES OF...DE SMET...ARLINGTON...LAKE PRESTON
408 AM CDT MON MAR 30 2009

...BLIZZARD WARNING IN EFFECT FROM 7 PM THIS EVENING TO 7 PM CDT
TUESDAY...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT FROM 7 PM THIS EVENING TO 7 PM CDT
TUESDAY. THE WINTER STORM WARNING HAS BEEN CANCELLED. 

AREAS OF LIGHT RAIN DEVELOPING TODAY WILL BECOME A STEADY MIXTURE
OF RAIN AND SNOW BY THE END OF THE DAY. THE PRECIPITATION WILL
BECOME ALL SNOW THIS EVENING WITH SNOW HEAVY AT TIMES TONIGHT AND
TUESDAY. NORTH TO NORTHWEST WINDS INCREASING TO 25 TO 35 MPH WILL
CAUSE BLIZZARD CONDITIONS WITH ZERO VISIBILITIES IN SNOW AND
BLOWING SNOW. TOTAL SNOW ACCUMULATIONS AROUND A FOOT ARE EXPECTED
WITH UP TO 15 INCHES POSSIBLE IN SOME PLACES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

IAZ001>003-012-013-020-MNZ081-089-090-301015-
/O.CAN.KFSD.WS.A.0003.090331T0600Z-090401T0000Z/
LYON-OSCEOLA-DICKINSON-SIOUX-OBRIEN-PLYMOUTH-COTTONWOOD-NOBLES-
JACKSON-
INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD...
LARCHWOOD...SIBLEY...SPIRIT LAKE...MILFORD...ARNOLDS PARK...
ORANGE CITY...SIOUX CENTER...SHELDON...HARTLEY...SANBORN...
LE MARS...WINDOM...MOUNTAIN LAKE...WORTHINGTON...JACKSON...
LAKEFIELD
408 AM CDT MON MAR 30 2009

...WINTER STORM WATCH IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS CANCELLED THE
WINTER STORM WATCH. 

DEVELOPING RAIN THIS AFTERNOON AND EVENING IS EXPECTED TO CHANGE
TO SNOW LATE TONIGHT. SOME SNOW ACCUMULATIONS ARE LIKELY BY
TUESDAY...BUT HEAVY SNOW IS NOT EXPECTED.

$$

SDZ056-061-068-069-301715-
/O.UPG.KFSD.WS.A.0003.090331T0600Z-090401T0000Z/
/O.NEW.KFSD.BZ.W.0002.090331T0600Z-090401T0000Z/
MOODY-MCCOOK-BON HOMME-YANKTON-
INCLUDING THE CITIES OF...FLANDREAU...SALEM...CANISTOTA...
BRIDGEWATER...MONTROSE...TYNDALL...SCOTLAND...SPRINGFIELD...
AVON...TABOR...YANKTON
408 AM CDT MON MAR 30 2009

...BLIZZARD WARNING IN EFFECT FROM 1 AM TO 7 PM CDT TUESDAY...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT FROM 1 AM TO 7 PM CDT TUESDAY. THE
WINTER STORM WATCH IS NO LONGER IN EFFECT. 

AREAS OF LIGHT RAIN DEVELOPING TODAY WILL BECOME A STEADY MIXTURE
OF RAIN AND SNOW BY LATE EVENING. THE PRECIPITATION WILL BECOME
ALL SNOW AFTER MIDNIGHT TONIGHT WITH SNOW BECOMING HEAVY AT TIMES
THROUGH TUESDAY. NORTH TO NORTHWEST WINDS INCREASING TO 25 TO 35
MPH WILL CAUSE BLIZZARD CONDITIONS WITH ZERO VISIBILITIES IN SNOW
AND BLOWING SNOW BY TUESDAY. TOTAL SNOW ACCUMULATIONS OF 6 INCHES TO
AROUND A FOOT ARE EXPECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

MNZ072-080-097-098-SDZ062-066-067-070-071-301715-
/O.UPG.KFSD.WS.A.0003.090331T0600Z-090401T0000Z/
/O.NEW.KFSD.WW.Y.0017.090331T0900Z-090401T0000Z/
LYON-MURRAY-PIPESTONE-ROCK-MINNEHAHA-TURNER-LINCOLN-CLAY-UNION-
INCLUDING THE CITIES OF...MARSHALL...SLAYTON...FULDA...
PIPESTONE...LUVERNE...SIOUX FALLS...PARKER...CENTERVILLE...
MARION...VIBORG...HURLEY...CHANCELLOR...CANTON...LENNOX...TEA...
HARRISBURG...VERMILLION...NORTH SIOUX CITY...BERESFORD...
ELK POINT...ALCESTER...JEFFERSON
408 AM CDT MON MAR 30 2009

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 7 PM CDT
TUESDAY...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM 4 AM TO 7 PM CDT TUESDAY. THE WINTER STORM WATCH IS NO LONGER
IN EFFECT.

AREAS OF LIGHT RAIN DEVELOPING TODAY WILL BECOME A MIXTURE OF
RAIN AND SNOW TONIGHT. THE PRECIPITATION WILL BECOME ALL SNOW
AFTER MIDNIGHT WITH SNOW CONTINUING THROUGH TUESDAY. NORTH TO
NORTHWEST WINDS INCREASING TO 20 TO 35 MPH WILL CAUSE BLOWING SNOW
WITH VISIBILITIES DROPPING TO A QUARTER MILE OR LESS AT TIMES.
TOTAL SNOW ACCUMULATIONS RANGING FROM 2 TO 6 INCHES ARE EXPECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND
BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN
AREAS.

&&

$$

NEZ013-301715-
/O.NEW.KFSD.WW.Y.0017.090331T0900Z-090401T0000Z/
DIXON-
INCLUDING THE CITIES OF...WAKEFIELD...PONCA...ALLEN
408 AM CDT MON MAR 30 2009

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 7 PM CDT
TUESDAY...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM 4 AM TO 7 PM CDT TUESDAY.

AREAS OF LIGHT RAIN DEVELOPING TODAY WILL BECOME A MIXTURE OF
RAIN AND SNOW TONIGHT. THE PRECIPITATION WILL BECOME ALL SNOW
AFTER MIDNIGHT WITH SNOW CONTINUING THROUGH TUESDAY. NORTH TO
NORTHWEST WINDS INCREASING TO 20 TO 35 MPH WILL CAUSE BLOWING SNOW
WITH VISIBILITIES DROPPING TO A QUARTER MILE OR LESS AT TIMES.
TOTAL SNOW ACCUMULATIONS RANGING FROM 2 TO 4 INCHES ARE EXPECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND
BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN
AREAS.

&&

$$
WILLIAMS

AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1035 AM CDT SUN MAR 29 2009

.DISCUSSION...
GOING FCST IS IN REALLY GOOD SHAPE. IN FACT EXCEPT FOR TWEAKING
CLOUD COVER...HAVE NOT HAD TO ALTER ANY OTHER GRIDS. THEREFORE
ANTICIPATE NO UPDATE TO THE ZFP ATTM.    /MJF

&&

.AVIATION...
SFC RIDGE OF HIGH PRESSURE IS NOW IN OUR FAR ERN FORECAST AREA AS OF
15Z. AS THE RIDGE CONTS TO MOVE EWD TODAY...THE WINDS WL BECOME SELY
THRU THE ENTIRE FORECAST AREA THRU THE AFTERNOON HRS. OCCASIONAL
GUSTS AOA 25KT ARE POSSIBLE MAINLY WEST OF THE JAMES RIVER VALLEY
THIS AFTERNOON...WITH BREEZY CONDS WORKING EWD TONIGHT FM W TO E
THRU THE ENTIRE FORECAST AREA. TONIGHT...EXPECT AN ESE SFC FLOW AND
WINDS OF 15 TO 25 MPH ON AVERAGE. VFR CIGS/VIS IS EXPECTED THRU 06Z
TONIGHT. HOWEVER AFT 06Z...LOW LEVEL MOISTURE BEGINS TO RETURN BUT
THERE ARE DISCREPANCIES BETWEEN THE 12Z NAM AND 06Z GFS WHERE THE
MVFR/IFR CIGS MAY OCCUR LATE TONIGHT/MONDAY MORNING. THEREFORE WILL
WANT TO WAIT FOR A DIAGONOSIS OF THE 12Z GFS BEFORE TRYING TO PLACE
WHERE THE BEST CHCS FOR CONDS LESS THAN VFR ARE LATE TONIGHT AND
MONDAY MORNING.    /MJF

&&

.PREV DISCUSSION...
PRESENT WATER VAPOR IMAGE SHOWING STRONG UPPER LEVEL SYSTEM MOVING
THROUGH THE PACIFIC NORTHWEST...AND IT WILL BE THIS SYSTEM THAT WILL
BRING A SIGNIFICANT EARLY SPRING SNOWSTORM TO OUR AREA FOR THE
BEGINNING OF THE WEEK.

FOR TODAY...ONE MORE FAIRLY DECENT DAY IN STORE BEFORE THINGS BEGIN
TO DOWNHILL LATE TONIGHT. WITH WEAK SURFACE HIGH PRESSURE PUSHING TO
THE EAST...AND DEVELOPING LOW PRESSURE OVER WYOMING...WILL SEE AN
STRENGTHENING SOUTHEASTERLY SLOW LEVEL FLOW THIS AFTERNOON WHICH
WILL DRIVE WARMER AIR INTO THE REGION. WITH THAT...HIGHS ARE LOOKING
TO BE AROUND 8 TO 10 DEGREES WARMER THAN YESTERDAY...IN THE MID 40S
TO MID 50S ACROSS THE CWA. ACTUALLY STAYED ON THE LOWER SIDE OF
GUIDANCE HOWEVER WITH INCREASING HIGH/MID LEVEL CLOUDS OUT AHEAD OF
AFOREMENTIONED SYSTEM. AS THE SURFACE LOW MOVES OUT INTO THE WESTERN
HIGH PLAINS LATER TODAY...AN INCREASING PRESSURE GRADIENT WILL RAMP
UP OUR WINDS IN OUR WESTERN ZONES LATE IN THE AFTERNOON.

BY TONIGHT...TH UPPER LEVEL LOW DIVES INTO THE CENTRAL
ROCKIES...WHILE A DOUBLE BARRELED SURFACE LOW TRACKS INTO THE
CENTRAL PLAINS. MODELS ARE STILL IN PRETTY GOOD AGREEMENT WITH THE
POSITION/TIMING OF THE UPPER/SURFACE FEATURES...THOUGH THE NAM
CONTINUES TO BE THE SLOWER AND FARTHER NORTH SOLUTION. SO ONCE AGAIN
DISCARDED IT. ALL MODELS HAVE SEEMED TO SLOW THINGS DOWN A
TOUCH...SO DELAYED ONSET OF PRECIPITATION SOMEWHAT LATER TONIGHT
OVER OUR NORTHWESTERN ZONES AS THE MID/UPPER LEVEL WAVE PUSH INTO
THE WESTERN HIGH PLAINS. FOR THIS REASON...ALSO DELAYED THE ONSET OF
OUR WINTER STORM WATCH BY 6 HOURS...BEGINNING IT AT 12Z ON MONDAY
MORNING. THERMAL PROFILES STILL SUGGEST THAT MUCH OF THE COLDER AIR
WILL BE NORTH AND WEST OF OUR AREA ON MONDAY MORNING WITH A PSEUDO
WARM FRONT JUST TO ALONG THE SOUTHERN EDGES OF OUR CWA. FOR THIS
REASON...ONLY OUR NORTH AND WESTERN ZONES WILL HAVE PRIMARILY SNOW
DURING THE DAY ON MONDAY...WITH AREAS TO THE SOUTH HAVING RAIN/SNOW
OR PLAIN RAIN. BEST CHANCE OF PRECIPITATION WILL BE OVER THE
NORTHWESTERN CWA WHERE BEST PV ADVECTION AND MID LEVEL FRONTOGENESIS
RESIDES. ON MONDAY NIGHT...AS SURFACE LOW OVER EASTERN
KANSAS/NEBRASKA BEGINS TO DEEPEN...COLDER AIR WILL BEGIN TO BE DRAWN
SOUTHWARD...AND PRECIPITATION WILL CHANGE TO SNOW FROM NORTHWEST TO
SOUTHEAST OVER OUR AREA DURING THE NIGHT. HIGHEST QPF WILL BE OVER
OUR NORTHWESTERN AREAS LATE IN THE NIGHT WITH DEVELOPING
TROWAL...THEN TRANSITION TO OUR EAST AND SOUTHEAST DURING THE DAY ON
TUESDAY WITH STRONG VORT LOBE SWINGING INTO OUR SOUTHEASTERN AREAS.
COULD SEE PRETTY GOOD SNOWFALL RATES IN OUR EAST ON TUESDAY WITH
PRECIPITATION BECOMING CONVECTIVE WITH INSTABILITY OVER IN FAIRLY
STEEP MIDLEVEL LAPSE RATES.  WILL HAVE NEAR BLIZZARD CONDITIONS
ACROSS OUR NORTH WITH VERY STRONG NORTHWESTERLY WINDS.
PRECIPITATION WILL WIND DOWN BY TUESDAY EVENING...ENDING OVER OUR
NORTHEAST EARLY ON TUESDAY NIGHT. WHEN ALL IS SAID AND DONE...OUR
NORTHERNMOST COUPLE ROWS OF COUNTIES COULD GET IN EXCESS OF ONE FOOT
OF SNOW FROM MONDAY TO TUESDAY...WITH AROUND 5 INCHES FROM LAKE
ANDES TO YANKTON TO SPENCER. LOWEST AMOUNTS WILL BE OVER OUR FAR
NORTHEASTERN NEBRASKA/NORTHWESTERN IOWA COUNTIES WHERE TRANSITION TO
SNOW WILL BE LATER...THUS THEY MAY RECEIVE ONLY 2 OR 3 INCHES.  /JM

&&

.FSD WATCHES/WARNINGS/ADVISORIES...

IA...WINTER STORM WATCH FROM LATE MONDAY NIGHT THROUGH TUESDAY
     EVENING FOR IAZ001>003-012-013-020.

MN...WINTER STORM WATCH FROM MONDAY EVENING THROUGH TUESDAY EVENING
     FOR MNZ071-072-097.

     WINTER STORM WATCH FROM LATE MONDAY NIGHT THROUGH TUESDAY
     EVENING FOR MNZ080-081-089-090-098.

NE...NONE.
SD...WINTER STORM WATCH FROM MONDAY EVENING THROUGH TUESDAY EVENING
     FOR SDZ040-055-056-059>065-068.

     WINTER STORM WATCH FROM LATE MONDAY NIGHT THROUGH TUESDAY
     EVENING FOR SDZ066-067-069>071.

     WINTER STORM WATCH FROM MONDAY MORNING THROUGH TUESDAY
     AFTERNOON FOR SDZ038-039-052>054-057-058.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
601 AM CDT SUN MAR 29 2009

SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-
IAZ001>003-012>014-020>022-031-032-NEZ013-014-301200-
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-
601 AM CDT SUN MAR 29 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA...
SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA.

.DAY ONE...TODAY AND TONIGHT

FLOODING...

ELEVATED RIVER LEVELS DUE TO RECENT SNOW MELT COMBINED WITH
RAINFALL ACROSS THE AREA WILL RESULT IN MINOR TO MODERATE
FLOODING ALONG THE BIG SIOUX AND JAMES RIVER BASINS. MINOR TO
MODERATE FLOODING IS EXPECTED ALONG THE JAMES RIVER BASIN FROM
HURON TO SCOTLAND...AND ALONG THE BIG SIOUX RIVER BASIN FROM
BRUCE TO THE NORTHERN EDGE OF SIOUX FALLS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

STRONG LOW PRESSURE WILL MOVE EAST ACROSS THE CENTRAL PLAINS
MONDAY AND INTO IOWA ON TUESDAY. THIS SYSTEM WILL PRODUCE
WIDESPREAD SNOW... WHICH WILL SPREAD WEST TO EAST ACROSS THE
REGION MONDAY INTO TUESDAY. THE HEAVIEST SNOW IS EXPECTED TO FALL
ACROSS EAST CENTRAL AND SOUTHEAST SOUTH DAKOTA INTO SOUTHWEST
MINNESOTA MONDAY INTO TUESDAY...WITH 8 TO 12 INCHES POSSIBLE. 4
TO 6 INCHES OF SNOW WILL BE POSSIBLE ACROSS THE REST OF THE AREA.
STRONG WINDS WILL ALSO OCCUR WITH THIS SYSTEM MONDAY AND
TUESDAY...AND WILL LIKELY CREATE WIDESPREAD BLOWING SNOW.

.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.