Alert archive / South Dakota / Blizzard Watches in 2008

Blizzard Watch 2, NWS Sioux Falls, SD

December 12, 20084 counties in Minnesota; 16 counties in South Dakota

NWS Sioux Falls, SD issued this blizzard watch at Dec 12, 2008, 3:25 AM CST for 4 counties in Minnesota; 16 counties in South Dakota. It took effect at Dec 13, 2008, 4:25 AM CST. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Dec 12, 2008, 3:25 AM CST (09:25 UTC)
In effect from
Dec 13, 2008, 4:25 AM CST
Expired
Dec 13, 2008, 4:01 PM CST
In force
12 hr
Issued by
NWS Sioux Falls, SD

Counties Lincoln County, MN, Lyon County, MN, Murray County, MN, Pipestone County, MN, Aurora County, SD, Beadle County, SD, Brookings County, SD, Brule County, SD, Charles Mix County, SD, Davison County, SD, Douglas County, SD, Gregory County, SD, Hanson County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, McCook County, SD, Miner County, SD, Moody County, SD, Sanborn County, SD

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 9.4 hours before the alert went out and 126 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Aberdeen, SD at 00:00Z on 2008-12-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 00:00Z on 2008-12-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
585 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS43 KFSD 120925
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
325 AM CST FRI DEC 12 2008

.LOW PRESSURE WILL DROP SOUTHEAST INTO THE CENTRAL PLAINS EARLY
SUNDAY...WITH SHARPLY COLDER AIR AND VERY STRONG NORTHERLY WINDS
EXPECTED OVER PARTS OF THE AREA BEHIND THE LOW PRESSURE. LOCATIONS
FROM SOUTH CENTRAL INTO EAST CENTRAL SOUTH DAKOTA...GENERALLY WEST
AND NORTH OF A LINE FROM LAKE ANDES...TO MITCHELL TO BROOKINGS...
COULD SEE BLIZZARD CONDITIONS DEVELOP SUNDAY INTO SUNDAY EVENING.

SDZ038>040-050-052>054-057>059-063-064-121730-
/O.NEW.KFSD.BZ.A.0002.081214T1200Z-081215T0600Z/
BEADLE-KINGSBURY-BROOKINGS-GREGORY-JERAULD-SANBORN-MINER-BRULE-
AURORA-DAVISON-CHARLES MIX-DOUGLAS-
INCLUDING THE CITIES OF...HURON...DE SMET...ARLINGTON...
LAKE PRESTON...BROOKINGS...GREGORY...BURKE...WESSINGTON SPRINGS...
ALPENA...WOONSOCKET...HOWARD...CHAMBERLAIN...KIMBALL...
PLANKINTON...WHITE LAKE...STICKNEY...MITCHELL...WAGNER...PLATTE...
LAKE ANDES...MARTY...ARMOUR...CORSICA...DELMONT
325 AM CST FRI DEC 12 2008

...BLIZZARD WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A BLIZZARD
WATCH...WHICH IS IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING. 

STRONG NORTHERLY WINDS OF 30 TO 40 MPH ARE LIKELY SUNDAY INTO
SUNDAY EVENING. SNOW WILL MOVE INTO THE AREA SUNDAY MORNING...AND
ALTHOUGH SNOWFALL AMOUNTS ARE NOT EXPECTED TO BE HEAVY...THE STRONG
WINDS AND SNOW COULD PRODUCE BLIZZARD CONDITIONS WITH VERY LOW
VISIBILITY.

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY
DANGEROUS.

$$
 JH
6 follow-up statements
000 
WWUS43 KFSD 121723
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1123 AM CST FRI DEC 12 2008

.LOW PRESSURE WILL DROP SOUTHEAST INTO THE CENTRAL PLAINS EARLY
SUNDAY...WITH SHARPLY COLDER AIR AND VERY STRONG NORTHERLY WINDS
EXPECTED OVER PARTS OF THE AREA BEHIND THE LOW PRESSURE.
LOCATIONS FROM SOUTH CENTRAL INTO EAST CENTRAL SOUTH DAKOTA...
GENERALLY WEST AND NORTH OF A LINE FROM LAKE ANDES...TO MITCHELL
TO BROOKINGS... COULD SEE BLIZZARD CONDITIONS DEVELOP SUNDAY INTO
SUNDAY EVENING.

SDZ038>040-050-052>054-057>059-063-064-130130-
/O.CON.KFSD.BZ.A.0002.081214T1200Z-081215T0600Z/
BEADLE-KINGSBURY-BROOKINGS-GREGORY-JERAULD-SANBORN-MINER-BRULE-
AURORA-DAVISON-CHARLES MIX-DOUGLAS-
INCLUDING THE CITIES OF...HURON...DE SMET...ARLINGTON...
LAKE PRESTON...BROOKINGS...GREGORY...BURKE...WESSINGTON SPRINGS...
ALPENA...WOONSOCKET...HOWARD...CHAMBERLAIN...KIMBALL...
PLANKINTON...WHITE LAKE...STICKNEY...MITCHELL...WAGNER...PLATTE...
LAKE ANDES...MARTY...ARMOUR...CORSICA...DELMONT
1123 AM CST FRI DEC 12 2008

...BLIZZARD WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING...

A BLIZZARD WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING. 

STRONG NORTHERLY WINDS OF 30 TO 40 MPH ARE LIKELY SUNDAY INTO
SUNDAY EVENING. SNOW WILL MOVE INTO THE AREA SUNDAY MORNING...AND
ALTHOUGH SNOWFALL AMOUNTS ARE NOT EXPECTED TO BE HEAVY...THE
STRONG WINDS AND SNOW COULD PRODUCE BLIZZARD CONDITIONS WITH VERY
LOW VISIBILITY.

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY
DANGEROUS.

$$
WILLIAMS
000 
WWUS43 KFSD 122120
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
320 PM CST FRI DEC 12 2008

.LOW PRESSURE WILL DROP SOUTHEAST INTO THE CENTRAL PLAINS LATE
SATURDAY NIGHT INTO SUNDAY...WITH SHARPLY COLDER AIR AND VERY
STRONG NORTHERLY WINDS EXPECTED OVER PARTS OF THE AREA BEHIND THE
LOW PRESSURE. LOCATIONS FROM SOUTH CENTRAL INTO EAST CENTRAL SOUTH
DAKOTA... GENERALLY WEST AND NORTH OF A LINE FROM LAKE ANDES...TO
MITCHELL TO BROOKINGS... COULD SEE BLIZZARD CONDITIONS DEVELOP
SUNDAY INTO SUNDAY EVENING.

SDZ038>040-050-052>054-057>059-063-064-130530-
/O.CON.KFSD.BZ.A.0002.081214T1200Z-081215T0600Z/
BEADLE-KINGSBURY-BROOKINGS-GREGORY-JERAULD-SANBORN-MINER-BRULE-
AURORA-DAVISON-CHARLES MIX-DOUGLAS-
INCLUDING THE CITIES OF...HURON...DE SMET...ARLINGTON...
LAKE PRESTON...BROOKINGS...GREGORY...BURKE...WESSINGTON SPRINGS...
ALPENA...WOONSOCKET...HOWARD...CHAMBERLAIN...KIMBALL...
PLANKINTON...WHITE LAKE...STICKNEY...MITCHELL...WAGNER...PLATTE...
LAKE ANDES...MARTY...ARMOUR...CORSICA...DELMONT
320 PM CST FRI DEC 12 2008

...BLIZZARD WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING...

A BLIZZARD WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING. 

STRONG NORTHERLY WINDS OF 30 TO 40 MPH ARE LIKELY LATE SATURDAY
NIGHT INTO SUNDAY EVENING. SNOW WILL MOVE INTO THE AREA LATE
SATURDAY NIGHT AND CONTINUE DURING THE DAY ON SUNDAY. SNOWFALL
AMOUNTS OF 2 TO 5 INCHES ARE EXPECTED IN THE WATCH AREA...AND THIS
COMBINED WITH THE STRONG WINDS COULD PRODUCE BLIZZARD CONDITIONS
WITH VERY LOW VISIBILITY. WIND CHILLS WILL ALSO DROP TO 15 BELOW
TO 25 BELOW ON SUNDAY AS ACTUAL TEMPERATURES FALL TO NEAR ZERO BY
LATE SUNDAY AFTERNOON.

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY
DANGEROUS.

$$
000 
WWUS43 KFSD 130230
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
830 PM CST FRI DEC 12 2008

.LOW PRESSURE WILL DROP SOUTHEAST INTO THE CENTRAL PLAINS LATE
SATURDAY NIGHT INTO SUNDAY...WITH SHARPLY COLDER AIR AND VERY
STRONG NORTHERLY WINDS EXPECTED OVER PARTS OF THE AREA BEHIND THE
LOW PRESSURE. LOCATIONS FROM SOUTH CENTRAL INTO EAST CENTRAL
SOUTH DAKOTA... GENERALLY WEST AND NORTH OF A LINE FROM LAKE
ANDES...TO MITCHELL TO BROOKINGS... COULD SEE BLIZZARD CONDITIONS
DEVELOP SUNDAY INTO SUNDAY EVENING.

SDZ038>040-050-052>054-057>059-063-064-131030-
/O.CON.KFSD.BZ.A.0002.081214T1200Z-081215T0600Z/
BEADLE-KINGSBURY-BROOKINGS-GREGORY-JERAULD-SANBORN-MINER-BRULE-
AURORA-DAVISON-CHARLES MIX-DOUGLAS-
INCLUDING THE CITIES OF...HURON...DE SMET...ARLINGTON...
LAKE PRESTON...BROOKINGS...GREGORY...BURKE...WESSINGTON SPRINGS...
ALPENA...WOONSOCKET...HOWARD...CHAMBERLAIN...KIMBALL...
PLANKINTON...WHITE LAKE...STICKNEY...MITCHELL...WAGNER...PLATTE...
LAKE ANDES...MARTY...ARMOUR...CORSICA...DELMONT
830 PM CST FRI DEC 12 2008

...BLIZZARD WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING...

A BLIZZARD WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING. 

STRONG NORTHERLY WINDS OF 30 TO 40 MPH ARE LIKELY LATE SATURDAY
NIGHT INTO SUNDAY EVENING. SNOW WILL MOVE INTO THE AREA LATE
SATURDAY NIGHT AND CONTINUE DURING THE DAY ON SUNDAY. SNOWFALL
AMOUNTS OF 2 TO 5 INCHES ARE EXPECTED IN THE WATCH AREA...AND
THIS COMBINED WITH THE STRONG WINDS COULD PRODUCE BLIZZARD
CONDITIONS WITH VERY LOW VISIBILITY. WIND CHILLS WILL ALSO DROP
TO 15 BELOW TO 25 BELOW ON SUNDAY AS ACTUAL TEMPERATURES FALL TO
NEAR ZERO BY LATE SUNDAY AFTERNOON.

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY
DANGEROUS.

$$
000 
WWUS43 KFSD 131025
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
425 AM CST SAT DEC 13 2008

.LOW PRESSURE WILL DROP SOUTHEAST INTO THE CENTRAL PLAINS LATE
TONIGHT INTO SUNDAY...WITH SHARPLY COLDER AIR AND VERY
STRONG NORTHERLY WINDS EXPECTED OVER PARTS OF THE AREA BEHIND THE
LOW PRESSURE. LOCATIONS FROM SOUTH CENTRAL INTO EAST CENTRAL
SOUTH DAKOTA... GENERALLY WEST AND NORTH OF A LINE FROM LAKE
ANDES...TO MADISON...TO SLAYTON MINNESOTA...COULD SEE BLIZZARD
CONDITIONS DEVELOP SUNDAY INTO SUNDAY EVENING.

MNZ071-072-080-097-SDZ055-056-060-061-131830-
/O.EXA.KFSD.BZ.A.0002.081214T1200Z-081215T0600Z/
LINCOLN-LYON-MURRAY-PIPESTONE-LAKE-MOODY-HANSON-MCCOOK-
INCLUDING THE CITIES OF...TYLER...HENDRICKS...LAKE BENTON...
IVANHOE...MARSHALL...SLAYTON...FULDA...PIPESTONE...MADISON...
FLANDREAU...ALEXANDRIA...EMERY...SALEM...CANISTOTA...
BRIDGEWATER...MONTROSE
425 AM CST SAT DEC 13 2008

...BLIZZARD WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A BLIZZARD
WATCH...WHICH IS IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING. 

STRONG NORTHERLY WINDS OF 30 TO 40 MPH ARE LIKELY LATE TONIGHT
INTO SUNDAY EVENING. SNOW WILL MOVE INTO THE AREA LATE TONIGHT AND
CONTINUE DURING THE DAY ON SUNDAY. SNOWFALL AMOUNTS OF 2 TO 4
INCHES ARE EXPECTED IN THE WATCH AREA...AND THIS COMBINED WITH THE
STRONG WINDS COULD PRODUCE BLIZZARD CONDITIONS WITH VERY LOW
VISIBILITY. WIND CHILLS WILL ALSO DROP TO 15 BELOW TO 25 BELOW ON
SUNDAY AS ACTUAL TEMPERATURES FALL TO NEAR ZERO BY LATE SUNDAY
AFTERNOON.

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY
DANGEROUS.

$$

SDZ038>040-050-052>054-057>059-063-064-131830-
/O.CON.KFSD.BZ.A.0002.081214T1200Z-081215T0600Z/
BEADLE-KINGSBURY-BROOKINGS-GREGORY-JERAULD-SANBORN-MINER-BRULE-
AURORA-DAVISON-CHARLES MIX-DOUGLAS-
INCLUDING THE CITIES OF...HURON...DE SMET...ARLINGTON...
LAKE PRESTON...BROOKINGS...GREGORY...BURKE...WESSINGTON SPRINGS...
ALPENA...WOONSOCKET...HOWARD...CHAMBERLAIN...KIMBALL...
PLANKINTON...WHITE LAKE...STICKNEY...MITCHELL...WAGNER...PLATTE...
LAKE ANDES...MARTY...ARMOUR...CORSICA...DELMONT
425 AM CST SAT DEC 13 2008

...BLIZZARD WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING...

A BLIZZARD WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING. 

STRONG NORTHERLY WINDS OF 30 TO 40 MPH ARE LIKELY LATE TONIGHT INTO
SUNDAY EVENING. SNOW WILL MOVE INTO THE AREA LATE TONIGHT AND
CONTINUE DURING THE DAY ON SUNDAY. SNOWFALL AMOUNTS OF 2 TO 4
INCHES ARE EXPECTED IN THE WATCH AREA...AND THIS COMBINED WITH THE
STRONG WINDS COULD PRODUCE BLIZZARD CONDITIONS WITH VERY LOW
VISIBILITY. WIND CHILLS WILL ALSO DROP TO 15 BELOW TO 25 BELOW ON
SUNDAY AS ACTUAL TEMPERATURES FALL TO NEAR ZERO BY LATE SUNDAY
AFTERNOON.

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY
DANGEROUS.

$$
000 
WWUS43 KFSD 131633
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1033 AM CST SAT DEC 13 2008

.LOW PRESSURE WILL DROP SOUTHEAST INTO THE CENTRAL PLAINS LATE
TONIGHT INTO SUNDAY...WITH SHARPLY COLDER AIR AND VERY STRONG
NORTHERLY WINDS EXPECTED OVER PARTS OF THE AREA BEHIND THE LOW
PRESSURE. THE TREND HAS BEEN FOR THE SYSTEM TO SPREAD IN JUST A
BIT FASTER INTO SOUTH CENTRAL TO EAST CENTRAL SOUTH DAKOTA...
AND THE START TIME FOR THE WATCH HAS BEEN MOVED FORWARD SEVERAL
HOURS TO ACCOUNT FOR THE THREAT OF RAPIDLY DETERIORATING
CONDITIONS. LOCATIONS FROM SOUTH CENTRAL INTO EAST CENTRAL SOUTH
DAKOTA... GENERALLY WEST AND NORTH OF A LINE FROM LAKE ANDES...TO
MADISON...TO SLAYTON MINNESOTA...COULD SEE LIFE THREATENING
BLIZZARD CONDITIONS DEVELOP FROM LATE SATURDAY NIGHT THROUGH
SUNDAY EVENING.

SDZ038>040-050-052>061-063-064-140045-
/O.EXT.KFSD.BZ.A.0002.081214T0900Z-081215T0600Z/
BEADLE-KINGSBURY-BROOKINGS-GREGORY-JERAULD-SANBORN-MINER-LAKE-
MOODY-BRULE-AURORA-DAVISON-HANSON-MCCOOK-CHARLES MIX-DOUGLAS-
INCLUDING THE CITIES OF...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...WAGNER...PLATTE...LAKE ANDES...MARTY...ARMOUR...
CORSICA...DELMONT
1033 AM CST SAT DEC 13 2008

...BLIZZARD WATCH NOW IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY
EVENING...

THE BLIZZARD WATCH IS NOW IN EFFECT FROM LATE TONIGHT THROUGH
SUNDAY EVENING. 

STRONG NORTHERLY WINDS OF 30 TO 40 MPH ARE LIKELY LATE TONIGHT
INTO SUNDAY EVENING. SNOW WILL MOVE INTO THE AREA LATE TONIGHT
AND CONTINUE DURING THE DAY ON SUNDAY. SNOWFALL AMOUNTS OF 2 TO
4 INCHES ARE EXPECTED IN THE WATCH AREA...AND THIS COMBINED WITH
THE STRONG WINDS COULD PRODUCE BLIZZARD CONDITIONS WITH VERY LOW
VISIBILITY...AND NEAR WHITEOUT CONDITIONS AT TIMES OF FALLING
SNOW. WIND CHILLS WILL ALSO DROP TO 15 BELOW TO 25 BELOW ON
SUNDAY AS ACTUAL TEMPERATURES FALL TO NEAR ZERO BY LATE SUNDAY
AFTERNOON.

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY
DANGEROUS.

$$

MNZ071-072-080-097-140045-
/O.CON.KFSD.BZ.A.0002.081214T1200Z-081215T0600Z/
LINCOLN-LYON-MURRAY-PIPESTONE-
INCLUDING THE CITIES OF...TYLER...HENDRICKS...LAKE BENTON...
IVANHOE...MARSHALL...SLAYTON...FULDA...PIPESTONE
1033 AM CST SAT DEC 13 2008

...BLIZZARD WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING...

A BLIZZARD WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING. 

STRONG NORTHERLY WINDS OF 30 TO 40 MPH ARE LIKELY TO DEVELOP
EARLY SUNDAY. SNOW WILL MOVE INTO THE AREA VERY LATE TONIGHT
AND CONTINUE DURING THE DAY ON SUNDAY. SNOWFALL AMOUNTS OF 2 TO 4
INCHES ARE EXPECTED IN THE WATCH AREA...AND THIS COMBINED WITH THE
STRONG WINDS COULD PRODUCE BLIZZARD CONDITIONS WITH VERY LOW
VISIBILITY...AND NEAR WHITEOUT CONDITIONS AT TIMES OF FALLING
SNOW.  WIND CHILLS WILL ALSO DROP TO 15 BELOW TO 25 BELOW ON
SUNDAY AS ACTUAL TEMPERATURES FALL TO NEAR ZERO BY LATE SUNDAY
AFTERNOON.

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY
DANGEROUS.

$$

CHAPMAN
000 
WWUS43 KFSD 132201
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
401 PM CST SAT DEC 13 2008

.AN AREA OF LOW PRESSURE WILL RAPIDLY MOVE FROM EASTERN WYOMING INTO THE
NORTHERN PLAINS BY SUNDAY MORNING. A STRONG COLD FRONT ASSOCIATED
WITH THIS AREA OF LOW PRESSURE WILL SWEEP ACROSS THE REGION
TONIGHT. STRONG NORTHWEST WINDS WILL DRAW ARCTIC AIR SOUTHWARD BEHIND THE
FRONT CAUSING THE MERCURY TO PLUMMET DURING THE DAY ON SUNDAY. THE STRONG
WINDS WILL REMAIN ACROSS THE AREA THROUGHOUT THE DAY ON SUNDAY BEFORE
GRADUALLY DIMINISHING SUNDAY NIGHT INTO MONDAY. ALONG WITH THE
STRONG WINDS...SNOW WILL SPREAD FROM WEST TO EAST ON SUNDAY
CREATING BLIZZARD CONDITIONS...ESPECIALLY NORTH AND WEST OF A
LINE FROM WAGNER SOUTH DAKOTA TO MARSHALL MINNESOTA. THE WINDS
WILL ALSO CREATE BITTERLY COLD WIND CHILLS OF 20 TO 35 DEGREES
BELOW ZERO.

SDZ038-050-052-053-057>059-063-064-140615-
/O.UPG.KFSD.BZ.A.0002.081214T0900Z-081215T0600Z/
/O.NEW.KFSD.BZ.W.0003.081214T0600Z-081215T0600Z/
BEADLE-GREGORY-JERAULD-SANBORN-BRULE-AURORA-DAVISON-CHARLES MIX-
DOUGLAS-
INCLUDING THE CITIES OF...HURON...GREGORY...BURKE...
WESSINGTON SPRINGS...ALPENA...WOONSOCKET...CHAMBERLAIN...
KIMBALL...PLANKINTON...WHITE LAKE...STICKNEY...MITCHELL...
WAGNER...PLATTE...LAKE ANDES...MARTY...ARMOUR...CORSICA...DELMONT
401 PM CST SAT DEC 13 2008

...BLIZZARD WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO MIDNIGHT
CST SUNDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO MIDNIGHT
CST SUNDAY NIGHT. THE BLIZZARD WATCH IS NO LONGER IN EFFECT. 

STRONG NORTHERLY WINDS OF 30 TO 40 MPH ARE LIKELY LATE TONIGHT
INTO SUNDAY EVENING. SNOW WILL DEVELOP ACROSS THE AREA LATE
TONIGHT AND CONTINUE DURING THE DAY ON SUNDAY. SNOWFALL AMOUNTS OF
4 TO 7 INCHES ARE EXPECTED ACROSS THE AREA...WITH THE HEAVIEST
AMOUNTS ACROSS CENTRAL SOUTH DAKOTA IN THE MISSOURI RIVER BASIN.
THIS SNOWFALL ALONG WITHE THE VERY STRONG NORTHWEST WINDS WILL
CREATE WHITE OUT CONDITIONS. TRAVEL IS NOT ADVISED WITHIN THE
WARNED AREA. AS THE TEMPERATURE FALLS DURING THE DAY SUNDAY...WIND
CHILL READINGS WILL FALL TO 20 TO 30 DEGREES BELOW ZERO BY SUNDAY
AFTERNOON. 

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.

$$

SDZ039-040-054>056-060-140615-
/O.UPG.KFSD.BZ.A.0002.081214T0900Z-081215T0600Z/
/O.NEW.KFSD.BZ.W.0003.081214T0900Z-081215T0600Z/
KINGSBURY-BROOKINGS-MINER-LAKE-MOODY-HANSON-
INCLUDING THE CITIES OF...DE SMET...ARLINGTON...LAKE PRESTON...
BROOKINGS...HOWARD...MADISON...FLANDREAU...ALEXANDRIA...EMERY
401 PM CST SAT DEC 13 2008

...BLIZZARD WARNING IN EFFECT FROM 3 AM SUNDAY TO MIDNIGHT CST
SUNDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT FROM 3 AM SUNDAY TO MIDNIGHT CST
SUNDAY NIGHT. THE BLIZZARD WATCH IS NO LONGER IN EFFECT. 

STRONG NORTHERLY WINDS OF 30 TO 40 MPH WILL DEVELOP LATE TONIGHT
INTO SUNDAY EVENING. SNOW WILL MOVE INTO THE AREA LATE TONIGHT AND
CONTINUE DURING THE DAY ON SUNDAY. SNOWFALL AMOUNTS OF 2 TO 5
INCHES ARE EXPECTED...WITH HEAVIEST AMOUNTS EXTENDING FROM
ALEXANDRIA TO DE SMET. THIS SNOW COMBINED WITH THE STRONG WINDS WILL
PRODUCE BLIZZARD CONDITIONS WITH VERY LOW VISIBILITIES...AND NEAR
WHITEOUT CONDITIONS. TRAVEL IS NOT ADVISED. AS THE TEMPERATURE FALLS DURING THE DAY SUNDAY...WIND
CHILL READINGS WILL FALL TO 20 TO 30 DEGREES BELOW ZERO BY EARLY SUNDAY
EVENING.

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.

$$

MNZ071-072-140615-
/O.UPG.KFSD.BZ.A.0002.081214T1200Z-081215T0600Z/
/O.NEW.KFSD.BZ.W.0003.081214T1200Z-081215T0600Z/
LINCOLN-LYON-
INCLUDING THE CITIES OF...TYLER...HENDRICKS...LAKE BENTON...
IVANHOE...MARSHALL
401 PM CST SAT DEC 13 2008

...BLIZZARD WARNING IN EFFECT FROM 6 AM SUNDAY TO MIDNIGHT CST
SUNDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT FROM 6 AM SUNDAY TO MIDNIGHT CST
SUNDAY NIGHT. THE BLIZZARD WATCH IS NO LONGER IN EFFECT. 

STRONG NORTHERLY WINDS OF 30 TO 40 MPH WILL DEVELOP
EARLY SUNDAY MORNING. A BRIEF PERIOD OF LIGHT FREEZING RAIN IS
POSSIBLE LATE TONIGHT...BEFORE SNOW SPREADS ACROSS THE AREA ON
SUNDAY. SNOWFALL SHOULD BEING TO WIND DOWN SUNDAY NIGHT WITH A
TOTAL ACCUMULATION OF TWO TO FOUR INCHES. THIS SNOWFALL COMBINED WITH THE
VERY STRONG WINDS WILL PRODUCE BLIZZARD CONDITIONS WITH VERY LOW
VISIBILITIES AND NEAR WHITEOUT CONDITIONS. TRAVEL IS NOT ADVISED. AS THE
TEMPERATURE FALLS DURING THE DAY SUNDAY...WIND CHILL READINGS WILL
FALL TO 15 TO 25 DEGREES BELOW ZERO.

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.

$$

SDZ061-140615-
/O.UPG.KFSD.BZ.A.0002.081214T0900Z-081215T0600Z/
/O.NEW.KFSD.WW.Y.0013.081214T0900Z-081215T0000Z/
MCCOOK-
INCLUDING THE CITIES OF...SALEM...CANISTOTA...BRIDGEWATER...
MONTROSE
401 PM CST SAT DEC 13 2008

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM TO 6 PM CST
SUNDAY...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN
EFFECT FROM 3 AM TO 6 PM CST SUNDAY. THE BLIZZARD WATCH IS NO
LONGER IN EFFECT.

STRONG NORTHERLY WINDS OF 30 TO 40 MPH WILL DEVELOP EARLY SUNDAY
MORNING AND CONTINUE INTO SUNDAY NIGHT. A BRIEF PERIOD OF LIGHT
FREEZING RAIN IS POSSIBLE EARLY SUNDAY MORNING...BEFORE SNOW
SPREADS ACROSS THE AREA. SNOW IS EXPECT TO FALL THROUGHOUT THE DAY
ON SUNDAY...AND BEGIN TO WIND DOWN SUNDAY NIGHT. TOTAL
ACCUMULATIONS ARE EXPECTED TO BE AROUND THREE INCHES. THIS SNOWFALL COMBINED
WITH THE STRONG WINDS WILL CREATE AREAS OF REDUCED VISIBILITY AND
BLOWING AND DRIFTING SNOW. AS THE
TEMPERATURE FALLS DURING THE DAY SUNDAY...WIND CHILL READINGS WILL
FALL TO 15 TO 25 DEGREES BELOW ZERO.


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.

$$

MNZ080-097-140615-
/O.UPG.KFSD.BZ.A.0002.081214T1200Z-081215T0600Z/
/O.NEW.KFSD.WW.Y.0013.081214T0900Z-081215T0000Z/
MURRAY-PIPESTONE-
INCLUDING THE CITIES OF...SLAYTON...FULDA...PIPESTONE
401 PM CST SAT DEC 13 2008

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM TO 6 PM CST
SUNDAY...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM 3 AM TO 6 PM CST SUNDAY. THE BLIZZARD WATCH IS NO LONGER IN
EFFECT. 

STRONG NORTHERLY WINDS OF 30 TO 40 MPH WILL DEVELOP EARLY SUNDAY
MORNING AND CONTINUE INTO SUNDAY NIGHT. A BRIEF PERIOD OF LIGHT
FREEZING RAIN IS POSSIBLE EARLY SUNDAY MORNING...BEFORE SNOW
SPREADS ACROSS THE AREA. SNOW IS EXPECT TO FALL THROUGHOUT THE DAY
ON SUNDAY...AND GRADUALLY COME TO AN END SUNDAY NIGHT. TOTAL
ACCUMULATIONS ARE EXPECTED TO RANGE FROM ONE TO THREE INCHES. THIS
SNOWFALL COMBINED WITH THE STRONG WINDS WILL CREATE AREAS OF
REDUCED VISIBILITY AND BLOWING AND DRIFTING SNOW. AS THE
TEMPERATURE FALLS DURING THE DAY SUNDAY...WIND CHILL READINGS WILL
FALL TO 15 TO 25 DEGREES BELOW ZERO.

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.

$$

IAZ001-012-020-MNZ089-098-NEZ013-SDZ062-065>071-140615-
/O.NEW.KFSD.WW.Y.0013.081214T0900Z-081215T0000Z/
LYON-SIOUX-PLYMOUTH-NOBLES-ROCK-DIXON-MINNEHAHA-HUTCHINSON-TURNER-
LINCOLN-BON HOMME-YANKTON-CLAY-UNION-
INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD...
LARCHWOOD...ORANGE CITY...SIOUX CENTER...LE MARS...WORTHINGTON...
LUVERNE...WAKEFIELD...PONCA...ALLEN...SIOUX FALLS...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
401 PM CST SAT DEC 13 2008

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM TO 6 PM CST
SUNDAY...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM 3 AM TO 6 PM CST SUNDAY. 

STRONG NORTHERLY WINDS OF 30 TO 40 MPH WILL DEVELOP EARLY SUNDAY
MORNING AND CONTINUE INTO SUNDAY NIGHT. A BRIEF PERIOD OF LIGHT
FREEZING RAIN IS POSSIBLE EARLY SUNDAY MORNING...BEFORE SNOW
SPREADS ACROSS THE AREA. SNOW IS EXPECT TO FALL THROUGHOUT THE DAY
ON SUNDAY...AND GRADUALLY COME TO AN END SUNDAY EVENING. TOTAL
ACCUMULATIONS ARE EXPECTED TO RANGE FROM ONE TO THREE INCHES. THIS
SNOWFALL COMBINED WITH THE STRONG WINDS WILL CREATE AREAS OF
REDUCED VISIBILITY AND BLOWING AND DRIFTING SNOW. AS THE
TEMPERATURE FALLS DURING THE DAY SUNDAY...WIND CHILL READINGS WILL
FALL TO 15 TO 25 DEGREES BELOW ZERO.

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.

$$

IAZ002-003-013-MNZ081-090-140615-
/O.NEW.KFSD.WW.Y.0013.081214T1200Z-081215T0000Z/
OSCEOLA-DICKINSON-OBRIEN-COTTONWOOD-JACKSON-
INCLUDING THE CITIES OF...SIBLEY...SPIRIT LAKE...MILFORD...
ARNOLDS PARK...SHELDON...HARTLEY...SANBORN...WINDOM...
MOUNTAIN LAKE...JACKSON...LAKEFIELD
401 PM CST SAT DEC 13 2008

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM TO 6 PM CST
SUNDAY...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM 6 AM TO 6 PM CST SUNDAY. 

STRONG NORTHERLY WINDS OF 30 TO 40 MPH WILL DEVELOP EARLY SUNDAY
MORNING AND CONTINUE INTO SUNDAY NIGHT. A BRIEF PERIOD OF LIGHT
FREEZING RAIN IS POSSIBLE EARLY SUNDAY MORNING...BEFORE SNOW
SPREADS ACROSS THE AREA. SNOW IS EXPECT TO FALL THROUGHOUT THE DAY
ON SUNDAY...AND GRADUALLY COME TO AN END SUNDAY EVENING. TOTAL
ACCUMULATIONS ARE EXPECTED TO RANGE FROM ONE TO THREE INCHES. THIS
SNOWFALL COMBINED WITH THE STRONG WINDS WILL CREATE AREAS OF
REDUCED VISIBILITY AND BLOWING AND DRIFTING SNOW. AS THE
TEMPERATURE FALLS DURING THE DAY SUNDAY...WIND CHILL READINGS WILL
FALL TO 15 TO 20 DEGREES BELOW ZERO.

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.

$$
BT

What forecasters said that day

The local office's own words before this blizzard watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Sioux Falls, SD wrote its last area forecast discussion before this blizzard watch went out at Dec 11, 9:05 PM CST, 6 hours 20 minutes earlier.

Area forecast discussion, Dec 11, 9:05 PM CST, 6 hours 20 minutes before
AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
905 PM CST THU DEC 11 2008

.DISCUSSION...
ARCTIC AIR BLEEDING SWD BEHIND CDFNT NOW FM ABT HON TO FSD TO SPW...
AND WILL AFFECT NERN THIRD CWA REST OF TNGT WITH COLDER TEMPS THAN
PREV FCST...BY AT LEAST 5 DEGS. SWRN HLF CWA MORE AFFECTED BY RETURN
WSWLY FLOW OF RATHER MILD AIR AND UPPD LOWS SOME IN THIS AREA. SCT
-SHSN DCRG...WITH FIRST WEAKENING BATCH MOVG THRU NWRN IA...AND
ANOTHER MOVG SEWD THRU NRN CWA. SO KEPT SOME MOVG THRU MOSTLY ERN
HLF CWA TNGT WHERE ALSO UPPD NLY WINDS WITH COLD ADVECTION.

RYRHOLM
&&

.AVIATION...
MVFR CIGS WITH SPOTTY MVFR/BRIEF IFR VSBYS WITH SNOW SHWRS WL
CONTINUE INTO THE NIGHT MAINLY ON THE COLD SIDE OF BNDRY SINKING
SLOWLY SWRD FROM NR KBIS TO KFSD TO KSPW...AND EXPECTED TO STALL
ABOUT 30-50NM S OF THIS LINE BY 09-12Z. SPOTTY MVFR/CIGS VSBYS
EXPECTED TO END 03-04Z ARND KSUX AHEAD OF BNDRY. SOME MVFR CIGS
WILL LINGER TO 12/15Z OR A LTL LATER MAINLY NE OF KFSD...WITH
VFR CONDITIONS EXPECTED AFTER THIS TIME.

CHAPMAN
&&

.PREV DISCUSSION...
LGT SNOW SHWRS STILL TARGETING FAR NRN/NERN FCST AREA FOR TNGT.
THESE SHUD SPREAD INTO AREA THIS EVE...THEN LATE TNGT DCRS FROM THE
W. ANY ACCUM SHUD BE QUITE LGT. HAVE MENTND FLRYS FOR LATR TNGT DOWN
TO THE FSD/SLB AREAS. ASIDE FROM CURNT MAINLY MID BASED SNOW
SHWRS...MODELS SEEM REASNBL IN DVLPG SC/ST DECK DOOWN INTO NRN/ERN
FCST AREA TNGT AND THERE CUD BE A FEW FLRYS WITH THIS AS WELL.
BASICALLY...AS BUBBLE SFC HIGH MOVES SEWD JUST TO THE N/E OF FCST
AREA AND PUMPS SOME LO LVL COLD AIR INTO OUR NERN FCST AREA...IT
WILL SET UP A GOOD LO LVL BOUNDRY FVRBL FOR THIS LO CLOUD BAND. THIS
SHUD ALSO BEGIN TO MOVE NEWD/EWD BY 12Z AS BOUNDRY STARTS MOVING
THAT WAY AS A WARM FRONT. MEANWHILE...LEFTOVER LGT SHWRS CLOSE TO
SWRN CRNR OF FCST AREA ARE LOOKING WIMPIER BUT WILL LEAVE SLGT CHC
SWRN CRNR INTO THIS EVE.

TEMPS WILL DROP TO RELTVLY MILD LVLS XCP FOR THAT COLDER WEDGE BEING
PUMPED INTO THE NERN FCST AREA. GUIDNCE LOOKS FAIRLY GOOD.

FRIDAY WILL BE A TRICKY TEMPERATURE DAY WITH SOME COLD LOW LEVEL AIR
TO WORK OVER IN THE EAST. EXPECT THIS TO HAPPEN BY LATE MORNING WITH
A STRONG SOUTHERLY GRADIENT DEVELOPING. HIGHS WILL BE SIMILAR TO
TODAY WITH UPPER 20S IN SW MN AND LOWER 40S IN SC SD.

FRIDAY NIGHT WILL BE MILD...AT LEAST FOR THIS TIME OF YEAR...WITH AN
INCREASING SOUTH WIND. WILL AIM FOR LOWS IN THE 20S...POSSIBLY CLOSE
TO 30 NEAR THE MO RIVER.

SATURDAY WILL BE WINDY AND MILD AS LOW PRESSURE DEEPENS TO THE
SOUTHWEST OF THE AREA. CLOUDS SHOULD BE ON THE INCREASE THROUGHOUT
THE DAY WITH THE POTENTIAL FOR STRATUS. THE 925MB TEMPERATURE WILL
CLIMB INTO THE SINGLE DIGITS ABOVE ZERO...AND WITH LITTLE OR NO SNOW
COVER IN SC SD...COULD APPROACH 50 IF CLOUD COVER IS NOT TOO THINK.

UPPER LEVEL SUPPORT STARTS TO SNEAK ONTO THE PLAINS SATURDAY NIGHT
WITH THE COLD AIR COLLAPSING DOWN THE WESTERN HIGH PLAINS. THE
BETTER MID LEVEL THERMAL BANDING QUITE A WAYS TO THE NORTH AND WEST
OF THE CWA...SO WILL ONLY INCLUDE LOW POPS FOR THIS TIME PERIOD WITH
THE BETTER CHANCES IN CENTRAL SD LATE.

SYSTEM FOR SUNDAY STILL ON TRACK TO PRODUCE MODERATE TO HEAVY SNOW
TO THE NORTH OF THE AREA. THE 0Z GFS AND ALL OF ITS MEMBERS PLACE
THE AXIS OF HEAVIEST SNOW WELL NORTH OF THE CWA AND THE 6Z GFS AS
WELL AS THE 12Z GFS ALSO AGREE WITH THIS. EC AND CANADIAN ALSO ON
BOARD WITH THIS SOLUTION. THE ONLY OUTLIER IS...AS USUAL...THE NAM.
IT PLASTERS THE CWA WITH ABOUT A HALF TO THREE QUARTERS OF AN INCH
OF QPF. SO...WHILE WE WILL LIKELY SEE SOME PRECIPITATION ON SUNDAY
INTO SUNDAY NIGHT...NOT PLANNING ON ANY BIG ACCUMULATIONS AND WILL
IGNORE THE NAM AND SIDE WITH THE EC/GFS/CANADIAN.

IN THE LATTER PERIODS(MON-THU)...THE MAIN STORY DURING THIS TIME
FRAME WILL BE COLD. WITH THE MODERATE TO SIGNIFICANT SNOWS EXPECTED
TO REMAIN NORTH OF THE AREA...THE INCOMING ARCTIC BLAST WILL HAVE A
LITTLE LESS PUNCH...BUT IS STILL EXPECTED TO BE COLD. MONDAY LOOKS
LIKE THE COLDEST DAY WITH GOOD AGREEMENT ON COLD AIR SURGE. LAST
COUPLE OF RUNS OF BOTH GFS AND EC SUGGEST -20 TO -25 DEGREES C AT
925MB...WHICH WILL LIKELY TRANSLATE TO TEMPERATURES IN THE SINGLE
DIGITS. ALONG WITH NORTHWEST WINDS OF 15 TO 25 MPH...WIND CHILL
VALUES WILL LIKELY BE IN THE TEENS AND 20S BELOW ZERO. AFTER
THIS...THE MODELS START HAVING A LITTLE TROUBLE DEALING WITH THE
COLD HIGH PRESSURE LEAKING DOWN THE WESTERN HIGH PLAINS. IN
GENERAL...WILL CONTINUE TO SIDE WITH COLDEST GUIDANCE...ESPECIALLY
WITH THE MEN CONTINUING BELOW THE MEX GUIDANCE WITH RELATIVELY HIGH
STANDARD DEVIATIONS. WILL ADD A CHANCE FOR SNOW INTO THE WEDNESDAY
AND WEDNESDAY NIGHT TIME FRAME AS MODELS ARE HINTING AT THE
POTENTIAL FOR A FAIRLY STRONG JET STREAK TO PASS THROUGH NEBRASKA
INTO IOWA DURING THIS TIME.

&&

.FSD WATCHES/WARNINGS/ADVISORIES...
IA...NONE.
MN...NONE.
NE...NONE.
SD...NONE.

&&
Hazardous weather outlook, Dec 11, 3:43 PM CST, 11 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
343 PM CST THU DEC 11 2008

SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-
IAZ001>003-012>014-020>022-031-032-NEZ013-014-121200-
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-
343 PM CST THU DEC 11 2008

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

.DAY ONE...TODAY AND TONIGHT

WINTER WEATHER...
A FEW SNOW SHOWERS ARE POSSIBLE THIS AFTERNOON INTO EARLY EVENING
IN THE CHAMBERLAIN TO PICKSTOWN TO GREGORY AREA. ANY
ACCUMULATIONS SHOULD BE LESS THAN ONE INCH. SPOTTY SNOW SHOWERS
ARE ALSO POSSIBLE THIS AFTERNOON AND TONIGHT IN SOUTHWEST
MINNESOTA WEST TO THE BROOKINGS AND DE SMET AREAS. ANY
ACCUMULATIONS IN THIS AREA SHOULD ALSO BE LESS THAN ONE INCH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY
SNOW WILL DEVELOP OVER CENTRAL PARTS OF NEBRASKA AND SOUTH DAKOTA
ON SUNDAY AND SPREAD NORTH IN THE AFTERNOON. A FEW
LOCATIONS...MAINLY FROM CHAMBERLAIN TO HURON TO BROOKINGS...COULD
RECEIVE 2 TO 4 INCHES. BY SUNDAY AFTERNOON...ARCTIC AIR WILL POUR
IN ON A STRONG NORTHWEST WIND. WIND CHILL VALUES SUNDAY NIGHT
INTO MONDAY WILL RANGE FROM 15 BELOW ZERO TO 25 BELOW ZERO.

.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.

Nearby

Blizzard Watches in South Dakota, 2008Blizzard Watches in Minnesota, 2008Every blizzard watch in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.