Alert archive / Minnesota / Wind Chill Warnings in 2008
Wind Chill Warning 6, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this wind chill warning at Dec 21, 2008, 3:45 AM CST for 7 counties in Minnesota; Dickinson County, Osceola County, Iowa. It took effect at Dec 21, 2008, 3:00 PM CST. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Dec 21, 2008, 3:45 AM CST (09:45 UTC)
- In effect from
- Dec 21, 2008, 3:00 PM CST
- Expired
- Dec 21, 2008, 9:00 PM CST
- In force
- 6 hr
- Issued by
- NWS Sioux Falls, SD
Counties Dickinson County, IA, Osceola County, IA, Cottonwood County, MN, Jackson County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN
The radar
The Sioux Falls radar (KFSD), 92 km from the middle of the area, began a volume at 10:00 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 9.8 hours before the alert went out and 196 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 798 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- -45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS43 KFSD 210945 WSWFSD URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SIOUX FALLS SD 345 AM CST SUN DEC 21 2008 .STRONG NORTHWEST WINDS WILL CONTINUE TO PRODUCE BLIZZARD CONDITIONS...DUE TO BLOWING SNOW...IN OPEN AREAS TODAY...MAINLY ALONG AND EAST OF INTERSTATE 29. THESE STRONG WINDS WILL ALSO PRODUCE BITTERLY COLD WIND CHILLS OF 25 BELOW TO 40 BELOW ACROSS THE ENTIRE AREA TODAY...WITH THE WIND GRADUALLY BECOMING LIGHT AND VARIABLE ACROSS THE REGION TONIGHT. SDZ039-040-054>056-061-062-066-067-211745- /O.CAN.KFSD.BZ.W.0004.000000T0000Z-081221T1800Z/ /O.EXB.KFSD.WC.W.0005.000000T0000Z-081222T0600Z/ KINGSBURY-BROOKINGS-MINER-LAKE-MOODY-MCCOOK-MINNEHAHA-TURNER- LINCOLN- INCLUDING THE CITIES OF...DE SMET...ARLINGTON...LAKE PRESTON... BROOKINGS...HOWARD...MADISON...FLANDREAU...SALEM...CANISTOTA... BRIDGEWATER...MONTROSE...SIOUX FALLS...PARKER...CENTERVILLE... MARION...VIBORG...HURLEY...CHANCELLOR...CANTON...LENNOX...TEA... HARRISBURG 345 AM CST SUN DEC 21 2008 ...WIND CHILL WARNING IN EFFECT UNTIL MIDNIGHT CST TONIGHT... ...BLIZZARD WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WIND CHILL WARNING...WHICH IS IN EFFECT UNTIL MIDNIGHT CST TONIGHT. THE BLIZZARD WARNING HAS BEEN CANCELLED. STRONG NORTHWEST WINDS OF 25 TO 35 MPH WILL PRODUCE BITTERLY COLD WIND CHILLS OF 30 BELOW TO 40 BELOW TODAY. THE WINDS WILL GRADUALLY DECREASE THIS EVENING...HOWVER...WIND CHILLS WILL REMAIN NEAR 30 BELOW THROUGH MIDNIGHT. THE WINDS SHOULD BECOME LIGHT AND VARIABLE AFTER MIDNIGHT. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$ IAZ002-003-MNZ071-072-080-081-089-090-097-211745- /O.NEW.KFSD.WC.W.0006.081221T2100Z-081222T0600Z/ /O.CON.KFSD.BZ.W.0004.000000T0000Z-081221T2100Z/ OSCEOLA-DICKINSON-LINCOLN-LYON-MURRAY-COTTONWOOD-NOBLES-JACKSON- PIPESTONE- INCLUDING THE CITIES OF...SIBLEY...SPIRIT LAKE...MILFORD... ARNOLDS PARK...TYLER...HENDRICKS...LAKE BENTON...IVANHOE... MARSHALL...SLAYTON...FULDA...WINDOM...MOUNTAIN LAKE... WORTHINGTON...JACKSON...LAKEFIELD...PIPESTONE 345 AM CST SUN DEC 21 2008 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 3 PM CST THIS AFTERNOON... ...WIND CHILL WARNING IN EFFECT FROM 3 PM THIS AFTERNOON TO MIDNIGHT CST TONIGHT... THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WIND CHILL WARNING...WHICH IS IN EFFECT FROM 3 PM THIS AFTERNOON TO MIDNIGHT CST TONIGHT. A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 3 PM CST THIS AFTERNOON. STRONG NORTHWEST WINDS OF 25 TO 40 MPH WILL CONTINUE ACROSS THE AREA TODAY. THESE STRONG WINDS WILL COMBINE WITH FRESH SNOW COVER...TO PRODUCE BLIZZARD CONDITIONS IN OPEN AREAS TODAY. THESE STRONG WINDS WILL ALSO PRODUCE BITTERLY COLD WIND CHILLS OF 30 BELOW TO 40 BELOW THROUGH THIS EVENING. THE WIND SHOULD BECOME LIGHT AND VARIABLE AFTER MIDNIGHT. A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$ IAZ001-012>014-020>022-031-032-MNZ098-NEZ013-014-SDZ070-071- 211745- /O.EXB.KFSD.WC.W.0005.081221T1800Z-081222T0600Z/ /O.CON.KFSD.BZ.W.0004.000000T0000Z-081221T1800Z/ LYON-SIOUX-OBRIEN-CLAY-PLYMOUTH-CHEROKEE-BUENA VISTA-WOODBURY-IDA- ROCK-DIXON-DAKOTA-UNION- INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD... LARCHWOOD...ORANGE CITY...SIOUX CENTER...SHELDON...HARTLEY... SANBORN...SPENCER...LE MARS...CHEROKEE...STORM LAKE... SIOUX CITY...IDA GROVE...HOLSTEIN...BATTLE CREEK...LUVERNE... WAKEFIELD...PONCA...ALLEN...SOUTH SIOUX CITY...VERMILLION... NORTH SIOUX CITY...BERESFORD...ELK POINT...ALCESTER...JEFFERSON 345 AM CST SUN DEC 21 2008 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY... ...WIND CHILL WARNING IN EFFECT FROM NOON TODAY TO MIDNIGHT CST TONIGHT... THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WIND CHILL WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO MIDNIGHT CST TONIGHT. A BLIZZARD WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY. STRONG NORTHWEST WINDS OF 25 TO 35 MPH WILL CONTINUE ACROSS THE AREA TODAY. THESE STRONG WINDS WILL COMBINE WITH FRESH SNOW COVER...TO PRODUCE BLIZZARD CONDITIONS IN OPEN AREAS THIS MORNING. THESE STRONG WINDS WILL ALSO PRODUCE BITTERLY COLD WIND CHILLS OF 25 BELOW TO 40 BELOW THROUGH THIS EVENING. THE WIND SHOULD BECOME LIGHT AND VARIABLE AFTER MIDNIGHT. 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. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$ SDZ038-050-052-053-057>060-063>065-068-069-211745- /O.EXT.KFSD.WC.W.0005.000000T0000Z-081222T0000Z/ BEADLE-GREGORY-JERAULD-SANBORN-BRULE-AURORA-DAVISON-HANSON- CHARLES MIX-DOUGLAS-HUTCHINSON-BON HOMME-YANKTON- INCLUDING THE CITIES OF...HURON...GREGORY...BURKE... WESSINGTON SPRINGS...ALPENA...WOONSOCKET...CHAMBERLAIN... KIMBALL...PLANKINTON...WHITE LAKE...STICKNEY...MITCHELL... ALEXANDRIA...EMERY...WAGNER...PLATTE...LAKE ANDES...MARTY... ARMOUR...CORSICA...DELMONT...PARKSTON...FREEMAN...MENNO...TRIPP... TYNDALL...SCOTLAND...SPRINGFIELD...AVON...TABOR...YANKTON 345 AM CST SUN DEC 21 2008 ...WIND CHILL WARNING NOW IN EFFECT UNTIL 6 PM CST THIS AFTERNOON... THE WIND CHILL WARNING IS NOW IN EFFECT UNTIL 6 PM CST THIS AFTERNOON. STRONG NORTHWEST WINDS OF 25 TO 35 MPH WILL PRODUCE BITTERLY COLD WIND CHILLS OF 30 BELOW TO 40 BELOW TODAY. THE WINDS WILL BECOME LIGHT AND VARIABLE DURING THE EVENING. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$
4 follow-up statements
000 WWUS43 KFSD 211738 WSWFSD URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SIOUX FALLS SD 1138 AM CST SUN DEC 21 2008 .STRONG NORTHWEST WINDS WILL CONTINUE TO PRODUCE BLIZZARD CONDITIONS DUE TO BLOWING SNOW...MAINLY IN OPEN AREAS THIS AFTERNOON...ACROSS SOUTHWEST MINNESOTA AND PARTS OF NORTHWEST IOWA. THESE STRONG WINDS WILL ALSO PRODUCE BITTERLY COLD WIND CHILLS OF 25 BELOW TO 40 BELOW ACROSS THE ENTIRE REGION THROUGH THIS AFTERNOON...WITH THE WIND GRADUALLY BECOMING LIGHT AND VARIABLE ACROSS THE REGION LATER TONIGHT. IAZ001-012>014-020>022-031-032-MNZ098-NEZ013-014-SDZ070-071- 220145- /O.EXP.KFSD.BZ.W.0004.000000T0000Z-081221T1800Z/ /O.CON.KFSD.WC.W.0005.081221T1800Z-081222T0600Z/ LYON-SIOUX-OBRIEN-CLAY-PLYMOUTH-CHEROKEE-BUENA VISTA-WOODBURY-IDA- ROCK-DIXON-DAKOTA-UNION- INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD... LARCHWOOD...ORANGE CITY...SIOUX CENTER...SHELDON...HARTLEY... SANBORN...SPENCER...LE MARS...CHEROKEE...STORM LAKE... SIOUX CITY...IDA GROVE...HOLSTEIN...BATTLE CREEK...LUVERNE... WAKEFIELD...PONCA...ALLEN...SOUTH SIOUX CITY...VERMILLION... NORTH SIOUX CITY...BERESFORD...ELK POINT...ALCESTER...JEFFERSON 1138 AM CST SUN DEC 21 2008 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... ...BLIZZARD WARNING WILL EXPIRE AT NOON CST TODAY... THE BLIZZARD WARNING WILL EXPIRE AT NOON CST TODAY. A WIND CHILL WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT. STRONG NORTHWEST WINDS OF 20 TO 35 MPH WILL CONTINUE ACROSS THE AREA THIS AFTERNOON. THESE STRONG WINDS WILL CONTINUE TO PRODUCE BLOWING SNOW THIS AFTERNOON...WITH VISIBILITIES OCCASIONALLY DROPPING TO 1 TO 3 MILES. THE STRONG WINDS WILL ALSO PRODUCE BITTERLY COLD WIND CHILLS OF 25 BELOW TO 40 BELOW INTO THIS EVENING. THE WIND SHOULD BECOME LIGHT AND VARIABLE AFTER MIDNIGHT. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$ IAZ002-003-MNZ071-072-080-081-089-090-097-220145- /O.CON.KFSD.BZ.W.0004.000000T0000Z-081221T2100Z/ /O.CON.KFSD.WC.W.0006.081221T2100Z-081222T0600Z/ OSCEOLA-DICKINSON-LINCOLN-LYON-MURRAY-COTTONWOOD-NOBLES-JACKSON- PIPESTONE- INCLUDING THE CITIES OF...SIBLEY...SPIRIT LAKE...MILFORD... ARNOLDS PARK...TYLER...HENDRICKS...LAKE BENTON...IVANHOE... MARSHALL...SLAYTON...FULDA...WINDOM...MOUNTAIN LAKE... WORTHINGTON...JACKSON...LAKEFIELD...PIPESTONE 1138 AM CST SUN DEC 21 2008 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 3 PM CST THIS AFTERNOON... ...WIND CHILL WARNING REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO MIDNIGHT CST TONIGHT... A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 3 PM CST THIS AFTERNOON. A WIND CHILL WARNING REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO MIDNIGHT CST TONIGHT. STRONG NORTHWEST WINDS OF 25 TO 40 MPH WILL CONTINUE ACROSS THE AREA THROUGH THIS AFTERNOON. THESE STRONG WINDS WILL COMBINE WITH FRESH SNOW COVER TO PRODUCE BLIZZARD CONDITIONS IN OPEN AREAS. VISIBILITIES IN BLOWING SNOW WILL OCCASIONALLY BE LESS THAN 1/2 MILE. THE STRONG WINDS WILL ALSO PRODUCE BITTERLY COLD WIND CHILLS OF 30 BELOW TO 40 BELOW INTO THIS EVENING. THE WIND SHOULD BECOME LIGHT AND VARIABLE AFTER MIDNIGHT. A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$ SDZ038-050-052-053-057>060-063>065-068-069-220000- /O.CON.KFSD.WC.W.0005.000000T0000Z-081222T0000Z/ BEADLE-GREGORY-JERAULD-SANBORN-BRULE-AURORA-DAVISON-HANSON- CHARLES MIX-DOUGLAS-HUTCHINSON-BON HOMME-YANKTON- INCLUDING THE CITIES OF...HURON...GREGORY...BURKE... WESSINGTON SPRINGS...ALPENA...WOONSOCKET...CHAMBERLAIN... KIMBALL...PLANKINTON...WHITE LAKE...STICKNEY...MITCHELL... ALEXANDRIA...EMERY...WAGNER...PLATTE...LAKE ANDES...MARTY... ARMOUR...CORSICA...DELMONT...PARKSTON...FREEMAN...MENNO...TRIPP... TYNDALL...SCOTLAND...SPRINGFIELD...AVON...TABOR...YANKTON 1138 AM CST SUN DEC 21 2008 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS AFTERNOON... A WIND CHILL WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS AFTERNOON. STRONG NORTHWEST WINDS OF 20 TO 35 MPH WILL PRODUCE BITTERLY COLD WIND CHILLS OF 30 BELOW TO 40 BELOW THROUGH THIS AFTERNOON. THE WINDS WILL BECOME LIGHT AND VARIABLE DURING THE EVENING. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$ SDZ039-040-054>056-061-062-066-067-220145- /O.CON.KFSD.WC.W.0005.000000T0000Z-081222T0600Z/ KINGSBURY-BROOKINGS-MINER-LAKE-MOODY-MCCOOK-MINNEHAHA-TURNER- LINCOLN- INCLUDING THE CITIES OF...DE SMET...ARLINGTON...LAKE PRESTON... BROOKINGS...HOWARD...MADISON...FLANDREAU...SALEM...CANISTOTA... BRIDGEWATER...MONTROSE...SIOUX FALLS...PARKER...CENTERVILLE... MARION...VIBORG...HURLEY...CHANCELLOR...CANTON...LENNOX...TEA... HARRISBURG 1138 AM CST SUN DEC 21 2008 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... A WIND CHILL WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT. STRONG NORTHWEST WINDS OF 20 TO 35 MPH WILL PRODUCE BITTERLY COLD WIND CHILLS OF 25 BELOW TO 40 BELOW THROUGH THIS AFTERNOON AND INTO THIS EVENING. THE WINDS WILL GRADUALLY DECREASE LATE THIS EVENING...HOWEVER...WIND CHILLS WILL REMAIN NEAR 20 TO 30 BELOW THROUGH MIDNIGHT. THE WINDS SHOULD BECOME LIGHT AND VARIABLE AFTER MIDNIGHT. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$
000 WWUS43 KFSD 212105 WSWFSD URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SIOUX FALLS SD 305 PM CST SUN DEC 21 2008 .STRONG NORTHWEST WINDS WILL CONTINUE AT 20 TO 30 MPH WITH OCCASIONAL GUSTS TO 35 MPH THROUGH LATE THIS AFTERNOON INTO EARLY EVENING...BEFORE DROPPING OFF TO 5 TO 15 MPH OR LESS BY MIDNIGHT TONIGHT. AREAS OF BLOWING AND DRIFTING SNOW WILL CONTINUE...BUT VISIBILITIES WILL GENERALLY BE GREATER THAN 1 TO 3 MILES THROUGH THIS EVENING. WIND CHILL VALUES WILL GENERALLY BE 20 TO 35 BELOW INTO THIS EVENING...AND WILL NOT BE GETTING ANY WORSE OVERNIGHT DESPITE THE COLD OVERNIGHT LOW TEMPERATURES EXPECTED DUE TO THE LIGHTER WIND SPEEDS. SDZ038-050-052-053-057>060-063>065-068-069-212215- /O.CAN.KFSD.WC.W.0005.000000T0000Z-081222T0000Z/ BEADLE-GREGORY-JERAULD-SANBORN-BRULE-AURORA-DAVISON-HANSON- CHARLES MIX-DOUGLAS-HUTCHINSON-BON HOMME-YANKTON- INCLUDING THE CITIES OF...HURON...GREGORY...BURKE... WESSINGTON SPRINGS...ALPENA...WOONSOCKET...CHAMBERLAIN... KIMBALL...PLANKINTON...WHITE LAKE...STICKNEY...MITCHELL... ALEXANDRIA...EMERY...WAGNER...PLATTE...LAKE ANDES...MARTY... ARMOUR...CORSICA...DELMONT...PARKSTON...FREEMAN...MENNO...TRIPP... TYNDALL...SCOTLAND...SPRINGFIELD...AVON...TABOR...YANKTON 305 PM CST SUN DEC 21 2008 ...WIND CHILL WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS CANCELLED THE WIND CHILL WARNING. WIND SPEEDS HAVE DROPPED TO 15 TO 25 MPH AND WILL CONTINUE TO DECREASE INTO THIS EVENING. WIND CHILL VALUES ARE NOW 15 TO 25 BELOW...AND WILL CONTINUE TO MODERATE. $$ IAZ002-003-MNZ071-072-080-081-089-090-097-220300- /O.EXP.KFSD.BZ.W.0004.000000T0000Z-081221T2100Z/ /O.EXT.KFSD.WC.W.0006.000000T0000Z-081222T0300Z/ OSCEOLA-DICKINSON-LINCOLN-LYON-MURRAY-COTTONWOOD-NOBLES-JACKSON- PIPESTONE- INCLUDING THE CITIES OF...SIBLEY...SPIRIT LAKE...MILFORD... ARNOLDS PARK...TYLER...HENDRICKS...LAKE BENTON...IVANHOE... MARSHALL...SLAYTON...FULDA...WINDOM...MOUNTAIN LAKE... WORTHINGTON...JACKSON...LAKEFIELD...PIPESTONE 305 PM CST SUN DEC 21 2008 ...WIND CHILL WARNING NOW IN EFFECT UNTIL 9 PM CST THIS EVENING... ...BLIZZARD WARNING HAS EXPIRED... THE BLIZZARD WARNING IS NO LONGER IN EFFECT. THE WIND CHILL WARNING IS NOW IN EFFECT UNTIL 9 PM CST THIS EVENING. STRONG NORTHWEST WINDS WILL CONTINUE AT 20 TO 30 MPH WITH OCCASIONAL GUSTS TO 35 MPH THROUGH LATE THIS AFTERNOON INTO EARLY EVENING...BEFORE DROPPING OFF TO 5 TO 15 MPH OR LESS BY MIDNIGHT TONIGHT. AREAS OF BLOWING AND DRIFTING SNOW WILL CONTINUE...BUT VISIBILITIES WILL GENERALLY BE GREATER THAN 1 TO 3 MILES THROUGH THIS EVENING. WIND CHILL VALUES WILL GENERALLY BE 25 TO 35 BELOW INTO THIS EVENING...BUT WILL NOT BE GETTING ANY WORSE OVERNIGHT DESPITE THE COLD OVERNIGHT LOW TEMPERATURES EXPECTED DUE TO THE LIGHTER WIND SPEEDS. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$ SDZ039-040-054>056-061-062-066-067-220000- /O.EXT.KFSD.WC.W.0005.000000T0000Z-081222T0000Z/ KINGSBURY-BROOKINGS-MINER-LAKE-MOODY-MCCOOK-MINNEHAHA-TURNER- LINCOLN- INCLUDING THE CITIES OF...DE SMET...ARLINGTON...LAKE PRESTON... BROOKINGS...HOWARD...MADISON...FLANDREAU...SALEM...CANISTOTA... BRIDGEWATER...MONTROSE...SIOUX FALLS...PARKER...CENTERVILLE... MARION...VIBORG...HURLEY...CHANCELLOR...CANTON...LENNOX...TEA... HARRISBURG 305 PM CST SUN DEC 21 2008 ...WIND CHILL WARNING NOW IN EFFECT UNTIL 6 PM CST THIS AFTERNOON... THE WIND CHILL WARNING IS NOW IN EFFECT UNTIL 6 PM CST THIS AFTERNOON. STRONG NORTHWEST WINDS WILL CONTINUE AT 15 TO 25 MPH WITH OCCASIONAL GUSTS TO 30 MPH THROUGH LATE THIS AFTERNOON...BEFORE DROPPING OFF TO LESS THAN 10 MPH BY MIDNIGHT TONIGHT. AREAS OF BLOWING AND DRIFTING SNOW WILL CONTINUE...BUT VISIBILITIES WILL GENERALLY BE GREATER THAN 2 TO 4 MILES THROUGH THIS AFTERNOON. WIND CHILL VALUES WILL GENERALLY BE 20 TO 30 BELOW INTO EARLY THIS EVENING...BUT WILL NOT BE GETTING ANY WORSE OVERNIGHT DESPITE THE COLD OVERNIGHT LOW TEMPERATURES EXPECTED DUE TO THE LIGHTER WIND SPEEDS. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$ IAZ001-012>014-020>022-031-032-MNZ098-NEZ013-014-SDZ070-071- 220300- /O.EXT.KFSD.WC.W.0005.000000T0000Z-081222T0300Z/ LYON-SIOUX-OBRIEN-CLAY-PLYMOUTH-CHEROKEE-BUENA VISTA-WOODBURY-IDA- ROCK-DIXON-DAKOTA-UNION- INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD... LARCHWOOD...ORANGE CITY...SIOUX CENTER...SHELDON...HARTLEY... SANBORN...SPENCER...LE MARS...CHEROKEE...STORM LAKE... SIOUX CITY...IDA GROVE...HOLSTEIN...BATTLE CREEK...LUVERNE... WAKEFIELD...PONCA...ALLEN...SOUTH SIOUX CITY...VERMILLION... NORTH SIOUX CITY...BERESFORD...ELK POINT...ALCESTER...JEFFERSON 305 PM CST SUN DEC 21 2008 ...WIND CHILL WARNING NOW IN EFFECT UNTIL 9 PM CST THIS EVENING... THE WIND CHILL WARNING IS NOW IN EFFECT UNTIL 9 PM CST THIS EVENING. STRONG NORTHWEST WINDS WILL CONTINUE AT 20 TO 30 MPH WITH OCCASIONAL GUSTS TO 35 MPH THROUGH LATE THIS AFTERNOON INTO EARLY EVENING...BEFORE DROPPING OFF TO 5 TO 15 MPH OR LESS BY MIDNIGHT TONIGHT. AREAS OF BLOWING AND DRIFTING SNOW WILL CONTINUE...BUT VISIBILITIES WILL GENERALLY BE GREATER THAN 1 TO 3 MILES THROUGH THIS EVENING. WIND CHILL VALUES WILL GENERALLY BE 25 TO 35 BELOW INTO THIS EVENING...BUT WILL NOT BE GETTING ANY WORSE OVERNIGHT DESPITE THE COLD OVERNIGHT LOW TEMPERATURES EXPECTED DUE TO THE LIGHTER WIND SPEEDS. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$
000 WWUS43 KFSD 212359 WSWFSD URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SIOUX FALLS SD 559 PM CST SUN DEC 21 2008 .STRONG NORTHWEST WINDS WILL CONTINUE AT 20 TO 30 MPH WITH OCCASIONAL GUSTS TO 35 MPH THROUGH LATE THIS AFTERNOON INTO EARLY EVENING...BEFORE DROPPING OFF TO 5 TO 15 MPH OR LESS BY MIDNIGHT TONIGHT. AREAS OF BLOWING AND DRIFTING SNOW WILL CONTINUE...BUT VISIBILITIES WILL GENERALLY BE GREATER THAN 1 TO 3 MILES THROUGH THIS EVENING. WIND CHILL VALUES WILL GENERALLY BE 20 TO 35 BELOW INTO THIS EVENING...AND WILL NOT BE GETTING ANY WORSE OVERNIGHT DESPITE THE COLD OVERNIGHT LOW TEMPERATURES EXPECTED DUE TO THE LIGHTER WIND SPEEDS. SDZ039-040-054>056-061-062-066-067-220100- /O.EXP.KFSD.WC.W.0005.000000T0000Z-081222T0000Z/ KINGSBURY-BROOKINGS-MINER-LAKE-MOODY-MCCOOK-MINNEHAHA-TURNER- LINCOLN- INCLUDING THE CITIES OF...DE SMET...ARLINGTON...LAKE PRESTON... BROOKINGS...HOWARD...MADISON...FLANDREAU...SALEM...CANISTOTA... BRIDGEWATER...MONTROSE...SIOUX FALLS...PARKER...CENTERVILLE... MARION...VIBORG...HURLEY...CHANCELLOR...CANTON...LENNOX...TEA... HARRISBURG 559 PM CST SUN DEC 21 2008 ...WIND CHILL WARNING WILL EXPIRE AT 6 PM CST THIS AFTERNOON... THE WIND CHILL WARNING WILL EXPIRE AT 6 PM CST THIS AFTERNOON. WIND CHILL VALUES WILL STILL REMAIN IN THE 20 TO 25 BELOW RANGE FOR A FEW HOURS BEFORE THE WIND DECREASES LATE THIS EVENING. $$ IAZ002-003-MNZ071-072-080-081-089-090-097-220300- /O.CON.KFSD.WC.W.0006.000000T0000Z-081222T0300Z/ OSCEOLA-DICKINSON-LINCOLN-LYON-MURRAY-COTTONWOOD-NOBLES-JACKSON- PIPESTONE- INCLUDING THE CITIES OF...SIBLEY...SPIRIT LAKE...MILFORD... ARNOLDS PARK...TYLER...HENDRICKS...LAKE BENTON...IVANHOE... MARSHALL...SLAYTON...FULDA...WINDOM...MOUNTAIN LAKE... WORTHINGTON...JACKSON...LAKEFIELD...PIPESTONE 559 PM CST SUN DEC 21 2008 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 9 PM CST THIS EVENING... A WIND CHILL WARNING REMAINS IN EFFECT UNTIL 9 PM CST THIS EVENING. STRONG NORTHWEST WINDS WILL CONTINUE AT 20 TO 30 MPH WITH OCCASIONAL GUSTS TO 35 MPH THROUGH LATE THIS AFTERNOON INTO EARLY EVENING...BEFORE DROPPING OFF TO 5 TO 15 MPH OR LESS BY MIDNIGHT TONIGHT. AREAS OF BLOWING AND DRIFTING SNOW WILL CONTINUE...BUT VISIBILITIES WILL GENERALLY BE GREATER THAN 1 TO 3 MILES THROUGH THIS EVENING. WIND CHILL VALUES WILL GENERALLY BE 25 TO 35 BELOW INTO THIS EVENING...BUT WILL NOT BE GETTING ANY WORSE OVERNIGHT DESPITE THE COLD OVERNIGHT LOW TEMPERATURES EXPECTED DUE TO THE LIGHTER WIND SPEEDS. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$ IAZ001-012>014-020>022-031-032-MNZ098-NEZ013-014-SDZ070-071- 220300- /O.CON.KFSD.WC.W.0005.000000T0000Z-081222T0300Z/ LYON-SIOUX-OBRIEN-CLAY-PLYMOUTH-CHEROKEE-BUENA VISTA-WOODBURY-IDA- ROCK-DIXON-DAKOTA-UNION- INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD... LARCHWOOD...ORANGE CITY...SIOUX CENTER...SHELDON...HARTLEY... SANBORN...SPENCER...LE MARS...CHEROKEE...STORM LAKE... SIOUX CITY...IDA GROVE...HOLSTEIN...BATTLE CREEK...LUVERNE... WAKEFIELD...PONCA...ALLEN...SOUTH SIOUX CITY...VERMILLION... NORTH SIOUX CITY...BERESFORD...ELK POINT...ALCESTER...JEFFERSON 559 PM CST SUN DEC 21 2008 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 9 PM CST THIS EVENING... A WIND CHILL WARNING REMAINS IN EFFECT UNTIL 9 PM CST THIS EVENING. STRONG NORTHWEST WINDS WILL CONTINUE AT 20 TO 30 MPH WITH OCCASIONAL GUSTS TO 35 MPH THROUGH LATE THIS AFTERNOON INTO EARLY EVENING...BEFORE DROPPING OFF TO 5 TO 15 MPH OR LESS BY MIDNIGHT TONIGHT. AREAS OF BLOWING AND DRIFTING SNOW WILL CONTINUE...BUT VISIBILITIES WILL GENERALLY BE GREATER THAN 1 TO 3 MILES THROUGH THIS EVENING. WIND CHILL VALUES WILL GENERALLY BE 25 TO 35 BELOW INTO THIS EVENING...BUT WILL NOT BE GETTING ANY WORSE OVERNIGHT DESPITE THE COLD OVERNIGHT LOW TEMPERATURES EXPECTED DUE TO THE LIGHTER WIND SPEEDS. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$
000 WWUS43 KFSD 220319 WSWFSD URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SIOUX FALLS SD 919 PM CST SUN DEC 21 2008 IAZ001-012>014-020>022-031-032-MNZ098-NEZ013-014-SDZ070-071- 220430- /O.EXP.KFSD.WC.W.0005.000000T0000Z-081222T0300Z/ LYON-SIOUX-OBRIEN-CLAY-PLYMOUTH-CHEROKEE-BUENA VISTA-WOODBURY-IDA- ROCK-DIXON-DAKOTA-UNION- INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD... LARCHWOOD...ORANGE CITY...SIOUX CENTER...SHELDON...HARTLEY... SANBORN...SPENCER...LE MARS...CHEROKEE...STORM LAKE... SIOUX CITY...IDA GROVE...HOLSTEIN...BATTLE CREEK...LUVERNE... WAKEFIELD...PONCA...ALLEN...SOUTH SIOUX CITY...VERMILLION... NORTH SIOUX CITY...BERESFORD...ELK POINT...ALCESTER...JEFFERSON 919 PM CST SUN DEC 21 2008 ...WIND CHILL WARNING HAS EXPIRED... THE WIND CHILL WARNING IS NO LONGER IN EFFECT. WIND CHILL VALUES AROUND 20 BELOW ZERO WILL CONTINUE THROUGH ABOUT MIDNIGHT BEFORE WINDS DECREASE TO LESS THAN 6 MPH. $$ IAZ002-003-MNZ071-072-080-081-089-090-097-220430- /O.EXP.KFSD.WC.W.0006.000000T0000Z-081222T0300Z/ OSCEOLA-DICKINSON-LINCOLN-LYON-MURRAY-COTTONWOOD-NOBLES-JACKSON- PIPESTONE- INCLUDING THE CITIES OF...SIBLEY...SPIRIT LAKE...MILFORD... ARNOLDS PARK...TYLER...HENDRICKS...LAKE BENTON...IVANHOE... MARSHALL...SLAYTON...FULDA...WINDOM...MOUNTAIN LAKE... WORTHINGTON...JACKSON...LAKEFIELD...PIPESTONE 919 PM CST SUN DEC 21 2008 ...WIND CHILL WARNING HAS EXPIRED... THE WIND CHILL WARNING IS NO LONGER IN EFFECT. WIND CHILL VALUES AROUND 20 BELOW ZERO WILL CONTINUE THROUGH ABOUT MIDNIGHT BEFORE WINDS DECREASE TO LESS THAN 6 MPH. $$
What forecasters said that day
The local office's own words before this wind chill warning 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 wind chill warning went out at Dec 20, 8:38 PM CST, 7 hours 7 minutes earlier.
Area forecast discussion, Dec 20, 8:38 PM CST, 7 hours 7 minutes before
AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
838 PM CST SAT DEC 20 2008
.DISCUSSION...
DROPPED THE BLIZZARD WARNING FOR A FEW COUNTIES WEST OF INTERSTATE
29 AS VISBYS ARE WAY UP AND THESE AREAS ONLY RECEIVED AN INCH OR TWO
EARLIER TODAY. FROM THE I29 CORRIDOR...PHONE CALLS AROUND THE REGION
SUGGEST OCCASIONAL WHITE OUT CONDITIONS AS WELL AS A LOT OF
DRIFTING. IN FACT...A COUPLE OF THE COUNTIES IN SW MN HAVE PULLED
THE PLOWS UNTIL TOMORROW MORNING AS THE DRIFTING IS TOO MUCH TO KEEP
UP WITH. OTHERWISE...FORECAST IN LINE WITH VERY COLD WIND CHILLS AND
STEADY OR SLOWLY FALLING TEMPERATURES IN A RELATIVELY WELL MIXED
ENVIRONMENT TONIGHT.
FOR NOW WILL NOT COMPLICATE THINGS...BUT WITH THE BLIZZARD WARNING
ENDING AT NOON TOMORROW...STILL COLD ENOUGH AND BREEZY ENOUGH FOR
COLD WIND CHILLS...SO A WIND CHILL WARNING MAY BE NEEDED INTO
TOMORROW EVENING...ESPECIALLY OVER THE EASTERN TWO THIRDS OF THE
CWA.
&&
.PREV DISCUSSION...
FOR THE REST OF THIS AFTERNOON THROUGH SUNDAY MORNING...THE MAIN
PROBLEM WILL CONTINUE TO BE THE STRONG NORTHWEST WINDS...BLOWING
SNOW...AND BITTERLY COLD WIND CHILLS. NAM AND GFS BOTH SHOW SLIGHT
DECREASE IN WINDS ACROSS THE CWA LATE THIS AFTERNOON AND THIS
EVENING...FOLLOWED BY A SECONDARY SURGE IN WIND SPEEDS ASSOCIATED
WITH MAIN PUSH OF COLDER AIR CURRENTLY OVER WESTERN AND CENTRAL ND.
EXPECT TO SEE WINDS GET BACK INTO THE 25 TO 40 MPH RANGE AFTER
MIDNIGHT...CONTINUING INTO SUNDAY MORNING. THESE SPEEDS SHOULD BE
STRONG ENOUGH TO CONTINUE LIFTING AND BLOWING EXISTING SNOW PACK TO
REDUCE VISIBILITIES TO LESS THAN 1/2 MILE AT TIMES. TEMPERATURES
WILL CONTINUE STEADY FALL THROUGH TONIGHT...WITH NOT MUCH WARMING
EXPECTED ON SUNDAY. WIND CHILLS OF 25 TO 40 BELOW WILL BE COMMON.
WITH BLOWING SNOW...REDUCED VISIBILITIES...AND BITTERLY COLD WIND
CHILLS...WILL CONTINUE BLIZZARD WARNING. WINDS WILL SLOWLY DIMINISH
DURING THE AFTERNOON BUT TEMPERATURES WILL NOT RECOVER MUCH WITH
MOST AREAS REMAINING BELOW ZERO.
FOR SUNDAY NIGHT...THE SURFACE RIDGE MOVES ACROSS THE AREA. WITH
CLEAR SKIES AND LIGHT WINDS AS WELL AS NEW SNOW COVER...TEMPS SHOULD
REALLY DROP AND LOWS WILL APPROACH RECORD LEVELS IN NW IA WHERE IT
MAY GET AS COLD AS -25F. WEST OF THE JAMES RIVER...TEMPERATURES WILL
FALL QUICKLY IN THE EVENING BUT AS WINDS SWITCH TO THE SE AND HIGH
CLOUDS INCREASE...EXPECT THAT TEMPS WILL BECOME STEADY OR EVEN RISE.
THE NEXT SYSTEM APPROACHES FOR MONDAY NIGHT AND TUESDAY.
THEREFORE...MONDAY WILL SEE AN INCREASE IN CLOUDS AND SOUTHERLY
FLOW. 850 MB WINDS ARE AS HIGH AS 55 KTS ON MONDAY AFTERNOON SO
WOULD NOT BE SURPRISED TO SEE GUSTS OVER 30 MPH IN MORE EXPOSED
AREAS...ESP IN THE JAMES AND MISSOURI VALLEYS AS WELL AS THE BUFFALO
RIDGE. WITH CLOUDS THICKENING...THIS MAY ACTUALLY HELP TEMPS WARM
ABOVE ZERO AS SNOW COVER WILL NOT RERADIATE HEAT BACK TO SPACE.
ENOUGH DRY AIR AT LOW LEVELS TO PREVENT ANY PRECIP BEFORE EVENING
ALTHOUGH SHOULD BE SEEING VIRGA BY THAT TIME.
ANOTHER POTENT POTENTIAL VORTICITY ANOMALY MOVING ACROSS SRN SD INTO
SRN MN ON MON NIGHT AND TUE. GENERALLY FOLLOWED THE GFS SOLN WHICH
SHOWS A BROAD WARM ADVECTION BAND SETTING UP. WITH A FAIRLY STRONG
THERMAL GRADIENT TO WORK WITH...THIS SHOULD BE AN EFFICIENT SNOW
MAKER ESPECIALLY AS MUCH OF THE LOWER ATMOSPHERE IS AROUND -15C
FAVORING MORE DENDRITIC GROWTH AND 15 OR 20:1 SNOW RATIOS. THE BEST
GRADIENT AND FORCING REALLY SETS UP ALONG AND NORTH OF INTERSTATE 90
SO HAVE PLACED THE LARGEST SNOW AMOUNTS AND HIGHEST POPS IN THIS
AREA. FOR NOW HAVE SNOWFALL RANGING FROM 2 TO 4 INCHES NORTH OF A
HON TO FSD TO SPW LINE ASSUMING QPF. BECAUSE THIS IS A LOW DENSITY
SNOW...ONCE THE COLD FRONT MOVES THROUGH ON TUESDAY...EXPECT TO SEE
SOME MORE BLOWING SNOW ESP IN OPEN AREAS WHICH WILL CONTINUE INTO
TUE NIGHT. WITH THE PRECIP AND CLOUDS ON MON NIGHT...TEMPS SHOULD BE
STEADY OR EVEN RISE AHEAD OF THE FRONT. ONCE THE FRONT MOVES
THROUGH ON TUESDAY...TEMPS WILL BEGIN TO FALL DURING THE DAY AND
INTO TUE NIGHT WHEN LOWS WILL AGAIN BE BELOW ZERO IN MOST LOCATIONS.
FOR WED THRU SAT...THERE IS A LOT OF AGREEMENT FOR WED INTO
CHRISTMAS DAY. TOWARD THE END OF THE WEEK...THE SPREAD IN SOLNS
INCREASE BUT ALL MODELS AGREE THAT ANOTHER SNOW EVENT IS PROBABLE
FOR EITHER FRIDAY OR SATURDAY. THE ECMWF AND CANADIAN FAVOR A
FASTER SOLN WITH SNOW ON FRIDAY AND FRIDAY NIGHT WHILE THE 00Z AND
12Z GFS AS WELL AS THE 00Z GFS ENSEMBLE FAVOR A BETTER CHANCE ON
SATURDAY. BASED UPON ECMWF ENSEMBLE INFORMATION...HPC HAS FAVORED A
QUICKER SOLUTION PER THE ECMWF AND WILL FOLLOW THIS SOLN FOR THE
FORECAST. HOWEVER...WITH THE LARGE UNCERTAINTY...HAVE KEPT POPS
AROUND 30 FOR ANY PERIOD.
FOR THE DAY TO DAY FORECAST...WEDNESDAY APPEARS TO BE THE LAST
REALLY COLD DAY COMING UP AS HIGH PRESSURE MOVES FOLLOWING TUE SNOW
EVENT. THIS SHOT OF COLD AIR WILL BE SHORT LIVED AS THE RIDGE AXIS
RAPIDLY MOVES TO THE EAST SETTING UP A RETURN FLOW BY WED NIGHT.
EXPECT THAT THERE WILL BE A SLOW INCREASE IN MID AND UPPER CLOUDS
WED NIGHT SO THIS IN ADDITION TO INCREASING SE WINDS WILL KEEP TEMPS
FROM GETTING TO COLD WED NIGHT. CHRISTMAS DAY WILL SEE TEMPS THE
WARMEST THEY HAVE BEEN IN AT LEAST A WEEK WITH MANY AREAS NEAR OR
EVEN SLIGHTLY ABOVE NORMAL. ONLY THE FACT THAT THERE WILL BE SOME
MID LEVEL CLOUDS AND AMPLE SNOW COVER WILL KEEP TEMPS FROM RISING
EVEN FARTHER. LATEST 12Z GFS DOES HINT AT SOME LIGHT SNOW WITH THE
WARM AIR ADVECTION BUT MOISTURE REALLY APPEARS TO BE LACKING SO
EXPECTATION IS THAT FLURRIES WOULD BE THE MOST THAT COULD OCCUR SO
KEPT SNOW OUT OF FORECAST.
WITH EXPECTED SYSTEM MOVING IN ON FRIDAY...CLOUDS WILL INCREASE ON
THU NIGHT KEEPING MIN TEMPS ABOVE 10. THEN A CHANCE OF PCPN WILL
MOVE THROUGH THE AREA FRIDAY AND FRIDAY NIGHT. FOR NOW KEPT ALL PCPN
SNOW ALTHOUGH IF THERE IS ENOUGH WARMING ALOFT...FREEZING RAIN OR
SLEET IS NOT OUT OF THE QUESTION. WITH THE CLOUDS AND PCPN...TEMPS
WILL BE COOLER ON FRIDAY. AS RIDGE MOVES IN SATURDAY...EXPECT TEMPS
TO FALL BACK BELOW NORMAL.
&&
.AVIATION...
SFC WINDS HAVE DROPPED OFF ACROSS MOST OF THE AREA THIS
EVENING...HOWEVER THIS IS JUST A LULL. A QUICK MOVING AREA OF LOW
PRESSURE ALOFT WILL MOVE ACROSS ERN SD TONIGHT...WITH NW AGAIN WINDS
INCREASING TO 25 TO 40 MPH. MVFR CEILINGS TO DEVELOP LATE TONIGHT AS
THE UPPER LOW PASSES BY...WHILE BLOWING SNOW WILL REDUCE
VISIBILITIES AS LOW AS ONE MILE AT TIMES ONCE THE WINDS INCREASE.
WINDS WILL RAPIDLY DECREASE SUN EVENING...WITH VFR SUN NIGHT.
&&
.FSD WATCHES/WARNINGS/ADVISORIES...
IA...BLIZZARD WARNING UNTIL 12 PM CST SUNDAY FOR IAZ001-012>014-
020>022-031-032.
BLIZZARD WARNING UNTIL 3 PM CST SUNDAY FOR IAZ002-003.
MN...BLIZZARD WARNING UNTIL 12 PM CST SUNDAY FOR MNZ098.
BLIZZARD WARNING UNTIL 3 PM CST SUNDAY FOR MNZ071-072-080-081-
089-090-097.
NE...BLIZZARD WARNING UNTIL 12 PM CST SUNDAY FOR NEZ013-014.
SD...WIND CHILL WARNING UNTIL 12 PM CST SUNDAY FOR
SDZ038-050-052-053- 057>060-063>065-068-069.
BLIZZARD WARNING UNTIL 12 PM CST SUNDAY FOR SDZ039-040-054>056-
061-062-066-067-070-071.
&&
MG/SCHUAMCHERHazardous weather outlook, Dec 20, 5:58 AM CST, 21 hours 47 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SIOUX FALLS SD 0558 AM CST SAT DEC 20 2008 SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098- IAZ001>003-012>014-020>022-031-032-NEZ013-014-211200- 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- 0558 AM CST SAT DEC 20 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA... SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA. .DAY ONE...TODAY AND TONIGHT WINTER WEATHER... SNOWFALL...MAINLY EAST OF THE JAMES RIVER EARLY THIS MORNING WILL GRADUALLY END FROM WEST TO EAST. GREATEST SNOWFALL WILL BE FROM EAST CENTRAL SOUTH DAKOTA INTO PORTIONS OF SOUTHWEST MINNESOTA...WHERE AN ADDITIONAL INCH OR TWO SNOWFALL IS EXPECTED. AN INCH OR LESS ACCUMULATION WILL OCCUR TO THE SOUTH. BEHIND AN ARCTIC FRONT...STRONG NORTHWEST WINDS FROM 25 TO 35 MPH...WITH GUSTS AT TIMES TO 40 MPH WILL SPREAD FROM WEST TO EAST. WITH THE ABUNDANCE OF RECENT SNOWFALL...BLIZZARD CONDITIONS WITH VISIBILITIES OF A QUARTER MILE OR LESS AT TIMES ARE EXPECTED...LINGERING ALL THE WAY INTO SUNDAY MORNING IN SOUTHEAST SOUTH DAKOTA...AND SUNDAY AFTERNOON ACROSS SOUTHWEST MINNESOTA. WHITEOUT CONDITIONS CAN BE IN ADDITION...TEMPERATURES FALL THROUGH THE DAY AND MORE OR LESS CONTINUE FALLING ALL THE WAY TO ACTUAL MONDAY MORNING LOWS FROM 15 BELOW TO TO 22 BELOW ZERO. WITH THE STRONG WINDS...WIND CHILLS WILL REACH A LIFE THREATENING 25 BELOW TO 40 BELOW ZERO BY TONIGHT AND SUNDAY. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY BLIZZARD CONDITIONS WILL CONTINUE SUNDAY IN AREAS EAST OF THE JAMES RIVER VALLEY. ANOTHER WEATHER DISTURBANCE SHOULD MOVE EAST OVER THE AREA MONDAY NIGHT AND TUESDAY...BRINGING ANOTHER CHANCE OF ACCUMULATING 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.
Nearby
Wind Chill Warnings in Minnesota, 2008Wind Chill Warnings in Iowa, 2008Every wind chill warning 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; radar from the NEXRAD Level II archive.