Northwest winds sustained at near 30 mph with gusts to 40 mph combined with existing snow cover to produce areas of blowing snow, with visibilities falling to a half mile in places.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS FSD wrote it up.
Northwest winds sustained at near 30 mph with gusts to 40 mph combined with existing snow cover to produce areas of blowing snow, with visibilities falling to a half mile in places.
The local office's own words before the first event, 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 the first event at Dec 20, 5:10 AM CST, 4 hours 50 minutes earlier.
AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
510 AM CST SAT DEC 20 2008
.DISCUSSION...
OBVIOUS FOCUS FOR FORECAST IS THE UPCOMING DETERIORATING CONDITIONS
AND BLIZZARD THREAT ACRS THE FCST AREA. THIS MORNING...ARCTIC BNDRY
INTO THE JAMES RIVER VALLEY...WITH WINDS ALREADY A GOOD 25 TO 35 KTS
ON BASIS OF MAINLY SHALLOW FORCING. STRONG WAVE ON WV STARTING TO
SLIDE THRU WRN SD...AND THIS SHUD AID IN COUPLING AN INCREASINGLY
STRONGER GRADIENT ALFT TOWARD THE SFC. PV IMPULSE WITH STRONG JET
IMPULSE DRIVING A STRONG CLEARING BNDRY INTO CNTRL SD...BUT ALSO
INTERACTING WITH DECENT BAROCLINIC/FRONTOGENETIC ZONE TO PRODUCE A
FAIRLY WIDESPREAD BAND OF SNOWFALL ACRS CWA. HOWEVER...EFFICIENCY OF
PCPN HAS BEEN A BIT LACKING WITH RATES NOT BEEN VERY HIGH AND FOR
MOST PART HAVE NOT SEEN HIGHLY DENDRITIC GROWTH WITHIN SNOW AREA.
CONDITIONS ARE SOMEWHAT BETTER TOWARD THE N/NE WITH SOMEWHAT
STRONGER FORCING OVERLAP...AND MAX LIFT NICELY WITHIN DENDRITIC
ZONE. THEREFORE...WL KEEP HIGHER SNOWFALL AMNTS GOING MAINLY OVER
NERN 1/2 OF CWA AS BEFORE...BUT TAPER DOWN A BIT THRU W AND FAR S.
WINDS HAVE BEEN COMING UP A BIT SOONER THAN EARLIER THOUGHT...SO
DESPITE SOME SNOW TOTALS ENDING UP BLO ADVY...WL KEEP EXISTING
WINTER WX ADVY HIGHLIGHT GOING TO COVER COMBO OF SNOW AND BLOWING
SNOW. TRANSITION TO BLIZZARD WARNING REMAINS INEVITABLE FOR MOST
TODAY...STARTING UP RIGHT AWAY IN WRN THIRD...AND SPREADING STEADILY
EWRD AS INITIAL WAVE SLIDES BY DURING THE MORNING HOURS. SNOWFALL
WL END BEFORE STRONGEST WINDS FOR MOST...BUT ENOUGH FLUFF TO CONCERN
MOST. STILL HAVE CONCERNS THAT WINDS MAY TRY AND DECREASE HEADING
INTO AT LEAST THE FIRST HALF OF THE NIGHT AS SOME WK RIDGING ALFT
SLIDES IN AHEAD OF TRAILING LOBE WHICH SHOULD REALLY GET WINDS GOING
LATE TONIGHT AND THRU SUNDAY MORNING...AS LOW TO MID LVL GRADIENT
TIGHTENS. WHAT MAY KEEP WINDS UP A BIT MORE THAN EXPECTED IS THE
OVERALL STRONG LOW LVL CAA THRU THE EVENING AND INCREASE OF
GEOSTROPHIC POTENTIAL ALFT. CONSIDERING ALL THE SNOW LATELY...MOST
OF THE AREA SHUD HAVE LITTLE DIFFICULTY PRODUCING VSBYS FREQUENTLY
AOB ONE QUARTER MILE AND AT LEAST GUSTS OVER 35 MPH...WITH EXCEPTION
OF MORE SHELTERED CITY LOCATIONS. WITH LESSER SNOW AND SNOWCOVER
THRU THE FAR SW...CONSIDERED CUTTING BACK TO A WIND CHILL/WINTER WX
HIGHLIGHT OVER BLIZZARD...BUT NO SENSE IN GETTING TOO CUTE WITH THE
SERIOUS THREAT OVERALL. COMBINATION OF WINDS/VSBYS LKLY TO BE VERY
LIFE THREATENING FOR MOST OF THE AREA...ESPLY WHEN THE WORST MAY HIT
LATER TONIGHT INTO SUNDAY MORNING...LINGERING THRU ERN CWA IN THE
AFTN.
AS USUAL...TEMPERATURE AND MOISTURE REPRESENTATION BEHIND BNDRY IS
MUCH TOO SLOW IN FALLING...AND INITIAL CHANGES MADE TO ACCELERATE
THE FALL AND KEEP IT GOING THRU AFTN. NOT SURE WHERE GUIDANCE RISING
TMPS COMING FROM IN NAM/FWC...BUT MAV SEEMS TO CAPTURE THE OVERALL
TREND IN TMPS FAIRLY WELL FOR NEXT COUPLE DAYS. WINTER SOLSTICE ON
SUNDAY WL CERTAINLY BE MEMORABLE FOR THE CHILL...AND MAY GET CLOSE
ENOUGH TO RIVAL 1983 AND 1989 OCCURRENCES.
TALK ABOUT COLD...WITH SFC RIDGE BUILDING IN SUN NIGHT AND WINDS
DROPPING TO A MERE BREATH MOST AREAS...SETUP FOR COLDEST NIGHT OF
THE YEAR THUSFAR. MAY BE CONSERVATIVE WITH SOME 20 BELOW LOWS.
STRONG RIDGE SHIFTS EWRD ON MONDAY...WITH STRONG SLY FLOW DEVELOPING
THRU THE DAY AND INTO THE NIGHT ACRS THE AREA. INCREASING CLOUDS IN
AFTN AS NEXT WAVE EJECTS IN THE ACTIVE FLOW INTO THE PLAINS. INITIAL
DRY AIRMASS LKLY TO KEEP PCPN OUT OF THE MIX ON MONDAY AFTN...BUT WL
HAVE TO WATCH FAR NWRN CWA FOR A QUICK LATE DAY SATURATION FM ALFT
WITH FIRST DIV Q PULSE MOVING INTO FAR WRN CWA. A GOOD SPREAD IN
WHERE BEST JET/FRONTAL DYNAMICS MAY AFFECT AREA...WITH BULK FOCUSING
A BIT MORE TO N. OPERATIONAL GFS DYNAMICS ARE A BIT DISCONNECTED...
BUT ENOUGH FRONTAL FORCING WITH WAVE COMING QUICKLY NE TO BUMP POPS
TO LOWER LKLY FOR MAINLY NRN/NERN CWA. OVERALL...A MINOR SYSTEM
COMPARED TO THOSE OF LATE WITH A COUPLE INCHES AT MOST POSSIBLE
NORTH. TMPS QUITE NON DIURNAL MON NIGHT...AND MAY EVEN ATTEMPT TUE
BEHIND SYSTEM AS STRONG LITTLE COLD PUNCH WORKS SWRD ONCE AGAIN.
COULD HAVE GONE COLDER ON LOWS FOR WED MORNING...ESPLY IN MORE WRN
AREAS CLOSER TO WKR SFC WINDS.
&&
.AVIATION...
WDSPRD S- WL CREATE MVFR TO OCNL IFR CONDITIONS THRU 15Z. W OF
I29...SFC WNDS WL SHIFT TO THE NORTHWEST AND INCREASE TO 20 TO 40
AND WL CREATE BLIZZARD CONDITIONS WITH VSBYS FREQUENTLY BLO 1/2SM
IN BLSN. THE BLIZZARD CONDITIONS SHUD SPREAD INTO AREAS E OF I29 BY
18Z.
&&
.FSD WATCHES/WARNINGS/ADVISORIES...
IA...BLIZZARD WARNING FROM NOON TODAY TO 12 PM CST SUNDAY FOR IAZ001-
012>014-020>022-031-032.
WINTER WEATHER ADVISORY UNTIL NOON CST TODAY FOR IAZ001-012-020-
031.
WINTER WEATHER ADVISORY UNTIL NOON CST TODAY FOR IAZ002-003-013-
014-021-022-032.
BLIZZARD WARNING FROM NOON TODAY TO 3 PM CST SUNDAY FOR IAZ002-
003.
MN...BLIZZARD WARNING FROM NOON TODAY TO 12 PM CST SUNDAY FOR MNZ098.
WINTER WEATHER ADVISORY UNTIL NOON CST TODAY FOR MNZ098.
WINTER WEATHER ADVISORY UNTIL NOON CST TODAY FOR MNZ071-072-080-
081-089-090-097.
BLIZZARD WARNING FROM NOON TODAY TO 3 PM CST SUNDAY FOR MNZ071-
072-080-081-089-090-097.
NE...BLIZZARD WARNING FROM NOON TODAY TO 12 PM CST SUNDAY FOR NEZ013-
014.
WINTER WEATHER ADVISORY UNTIL NOON CST TODAY FOR NEZ013-014.
SD...BLIZZARD WARNING FROM NOON TODAY TO 12 PM CST SUNDAY FOR SDZ039-
040-054>056-061-062-066-067-070-071.
WINTER WEATHER ADVISORY UNTIL NOON CST TODAY FOR SDZ039-040-
054>056-061-062-066-067-070-071.
WINTER WEATHER ADVISORY UNTIL 6 AM CST EARLY THIS MORNING FOR
SDZ038-050-052-053-057>060-063>065-068-069.
BLIZZARD WARNING UNTIL 6 AM CST SUNDAY FOR SDZ038-050-052-053-
057>060-063>065-068-069.
&&
CHAPMAN/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.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
826 AM CST SAT DEC 20 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM SNOW 2 NE LAKEFIELD 43.70N 95.14W
12/20/2008 M3.2 INCH JACKSON MN CO-OP OBSERVER
0700 AM SNOW 5 NE SIBLEY 43.45N 95.67W
12/20/2008 M4.0 INCH OSCEOLA IA CO-OP OBSERVER
0700 AM SNOW 1 NE WORTHINGTON 43.64N 95.58W
12/20/2008 M3.0 INCH NOBLES MN CO-OP OBSERVER
0700 AM SNOW PICKSTOWN 43.07N 98.53W
12/20/2008 M0.8 INCH CHARLES MIX SD CO-OP OBSERVER
0700 AM SNOW WHITE LAKE 43.73N 98.71W
12/20/2008 M1.3 INCH AURORA SD CO-OP OBSERVER
0800 AM SNOW SIOUX FALLS 43.54N 96.73W
12/20/2008 M1.9 INCH MINNEHAHA SD OFFICIAL NWS OBS
0600 AM SNOW HURON 44.36N 98.22W
12/20/2008 M0.7 INCH BEADLE SD CO-OP OBSERVER
0800 AM SNOW ROCK VALLEY 43.20N 96.30W
12/20/2008 M2.0 INCH SIOUX IA CO-OP OBSERVER
0600 AM SNOW CHAMBERLAIN 43.81N 99.32W
12/20/2008 E1.0 INCH BRULE SD AWOS
&&
MDBPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
827 AM CST SAT DEC 20 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM SNOW OCHEYEDAN 43.42N 95.54W
12/20/2008 M2.5 INCH OSCEOLA IA CO-OP OBSERVER
&&
MDBPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
842 AM CST SAT DEC 20 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0840 AM SNOW WALL LAKE 43.53N 96.96W
12/20/2008 M1.8 INCH MINNEHAHA SD CO-OP OBSERVER
0800 AM SNOW YANKTON 42.89N 97.39W
12/20/2008 M2.0 INCH YANKTON SD CO-OP OBSERVER
&&
MDBPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
855 AM CST SAT DEC 20 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0854 AM SNOW TRACY 44.24N 95.62W
12/20/2008 M4.5 INCH LYON MN PUBLIC
0854 AM SNOW PIPESTONE 44.00N 96.31W
12/20/2008 M4.0 INCH PIPESTONE MN AMATEUR RADIO
&&
MDBPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
930 AM CST SAT DEC 20 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0900 AM SNOW 3 ESE SIOUX FALLS 43.53N 96.67W
12/20/2008 M2.3 INCH MINNEHAHA SD MESONET
0900 AM SNOW 7 WSW GARRETSON 43.68N 96.63W
12/20/2008 M2.0 INCH MINNEHAHA SD MESONET
0900 AM SNOW 1 SW BROOKINGS 44.30N 96.80W
12/20/2008 M2.5 INCH BROOKINGS SD MESONET
0900 AM SNOW 13 NE BROOKINGS 44.44N 96.60W
12/20/2008 M3.0 INCH BROOKINGS SD MESONET
0900 AM SNOW NNE VIBORG 43.17N 97.08W
12/20/2008 M2.0 INCH TURNER SD MESONET
0900 AM SNOW NE MARION 43.42N 97.26W
12/20/2008 M2.0 INCH TURNER SD MESONET
0900 AM SNOW 5 NW MONTROSE 43.75N 97.25W
12/20/2008 M3.0 INCH MCCOOK SD MESONET
0900 AM SNOW 8 SSW HERRICK 43.01N 99.25W
12/20/2008 E0.5 INCH GREGORY SD MESONET
0900 AM SNOW 1 N SPENCER 43.16N 95.15W
12/20/2008 M4.5 INCH CLAY IA CO-OP OBSERVER
&&
MDBPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
951 AM CST SAT DEC 20 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0942 AM SNOW MARSHALL 44.45N 95.79W
12/20/2008 E6.0 INCH LYON MN LAW ENFORCEMENT
0944 AM SNOW LUVERNE 43.65N 96.21W
12/20/2008 E3.0 INCH ROCK MN LAW ENFORCEMENT
0945 AM SNOW JACKSON 43.62N 94.99W
12/20/2008 E4.0 INCH JACKSON MN LAW ENFORCEMENT
0940 AM SNOW IVANHOE 44.46N 96.25W
12/20/2008 E6.0 INCH LINCOLN MN PUBLIC
0900 AM SNOW WESSINGTON SPRINGS 44.08N 98.57W
12/20/2008 M1.6 INCH JERAULD SD CO-OP OBSERVER
&&
MDBThe national radar mosaic for the moment the first event began.
2 winter weather. Local standard time, as filed.
Northwest winds sustained at around 30 mph with gusts to 40 mph combined with loose snow cover to cause blowing snow. Visibility lowered to around a half mile at times.
Northwest winds sustained at around 30 mph with gusts to 40 mph combined with loose snow cover to cause blowing snow. Visibility lowered to around a half mile at times.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nebraska in 2008Every state in 2008This day in weather historyWarnings in Nebraska, December 2008
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 148469, 148470.