Strong winds, which were slowly decreasing after a snowfall, combined with bitterly cold arctic air to drive wind chills to 35 to 50 degrees below zero from late on December 17th through the morning of December 18th.
Every event with a place to put it; 24 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.
Strong winds, which were slowly decreasing after a snowfall, combined with bitterly cold arctic air to drive wind chills to 35 to 50 degrees below zero from late on December 17th through the morning of December 18th.
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 17, 3:00 PM CST, 0 minutes earlier.
Area Forecast Discussion
National Weather Service Sioux Falls SD
300 PM CST Sat Dec 17 2016
.SHORT TERM...(This evening through Sunday)
Issued at 300 PM CST Sat Dec 17 2016
The story in the short term is life threatening cold.
Low temperatures tonight will drop towards values we haven't
experienced in over 7 years, and in some cases, we'll experience
one of the earliest extreme colds on record.
We're already setting up nicely for a rapid fall once the sun sets
today, as clouds have quickly moved southeast. The surface ridge
will drift across the area after midnight, allowing a light
southerly wind to develop in the Missouri River Valley by 3am. We'll
see if this southerly shift has any impact on temperatures over the
western CWA. Elsewhere, with a light wind never truly trending calm,
wind chill values will fall below -30 and -45 over the CWA. These
life-threatening wind chills will persist through the morning hours
as southerly winds increase their speed through mid-morning.
Clouds will move across the area on Sunday, with high temperatures
slowly crawling above zero in some areas. Have kept high
temperatures below zero over deeper snow pack areas of southwest
Minnesota. Wind chills may remain -10 to -20 below through the
afternoon over areas east of I-29.
.LONG TERM...(Sunday night through Saturday)
Issued at 300 PM CST Sat Dec 17 2016
The most significant weather feature from Sunday night to Christmas
Eve will be the immediate rapid warming to above normal temperatures
for most of the week. The upper flow will be quickly transitioning to
westerly, and a series of rapidly moving waves along and just south
of the Canadian border will force frigid arctic air well into
northeastern Canada.
Temperatures will fall at most a tiny bit Sunday night, despite
mostly clear skies, as the southwesterly surface flow brings
warming. This flow looks typically string enough on the model BL
winds to produce a blowing snow threat along the Buffalo Ridge in
southwest MN, and will add. High temperatures should be in the 20s
to lower 30s Monday, and in the 30s everywhere Tuesday. Any light
precipitation with the first wave Tuesday should be to the north.
Another rapidly moving wave on Wednesday is forecast on model
solutions to track far enough south to mildly threaten our area with
light precipitation. The GFS brings this system further south than
the EC and Canadian, and a compromise leads to a 50 percent chance
of light snow for Wednesday, mainly in southwest Minnesota. Further
south, where we will go slight chance, the system may bring enough
warm air aloft to threaten freezing rain or sleet along the
Missouri River. Will not mention this for now because of the low
threat of precipitation, and the understandable variance in model
solutions in handling such a rapidly moving system. Should this wave
come out stronger on future model solutions, it could become the main
weather feature for the period. Meanwhile, temperatures Wednesday
should still be mild with highs mostly in the 30s.
Thursday looks dry and mild, then another wave Friday looks dry at
this time. A broad and weak trough developing behind the Friday
system may bring modest cooling for Saturday, which will be
Christmas Eve. At this time, the Canadian appears to be the only
operational model still forecasting a halfways strong Christmas
weekend winter weather system, but it shows precipitation with it
only as close to our area as southeast NE and southern IA.
&&
.AVIATION...(For the 18Z TAFS through 18Z Sunday afternoon)
Issued at 1128 AM CST Sat Dec 17 2016
Stratus clearing the area quickly today. However, Sioux City will
continue to see very light flurries and blowing snow into the mid
afternoon hours. A gusty northerly wind will begin to calm down
this evening, with VFR conditions and VERY COLD wind chills into
Sunday.
&&
.FSD WATCHES/WARNINGS/ADVISORIES...
SD...Wind Chill Warning until noon CST Sunday for SDZ038>040-050-
052>071.
MN...Wind Chill Warning until noon CST Sunday for MNZ071-072-080-081-
089-090-097-098.
IA...Wind Chill Warning until noon CST Sunday for IAZ001>003-012>014-
020>022-031-032.
NE...Wind Chill Warning until noon CST Sunday for NEZ013-014.
&&
SHORT TERM...Dux
LONG TERM...
AVIATION...DuxHAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SIOUX FALLS SD 337 AM CST SAT DEC 17 2016 MNZ071-072-080-081-089-090-097-098-180945- LINCOLN MN-LYON MN-MURRAY-COTTONWOOD-NOBLES-JACKSON-PIPESTONE- ROCK- 337 AM CST SAT DEC 17 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST MINNESOTA. .DAY ONE...TODAY AND TONIGHT LIGHT SNOW WILL CONTINUE THROUGH THE MORNING BEFORE ENDING IN THE EARLY AFTERNOON. ADDITIONAL ACCUMULATION WILL BE LESS THAN HALF AN INCH. NORTHWEST WINDS OF 15 TO 20 MPH WITH GUSTS TO 30 MPH WILL RESULT IN AREAS OF BLOWING SNOW INTO THE AFTERNOON. IN ADDITION...BITTERLY COLD TEMPERATURES WILL RESULT IN DANGEROUS WIND CHILLS OF AROUND 30 BELOW ZERO THROUGH THE DAY, AND 35 BELOW TO 45 BELOW ZERO FOR TONIGHT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. IAZ001>003-012>014-020>022-031-032-NEZ013-014-SDZ066>071-180945- LYON IA-OSCEOLA-DICKINSON-SIOUX-O'BRIEN-CLAY IA-PLYMOUTH-CHEROKEE- BUENA VISTA-WOODBURY-IDA-DIXON-DAKOTA-TURNER-LINCOLN SD-BON HOMME- YANKTON-CLAY SD-UNION- 337 AM CST SAT DEC 17 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST IOWA...WEST CENTRAL IOWA...NORTHEAST NEBRASKA AND SOUTHEAST SOUTH DAKOTA. .DAY ONE...TODAY AND TONIGHT LIGHT SNOW WILL CONTINUE INTO THE AFTERNOON...WITH UP TO AN INCH OF ADDITIONAL ACCUMULATION POSSIBLE. NORTHWEST WINDS OF 20 TO 30 MPH WILL RESULT IN AREAS OF BLOWING SNOW INTO THE AFTERNOON. IN ADDITION...BITTERLY COLD TEMPERATURES WILL RESULT IN DANGEROUS WIND CHILLS OF AROUND 25 BELOW ZERO THROUGH THE DAY, AND 25 BELOW TO 35 BELOW ZERO FOR TONIGHT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. SDZ038>040-050-052>065-180945- BEADLE-KINGSBURY-BROOKINGS-GREGORY-JERAULD-SANBORN-MINER-LAKE- MOODY-BRULE-AURORA-DAVISON-HANSON-MCCOOK-MINNEHAHA-CHARLES MIX- DOUGLAS-HUTCHINSON- 337 AM CST SAT DEC 17 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL SOUTH DAKOTA...EAST CENTRAL SOUTH DAKOTA...SOUTH CENTRAL SOUTH DAKOTA AND SOUTHEAST SOUTH DAKOTA. .DAY ONE...TODAY AND TONIGHT BITTERLY COLD TEMPERATURES AND NORTHWEST WINDS OF 15 TO 20 MPH WILL RESULT IN WIND CHILLS OF 30 BELOW TO 35 BELOW ZERO FOR TODAY. BY TONIGHT WINDS CHILLS WILL DROP TO 35 BELOW TO 45 BELOW ZERO. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1142 AM CST SAT DEC 17 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1140 AM SNOW LUVERNE 43.65N 96.21W
12/17/2016 E7.8 INCH ROCK MN PUBLIC
.
&&
NWS SIOUX FALLS SD
IRIS SYSTEMPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1152 AM CST SAT DEC 17 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1151 AM SNOW BOYDEN 43.19N 96.00W
12/17/2016 E4.5 INCH SIOUX IA PUBLIC
FROM SOCIAL MEDIA.
&&
NWS SIOUX FALLS SD
IRIS SYSTEMPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1200 PM CST SAT DEC 17 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1106 PM HEAVY SNOW JACKSON 43.62N 94.99W
12/16/2016 M10.0 INCH JACKSON MN PUBLIC
SOCIAL MEDIA REPORT.
1050 AM SNOW 1 SE TEA 43.44N 96.82W
12/17/2016 E8.6 INCH LINCOLN SD PUBLIC
.
1140 AM SNOW LUVERNE 43.65N 96.21W
12/17/2016 E7.8 INCH ROCK MN PUBLIC
.
1004 PM SNOW RUSHMORE 43.62N 95.80W
12/16/2016 M7.3 INCH NOBLES MN PUBLIC
SOCIAL MEDIA REPORT...SNOW ONGOING.
0600 AM SNOW HARTFORD 43.63N 96.94W
12/17/2016 M7.2 INCH MINNEHAHA SD COCORAHS
COCORAHS STATION HARTFORD /SD-MH-46/.
0700 AM SNOW 3 ESE SIOUX FALLS 43.53N 96.67W
12/17/2016 M7.2 INCH MINNEHAHA SD CO-OP OBSERVER
CO-OP OBSERVER STATION SIOUX FALLS 3ESE
/DEMS2/.
0700 AM SNOW 3 ESE SIOUX FALLS 43.52N 96.67W
12/17/2016 M7.2 INCH MINNEHAHA SD COCORAHS
COCORAHS STATION 3 ESE SIOUX FALLS
/SD-MH-1/.
0559 AM SNOW 3 NNW SIOUX FALLS 43.58N 96.75W
12/17/2016 M7.1 INCH MINNEHAHA SD ASOS
ASOS STATION SIOUX FALLS AIRPORT /FSD/.
0554 AM HEAVY SNOW 3 N SIOUX FALLS 43.59N 96.73W
12/17/2016 M7.1 INCH MINNEHAHA SD OFFICIAL NWS OBS
.
0600 AM SNOW 3 N SIOUX FALLS 43.59N 96.73W
12/17/2016 M7.1 INCH MINNEHAHA SD CO-OP OBSERVER
CO-OP OBSERVER STATION SIOUX FALLS NWS
/FSDS2/.
0700 AM SNOW SUPERIOR 43.43N 94.95W
12/17/2016 E7.0 INCH DICKINSON IA FIRE DEPT/RESCUE
.
0951 PM SNOW ADRIAN 43.63N 95.93W
12/16/2016 M7.0 INCH NOBLES MN PUBLIC
SNOW ONGOING.
0929 PM SNOW WORTHINGTON 43.63N 95.60W
12/16/2016 E7.0 INCH NOBLES MN PUBLIC
SOCIAL MEDIA REPORT...SNOW ONGOING.
0751 AM SNOW ROUND LAKE 43.54N 95.47W
12/17/2016 E7.0 INCH NOBLES MN PUBLIC
.
0700 AM SNOW 4 WNW ROWENA 43.55N 96.63W
12/17/2016 M7.0 INCH MINNEHAHA SD COCORAHS
COCORAHS STATION 3 WNW ROWENA /SD-MH-82/.
0830 AM SNOW 3 WSW SIOUX FALLS 43.52N 96.79W
12/17/2016 M6.6 INCH MINNEHAHA SD COCORAHS
COCORAHS STATION SIOUX FALLS 3.4 WSW
/SD-MH-23/.
0700 AM SNOW 1 WNW LAKEFIELD 43.68N 95.18W
12/17/2016 M6.6 INCH JACKSON MN CO-OP OBSERVER
CO-OP OBSERVER STATION LAKEFIELD /LKFM5/.
0900 AM SNOW 1 ENE WALL LAKE 43.53N 96.95W
12/17/2016 M6.5 INCH MINNEHAHA SD COCORAHS
COCORAHS STATION WALL LAKE /SD-MH-8/.
0932 PM SNOW 1 S BRANDON 43.58N 96.58W
12/16/2016 M6.5 INCH MINNEHAHA SD PUBLIC
SOCIAL MEDIA REPORT...SNOW ONGOING.
0700 AM SNOW 3 SSE LAKE PARK 43.41N 95.30W
12/17/2016 E6.5 INCH DICKINSON IA EMERGENCY MNGR
.
0655 AM SNOW CHAMBERLAIN 43.81N 99.33W
12/17/2016 M6.4 INCH BRULE SD COCORAHS
COCORAHS STATION CHAMBERLAIN /SD-BL-1/.
0900 AM SNOW 3 SSE SIOUX FALLS 43.50N 96.71W
12/17/2016 M6.3 INCH MINNEHAHA SD COCORAHS
COCORAHS STATION 3 SSE SIOUX FALLS
/SD-MH-7/.
0915 AM SNOW 3 SSE SIOUX FALLS 43.50N 96.71W
12/17/2016 E6.3 INCH MINNEHAHA SD PUBLIC
.
1002 PM SNOW 4 WNW TERRIL 43.33N 95.05W
12/16/2016 M6.3 INCH DICKINSON IA PUBLIC
SOCIAL MEDIA REPORT...SNOW ONGOING.
0845 AM SNOW 3 NNE SIOUX FALLS 43.58N 96.71W
12/17/2016 E6.2 INCH MINNEHAHA SD TRAINED SPOTTER
.
0700 AM SNOW 8 SSW CHAMBERLAIN 43.71N 99.38W
12/17/2016 M6.1 INCH BRULE SD COCORAHS
COCORAHS STATION 6 S OACOMA /SD-BL-10/.
0700 AM SNOW 3 NW EVERLY 43.18N 95.37W
12/17/2016 M6.0 INCH CLAY IA CO-OP OBSERVER
CO-OP OBSERVER STATION 3 WNW EVERLY /EVYI4/.
0700 AM SNOW 2 NNE WORTHINGTON 43.65N 95.58W
12/17/2016 M6.0 INCH NOBLES MN CO-OP OBSERVER
CO-OP OBSERVER STATION WORTHINGTON /WRNM5/.
0800 AM SNOW 1 SW BROOKINGS 44.29N 96.80W
12/17/2016 M6.0 INCH BROOKINGS SD COCORAHS
COCORAHS STATION 1 SW BROOKINGS /SD-BK-3/.
0600 PM SNOW 2 S HURON 44.34N 98.22W
12/16/2016 M6.0 INCH BEADLE SD OFFICIAL NWS OBS
STORM TOTAL SNOW...SNOW ONGOING.
0800 AM SNOW PIPESTONE 44.00N 96.31W
12/17/2016 M6.0 INCH PIPESTONE MN MESONET
MESONET STATION PIPESTONE /PIPM5/.
0555 AM SNOW 2 NNW HURON 44.39N 98.23W
12/17/2016 M6.0 INCH BEADLE SD ASOS
ASOS STATION HURON REGIONAL AIRPORT /HON/.
0900 AM SNOW 6 W MADISON 44.00N 97.23W
12/17/2016 M6.0 INCH LAKE SD CO-OP OBSERVER
CO-OP OBSERVER STATION 2 E MADISON /MRFS2/.
0700 AM SNOW 2 S PUKWANA 43.75N 99.18W
12/17/2016 M6.0 INCH BRULE SD COCORAHS
COCORAHS STATION 1 S PUKWANA /SD-BL-11/.
0630 PM SNOW BREWSTER 43.70N 95.47W
12/16/2016 M6.0 INCH NOBLES MN PUBLIC
.
1056 PM SNOW 2 SW SIOUX FALLS 43.52N 96.76W
12/16/2016 M5.9 INCH MINNEHAHA SD BROADCAST MEDIA
SNOW ONGOING.
1000 PM SNOW MILFORD 43.33N 95.15W
12/16/2016 M5.8 INCH DICKINSON IA PUBLIC
SOCIAL MEDIA REPORT...SNOW ONGOING.
0700 AM SNOW 4 NNE SIBLEY 43.45N 95.71W
12/17/2016 M5.8 INCH OSCEOLA IA CO-OP OBSERVER
CO-OP OBSERVER STATION SIBLEY /SIBI4/.
0700 AM SNOW 4 SW SIOUX FALLS 43.50N 96.79W
12/17/2016 M5.7 INCH MINNEHAHA SD COCORAHS
COCORAHS STATION 3 SW SIOUX FALLS
/SD-MH-41/.
1000 AM SNOW 1 S HURON 44.35N 98.22W
12/17/2016 M5.5 INCH BEADLE SD COCORAHS
COCORAHS STATION 1 S HURON /SD-BD-20/.
1045 AM SNOW ARMOUR 43.32N 98.34W
12/17/2016 E5.5 INCH DOUGLAS SD EMERGENCY MNGR
.
1034 PM SNOW ROCK RAPIDS 43.43N 96.17W
12/16/2016 M5.5 INCH LYON IA PUBLIC
SOCIAL MEDIA REPORT...SNOW ONGOING.
0747 PM SNOW 4 N CURRIE 44.13N 95.68W
12/16/2016 M5.5 INCH MURRAY MN AMATEUR RADIO
.
0800 AM SNOW 2 SW SIOUX FALLS 43.53N 96.76W
12/17/2016 M5.4 INCH MINNEHAHA SD COCORAHS
COCORAHS STATION 1 SW SIOUX FALLS
/SD-MH-86/.
0700 AM SNOW 2 N CHESTER 43.93N 96.93W
12/17/2016 M5.2 INCH LAKE SD CO-OP OBSERVER
CO-OP OBSERVER STATION CHESTER 2N /CHES2/.
0950 PM SNOW LAKE PARK 43.45N 95.32W
12/16/2016 M5.2 INCH DICKINSON IA PUBLIC
SOCIAL MEDIA REPORT...SNOW ONGOING.
0700 AM SNOW 3 ESE DIXON 43.36N 99.42W
12/17/2016 M5.0 INCH GREGORY SD COCORAHS
COCORAHS STATION GREGORY 8.7 N /SD-GY-3/.
0700 AM SNOW WESTBROOK 44.04N 95.43W
12/17/2016 E5.0 INCH COTTONWOOD MN PUBLIC
.
0920 PM SNOW 3 NE CROOKS 43.69N 96.77W
12/16/2016 M5.0 INCH MINNEHAHA SD PUBLIC
SOCIAL MEDIA REPORT...SNOW ONGOING.
0700 AM SNOW 2 NE BURKE 43.21N 99.26W
12/17/2016 M5.0 INCH GREGORY SD COCORAHS
COCORAHS STATION BURKE 2.4 NE /SD-GY-17/.
0700 AM SNOW 1 WNW CANTON 43.31N 96.59W
12/17/2016 M5.0 INCH LINCOLN SD CO-OP OBSERVER
CO-OP OBSERVER STATION CANTON /CNNS2/.
0954 PM SNOW 5 SW IRENE 43.03N 97.23W
12/16/2016 M5.0 INCH YANKTON SD PUBLIC
SOCIAL MEDIA REPORT...SNOW ONGOING.
0630 AM SNOW 2 ESE YANKTON 42.88N 97.36W
12/17/2016 M5.0 INCH YANKTON SD CO-OP OBSERVER
CO-OP OBSERVER STATION 2 SE YANKTON /YTNS2/.
0700 AM SNOW WHITE LAKE 43.73N 98.72W
12/17/2016 M5.0 INCH AURORA SD CO-OP OBSERVER
CO-OP OBSERVER STATION WHITE LAKE /WITS2/.
1150 PM SNOW 2 S MITCHELL 43.70N 98.04W
12/16/2016 M4.9 INCH DAVISON SD CO-OP OBSERVER
CO-OP OBSERVER STATION MITCHELL /MCLS2/.
0556 AM SNOW 3 N MITCHELL 43.77N 98.04W
12/17/2016 M4.9 INCH DAVISON SD ASOS
ASOS STATION MITCHELL MUNICIPAL AIRPORT
/MHE/.
1002 PM SNOW ROCK RAPIDS 43.43N 96.17W
12/16/2016 M4.8 INCH LYON IA PUBLIC
SOCIAL MEDIA REPORT...SNOW ONGOING.
0830 AM SNOW 7 NNE CHAMBERLAIN 43.90N 99.25W
12/17/2016 M4.6 INCH BRULE SD COCORAHS
COCORAHS STATION CHAMBERLAIN 7.5 NNE
/SD-BL-13/.
0700 AM SNOW 2 SSW GAYVILLE 42.86N 97.18W
12/17/2016 M4.5 INCH YANKTON SD COCORAHS
COCORAHS STATION GAYVILLE 1.8 SSW /SD-YN-3/.
0738 PM SNOW 2 SSE MITCHELL 43.70N 98.02W
12/16/2016 M4.5 INCH DAVISON SD PUBLIC
SOCIAL MEDIA REPORT.
0800 PM SNOW ELLSWORTH 43.52N 96.02W
12/16/2016 M4.5 INCH NOBLES MN PUBLIC
SNOW ONGOING.
1006 AM SNOW SUTHERLAND 42.97N 95.50W
12/17/2016 U4.5 INCH O'BRIEN IA PUBLIC
.
1151 AM SNOW BOYDEN 43.19N 96.00W
12/17/2016 E4.5 INCH SIOUX IA PUBLIC
FROM SOCIAL MEDIA.
0700 AM SNOW 1 SE VERMILLION 42.77N 96.91W
12/17/2016 M4.5 INCH CLAY SD COCORAHS
COCORAHS STATION 1 ESE VERMILLION
/SD-CY-10/.
1000 PM SNOW 4 SSE SIOUX FALLS 43.49N 96.71W
12/16/2016 M4.3 INCH LINCOLN SD NWS EMPLOYEE
SNOW ONGOING.
0934 PM SNOW HERON LAKE 43.80N 95.32W
12/16/2016 M4.3 INCH JACKSON MN PUBLIC
SOCIAL MEDIA REPORT...SNOW ONGOING.
0931 PM SNOW DELL RAPIDS 43.83N 96.72W
12/16/2016 M4.3 INCH MINNEHAHA SD PUBLIC
SOCIAL MEDIA REPORT...SNOW ONGOING.
0900 PM SNOW 3 SSE SIOUX FALLS 43.50N 96.71W
12/16/2016 M4.3 INCH MINNEHAHA SD TRAINED SPOTTER
STORM TOTAL SNOW...SNOW ONGOING.
0700 AM SNOW SHELDON 43.18N 95.85W
12/17/2016 M4.1 INCH O'BRIEN IA CO-OP OBSERVER
CO-OP OBSERVER STATION SHELDON /SHDI4/.
0700 AM SNOW 9 S DALLAS 43.11N 99.49W
12/17/2016 M4.0 INCH GREGORY SD COCORAHS
COCORAHS STATION 8 S DALLAS /SD-GY-1/.
1103 AM SNOW PIPESTONE 44.00N 96.32W
12/17/2016 E4.0 INCH PIPESTONE MN PUBLIC
.
0935 PM SNOW ROCK VALLEY 43.20N 96.30W
12/16/2016 M4.0 INCH SIOUX IA PUBLIC
SOCIAL MEDIA REPORT...SNOW ONGOING.
0700 AM SNOW 4 SW BURKE 43.14N 99.35W
12/17/2016 M4.0 INCH GREGORY SD COCORAHS
COCORAHS STATION 4 SW BURKE /SD-GY-15/.
1033 PM SNOW 5 WSW SIOUX FALLS 43.53N 96.83W
12/16/2016 M4.0 INCH MINNEHAHA SD PUBLIC
SOCIAL MEDIA REPORT...SNOW ONGOING.
0900 PM SNOW 3 SW SIOUX FALLS 43.51N 96.77W
12/16/2016 M4.0 INCH MINNEHAHA SD BROADCAST MEDIA
STORM TOTAL SNOW...SNOW ONGOING.
0950 PM SNOW 1 SSW PIPESTONE 43.99N 96.33W
12/16/2016 M4.0 INCH PIPESTONE MN PUBLIC
SOCIAL MEDIA REPORT...SNOW ONGOING.
0600 AM SNOW AURORA 44.28N 96.69W
12/17/2016 E4.0 INCH BROOKINGS SD PUBLIC
REPORTED VIA SOCIAL MEDIA.
0947 PM SNOW LAKE BENTON 44.26N 96.30W
12/16/2016 M4.0 INCH LINCOLN MN TRAINED SPOTTER
SNOW ONGOING.
0845 AM SNOW 3 N SIOUX CENTER 43.12N 96.17W
12/17/2016 E4.0 INCH SIOUX IA COCORAHS
.
0944 PM SNOW 1 W MADISON 44.01N 97.13W
12/16/2016 M4.0 INCH LAKE SD EMERGENCY MNGR
SNOW ONGOING.
0700 AM SNOW 3 N SIOUX CENTER 43.11N 96.18W
12/17/2016 M4.0 INCH SIOUX IA COCORAHS
COCORAHS STATION 2 NNW SIOUX CENTER
/IA-SX-7/.
0742 PM SNOW 2 S MITCHELL 43.70N 98.04W
12/16/2016 M3.9 INCH DAVISON SD CO-OP OBSERVER
STORM TOTAL SNOW...LIGHT SNOW ONGOING.
0700 PM SNOW IROQUOIS 44.36N 97.85W
12/16/2016 M3.7 INCH KINGSBURY SD CO-OP OBSERVER
.
0630 AM SNOW HOWARD 44.02N 97.52W
12/17/2016 M3.6 INCH MINER SD CO-OP OBSERVER
CO-OP OBSERVER STATION HOWARD /HOWS2/.
0800 AM SNOW LAKE WILSON 44.00N 95.95W
12/17/2016 M3.5 INCH MURRAY MN CO-OP OBSERVER
CO-OP OBSERVER STATION LAKE WILSON /LKWM5/.
0700 AM SNOW 8 SSW HERRICK 43.00N 99.23W
12/17/2016 M3.5 INCH GREGORY SD COCORAHS
COCORAHS STATION 7 WNW NAPER /SD-GY-12/.
0800 AM SNOW 5 W BRUCE 44.43N 97.00W
12/17/2016 M3.5 INCH BROOKINGS SD COCORAHS
COCORAHS STATION 5 W BRUCE /SD-BK-45/.
1200 AM SNOW 4 NW OKOBOJI 43.43N 95.18W
12/17/2016 M3.5 INCH DICKINSON IA CO-OP OBSERVER
CO-OP OBSERVER STATION VICKS CORNER-SPIRIT
LAKE IOWA /VICI4/.
0700 AM SNOW 1 S BROOKINGS 44.29N 96.79W
12/17/2016 M3.5 INCH BROOKINGS SD COCORAHS
COCORAHS STATION 1 S BROOKINGS /SD-BK-43/.
0700 AM SNOW 1 S MARSHALL 44.44N 95.79W
12/17/2016 M3.5 INCH LYON MN COCORAHS
COCORAHS STATION MARSHALL 0.6 S /MN-LY-2/.
0800 AM SNOW TYNDALL 42.99N 97.86W
12/17/2016 M3.5 INCH BON HOMME SD CO-OP OBSERVER
CO-OP OBSERVER STATION TYNDALL /TYNS2/.
0700 AM SNOW BROOKINGS 44.30N 96.79W
12/17/2016 M3.2 INCH BROOKINGS SD COCORAHS
COCORAHS STATION BROOKINGS /SD-BK-7/.
0830 PM SNOW PIPESTONE 44.00N 96.32W
12/16/2016 M3.0 INCH PIPESTONE MN PUBLIC
SNOW ONGOING.
0546 PM SNOW ROCK RAPIDS 43.43N 96.17W
12/16/2016 M3.0 INCH LYON IA PUBLIC
SOCIAL MEDIA REPORT...SNOW ONGOING.
0905 AM SNOW 4 SE SIOUX CITY 42.46N 96.34W
12/17/2016 E3.0 INCH WOODBURY IA TRAINED SPOTTER
.
1000 AM SNOW 6 NNE ELK POINT 42.76N 96.65W
12/17/2016 M3.0 INCH UNION SD COCORAHS
COCORAHS STATION 2 W WESTFIELD /SD-UN-2/.
0330 PM SNOW 1 SSE MITCHELL 43.71N 98.03W
12/16/2016 M3.0 INCH DAVISON SD BROADCAST MEDIA
.
0800 AM SNOW 1 NNW MARSHALL 44.47N 95.80W
12/17/2016 M3.0 INCH LYON MN CO-OP OBSERVER
CO-OP OBSERVER STATION MARSHALL /MMLM5/.
1133 PM SNOW BOYDEN 43.19N 96.00W
12/16/2016 M3.0 INCH SIOUX IA PUBLIC
SOCIAL MEDIA REPORT.
1000 AM SNOW 1 SSE VERMILLION 42.76N 96.92W
12/17/2016 M3.0 INCH CLAY SD CO-OP OBSERVER
CO-OP OBSERVER STATION 2 SE VERMILLION
/VRMS2/.
0700 AM SNOW DE SMET 44.38N 97.55W
12/17/2016 M3.0 INCH KINGSBURY SD COCORAHS
COCORAHS STATION DE SMET /SD-KY-5/.
0700 AM SNOW ORANGE CITY 43.00N 96.05W
12/17/2016 M3.0 INCH SIOUX IA CO-OP OBSERVER
CO-OP OBSERVER STATION ORANGE CITY /ORCI4/.
0800 AM SNOW 1 ESE WHITE 44.43N 96.62W
12/17/2016 M3.0 INCH BROOKINGS SD COCORAHS
COCORAHS STATION 1 ESE WHITE /SD-BK-33/.
0800 AM SNOW 1 NE BROOKINGS 44.32N 96.77W
12/17/2016 M3.0 INCH BROOKINGS SD CO-OP OBSERVER
CO-OP OBSERVER STATION 2 NE BROOKINGS
/BROS2/.
0945 PM SNOW 1 S MARSHALL 44.44N 95.79W
12/16/2016 M3.0 INCH LYON MN TRAINED SPOTTER
.
0845 PM SNOW SHELDON 43.18N 95.85W
12/16/2016 M3.0 INCH O'BRIEN IA CO-OP OBSERVER
.
0930 PM SNOW 1 S WINDOM 43.86N 95.12W
12/16/2016 M2.8 INCH COTTONWOOD MN CO-OP OBSERVER
SNOW ONGOING.
0445 PM SNOW MADISON 44.01N 97.11W
12/16/2016 M2.8 INCH LAKE SD EMERGENCY MNGR
.
1045 AM SNOW 2 SSE NORTH SIOUX CITY 42.50N 96.49W
12/17/2016 E2.7 INCH UNION SD BROADCAST MEDIA
.
0700 AM SNOW 11 N COLMAN 44.14N 96.80W
12/17/2016 M2.5 INCH MOODY SD COCORAHS
COCORAHS STATION COLMAN 10.6 N /SD-MY-11/.
0730 AM SNOW PICKSTOWN 43.07N 98.53W
12/17/2016 M2.5 INCH CHARLES MIX SD CO-OP OBSERVER
CO-OP OBSERVER STATION PICKSTOWN /PKSS2/.
0708 PM SNOW TEA 43.45N 96.84W
12/16/2016 M2.5 INCH LINCOLN SD PUBLIC
.
1200 AM SNOW TYNDALL 42.99N 97.87W
12/17/2016 M2.5 INCH BON HOMME SD CO-OP OBSERVER
.
0900 AM SNOW 1 WSW SIOUX CITY 42.50N 96.41W
12/17/2016 E2.5 INCH WOODBURY IA BROADCAST MEDIA
2-3 INCHES OF SNOW ON THE NORTHSIDE OF SIOUX
CITY.
0700 AM SNOW 1 NNW AKRON 42.84N 96.56W
12/17/2016 M2.4 INCH PLYMOUTH IA MESONET
MESONET STATION AKRON /AKRI4/.
0400 PM SNOW 4 ESE SIOUX FALLS 43.53N 96.66W
12/16/2016 M2.2 INCH MINNEHAHA SD NWS EMPLOYEE
.
0552 AM SNOW 1 WSW SERGEANT BLUFF 42.39N 96.38W
12/17/2016 M2.2 INCH WOODBURY IA ASOS
ASOS STATION SIOUX GATEWAY AIRPORT /SUX/.
0450 AM SNOW 1 E LE MARS 42.79N 96.15W
12/17/2016 E2.2 INCH PLYMOUTH IA TRAINED SPOTTER
REPORTED VIA SOCIAL MEDIA.
1100 AM SNOW REMSEN 42.81N 95.98W
12/17/2016 M2.1 INCH PLYMOUTH IA CO-OP OBSERVER
CO-OP OBSERVER STATION REMSEN NO. 2 /RMSI4/.
0800 AM SNOW 2 S ORANGE CITY 42.97N 96.06W
12/17/2016 M2.0 INCH SIOUX IA COCORAHS
COCORAHS STATION 2 S ORANGE CITY /IA-SX-6/.
0345 PM SNOW 4 WNW ROWENA 43.54N 96.62W
12/16/2016 M2.0 INCH MINNEHAHA SD NWS EMPLOYEE
.
0500 PM SNOW TYNDALL 42.99N 97.87W
12/16/2016 M1.8 INCH BON HOMME SD CO-OP OBSERVER
SNOW ONGOING.
0114 AM SNOW LE MARS 42.79N 96.17W
12/17/2016 E1.5 INCH PLYMOUTH IA PUBLIC
.
0244 PM SNOW 3 SW SIOUX FALLS 43.51N 96.77W
12/16/2016 M1.3 INCH MINNEHAHA SD BROADCAST MEDIA
.
0600 PM SNOW SERGEANT BLUFF 42.40N 96.36W
12/16/2016 M1.0 INCH WOODBURY IA OFFICIAL NWS OBS
.
1235 AM SNOW PONCA 42.57N 96.71W
12/17/2016 M1.0 INCH DIXON NE PUBLIC
SOCIAL MEDIA REPORT.
0345 PM SNOW 1 NNW PIPESTONE 44.01N 96.32W
12/16/2016 M1.0 INCH PIPESTONE MN PUBLIC
.
0330 PM SNOW 1 NNW SHELDON 43.19N 95.85W
12/16/2016 M1.0 INCH O'BRIEN IA CO-OP OBSERVER
.
0600 AM SNOW SERGEANT BLUFF 42.41N 96.36W
12/17/2016 M0.6 INCH WOODBURY IA CO-OP OBSERVER
CO-OP OBSERVER STATION SNOW PAID FOR KSUX
/SUXI4/.
0338 PM SNOW 2 SSE SIOUX CENTER 43.06N 96.15W
12/16/2016 M0.5 INCH SIOUX IA CO-OP OBSERVER
.
0800 AM SNOW 2 E CONCORD 42.38N 96.96W
12/17/2016 M0.5 INCH DIXON NE CO-OP OBSERVER
CO-OP OBSERVER STATION NORTHEAST EXPERIMENT
STATION /NESN1/.
0543 PM SNOW 2 SSE NORTH SIOUX CITY 42.50N 96.49W
12/16/2016 M0.5 INCH UNION SD BROADCAST MEDIA
.
&&
NWS SIOUX FALLS SD
IRIS SYSTEMPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1201 PM CST SAT DEC 17 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1201 PM SNOW 1 N WESTBROOK 44.05N 95.43W
12/17/2016 M5.0 INCH COTTONWOOD MN PUBLIC
FROM SOCIAL MEDIA.
&&
NWS SIOUX FALLS SD
IRIS SYSTEMPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1217 PM CST SAT DEC 17 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1217 PM SNOW FLANDREAU 44.05N 96.60W
12/17/2016 E6.0 INCH MOODY SD PUBLIC
FROM SOCIAL MEDIA.
&&
NWS SIOUX FALLS SD
IRIS SYSTEMPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1220 PM CST SAT DEC 17 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1220 PM HEAVY SNOW LESTER 43.44N 96.33W
12/17/2016 E7.3 INCH LYON IA PUBLIC
FROM SOCIAL MEDIA.
&&
NWS SIOUX FALLS SD
IRIS SYSTEMThe national radar mosaic for the moment the first event began.
24 cold/wind chill. Local standard time, as filed.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 31 below zero at Huron.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 28 below zero at Brookings.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero, including a record of 29 below zero at Howard.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero, including a record of 31 below zero near Madison.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 23 below zero 5 miles south of Chamberlain.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 25 below zero at White Lake.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 28 below zero at Mitchell.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 27 below zero at Sioux Falls.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 40 to 50 below zero. Actual temperatures dropped to colder than 20 below zero.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 35 to 45 below zero. Actual temperatures dropped to colder than 20 below zero.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 35 to 45 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 26 below zero near Academy.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 35 to 45 below zero. Actual temperatures dropped to colder than 20 below zero.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 35 to 45 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 26 below zero at Menno.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 35 to 45 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 23 below zero at Tyndall.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 35 to 45 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 27 below zero near Yankton.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 35 to 45 below zero. Actual temperatures dropped to colder than 20 below zero, including a record 26 below zero near Vermillion.
Strong northwest winds on December 17th, decreasing to around 10 mph during the night of the 17th, combined with falling temperatures to lower wind chill readings to 35 to 45 below zero. Actual temperatures dropped to colder than 20 below zero.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2016Every state in 2016This day in weather historyWarnings in South Dakota, December 2016
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: 664394, 664395, 664396, 664397, 664398, 664399, 664443, 664444, 664445, 664446, 664447, 664448, 664449, 664450, 664451, 664452, 664453, 664454, 664455, 664456, 664457, 664458, 664459, 664460.