A clipper system brought a band of light to moderate snowfall across southeast South Dakota, northeast Nebraska, and northwest Iowa during the early morning through midday hours of December 13. With northerly winds as much as 15 to 30 mph, a strong arctic high-pressure area plunged through the Northern Plains through December 14 with dangerously cold conditions and wind chills as low as -20…
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.
A clipper system brought a band of light to moderate snowfall across southeast South Dakota, northeast Nebraska, and northwest Iowa during the early morning through midday hours of December 13. With northerly winds as much as 15 to 30 mph, a strong arctic high-pressure area plunged through the Northern Plains through December 14 with dangerously cold conditions and wind chills as low as -20 degrees F to -35 degrees F.
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 12, 10:49 PM CST, 2 hours 11 minutes earlier. Its key messages:
Area Forecast Discussion
National Weather Service Sioux Falls SD
1049 PM CST Fri Dec 12 2025
.KEY MESSAGES...
- Patchy blowing and falling snow may reduce visibilities
through the early evening hours, so use extra caution on the
roads during the evening commute.
- Another round of snow moves in late tonight and continues into
tomorrow morning. 2-4" of snow is expected mainly near and
south of I-90, with a low-to-medium chance (20-50%) of a few
spots seeing greater than 4 inches of snow.
- An influx of arctic air over the weekend will lead to cold
temperatures and even colder winds chills especially by Sunday
morning. Wind chill values as low as -30 degrees are expected.
- Quieter conditions return by next week with a shift towards
milder temperatures by midweek.
&&
.DISCUSSION...
Issued at 248 PM CST Fri Dec 12 2025
It's been a cold and breezy day on our Friday as
temperatures have fallen throughout the day. We are currently
sitting in the single digits to low 10s above zero, but wind chills
are below zero for most of the area. Winds have been able to blow
the fresh snow pack around, and additional light snow has reduced
visibilities from time to time today. This will continue for
the next few hours, so continue to use extra caution on the
roads. Falling snow and winds will diminish this evening, but
the break from falling snow will be short-lived as our next
winter system is set to move in around midnight tonight, which
we'll discuss below.
After some lingering light snow this evening over south-central
South Dakota, a new band of snow will develop and move into our area
west of the James River around midnight and quickly expand
southeastward. The band of snow will intensify a bit around
daybreak and then exit off to our south and east around noon.
So a quick-moving system, but will have rates up to 0.75" an
hour leading to a stripe of 2-4" of snow across parts of the
area when all said and done. The favored areas for this stripe
for these amounts will be near and south of I-90. Can't rule
out an even narrower band of 4-6" somewhere within the general
2-4", but guidance today has become less excited on the
potential for 4+ inches. Currently, the chance of at least 4
inches of snow or greater is around 20-50%, with the chance of
at least 6 inches now less than 20%. The chance of 1" per hour
snowfall rates have also come down a bit according to the 12z
HREF compared to the run last night. For areas north of I-90,
amounts look to drop of quickly from south to north, but
overall the current Winter Weather Advisory remains in good
shape.
Attention then turns to the colder weather that will move in after
the snow. Wind chills are set to drop to as low as 30 degrees below
zero Saturday night into Sunday morning, and for that reason, a Cold
Weather Advisory has been issued for all of southwest Minnesota,
most of northwest Iowa, and a large part of east-central South
Dakota. Winds will be fairly light Saturday night, but with air
temperatures dropping to the teens below zero within the Cold
Weather Advisory, any light wind will result in these dangerously
cold wind chills through much of Sunday morning. From here,
temperatures will warm-up fairly quickly, with highs by Sunday
afternoon in the teens and 20s above zero. After another cold night
Sunday night, temperatures warm-up further into Monday as highs then
look to climb near the freezing mark.
Tuesday and Wednesday will be the warmest days next week, with highs
in the 30s and 40s. Temperatures will be knocked back down a
peg Wednesday night into Thursday, but it won't get nearly as
cold as what we'll see this weekend. In fact, temperatures will
be overall seasonal to close out the next work week. A quieter
pattern also sets up, with only small rain chances north of I-90
late Wednesday into early Thursday at this time.
&&
.AVIATION /06Z TAFS THROUGH 06Z SUNDAY/...
Issued at 1046 PM CST Fri Dec 12 2025
MVFR stratus and the next round of snow are still expected to
move into the area overnight, moving southeast through the
morning and early afternoon hours. Beginning to see some light
returns on radar as well as some snow on the DOT cameras across
south central SD. Once VFR conditions deteriorate, we should
remain MVFR to IFR with the snow. MVFR stratus may linger
through the late afternoon, with some improvements and return to
VFR through the evening hours.
Northerly winds remain light through much of the period, with
gusts around 20 knots during the afternoon.
&&
.FSD WATCHES/WARNINGS/ADVISORIES...
SD...Winter Weather Advisory until noon CST Saturday for SDZ038-050-
052>054-057>071.
Cold Weather Advisory from 6 PM Saturday to 10 AM CST Sunday
for SDZ038>040-053>056-059>062-065>067.
MN...Cold Weather Advisory from 6 PM Saturday to 10 AM CST Sunday
for MNZ071-072-080-081-089-090-097-098.
IA...Winter Weather Advisory until noon CST Saturday for IAZ001-012-
013-020>022-031-032.
Cold Weather Advisory from 6 PM Saturday to 10 AM CST Sunday
for IAZ001>003-012>014-021-022-032.
NE...Winter Weather Advisory until noon CST Saturday for NEZ013-014.
&&
DISCUSSION...Samet
AVIATION...SGHazardous Weather Outlook National Weather Service Sioux Falls SD 552 PM CST Fri Dec 12 2025 IAZ001-012-013-020>022-031-032-NEZ013-014-SDZ038-050-052>054-057>071- 140000- Lyon-Sioux-O'Brien-Plymouth-Cherokee-Buena Vista-Woodbury-Ida-Dixon- Dakota-Beadle-Gregory-Jerauld-Sanborn-Miner-Brule-Aurora-Davison- Hanson-McCook-Minnehaha-Charles Mix-Douglas-Hutchinson-Turner- Lincoln-Bon Homme-Yankton-Clay-Union- 552 PM CST Fri Dec 12 2025 This Hazardous Weather Outlook is for northwest Iowa, west central Iowa, northeast Nebraska, central South Dakota, east central South Dakota, south central South Dakota and southeast South Dakota. .DAY ONE...Tonight. Wind gusts up to 30 mph this evening may lead to patchy blowing and drifting snow. Flurries to light snow with minimal accumulation continues along the Missouri River Valley and into northwestern Iowa through this evening. Light to moderate snowfall chances return toward and after midnight tonight. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Light to moderate snowfall continues through Saturday morning, tapering off from west to east by the afternoon. Total accumulations of 2-4 inches of snow are expected south of a Huron to Sioux Falls to Storm Lake line with isolated higher amounts possible toward the Missouri River Valley. Dangerously cold wind chills settle in for the upcoming weekend. Daytime wind chills remain below zero. Coldest wind chills Saturday night into Sunday morning range from 20 to 30 below zero. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. IAZ002-003-014-MNZ071-072-080-081-089-090-097-098-SDZ039-040-055-056- 140000- Osceola-Dickinson-Clay-Lincoln-Lyon-Murray-Cottonwood-Nobles-Jackson- Pipestone-Rock-Kingsbury-Brookings-Lake-Moody- 552 PM CST Fri Dec 12 2025 This Hazardous Weather Outlook is for northwest Iowa, southwest Minnesota and east central South Dakota. .DAY ONE...Tonight. Wind gusts up to 30 mph this evening may lead to patchy blowing and drifting snow. Light to moderate snowfall chances return after midnight tonight. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Light to moderate snowfall continues through Saturday morning, tapering off from west to east by the afternoon. Total accumulations of 2 inches or less expected. Dangerously cold wind chills settle in for the upcoming weekend. Daytime wind chills remain below zero. Coldest wind chills Saturday night into Sunday morning range from 20 to 30 below zero. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The national radar mosaic for the moment the first event began.
2 winter weather. Local standard time, as filed.
Snowfall totaled 3.3 inches near Ponca, 5.1 inches 2 miles west-northwest of Jefferson, and 4.2 inches in Sergeant Bluff.
Snowfall totaled 4.0 inches in Newcastle and 3.3 inches near Ponca.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nebraska in 2025Every state in 2025This day in weather historyWarnings in Nebraska, December 2025
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: 1307191, 1307193.