A secondary arctic frontal zone crashed southeast across the region with yet another increase in winds, spotty light snowfall, and patchy blowing snow.
Every event with a place to put it; 4 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 secondary arctic frontal zone crashed southeast across the region with yet another increase in winds, spotty light snowfall, and patchy blowing snow.
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 Jan 18, 11:42 AM CST, 48 minutes earlier.
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</html>Hazardous Weather Outlook National Weather Service Sioux Falls SD 403 AM CST Sun Jan 18 2026 IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097- 098-NEZ013-014-SDZ038>040-050-052>071-191015- Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Plymouth-Cherokee- Buena Vista-Woodbury-Ida-Lincoln-Murray-Cottonwood-Nobles-Jackson- Pipestone-Rock-Dixon-Dakota-Beadle-Kingsbury-Brookings-Gregory- Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison-Hanson- McCook-Minnehaha-Charles Mix-Douglas-Hutchinson-Turner-Bon Homme- Yankton-Union- 403 AM CST Sun Jan 18 2026 This Hazardous Weather Outlook is for portions of northwest Iowa, west central Iowa, southwest Minnesota, northeast Nebraska, central South Dakota, east central South Dakota, south central South Dakota, and southeast South Dakota. .DAY ONE...Today and Tonight Brief near whiteout conditions will be possible throughout the late morning into the afternoon. This will be due to scattered snow showers coupled with wind gusts of 50 to 55 mph. Later tonight into Monday morning, wind chills will fall to 15 below to 30 below, with the coldest readings across southwest MN and nearby locations. .DAYS TWO THROUGH SEVEN...Monday through Saturday Periodic chances for light snow are expected neat week, with the impacts expected to be on the minor side. Temperatures next weekend may be well below normal. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The national radar mosaic for the moment the first event began.
4 high wind. Local standard time, as filed.
Sustained winds reached 40 to 44 mph at times with a peak gust of 58 mph at a South Dakota Road Weather Information System site 8 miles east of Alpena.
Sustained winds reached 30 to 40 mph at times with a peak gust of 58 mph at an Automated Surface Observing System Site at Mitchell.
Sustained winds reached 40 to 42 mph at times with a peak gust of 58 mph at a South Dakota Road Weather Information System site 4 miles north of Dolton.
Sustained winds reached around 40 mph at times with a peak gust of 58 mph at a South Dakota Road Weather Information System site 10 miles north of Yankton.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2026Every state in 2026This day in weather historyWarnings in South Dakota, January 2026
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 2026-10-01. Each event’s entry at NCEI: 1315245, 1315252, 1315272, 1315279.