A major Winter Storm moved through the area producing widespread heavy snow and very strong winds of 30 to 45 mph creating widespread blizzard conditions. Many areas reported visibilities below a half mile.
Every event with a place to put it; 5 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 major Winter Storm moved through the area producing widespread heavy snow and very strong winds of 30 to 45 mph creating widespread blizzard conditions. Many areas reported visibilities below a half mile.
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 Feb 23, 2:38 PM CST, 22 minutes earlier.
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</html>Hazardous Weather Outlook National Weather Service Sioux Falls SD 438 AM CST Thu Feb 23 2017 IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097- 098-NEZ013-014-SDZ056-062-067-070-071-241045- Lyon IA-Osceola-Dickinson-Sioux-O'Brien-Clay IA-Plymouth-Cherokee- Buena Vista-Woodbury-Ida-Lincoln MN-Lyon MN-Murray-Cottonwood- Nobles-Jackson-Pipestone-Rock-Dixon-Dakota-Moody-Minnehaha- Lincoln SD-Clay SD-Union- 438 AM CST Thu Feb 23 2017 This Hazardous Weather Outlook is for portions of northwest Iowa, west central Iowa, southwest Minnesota, northeast Nebraska, east central South Dakota, and southeast South Dakota. .DAY ONE...Today and Tonight Snow will spread into the area through the late morning and afternoon, possibly beginning as a mix of rain and snow. Snow will become heavy at times tonight, with significant accumulations likely, especially southeast of Highway 60 in northwest Iowa, where isolated thunder may enhance snowfall rates this evening. In addition, increasing northerly winds are likely, creating periods of near zero visibility due to falling and blowing snow. .DAYS TWO THROUGH SEVEN...Friday through Wednesday Snow will gradually diminish across the area by Friday afternoon. At this time, the highest total accumulations are expected near and southeast of Highway 60 in northwest Iowa and southwest Minnesota, where localized amounts in excess of a foot are possible by late Friday afternoon. The strong winds will continue to produce reduced visibility in areas of blowing and drifting snow into Friday evening, especially in the areas of heaviest snowfall. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. However, reports of snowfall and visibility would be greatly appreciated. SDZ050-055-057>061-063>066-068-069-241045- Gregory-Lake-Brule-Aurora-Davison-Hanson-McCook-Charles Mix- Douglas-Hutchinson-Turner-Bon Homme-Yankton- 438 AM CST Thu Feb 23 2017 This Hazardous Weather Outlook is for portions of east central South Dakota, south central South Dakota, and southeast South Dakota. .DAY ONE...Today and Tonight Snow will spread into the area through this morning, possibly beginning as a mix of rain and snow in some areas. Snow will become heavy at times this afternoon and evening, with significant accumulations likely. In addition, increasing northerly winds are likely, creating periods of low visibility in falling and blowing snow. .DAYS TWO THROUGH SEVEN...Friday through Wednesday Snow will gradually diminish across the area Friday morning. At this time, storm total accumulations averaging 5 to 10 inches are anticipated, with the highest total accumulations south of Highway 18. The strong winds will continue to produce reduced visibility in areas of blowing and drifting snow through midday Friday. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. However, reports of snowfall and visibility would be greatly appreciated. SDZ038>040-052>054-241045- Beadle-Kingsbury-Brookings-Jerauld-Sanborn-Miner- 438 AM CST Thu Feb 23 2017 This Hazardous Weather Outlook is for portions of central South Dakota and east central South Dakota. .DAY ONE...Today and Tonight Snow will spread into the area this afternoon, then continue through tonight. Increasing northerly winds will also create areas of blowing and drifting snow. .DAYS TWO THROUGH SEVEN...Friday through Wednesday Snow will gradually diminish across the area Friday morning. At this time, storm total accumulations averaging 2 to 5 inches are anticipated. The strong winds will continue to produce reduced visibility in areas of blowing and drifting snow through midday Friday. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. However, reports of snowfall and visibility would be greatly appreciated.
The national radar mosaic for the moment the first event began.
5 blizzard. Local standard time, as filed.
Snowfall of 4 to 8 inches combined with strong winds of 40 to 45 mph created blizzard conditions with visibilities below a half mile.
Snowfall of 4 to 8 inches combined with strong winds of 40 to 45 mph created blizzard conditions with visibilities below a half mile.
Snowfall of 3 to 5 inches combined with strong winds of 40 to 45 mph created blizzard conditions with visibilities below a half mile.
Snowfall of 6 to 10 inches combined with strong winds of 40 to 45 mph created widespread blizzard conditions with visibilities below a half mile. Local authorities were recommending no travel due to road and weather conditions.
Snowfall of 6 to 10 inches combined with strong winds of 40 to 45 mph created widespread blizzard conditions with visibilities below a half mile. Local authorities were recommending no travel due to road and weather conditions.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2017Every state in 2017This day in weather historyWarnings in South Dakota, February 2017
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: 671187, 671188, 671186, 672405, 672406.