Snow, accompanied by generally light winds, accumulated 3 to 5 inches during the daytime hours on December 7th.
Every event with a place to put it; 3 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.
Snow, accompanied by generally light winds, accumulated 3 to 5 inches during the daytime hours on December 7th.
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 7, 5:45 AM CST, 1 hour 15 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
3 winter weather. Local standard time, as filed.
Snow accumulated 2 to 4 inches, with the greater accumulations in the northeast part of Beadle County. Huron Airport received 3 inches. Winds were generally light during the snowfall.
Snow accumulated 3 to 5 inches, including 5 inches at De Smet, and 4 inches at Arlington. Winds were generally light during the snowfall.
Snow accumulated 2 to 4 inches, with the heavier accumulations in the northwest part of Brookings County. Winds were generally light during the snowfall.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2012Every state in 2012This day in weather historyWarnings in South Dakota, December 2012
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: 426049, 426051, 426052.