Cold/Wind Chill, Mellette
- When
- December 30, 6:00 PM CST to December 31, 11:59 PM CST
- Where
- Mellette forecast zone
- Reported by
- Mesonet
- Coordinates
- 43.581, -100.760 (the zone’s center; the record gives no point)
An Arctic airmass settled over the area, with high temperatures remaining below zero in most areas and low temperatures dropping to 15 below to 35 below zero, with the lowest values over northwestern South Dakota. Wind chills as low as 45 below zero developed over northwestern South Dakota.
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 UNR wrote it up.
An Arctic airmass settled over the area, with high temperatures remaining below zero in most areas and low temperatures dropping to 15 below to 35 below zero, with the lowest values over northwestern South Dakota. Wind chills as low as 45 below zero developed over northwestern South Dakota.
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 Rapid City, SD wrote its last area forecast discussion before the first event at Dec 30, 5:33 PM CST, 27 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
24 cold/wind chill. Local standard time, as filed.
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, December 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: 731251, 731263, 731265, 731246, 731247, 731248, 731249, 731250, 731252, 731253, 731254, 731255, 731257, 731258, 731259, 731260, 731261, 731262, 731266, 731267, 731268, 731271, 731272, 731274.