Alert archive / South Dakota / Winter Storm Warnings / 2021
Winter Storm Warnings in South Dakota, December 2021
4 winter storm warnings in December 2021. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of winter storm warnings reaches back to 2005.
Winter Storm Warnings by county
Each county as a circle sized by its count in December 2021. Tap one for its archive.
- Winter Storm Warnings
- 4
- Busiest day
- December 9, 20212 winter storm warnings
Over time
By day
Days in UTC, the clock the archive keeps.
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 9, 3:10 AM CST | Winter Storm Warning | UNR | Bennett, Custer, Fall River, Jackson, Mellette, Oglala Lakota and 3 more | 39 hr |
| Dec 9, 11:23 AM CST | Winter Storm Warning | FSD | Aurora, Bon Homme, Brookings, Brule, Charles Mix, Clay and 16 more | 40 hr |
| Dec 10, 2:11 AM CST | Winter Storm Warning | ABR | Buffalo, Jones, Lyman | 16 hr |
| Dec 17, 6:29 PM CST | Winter Storm Warning | ABR | Brown, Day, Marshall, Roberts | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bennett County1
- Custer County1
- Fall River County1
- Jackson County1
- Mellette County1
- Oglala Lakota County1
- Pennington County1
- Todd County1
- Tripp County1
- Aurora County1
- Bon Homme County1
- Brookings County1
- Brule County1
- Charles Mix County1
- Clay County1
- Davison County1
- Douglas County1
- Gregory County1
- Hanson County1
- Hutchinson County1
- Jerauld County1
- Lake County1
- Lincoln County1
- McCook County1
- Miner County1
- Minnehaha County1
- Moody County1
- Sanborn County1
- Turner County1
- Union County1
- Yankton County1
- Buffalo County1
- Jones County1
- Lyman County1
- Brown County1
- Day County1
- Marshall County1
- Roberts County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.