Alert archive / South Dakota / Severe Thunderstorm Warnings / 2021
Severe Thunderstorm Warnings in South Dakota, May 2021
22 severe thunderstorm warnings in May 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 severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in May 2021. Tap one for its archive.
- Severe Thunderstorm Warnings
- 22
- Busiest day
- May 24, 20219 severe thunderstorm 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 |
|---|---|---|---|---|
| May 19, 8:17 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 33 min |
| May 20, 11:58 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Meade, Pennington | 47 min |
| May 21, 12:41 AM CDT | Severe Thunderstorm Warning | UNR | Haakon, Pennington, Ziebach | 49 min |
| May 21, 1:27 AM CDT | Severe Thunderstorm Warning | UNR | Haakon, Ziebach | 41 min |
| May 21, 2:33 AM CDT | Severe Thunderstorm Warning | ABR | Hughes, Stanley, Sully | 42 min |
| May 21, 6:44 PM CDT | Severe Thunderstorm Warning | UNR | Oglala Lakota | 27 min |
| May 21, 9:42 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson, Pennington | 31 min |
| May 23, 4:53 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 37 min |
| May 23, 5:26 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Lawrence, Meade, Pennington | 49 min |
| May 23, 5:26 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Meade, Pennington | 33 min |
| May 23, 6:04 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Meade, Pennington | 30 min |
| May 23, 6:53 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Meade, Pennington, Ziebach | 67 min |
| May 23, 7:45 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Meade, Ziebach | 58 min |
| May 23, 7:59 PM CDT | Severe Thunderstorm Warning | ABR | Dewey | 46 min |
| May 23, 9:58 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 47 min |
| May 23, 10:04 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hughes, Lyman | 41 min |
| May 23, 10:14 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Faulk, Hand, Hughes, Hyde, Lyman and 2 more | 46 min |
| May 23, 10:17 PM CDT | Severe Thunderstorm Warning | FSD | Brule, Charles Mix, Gregory | 43 min |
| May 23, 10:46 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Faulk, Hand, Hyde, Potter, Sully | 44 min |
| May 23, 11:30 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Edmunds, Faulk, McPherson, Walworth | 45 min |
| May 24, 12:11 AM CDT | Severe Thunderstorm Warning | ABR | Brown, Day, McPherson, Marshall, Spink | 49 min |
| May 24, 7:32 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Miner, Sanborn | 43 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Meade County7
- Pennington County7
- Haakon County6
- Ziebach County4
- Hughes County3
- Sully County3
- Buffalo County3
- Faulk County3
- Custer County2
- Butte County2
- Lyman County2
- Hand County2
- Hyde County2
- Potter County2
- McPherson County2
- Stanley County1
- Oglala Lakota County1
- Jackson County1
- Lawrence County1
- Dewey County1
- Tripp County1
- Brule County1
- Charles Mix County1
- Gregory County1
- Campbell County1
- Edmunds County1
- Walworth County1
- Brown County1
- Day County1
- Marshall County1
- Spink County1
- Davison County1
- Hanson County1
- Miner County1
- Sanborn 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.