Alert archive / South Dakota / Severe Thunderstorm Watches
Severe Thunderstorm Watches in South Dakota, 2021
34 severe thunderstorm watches in 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 watches reaches back to 1997.
Severe Thunderstorm Watches by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Severe Thunderstorm Watches
- 34
- Busiest month
- August15 severe thunderstorm watches
- Busiest day
- August 28, 20213 severe thunderstorm watches
Over time
By month
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 21, 5:17 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Oglala Lakota, Todd | 6 hr |
| May 23, 8:12 PM CDT | Severe Thunderstorm Watch | SPC | Mellette, Todd, Tripp | 5 hr |
| May 26, 2:27 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Fall River, Oglala Lakota | 8 hr |
| Jun 7, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | Campbell, Edmunds, McPherson, Walworth | 8 hr |
| Jun 8, 8:00 PM CDT | Severe Thunderstorm Watch | SPC | Butte, Custer, Fall River, Harding, Lawrence, Meade and 2 more | 5 hr |
| Jun 10, 9:08 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Butte, Campbell, Corson, Custer, Dewey and 20 more | 6 hr |
| Jun 11, 2:15 AM CDT | Severe Thunderstorm Watch | SPC | Aurora, Beadle, Bon Homme, Brookings, Brown, Brule and 34 more | 5 hr |
| Jul 3, 4:33 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Haakon, Jackson, Jones, Lyman, Mellette and 2 more | 6 hr |
| Jul 6, 2:01 PM CDT | Severe Thunderstorm Watch | SPC | Union | 8 hr |
| Jul 8, 4:49 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Butte, Custer, Haakon, Harding, Jackson and 6 more | 6 hr |
| Jul 8, 9:33 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Beadle, Bon Homme, Brule, Buffalo, Charles Mix and 24 more | 5 hr |
| Jul 9, 6:33 PM CDT | Severe Thunderstorm Watch | SPC | Custer, Fall River, Lawrence, Oglala Lakota, Pennington | 4 hr |
| Jul 13, 5:25 PM CDT | Severe Thunderstorm Watch | SPC | Butte, Custer, Fall River, Lawrence, Meade, Oglala Lakota and 1 more | 8 hr |
| Jul 16, 4:55 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Custer, Fall River, Haakon, Jackson, Lawrence and 5 more | 7 hr |
| Jul 23, 7:02 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Campbell, Clark, Codington, Corson, Day and 15 more | 7 hr |
| Jul 26, 5:22 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Day, McPherson, Marshall, Roberts | 5 hr |
| Aug 6, 2:43 PM CDT | Severe Thunderstorm Watch | SPC | Butte, Custer, Fall River, Harding, Lawrence, Meade and 3 more | 6 hr |
| Aug 6, 7:21 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Buffalo, Hand, Hyde, Jackson, Jones and 4 more | 6 hr |
| Aug 6, 10:08 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Beadle, Bon Homme, Brule, Charles Mix, Davison and 9 more | 4 hr |
| Aug 14, 4:28 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Custer, Fall River, Haakon, Jackson, Meade and 5 more | 7 hr |
| Aug 20, 3:58 PM CDT | Severe Thunderstorm Watch | SPC | Union | 6 hr |
| Aug 22, 3:36 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Beadle, Brookings, Brown, Brule, Buffalo and 24 more | 5 hr |
| Aug 23, 5:20 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Bon Homme, Brule, Buffalo, Charles Mix, Davison and 14 more | 8 hr |
| Aug 23, 10:11 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Campbell, Clark, Codington, Corson, Day and 15 more | 5 hr |
| Aug 26, 9:05 AM CDT | Severe Thunderstorm Watch | SPC | Beadle, Brookings, Clark, Codington, Deuel, Grant and 7 more | 4 hr |
| Aug 26, 8:03 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Beadle, Bennett, Bon Homme, Brookings, Brule and 36 more | 7 hr |
| Aug 28, 2:32 AM CDT | Severe Thunderstorm Watch | SPC | Brown, Campbell, Clark, Codington, Corson, Day and 10 more | 5 hr |
| Aug 28, 7:08 AM CDT | Severe Thunderstorm Watch | SPC | Brown, Clark, Codington, Day, Deuel, Edmunds and 7 more | 5 hr |
| Aug 28, 3:57 PM CDT | Severe Thunderstorm Watch | SPC | Bon Homme, Clay, Hutchinson, Lincoln, McCook, Minnehaha and 3 more | 7 hr |
| Aug 30, 4:03 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Campbell, Corson, Custer, Dewey, Haakon and 13 more | 6 hr |
| Aug 30, 9:57 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Bennett, Bon Homme, Brule, Buffalo, Charles Mix and 24 more | 7 hr |
| Sep 1, 6:26 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Haakon, Jackson, Jones, Lyman, Mellette and 3 more | 7 hr |
| Sep 16, 8:16 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Brule, Charles Mix, Davison, Douglas, Gregory and 2 more | 6 hr |
| Oct 9, 2:56 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Beadle, Brookings, Brown, Brule, Buffalo and 18 more | 7 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bennett County12
- Oglala Lakota County12
- Todd County12
- Meade County11
- Pennington County11
- Mellette County10
- Custer County10
- Jackson County10
- Haakon County9
- Jones County9
- Lyman County9
- Aurora County9
- Brule County9
- Roberts County9
- Tripp County8
- Fall River County8
- McPherson County8
- Lawrence County8
- Brown County8
- Buffalo County8
- Clark County8
- Codington County8
- Davison County8
- Day County8
- Grant County8
- Jerauld County8
- Marshall County8
- Miner County8
- Sanborn County8
- Campbell County7
- Edmunds County7
- Walworth County7
- Stanley County7
- Beadle County7
- Bon Homme County7
- Charles Mix County7
- Deuel County7
- Douglas County7
- Faulk County7
- Hamlin County7
26 more counties
- Hand County7
- Hanson County7
- Hutchinson County7
- Hyde County7
- Spink County7
- Union County7
- Perkins County6
- Corson County6
- Dewey County6
- Hughes County6
- Potter County6
- Sully County6
- Ziebach County6
- Gregory County6
- Kingsbury County6
- Lake County6
- Butte County5
- Brookings County5
- Clay County5
- McCook County5
- Turner County5
- Yankton County5
- Harding County4
- Lincoln County4
- Minnehaha County4
- Moody County4
The busiest days
Days with the most alerts issued, by UTC date.
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.