Alert archive / South Dakota / Red Flag Warnings
Red Flag Warnings in South Dakota, 2021
59 red flag warnings 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 red flag warnings reaches back to 2005.
Red Flag Warnings by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Red Flag Warnings
- 59
- Busiest month
- April15 red flag warnings
- Busiest day
- March 28, 20214 red flag warnings
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 |
|---|---|---|---|---|
| Jan 13, 1:40 PM CST | Red Flag Warning | ABR | Corson, Dewey, Jones, Lyman, Stanley | 27 hr |
| Mar 5, 1:59 PM CST | Red Flag Warning | UNR | Bennett, Butte, Custer, Fall River, Haakon, Jackson and 7 more | 30 hr |
| Mar 5, 2:45 PM CST | Red Flag Warning | ABR | Hughes, Jones, Lyman, Stanley | 29 hr |
| Mar 5, 3:08 PM CST | Red Flag Warning | FSD | Gregory | 29 hr |
| Mar 27, 2:56 PM CDT | Red Flag Warning | UNR | Bennett, Butte, Custer, Fall River, Haakon, Jackson and 9 more | 3 days |
| Mar 28, 3:53 AM CDT | Red Flag Warning | ABR | Campbell, Corson, Dewey, Hughes, Jones, Lyman and 4 more | 16 hr |
| Mar 28, 2:36 PM CDT | Red Flag Warning | ABR | Brown, Buffalo, Campbell, Clark, Codington, Corson and 20 more | 31 hr |
| Mar 28, 2:47 PM CDT | Red Flag Warning | FSD | Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more | 30 hr |
| Mar 28, 2:59 PM CDT | Red Flag Warning | UNR | Haakon, Jackson, Meade, Pennington, Ziebach | 54 hr |
| Mar 29, 3:18 PM CDT | Red Flag Warning | FSD | Aurora, Beadle, Bon Homme, Brule, Charles Mix, Clay and 13 more | 30 hr |
| Mar 30, 2:14 AM CDT | Red Flag Warning | ABR | Dewey, Hughes, Jones, Lyman, Stanley, Sully | 18 hr |
| Mar 31, 2:37 PM CDT | Red Flag Warning | UNR | Bennett, Butte, Custer, Fall River, Haakon, Jackson and 9 more | 53 hr |
| Mar 31, 2:41 PM CDT | Red Flag Warning | FSD | Aurora, Beadle, Brule, Charles Mix, Davison, Douglas and 3 more | 31 hr |
| Mar 31, 2:48 PM CDT | Red Flag Warning | ABR | Brown, Buffalo, Campbell, Clark, Codington, Corson and 20 more | 31 hr |
| Apr 1, 3:16 PM CDT | Red Flag Warning | UNR | Bennett, Butte, Fall River, Haakon, Jackson, Meade and 4 more | 29 hr |
| Apr 2, 2:54 AM CDT | Red Flag Warning | ABR | Campbell, Codington, Corson, Deuel, Dewey, Grant and 4 more | 17 hr |
| Apr 2, 10:49 AM CDT | Red Flag Warning | FSD | Bon Homme, Brookings, Clay, Hutchinson, Lake, Lincoln and 6 more | 9 hr |
| Apr 3, 3:15 AM CDT | Red Flag Warning | ABR | Brown, Buffalo, Campbell, Corson, Dewey, Edmunds and 13 more | 17 hr |
| Apr 3, 3:34 AM CDT | Red Flag Warning | UNR | Bennett, Fall River, Haakon, Jackson, Meade, Mellette and 6 more | 16 hr |
| Apr 3, 4:09 AM CDT | Red Flag Warning | FSD | Aurora, Beadle, Brule, Gregory, Jerauld | 17 hr |
| Apr 4, 3:54 AM CDT | Red Flag Warning | ABR | Campbell, Corson, Dewey, Edmunds, McPherson, Walworth | 15 hr |
| Apr 5, 3:32 AM CDT | Red Flag Warning | ABR | Brown, Buffalo, Campbell, Corson, Dewey, Edmunds and 12 more | 16 hr |
| Apr 5, 4:13 AM CDT | Red Flag Warning | UNR | Bennett, Custer, Fall River, Haakon, Jackson, Meade and 7 more | 16 hr |
| Apr 9, 3:48 AM CDT | Red Flag Warning | ABR | Corson, Dewey | 17 hr |
| Apr 9, 4:21 AM CDT | Red Flag Warning | UNR | Perkins, Ziebach | 16 hr |
| Apr 22, 11:30 AM CDT | Red Flag Warning | ABR | Brown, Codington, Day, Grant, Marshall, Roberts | 7 hr |
| Apr 26, 4:30 AM CDT | Red Flag Warning | UNR | Custer, Fall River | 10 hr |
| Apr 29, 3:23 PM CDT | Red Flag Warning | UNR | Butte, Meade, Pennington, Perkins, Ziebach | 30 hr |
| Apr 29, 3:31 PM CDT | Red Flag Warning | ABR | Campbell, Corson, Dewey, Walworth | 29 hr |
| May 1, 2:50 AM CDT | Red Flag Warning | ABR | Brown, Campbell, Corson, Day, Dewey, Edmunds and 6 more | 17 hr |
| May 1, 3:09 AM CDT | Red Flag Warning | FSD | Union | 16 hr |
| May 6, 3:27 AM CDT | Red Flag Warning | ABR | Brown, Campbell, Clark, Codington, Day, Deuel and 9 more | 17 hr |
| Jul 2, 6:06 AM CDT | Red Flag Warning | ABR | Campbell, Corson, Dewey, Hughes, Jones, Lyman and 4 more | 15 hr |
| Jul 3, 2:57 AM CDT | Red Flag Warning | ABR | Campbell, Corson, Dewey, Hughes, Jones, Lyman and 4 more | 15 hr |
| Aug 10, 3:28 AM CDT | Red Flag Warning | ABR | Campbell, Corson, Dewey, Hughes, Jones, Lyman and 4 more | 17 hr |
| Aug 10, 4:10 AM CDT | Red Flag Warning | UNR | Butte, Custer, Fall River, Haakon, Jackson, Lawrence and 4 more | 18 hr |
| Aug 16, 2:41 PM CDT | Red Flag Warning | UNR | Bennett, Butte, Custer, Fall River, Haakon, Jackson and 9 more | 30 hr |
| Aug 17, 2:39 AM CDT | Red Flag Warning | ABR | Campbell, Corson, Dewey, Hughes, Jones, Lyman and 4 more | 17 hr |
| Aug 22, 4:26 AM CDT | Red Flag Warning | UNR | Custer, Fall River, Oglala Lakota | 16 hr |
| Aug 22, 3:12 PM CDT | Red Flag Warning | UNR | Butte, Custer, Fall River, Jackson, Lawrence, Meade and 2 more | 30 hr |
| Aug 27, 3:05 AM CDT | Red Flag Warning | UNR | Custer, Fall River | 16 hr |
| Sep 5, 2:44 PM CDT | Red Flag Warning | UNR | Butte, Custer, Fall River, Haakon, Jackson, Lawrence and 5 more | 29 hr |
| Sep 5, 2:51 PM CDT | Red Flag Warning | ABR | Corson, Dewey | 28 hr |
| Sep 9, 3:26 AM CDT | Red Flag Warning | UNR | Butte, Custer, Fall River, Jackson, Lawrence, Meade and 2 more | 41 hr |
| Sep 15, 4:09 AM CDT | Red Flag Warning | UNR | Butte, Perkins | 16 hr |
| Sep 17, 2:17 PM CDT | Red Flag Warning | UNR | Bennett, Butte, Custer, Fall River, Haakon, Jackson and 6 more | 32 hr |
| Sep 18, 9:26 AM CDT | Red Flag Warning | ABR | Corson, Dewey, Jones, Stanley | 11 hr |
| Sep 24, 2:33 AM CDT | Red Flag Warning | UNR | Perkins, Ziebach | 16 hr |
| Sep 24, 3:59 AM CDT | Red Flag Warning | ABR | Campbell, Corson, Dewey, Walworth | 15 hr |
| Sep 27, 2:00 PM CDT | Red Flag Warning | ABR | Corson | 30 hr |
| Sep 27, 2:01 PM CDT | Red Flag Warning | UNR | Butte, Custer, Fall River, Jackson, Lawrence, Meade and 3 more | 30 hr |
| Oct 4, 2:58 AM CDT | Red Flag Warning | UNR | Butte, Lawrence, Meade | 17 hr |
| Oct 6, 3:36 AM CDT | Red Flag Warning | UNR | Butte, Custer, Fall River, Haakon, Jackson, Lawrence and 5 more | 16 hr |
| Oct 6, 3:40 AM CDT | Red Flag Warning | ABR | Corson, Dewey, Jones, Stanley | 16 hr |
| Nov 15, 3:28 PM CST | Red Flag Warning | UNR | Bennett, Butte, Custer, Fall River, Haakon, Jackson and 8 more | 27 hr |
| Nov 16, 3:09 AM CST | Red Flag Warning | ABR | Corson, Dewey, Jones, Stanley | 16 hr |
| Nov 22, 2:25 PM CST | Red Flag Warning | UNR | Bennett, Custer, Fall River, Jackson, Meade, Mellette and 4 more | 28 hr |
| Nov 23, 2:15 AM CST | Red Flag Warning | ABR | Jones, Lyman | 16 hr |
| Nov 23, 3:46 AM CST | Red Flag Warning | FSD | Aurora, Bon Homme, Brule, Charles Mix, Davison, Douglas and 4 more | 14 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Corson County21
- Dewey County21
- Fall River County19
- Meade County19
- Pennington County18
- Custer County17
- Jackson County17
- Jones County16
- Butte County16
- Oglala Lakota County16
- Perkins County16
- Stanley County15
- Ziebach County15
- Campbell County15
- Walworth County15
- Lyman County13
- Haakon County13
- Lawrence County13
- Hughes County11
- Bennett County10
- Potter County10
- Sully County10
- Mellette County8
- Todd County8
- McPherson County8
- Tripp County7
- Brown County7
- Edmunds County7
- Gregory County6
- Grant County6
- Marshall County6
- Roberts County6
- Codington County5
- Day County5
- Faulk County5
- Spink County5
- Aurora County5
- Brule County5
- Buffalo County4
- Deuel County4
25 more counties
- Hamlin County4
- Hand County4
- Hyde County4
- Beadle County4
- Bon Homme County4
- Charles Mix County4
- Davison County4
- Douglas County4
- Hutchinson County4
- Jerauld County4
- Union County4
- Yankton County4
- Clark County3
- Clay County3
- Hanson County3
- Lincoln County3
- McCook County3
- Sanborn County3
- Turner County3
- Brookings County2
- Lake County2
- Miner County2
- Minnehaha County2
- Moody County2
- Kingsbury County1
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. Rebuilt daily.