Alert archive / South Dakota / Red Flag Warnings / 2021
Red Flag Warnings in South Dakota, April 2021
15 red flag warnings in April 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 April 2021. Tap one for its archive.
- Red Flag Warnings
- 15
- Busiest day
- April 3, 20213 red flag 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 |
|---|---|---|---|---|
| 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 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Corson County6
- Dewey County6
- Perkins County5
- Ziebach County5
- Campbell County5
- Walworth County5
- Fall River County4
- Meade County4
- Pennington County4
- McPherson County4
- Bennett County3
- Haakon County3
- Jackson County3
- Oglala Lakota County3
- Brown County3
- Edmunds County3
- Butte County2
- Codington County2
- Grant County2
- Roberts County2
- Buffalo County2
- Faulk County2
- Hand County2
- Hughes County2
- Hyde County2
- Jones County2
- Lyman County2
- Marshall County2
- Potter County2
- Spink County2
- Stanley County2
- Sully County2
- Mellette County2
- Todd County2
- Tripp County2
- Custer County2
- Deuel County1
- Hamlin County1
- Bon Homme County1
- Brookings 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.