Alert archive / South Dakota / Red Flag Warnings / 2021
Red Flag Warnings in South Dakota, August 2021
7 red flag warnings in August 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 August 2021. Tap one for its archive.
- Red Flag Warnings
- 7
- Busiest day
- August 10, 20212 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 |
|---|---|---|---|---|
| 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 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Custer County5
- Fall River County5
- Butte County3
- Jackson County3
- Lawrence County3
- Meade County3
- Pennington County3
- Oglala Lakota County3
- Campbell County2
- Corson County2
- Dewey County2
- Hughes County2
- Jones County2
- Lyman County2
- Potter County2
- Stanley County2
- Sully County2
- Walworth County2
- Haakon County2
- Perkins County2
- Ziebach County2
- Bennett County1
- Mellette County1
- Todd County1
- Tripp 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.