Alert archive / South Dakota / 2021
Weather alerts in South Dakota, September 2021
65 weather alerts in September 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in September 2021. Tap one for its archive.
- Alerts
- 65
- Warnings
- 21
- Watches
- 10
- Advisories
- 5
- Busiest day
- September 17, 202115 alerts
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 |
|---|---|---|---|---|
| Sep 1, 5:39 PM CDT | Mesoscale Discussion | SPC | Bennett, Dewey, Haakon, Hughes, Jackson, Jones and 6 more | 2 hr |
| Sep 1, 6:26 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Haakon, Jackson, Jones, Lyman, Mellette and 3 more | 7 hr |
| Sep 1, 9:14 PM CDT | Special Weather Statement | LBF | Bennett | 31 min |
| Sep 1, 9:20 PM CDT | Mesoscale Discussion | SPC | Bennett, Haakon, Jackson, Jones, Lyman, Mellette and 3 more | 85 min |
| Sep 1, 9:36 PM CDT | Special Weather Statement | UNR | Bennett | 39 min |
| Sep 1, 10:04 PM CDT | Special Weather Statement | UNR | Oglala Lakota | 26 min |
| Sep 1, 10:24 PM CDT | Special Weather Statement | UNR | Bennett | 51 min |
| Sep 1, 10:26 PM CDT | Special Weather Statement | UNR | Jackson | 34 min |
| Sep 1, 10:54 PM CDT | Special Weather Statement | UNR | Bennett | 36 min |
| Sep 1, 11:16 PM CDT | Special Weather Statement | UNR | Mellette | 44 min |
| Sep 1, 11:24 PM CDT | Special Weather Statement | UNR | Bennett | 51 min |
| Sep 1, 11:36 PM CDT | Mesoscale Discussion | SPC | Bennett, Haakon, Hughes, Jackson, Jones, Lyman and 5 more | 84 min |
| Sep 2, 12:22 AM CDT | Special Weather Statement | UNR | Mellette, Todd | 38 min |
| Sep 2, 12:48 AM CDT | Areal Flood Advisory | UNR | Mellette, Todd, Tripp | 6 hr |
| Sep 2, 4:00 AM CDT | Flash Flood Warning | UNR | Mellette, Todd, Tripp | 3 hr |
| Sep 3, 3:59 PM CDT | Mesoscale Discussion | SPC | Custer, Fall River, Lawrence, Oglala Lakota, Pennington | 91 min |
| Sep 3, 8:08 PM CDT | Special Weather Statement | UNR | Fall River | 52 min |
| Sep 3, 8:45 PM CDT | Special Weather Statement | UNR | Custer | 45 min |
| Sep 4, 2:39 PM CDT | Fire Weather Watch | UNR | Butte, Custer, Fall River, Haakon, Jackson, Lawrence and 5 more | 24 hr |
| Sep 5, 3:36 AM CDT | Fire Weather Watch | ABR | Corson, Dewey | 11 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 7, 3:06 PM CDT | Fire Weather Watch | UNR | Butte, Custer, Fall River, Jackson, Lawrence, Meade and 2 more | 48 hr |
| Sep 9, 3:26 AM CDT | Red Flag Warning | UNR | Butte, Custer, Fall River, Jackson, Lawrence, Meade and 2 more | 41 hr |
| Sep 13, 5:03 AM CDT | Special Weather Statement | UNR | Lawrence | 42 min |
| Sep 13, 5:38 AM CDT | Special Weather Statement | UNR | Lawrence | 52 min |
| Sep 13, 6:24 AM CDT | Special Weather Statement | UNR | Haakon | 51 min |
| Sep 13, 6:58 AM CDT | Special Weather Statement | UNR | Pennington | 47 min |
| Sep 13, 7:52 AM CDT | Special Weather Statement | UNR | Lyman | 53 min |
| Sep 13, 8:29 AM CDT | Special Weather Statement | ABR | Jones | 16 min |
| Sep 13, 9:00 AM CDT | Special Weather Statement | ABR | Lyman | 30 min |
| Sep 13, 9:10 AM CDT | Severe Thunderstorm Warning | ABR | Jones, Lyman | 23 min |
| Sep 14, 2:26 AM CDT | Dense Fog Advisory | ABR | Brown, Buffalo, Campbell, Edmunds, Faulk, Hand and 7 more | 7 hr |
| Sep 14, 2:27 PM CDT | Fire Weather Watch | UNR | Butte, Perkins | 14 hr |
| Sep 15, 4:09 AM CDT | Red Flag Warning | UNR | Butte, Perkins | 16 hr |
| Sep 16, 6:23 PM CDT | Mesoscale Discussion | SPC | Brookings, Clay, Lincoln, Minnehaha, Moody, Turner | 97 min |
| Sep 16, 7:15 PM CDT | Mesoscale Discussion | SPC | Bon Homme, Charles Mix, Douglas, Gregory, Hutchinson | 2 hr |
| Sep 16, 8:16 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Brule, Charles Mix, Davison, Douglas, Gregory and 2 more | 6 hr |
| Sep 16, 8:25 PM CDT | Special Weather Statement | UNR | Todd | 50 min |
| Sep 16, 9:00 PM CDT | Special Weather Statement | UNR | Todd | 30 min |
| Sep 16, 9:14 PM CDT | Special Weather Statement | UNR | Tripp | 31 min |
| Sep 16, 9:35 PM CDT | Special Weather Statement | UNR | Tripp | 25 min |
| Sep 16, 10:20 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 25 min |
| Sep 16, 11:31 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix, Hutchinson, Yankton | 29 min |
| Sep 17, 12:10 AM CDT | Severe Thunderstorm Warning | FSD | Brookings, Lake, McCook, Minnehaha, Moody | 35 min |
| Sep 17, 12:29 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Lincoln, Turner, Union, Yankton | 46 min |
| Sep 17, 12:34 AM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 56 min |
| Sep 17, 12:36 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha | 54 min |
| Sep 17, 1:11 AM CDT | Severe Thunderstorm Warning | FSD | Union | 49 min |
| Sep 17, 3:44 AM CDT | Fire Weather Watch | UNR | Bennett, Butte, Custer, Fall River, Haakon, Jackson and 6 more | 11 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 19, 3:36 AM CDT | Wind Advisory | UNR | Bennett, Butte, Custer, Fall River, Haakon, Harding and 9 more | 23 hr |
| Sep 19, 11:15 AM CDT | High Wind Warning | UNR | Custer, Meade, Pennington | 14 hr |
| Sep 19, 9:41 PM CDT | Special Weather Statement | UNR | Ziebach | 49 min |
| Sep 19, 10:09 PM CDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 51 min |
| Sep 23, 2:58 PM CDT | Fire Weather Watch | UNR | Haakon, Jackson, Meade, Pennington, Perkins, Ziebach | 12 hr |
| Sep 23, 3:00 PM CDT | Fire Weather Watch | ABR | Corson, Dewey, Jones, Stanley | 13 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 24, 2:16 PM CDT | Frost Advisory | ABR | Brown, Campbell, Clark, Codington, Day, Edmunds and 5 more | 19 hr |
| Sep 27, 2:45 AM CDT | Fire Weather Watch | UNR | Butte, Lawrence, Meade, Pennington, Perkins | 11 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 |
| Sep 28, 8:03 PM CDT | Wind Advisory | UNR | Custer, Meade, Pennington | 19 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 9 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 6 |
| Special Weather Statement | 23 |
| Flooding | |
| Flash Flood Warning | 1 |
| Areal Flood Advisory | 1 |
| Cold | |
| Frost Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 10 |
| Fire Weather Watch | 8 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Jackson County14
- Oglala Lakota County14
- Pennington County14
- Bennett County12
- Custer County12
- Lawrence County12
- Meade County12
- Haakon County11
- Todd County11
- Butte County11
- Perkins County11
- Fall River County10
- Mellette County9
- Jones County8
- Tripp County8
- Ziebach County8
- Dewey County7
- Corson County7
- Lyman County6
- Stanley County4
- Minnehaha County4
- Charles Mix County4
- Hughes County3
- Campbell County3
- Lincoln County3
- Gregory County3
- Potter County2
- Sully County2
- Brown County2
- Edmunds County2
- Faulk County2
- McPherson County2
- Spink County2
- Walworth County2
- Brookings County2
- Clay County2
- Moody County2
- Turner County2
- Bon Homme County2
- Douglas County2
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.