Alert archive / South Dakota / 2020
Weather alerts in South Dakota, September 2020
41 weather alerts in September 2020, 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 2020. Tap one for its archive.
- Alerts
- 41
- Warnings
- 17
- Watches
- 5
- Advisories
- 14
- Busiest day
- September 1, 20205 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, 3:06 AM CDT | Fire Weather Watch | ABR | 17 hr | |
| Sep 1, 3:06 AM CDT | Red Flag Warning | ABR | 17 hr | |
| Sep 1, 3:59 AM CDT | Red Flag Warning | UNR | Perkins, Ziebach | 16 hr |
| Sep 1, 3:59 AM CDT | Red Flag Warning | UNR | Bennett, Butte, Custer, Fall River, Haakon, Jackson and 6 more | 42 hr |
| Sep 1, 2:51 PM CDT | Wind Advisory | UNR | Butte, Haakon, Harding, Lawrence, Meade, Pennington and 2 more | 33 hr |
| Sep 1, 8:07 PM CDT | Red Flag Warning | ABR | 24 hr | |
| Sep 2, 3:24 AM CDT | Wind Advisory | ABR | Brown, Buffalo, Campbell, Clark, Codington, Corson and 20 more | 24 hr |
| Sep 3, 5:00 AM CDT | Fire Weather Watch | UNR | Custer, Fall River, Lawrence, Meade, Pennington | 33 hr |
| Sep 4, 1:14 PM CDT | Red Flag Warning | ABR | 5 hr | |
| Sep 4, 1:56 PM CDT | Red Flag Warning | UNR | Bennett, Butte, Custer, Fall River, Jackson, Lawrence and 3 more | 54 hr |
| Sep 6, 3:21 AM CDT | Winter Storm Watch | UNR | Custer, Lawrence, Meade, Pennington | 24 hr |
| Sep 7, 3:37 AM CDT | Winter Storm Warning | UNR | Custer, Lawrence, Meade, Pennington | 28 hr |
| Sep 8, 3:34 AM CDT | Mesoscale Discussion | SPC | Custer, Fall River | 4 hr |
| Sep 8, 2:51 PM CDT | Freeze Warning | UNR | Butte, Custer, Fall River, Haakon, Harding, Jackson and 6 more | 18 hr |
| Sep 8, 3:29 PM CDT | Frost Advisory | ABR | Brown, Day, Faulk, Hughes, Hyde, Jones and 4 more | 18 hr |
| Sep 8, 3:29 PM CDT | Freeze Warning | ABR | Campbell, Corson, Dewey, Edmunds, McPherson, Potter and 1 more | 18 hr |
| Sep 9, 3:36 AM CDT | Frost Advisory | FSD | Aurora, Beadle, Brookings, Brule, Davison, Hanson and 8 more | 29 hr |
| Sep 9, 12:52 PM CDT | Frost Advisory | ABR | Brown, Buffalo, Clark, Codington, Day, Deuel and 10 more | 20 hr |
| Sep 12, 2:44 PM CDT | Fire Weather Watch | UNR | Bennett, Butte, Custer, Fall River, Jackson, Lawrence and 4 more | 24 hr |
| Sep 13, 4:33 AM CDT | Dense Fog Advisory | FSD | Clay, Union, Yankton | 4 hr |
| Sep 13, 3:03 PM CDT | Red Flag Warning | UNR | Bennett, Butte, Custer, Fall River, Haakon, Jackson and 6 more | 30 hr |
| Sep 13, 3:21 PM CDT | Red Flag Warning | ABR | 28 hr | |
| Sep 14, 2:31 AM CDT | Dense Fog Advisory | UNR | Bennett, Jackson, Mellette, Todd, Tripp | 6 hr |
| Sep 22, 3:03 PM CDT | Fire Weather Watch | UNR | Butte, Custer, Fall River, Jackson, Lawrence, Meade and 2 more | 36 hr |
| Sep 23, 6:02 PM CDT | Special Weather Statement | UNR | Perkins | 43 min |
| Sep 23, 6:09 PM CDT | Special Weather Statement | UNR | Perkins | 51 min |
| Sep 23, 6:28 PM CDT | Special Weather Statement | UNR | Perkins | 32 min |
| Sep 23, 6:43 PM CDT | Special Weather Statement | UNR | Perkins | 47 min |
| Sep 23, 6:48 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Perkins, Ziebach | 42 min |
| Sep 24, 7:45 PM CDT | Wind Advisory | UNR | Butte, Haakon, Harding, Jackson, Lawrence, Meade and 3 more | 7 hr |
| Sep 25, 2:26 PM CDT | Red Flag Warning | ABR | 27 hr | |
| Sep 25, 2:58 PM CDT | Red Flag Warning | UNR | Bennett, Butte, Haakon, Jackson, Lawrence, Meade and 6 more | 27 hr |
| Sep 25, 3:00 PM CDT | Wind Advisory | UNR | Butte, Haakon, Harding, Jackson, Lawrence, Meade and 3 more | 30 hr |
| Sep 26, 1:44 PM CDT | Wind Advisory | ABR | Corson, Dewey, Jones, Stanley | 3 hr |
| Sep 26, 8:32 PM CDT | Wind Advisory | UNR | Bennett, Butte, Custer, Fall River, Haakon, Harding and 9 more | 23 hr |
| Sep 29, 10:47 AM CDT | Red Flag Warning | FSD | 8 hr | |
| Sep 29, 2:30 PM CDT | Wind Advisory | ABR | Brown, Buffalo, Campbell, Clark, Codington, Corson and 20 more | 30 hr |
| Sep 29, 2:34 PM CDT | Wind Advisory | UNR | Bennett, Butte, Custer, Haakon, Harding, Jackson and 9 more | 29 hr |
| Sep 29, 2:36 PM CDT | Wind Advisory | FSD | Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more | 29 hr |
| Sep 30, 3:33 AM CDT | Red Flag Warning | FSD | 15 hr | |
| Sep 30, 4:15 AM CDT | Red Flag Warning | ABR | 16 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 | 1 |
| Mesoscale Discussion | 1 |
| Special Weather Statement | 4 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Cold | |
| Freeze Warning | 2 |
| Frost Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 9 |
| Fire | |
| Red Flag Warning | 13 |
| Fire Weather Watch | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Meade County16
- Perkins County15
- Lawrence County15
- Pennington County15
- Butte County12
- Custer County12
- Jackson County12
- Ziebach County10
- Fall River County9
- Haakon County9
- Oglala Lakota County9
- Bennett County8
- Harding County6
- Mellette County5
- Todd County5
- Brown County4
- Corson County4
- Day County4
- Dewey County4
- Edmunds County4
- Faulk County4
- Hyde County4
- Jones County4
- McPherson County4
- Marshall County4
- Roberts County4
- Stanley County4
- Buffalo County3
- Campbell County3
- Clark County3
- Codington County3
- Deuel County3
- Grant County3
- Hamlin County3
- Hand County3
- Hughes County3
- Potter County3
- Spink County3
- Sully County3
- Walworth County3
26 more counties
- Lyman County2
- Aurora County2
- Beadle County2
- Brookings County2
- Brule County2
- Davison County2
- Hanson County2
- Jerauld County2
- Kingsbury County2
- Lake County2
- McCook County2
- Miner County2
- Minnehaha County2
- Moody County2
- Sanborn County2
- Clay County2
- Union County2
- Yankton County2
- Tripp County2
- Bon Homme County1
- Charles Mix County1
- Douglas County1
- Gregory County1
- Hutchinson County1
- Lincoln County1
- Turner County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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.