Alert archive / South Dakota / 2026
Weather alerts in South Dakota, September 2026
168 weather alerts in September 2026, 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 2026. Tap one for its archive.
- Alerts
- 168
- Warnings
- 79
- Watches
- 6
- Advisories
- 19
- Busiest day
- September 5, 202623 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, 3:17 PM CDT | Mesoscale Discussion | SPC | Aurora, Bon Homme, Brule, Charles Mix, Clay, Davison and 13 more | 118 min |
| Sep 1, 3:50 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Bon Homme, Charles Mix, Clay, Davison, Douglas and 13 more | 9 hr |
| Sep 1, 4:06 PM CDT | Severe Thunderstorm Warning | FSD | Brule, Charles Mix, Gregory | 23 min |
| Sep 1, 4:15 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 45 min |
| Sep 1, 4:56 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 49 min |
| Sep 1, 5:07 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 38 min |
| Sep 1, 5:16 PM CDT | Severe Thunderstorm Warning | FSD | Gregory | 44 min |
| Sep 1, 5:42 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix, Douglas, Hutchinson | 32 min |
| Sep 1, 5:50 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 40 min |
| Sep 1, 6:24 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix, Douglas, Hutchinson | 51 min |
| Sep 1, 6:26 PM CDT | Mesoscale Discussion | SPC | Bon Homme, Charles Mix, Clay, Douglas, Gregory, Hutchinson and 6 more | 2 hr |
| Sep 1, 6:36 PM CDT | Severe Thunderstorm Warning | FSD | Brule, Charles Mix | 24 min |
| Sep 1, 7:15 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix | 45 min |
| Sep 1, 7:53 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Yankton | 52 min |
| Sep 1, 8:24 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Clay, Yankton | 66 min |
| Sep 1, 8:41 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Union, Yankton | 49 min |
| Sep 1, 8:48 PM CDT | Tornado Warning | FSD | Clay, Yankton | 27 min |
| Sep 1, 9:11 PM CDT | Mesoscale Discussion | SPC | Clay, Lincoln, Turner, Union, Yankton | 2 hr |
| Sep 1, 9:24 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Lincoln, Union | 51 min |
| Sep 1, 9:50 PM CDT | Severe Thunderstorm Watch | SPC | Union | 7 hr |
| Sep 1, 9:59 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix | 46 min |
| Sep 1, 10:02 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Union | 43 min |
| Sep 1, 10:37 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Yankton | 38 min |
| Sep 2, 5:36 AM CDT | Special Weather Statement | ABR | Spink | 39 min |
| Sep 2, 1:22 PM CDT | Red Flag Warning | UNR | Custer, Fall River, Oglala Lakota | 32 hr |
| Sep 2, 2:09 PM CDT | Mesoscale Discussion | SPC | Fall River | 2 hr |
| Sep 2, 7:37 PM CDT | Special Weather Statement | UNR | Oglala Lakota | 23 min |
| Sep 2, 7:56 PM CDT | Special Weather Statement | UNR | Oglala Lakota | 34 min |
| Sep 2, 8:10 PM CDT | Special Weather Statement | UNR | Oglala Lakota | 20 min |
| Sep 2, 8:28 PM CDT | Special Weather Statement | UNR | Jackson | 32 min |
| Sep 2, 8:30 PM CDT | Special Weather Statement | UNR | Bennett | 30 min |
| Sep 2, 8:58 PM CDT | Special Weather Statement | UNR | Bennett | 32 min |
| Sep 2, 9:00 PM CDT | Special Weather Statement | UNR | Jackson | 30 min |
| Sep 2, 10:01 PM CDT | Special Weather Statement | UNR | Pennington | 29 min |
| Sep 3, 4:55 AM CDT | Special Weather Statement | LBF | Todd | 35 min |
| Sep 3, 5:07 AM CDT | Special Weather Statement | UNR | Todd, Tripp | 23 min |
| Sep 3, 7:03 AM CDT | Special Weather Statement | UNR | Tripp | 27 min |
| Sep 3, 7:34 AM CDT | Special Weather Statement | UNR | Tripp | 26 min |
| Sep 3, 10:19 PM CDT | Red Flag Warning | UNR | Butte | 23 hr |
| Sep 4, 7:42 AM CDT | Heat Advisory | FSD | Bon Homme, Charles Mix, Clay, Douglas, Hutchinson, Lincoln and 3 more | 10 hr |
| Sep 4, 8:17 AM CDT | Dense Fog Advisory | ABR | Brown, Edmunds, Faulk, Grant, Hand, Potter and 2 more | 3 hr |
| Sep 4, 3:31 PM CDT | Severe Thunderstorm Warning | ABR | Jones, Lyman, Stanley | 15 min |
| Sep 5, 12:25 AM CDT | Severe Thunderstorm Warning | FSD | Beadle, Jerauld | 35 min |
| Sep 5, 12:48 AM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Bon Homme, Brookings, Brown, Brule and 33 more | 117 min |
| Sep 5, 2:16 AM CDT | Severe Thunderstorm Warning | FSD | Jerauld | 29 min |
| Sep 5, 2:29 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Jerauld, Sanborn | 31 min |
| Sep 5, 3:01 AM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Hutchinson | 44 min |
| Sep 5, 3:42 AM CDT | Severe Thunderstorm Warning | FSD | Hanson, Hutchinson, McCook | 48 min |
| Sep 5, 4:38 AM CDT | Flash Flood Warning | FSD | Davison, Hanson, Hutchinson | 3 hr |
| Sep 5, 4:57 AM CDT | Severe Thunderstorm Warning | FSD | Hutchinson, Turner | 48 min |
| Sep 5, 5:45 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Turner | 45 min |
| Sep 5, 12:54 PM CDT | Special Weather Statement | UNR | Custer | 21 min |
| Sep 5, 3:16 PM CDT | Special Weather Statement | UNR | Oglala Lakota | 29 min |
| Sep 5, 3:34 PM CDT | Mesoscale Discussion | SPC | Bennett, Haakon, Jackson, Meade, Mellette, Oglala Lakota and 4 more | 116 min |
| Sep 5, 3:47 PM CDT | Special Weather Statement | LBF | Oglala Lakota | 43 min |
| Sep 5, 3:54 PM CDT | Severe Thunderstorm Warning | UNR | Oglala Lakota | 10 min |
| Sep 5, 4:09 PM CDT | Special Weather Statement | ABR | Dewey | 36 min |
| Sep 5, 4:17 PM CDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 43 min |
| Sep 5, 4:32 PM CDT | Severe Thunderstorm Warning | ABR | Dewey, Potter, Stanley, Sully | 16 min |
| Sep 5, 4:56 PM CDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 41 min |
| Sep 5, 5:44 PM CDT | Severe Thunderstorm Warning | ABR | Dewey, Potter, Walworth | 31 min |
| Sep 5, 6:09 PM CDT | Severe Thunderstorm Warning | ABR | Sully | 36 min |
| Sep 5, 6:16 PM CDT | Special Weather Statement | UNR | Pennington | 29 min |
| Sep 5, 6:25 PM CDT | Severe Thunderstorm Warning | ABR | Hyde, Sully | 35 min |
| Sep 5, 6:40 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 14 min |
| Sep 6, 8:26 AM CDT | Severe Thunderstorm Warning | ABR | Potter, Sully | 49 min |
| Sep 6, 9:14 AM CDT | Severe Thunderstorm Warning | ABR | Potter, Sully | 34 min |
| Sep 6, 9:34 AM CDT | Severe Thunderstorm Warning | ABR | Hughes, Sully | 29 min |
| Sep 6, 10:23 AM CDT | Flood Watch | FSD | Lincoln, Minnehaha, Union | 9 hr |
| Sep 6, 11:30 AM CDT | Severe Thunderstorm Warning | ABR | Corson | 29 min |
| Sep 6, 12:38 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, McPherson | 30 min |
| Sep 6, 2:07 PM CDT | Flash Flood Warning | FSD | Brookings, Minnehaha, Moody | 4 hr |
| Sep 6, 6:30 PM CDT | Special Weather Statement | UNR | Harding | 30 min |
| Sep 6, 7:18 PM CDT | Special Weather Statement | UNR | Fall River | 42 min |
| Sep 6, 7:32 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 58 min |
| Sep 6, 8:56 PM CDT | Special Weather Statement | UNR | Custer | 19 min |
| Sep 6, 10:40 PM CDT | Red Flag Warning | UNR | Custer, Fall River | 21 hr |
| Sep 7, 12:33 AM CDT | Special Weather Statement | UNR | Fall River | 27 min |
| Sep 7, 1:28 AM CDT | Special Weather Statement | UNR | Custer | 32 min |
| Sep 7, 2:05 AM CDT | Special Weather Statement | UNR | Pennington | 25 min |
| Sep 7, 2:16 AM CDT | Severe Thunderstorm Warning | UNR | Custer, Meade, Pennington | 24 min |
| Sep 7, 3:43 AM CDT | Special Weather Statement | UNR | Oglala Lakota | 32 min |
| Sep 7, 6:07 AM CDT | Special Weather Statement | ABR | Lyman | 23 min |
| Sep 7, 6:35 AM CDT | Special Weather Statement | UNR | Jackson | 25 min |
| Sep 7, 7:51 AM CDT | Special Weather Statement | LBF | Bennett | 24 min |
| Sep 7, 8:22 AM CDT | Special Weather Statement | UNR | Mellette | 23 min |
| Sep 7, 11:52 AM CDT | Special Weather Statement | ABR | Buffalo, Hughes, Hyde, Jones, Lyman | 23 min |
| Sep 7, 12:16 PM CDT | Special Weather Statement | ABR | Buffalo, Hand, Hughes, Hyde, Jones, Lyman | 29 min |
| Sep 7, 6:14 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 46 min |
| Sep 7, 6:29 PM CDT | Mesoscale Discussion | SPC | Aurora, Bon Homme, Charles Mix, Davison, Douglas, Gregory and 7 more | 91 min |
| Sep 7, 6:58 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix | 32 min |
| Sep 7, 7:07 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Bon Homme, Brookings, Charles Mix, Clay, Davison and 14 more | 7 hr |
| Sep 7, 7:37 PM CDT | Tornado Warning | FSD | Charles Mix, Gregory | 38 min |
| Sep 7, 8:07 PM CDT | Flash Flood Warning | FSD | Charles Mix | 3 hr |
| Sep 7, 8:14 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix | 46 min |
| Sep 7, 8:24 PM CDT | Tornado Warning | FSD | Bon Homme, Charles Mix | 36 min |
| Sep 7, 8:42 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Hutchinson | 48 min |
| Sep 7, 9:28 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Yankton | 21 min |
| Sep 7, 10:20 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix, Douglas, Hutchinson | 40 min |
| Sep 7, 10:48 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Yankton | 27 min |
| Sep 7, 11:12 PM CDT | Severe Thunderstorm Warning | FSD | Yankton | 48 min |
| Sep 7, 11:19 PM CDT | Severe Thunderstorm Warning | FSD | Douglas, Hutchinson | 41 min |
| Sep 7, 11:21 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas | 39 min |
| Sep 7, 11:28 PM CDT | Mesoscale Discussion | SPC | Bon Homme, Charles Mix, Clay, Hutchinson, Lincoln, Turner and 2 more | 2 hr |
| Sep 7, 11:42 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha | 48 min |
| Sep 7, 11:55 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Charles Mix, Davison, Douglas, Hanson, Hutchinson and 1 more | 50 min |
| Sep 8, 9:23 AM CDT | Red Flag Warning | ABR | Campbell, Corson, Dewey, Potter, Sully, Walworth | 10 hr |
| Sep 8, 11:39 PM CDT | Dense Fog Advisory | FSD | Union | 8 hr |
| Sep 10, 12:12 PM CDT | Red Flag Warning | UNR | Bennett, Custer, Fall River, Jackson, Oglala Lakota, Pennington | 31 hr |
| Sep 11, 1:36 AM CDT | Red Flag Warning | ABR | Buffalo, Hand, Hughes, Hyde, Jones, Lyman and 1 more | 17 hr |
| Sep 11, 3:51 PM CDT | Mesoscale Discussion | SPC | Brookings, Codington, Deuel, Grant, Hamlin, Kingsbury and 1 more | 54 min |
| Sep 11, 6:39 PM CDT | Severe Thunderstorm Watch | SPC | Brookings, Deuel, Lake, McCook, Minnehaha, Moody | 3 hr |
| Sep 11, 6:54 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Lake, Moody | 51 min |
| Sep 11, 7:19 PM CDT | Severe Thunderstorm Warning | ABR | Grant, Roberts | 27 min |
| Sep 11, 7:48 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, McCook, Minnehaha, Turner | 22 min |
| Sep 11, 8:36 PM CDT | Mesoscale Discussion | SPC | Clay, Lincoln, Union, Yankton | 114 min |
| Sep 11, 9:24 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Union | 51 min |
| Sep 13, 12:09 PM CDT | Wind Advisory | ABR | Campbell, Corson, Dewey, Edmunds, McPherson, Walworth | 43 hr |
| Sep 13, 1:31 PM CDT | Wind Advisory | UNR | Butte, Harding, Meade, Perkins, Ziebach | 32 hr |
| Sep 14, 4:09 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Jerauld | 18 min |
| Sep 14, 5:40 AM CDT | Special Weather Statement | ABR | Corson, Dewey, Walworth | 65 min |
| Sep 14, 5:45 AM CDT | Special Weather Statement | ABR | Dewey, Stanley | 60 min |
| Sep 14, 6:44 AM CDT | Special Weather Statement | ABR | Campbell, Edmunds, McPherson, Walworth | 61 min |
| Sep 14, 6:46 AM CDT | Special Weather Statement | ABR | Dewey, Hughes, Potter, Sully | 44 min |
| Sep 14, 7:38 AM CDT | Special Weather Statement | ABR | Potter | 37 min |
| Sep 14, 8:43 AM CDT | Special Weather Statement | ABR | Codington, Deuel, Grant, Hamlin | 32 min |
| Sep 14, 11:44 PM CDT | Dense Fog Advisory | FSD | Brookings, Kingsbury, Lake, Miner, Moody | 5 hr |
| Sep 17, 1:27 AM CDT | Dense Fog Advisory | FSD | Brule, Charles Mix, Gregory | 10 hr |
| Sep 17, 4:24 AM CDT | Dense Fog Advisory | ABR | Buffalo, Campbell, Codington, Corson, Deuel, Dewey and 15 more | 6 hr |
| Sep 17, 7:48 AM CDT | Dense Fog Advisory | UNR | Haakon, Harding, Jackson, Mellette, Perkins, Tripp and 1 more | 2 hr |
| Sep 18, 8:39 PM CDT | Special Weather Statement | UNR | Fall River | 36 min |
| Sep 19, 12:51 AM CDT | Dense Fog Advisory | FSD | Aurora, Brule, Jerauld | 9 hr |
| Sep 19, 4:02 AM CDT | Dense Fog Advisory | ABR | Buffalo, Campbell, Day, Deuel, Edmunds, Faulk and 11 more | 6 hr |
| Sep 23, 6:24 PM CDT | Severe Thunderstorm Warning | UNR | Perkins | 51 min |
| Sep 23, 7:15 PM CDT | Severe Thunderstorm Warning | UNR | Perkins | 60 min |
| Sep 23, 8:36 PM CDT | Special Weather Statement | ABR | Corson | 24 min |
| Sep 25, 2:02 AM CDT | Dense Fog Advisory | ABR | Brown, Buffalo, Campbell, Corson, Dewey, Edmunds and 12 more | 9 hr |
| Sep 25, 5:56 AM CDT | Dense Fog Advisory | UNR | Mellette, Todd, Tripp | 5 hr |
| Sep 27, 1:30 AM CDT | Dense Fog Advisory | FSD | Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 12 more | 10 hr |
| Sep 27, 2:26 AM CDT | Dense Fog Advisory | ABR | Brown, Buffalo, Campbell, Clark, Codington, Day and 18 more | 10 hr |
| Sep 27, 5:56 AM CDT | Dense Fog Advisory | UNR | Haakon, Jackson, Mellette, Todd, Tripp | 5 hr |
| Sep 27, 8:04 AM CDT | Special Weather Statement | ABR | Dewey | 26 min |
| Sep 27, 8:18 AM CDT | Special Weather Statement | ABR | Dewey | 42 min |
| Sep 27, 8:28 AM CDT | Special Weather Statement | ABR | Dewey | 32 min |
| Sep 27, 8:56 AM CDT | Special Weather Statement | ABR | Stanley | 34 min |
| Sep 27, 9:13 AM CDT | Severe Thunderstorm Warning | ABR | Dewey, Stanley, Sully | 47 min |
| Sep 27, 9:43 AM CDT | Special Weather Statement | ABR | Stanley | 32 min |
| Sep 27, 9:58 AM CDT | Severe Thunderstorm Warning | ABR | Sully | 41 min |
| Sep 27, 10:54 AM CDT | Special Weather Statement | ABR | Stanley | 36 min |
| Sep 27, 11:33 AM CDT | Special Weather Statement | UNR | Haakon | 27 min |
| Sep 27, 11:45 AM CDT | Severe Thunderstorm Warning | ABR | Stanley | 49 min |
| Sep 27, 12:30 PM CDT | Special Weather Statement | ABR | Stanley | 30 min |
| Sep 28, 6:30 AM CDT | Areal Flood Warning | ABR | Dewey | 6 hr |
| Sep 28, 6:37 AM CDT | Dense Fog Advisory | ABR | Grant, Roberts | 3 hr |
| Sep 28, 6:57 AM CDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 48 min |
| Sep 28, 8:04 AM CDT | Special Weather Statement | ABR | Campbell | 41 min |
| Sep 28, 8:32 AM CDT | Special Weather Statement | ABR | Corson | 43 min |
| Sep 28, 9:24 AM CDT | Special Weather Statement | ABR | Campbell | 36 min |
| Sep 28, 9:34 AM CDT | Areal Flood Warning | ABR | Campbell, Corson | 6 hr |
| Sep 28, 2:40 PM CDT | Mesoscale Discussion | SPC | Butte, Corson, Custer, Dewey, Haakon, Harding and 5 more | 2 hr |
| Sep 28, 4:08 PM CDT | Special Weather Statement | UNR | Butte | 22 min |
| Sep 28, 4:35 PM CDT | Special Weather Statement | UNR | Butte | 25 min |
| Sep 28, 4:46 PM CDT | Severe Thunderstorm Warning | UNR | Butte | 23 min |
| Sep 28, 5:30 PM CDT | Flood Watch | ABR | Campbell, Corson, Dewey | 10 hr |
| Sep 28, 6:42 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 33 min |
| Sep 28, 7:28 PM CDT | Special Weather Statement | LBF | Bennett | 47 min |
| Sep 30, 1:43 AM CDT | Dense Fog Advisory | FSD | Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more | 8 hr |
| Sep 30, 1:50 AM CDT | Dense Fog Advisory | ABR | Buffalo, Clark, Codington, Deuel, Hamlin, Hand and 2 more | 8 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 | 65 |
| Tornado Warning | 3 |
| Severe Thunderstorm Watch | 4 |
| Mesoscale Discussion | 11 |
| Special Weather Statement | 53 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 3 |
| Flood Watch | 2 |
| Heat | |
| Heat Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 6 |
| Fog and smoke | |
| Dense Fog Advisory | 16 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Charles Mix County30
- Bon Homme County23
- Dewey County21
- Hutchinson County20
- Yankton County20
- Gregory County16
- Lincoln County16
- Douglas County15
- Union County15
- Clay County14
- Turner County14
- Corson County14
- Sully County14
- Stanley County13
- Campbell County13
- Potter County12
- Aurora County11
- Hanson County11
- Minnehaha County11
- Walworth County11
- Davison County10
- McCook County10
- Custer County10
- Oglala Lakota County10
- Hyde County10
- Lake County9
- Moody County9
- Grant County9
- Hand County9
- Lyman County9
- Brookings County9
- Buffalo County9
- Hughes County9
- Brule County8
- Miner County8
- Sanborn County8
- Fall River County8
- Pennington County8
- Edmunds County8
- Jerauld County8
26 more counties
- Deuel County8
- McPherson County8
- Jackson County7
- Roberts County7
- Jones County7
- Bennett County6
- Tripp County6
- Butte County6
- Faulk County6
- Codington County6
- Hamlin County6
- Kingsbury County6
- Perkins County6
- Spink County5
- Todd County5
- Haakon County5
- Meade County5
- Mellette County5
- Brown County4
- Beadle County4
- Ziebach County4
- Harding County4
- Clark County3
- Day County3
- Marshall County3
- Lawrence County1
Nearby
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.