Alert archive / South Dakota / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in South Dakota, 2017
544 severe thunderstorm warnings in 2017. 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 severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Severe Thunderstorm Warnings
- 544
- Busiest month
- July174 severe thunderstorm warnings
- Busiest day
- June 13, 201750 severe thunderstorm warnings
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
396 of 544 severe thunderstorm warnings covering South Dakota in 2017 had a qualifying storm report inside them; 629 of 723 hail, wind and damage reports fell inside a warning, on average 22 minutes after it went out.
South Dakota, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Severe thunderstorm warnings | 544 | 396 | 27% | 723 | 87% | 22 min |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Sioux Falls, SD: severe thunderstorm warnings | 270 | 214 | 21% | 354 | 87% | 19 min |
| NWS Aberdeen, SD: severe thunderstorm warnings | 201 | 138 | 31% | 306 | 81% | 20 min |
| NWS Rapid City, SD: severe thunderstorm warnings | 183 | 121 | 34% | 257 | 88% | 27 min |
An office's figures cover every county it serves, including across state lines.
Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.
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 15, 6:29 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Yankton | 46 min |
| Apr 15, 7:00 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Union | 45 min |
| Apr 17, 9:09 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Harding | 81 min |
| Apr 17, 9:40 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Lawrence, Meade | 65 min |
| Apr 17, 10:37 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Meade, Pennington, Ziebach | 53 min |
| May 7, 3:46 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence | 29 min |
| May 13, 7:13 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 47 min |
| May 15, 12:32 AM CDT | Severe Thunderstorm Warning | UNR | Fall River, Oglala Lakota | 58 min |
| May 15, 1:34 AM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 56 min |
| May 15, 8:08 AM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Davison, Douglas, Hanson, Hutchinson | 37 min |
| May 15, 8:37 AM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Hutchinson, McCook | 23 min |
| May 15, 8:45 AM CDT | Severe Thunderstorm Warning | FSD | Hutchinson, McCook, Turner | 30 min |
| May 15, 10:54 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 66 min |
| May 15, 11:29 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme | 46 min |
| May 16, 1:30 AM CDT | Severe Thunderstorm Warning | UNR | Meade | 28 min |
| May 16, 1:47 AM CDT | Severe Thunderstorm Warning | UNR | Bennett, Todd | 46 min |
| May 16, 2:42 AM CDT | Severe Thunderstorm Warning | FSD | Brookings | 33 min |
| May 16, 3:02 AM CDT | Severe Thunderstorm Warning | ABR | Deuel, Grant | 28 min |
| May 16, 5:00 AM CDT | Severe Thunderstorm Warning | ABR | Day, Marshall | 30 min |
| May 16, 6:55 AM CDT | Severe Thunderstorm Warning | ABR | Edmunds, McPherson | 29 min |
| May 17, 2:34 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha | 26 min |
| May 28, 4:26 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Day, Edmunds, Spink | 34 min |
| May 28, 4:54 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Clark, Codington, Day, Spink | 36 min |
| May 28, 5:25 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Deuel, Hamlin, Spink | 50 min |
| May 28, 6:22 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury, Lake, Moody | 38 min |
| May 28, 6:53 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha, Moody | 21 min |
| Jun 5, 3:37 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade | 53 min |
| Jun 5, 3:55 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence | 50 min |
| Jun 5, 5:10 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 35 min |
| Jun 5, 5:46 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 29 min |
| Jun 5, 5:52 PM CDT | Severe Thunderstorm Warning | UNR | Harding | 38 min |
| Jun 5, 6:01 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 44 min |
| Jun 5, 9:19 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 56 min |
| Jun 7, 2:07 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Pennington | 53 min |
| Jun 7, 2:58 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Pennington | 62 min |
| Jun 7, 5:01 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Pennington | 44 min |
| Jun 7, 5:27 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Union | 21 min |
| Jun 7, 5:34 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 56 min |
| Jun 7, 5:40 PM CDT | Severe Thunderstorm Warning | UNR | Fall River | 46 min |
| Jun 7, 6:14 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 34 min |
| Jun 10, 9:58 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 50 min |
| Jun 10, 10:24 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade, Pennington | 66 min |
| Jun 10, 11:51 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade, Pennington | 54 min |
| Jun 11, 1:26 AM CDT | Severe Thunderstorm Warning | ABR | Jones, Lyman, Stanley | 31 min |
| Jun 11, 1:30 AM CDT | Severe Thunderstorm Warning | ABR | Hughes, Jones, Lyman, Stanley | 45 min |
| Jun 11, 1:40 AM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand, Hughes, Hyde, Lyman | 50 min |
| Jun 11, 2:05 AM CDT | Severe Thunderstorm Warning | UNR | Butte, Lawrence, Meade | 55 min |
| Jun 11, 2:15 AM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand, Hughes, Hyde, Lyman, Stanley | 45 min |
| Jun 11, 2:26 AM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand, Hyde | 49 min |
| Jun 11, 2:46 AM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hughes, Hyde, Lyman | 44 min |
| Jun 11, 3:03 AM CDT | Severe Thunderstorm Warning | FSD | Beadle, Jerauld | 27 min |
| Jun 11, 3:07 AM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand, Spink | 38 min |
| Jun 11, 3:13 AM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand, Hyde | 47 min |
| Jun 11, 3:25 AM CDT | Severe Thunderstorm Warning | FSD | Beadle, Jerauld | 50 min |
| Jun 11, 3:28 AM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand, Hyde, Lyman | 62 min |
| Jun 11, 3:58 AM CDT | Severe Thunderstorm Warning | ABR | Deuel, Grant | 19 min |
| Jun 11, 4:05 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Beadle, Davison, Jerauld, Kingsbury, Miner and 1 more | 40 min |
| Jun 11, 4:35 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Beadle, Davison, Hanson, Jerauld, Kingsbury and 3 more | 40 min |
| Jun 11, 4:37 AM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Day, Grant | 27 min |
| Jun 11, 4:52 AM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Deuel, Hamlin, Spink | 38 min |
| Jun 11, 5:04 AM CDT | Severe Thunderstorm Warning | FSD | Brookings, Hanson, Kingsbury, Lake, McCook, Miner and 1 more | 41 min |
| Jun 11, 5:23 AM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Deuel, Grant, Hamlin | 52 min |
| Jun 11, 5:38 AM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury, Lake, Moody | 37 min |
| Jun 11, 6:02 AM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Grant, Roberts | 43 min |
| Jun 11, 6:07 AM CDT | Severe Thunderstorm Warning | FSD | Brookings, Moody | 38 min |
| Jun 12, 9:16 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Turner, Yankton | 29 min |
| Jun 12, 9:52 AM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Hutchinson, Lincoln, Turner, Yankton | 19 min |
| Jun 12, 10:02 AM CDT | Severe Thunderstorm Warning | FSD | Lake, Moody | 28 min |
| Jun 12, 10:06 AM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Hutchinson, Yankton | 39 min |
| Jun 12, 10:25 AM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 35 min |
| Jun 12, 10:35 AM CDT | Severe Thunderstorm Warning | FSD | Hutchinson, Turner, Yankton | 40 min |
| Jun 12, 10:49 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha, Turner | 26 min |
| Jun 12, 11:09 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha | 36 min |
| Jun 12, 12:08 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Union | 38 min |
| Jun 12, 7:23 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River, Oglala Lakota | 82 min |
| Jun 12, 8:43 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River, Oglala Lakota | 62 min |
| Jun 12, 9:31 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Oglala Lakota | 44 min |
| Jun 12, 9:43 PM CDT | Severe Thunderstorm Warning | UNR | Oglala Lakota, Pennington | 34 min |
| Jun 12, 10:13 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Jackson, Oglala Lakota, Pennington | 62 min |
| Jun 12, 10:53 PM CDT | Severe Thunderstorm Warning | UNR | Fall River | 67 min |
| Jun 12, 10:59 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Haakon, Jackson, Mellette, Todd | 76 min |
| Jun 12, 11:41 PM CDT | Severe Thunderstorm Warning | ABR | Jones, Stanley | 49 min |
| Jun 12, 11:51 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River, Oglala Lakota, Pennington | 54 min |
| Jun 13, 12:14 AM CDT | Severe Thunderstorm Warning | UNR | Bennett, Jackson, Mellette, Todd | 50 min |
| Jun 13, 12:21 AM CDT | Severe Thunderstorm Warning | ABR | Hughes, Jones, Stanley | 39 min |
| Jun 13, 12:43 AM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River, Oglala Lakota, Pennington | 77 min |
| Jun 13, 12:53 AM CDT | Severe Thunderstorm Warning | UNR | Bennett, Jackson, Mellette, Todd | 24 min |
| Jun 13, 1:22 AM CDT | Severe Thunderstorm Warning | ABR | Hughes, Stanley, Sully | 38 min |
| Jun 13, 2:02 AM CDT | Severe Thunderstorm Warning | ABR | Faulk, Hand, Hughes, Hyde, Potter, Sully | 43 min |
| Jun 13, 2:39 AM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, Faulk, Hand, Hyde, Spink | 51 min |
| Jun 13, 3:36 AM CDT | Severe Thunderstorm Warning | ABR | Brown, Marshall | 39 min |
| Jun 13, 5:04 AM CDT | Severe Thunderstorm Warning | ABR | Day, Grant, Marshall, Roberts | 24 min |
| Jun 13, 7:07 AM CDT | Severe Thunderstorm Warning | ABR | Codington, Hamlin | 25 min |
| Jun 13, 3:26 PM CDT | Severe Thunderstorm Warning | FSD | Gregory | 34 min |
| Jun 13, 3:28 PM CDT | Severe Thunderstorm Warning | ABR | Hand | 47 min |
| Jun 13, 3:56 PM CDT | Severe Thunderstorm Warning | FSD | Brule, Charles Mix, Gregory | 34 min |
| Jun 13, 4:08 PM CDT | Severe Thunderstorm Warning | ABR | Faulk, Hand, Spink | 52 min |
| Jun 13, 4:19 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 41 min |
| Jun 13, 4:25 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Charles Mix | 35 min |
| Jun 13, 4:27 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 33 min |
| Jun 13, 4:29 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Stanley, Sully | 46 min |
| Jun 13, 4:46 PM CDT | Severe Thunderstorm Warning | ABR | Potter, Walworth | 44 min |
| Jun 13, 4:51 PM CDT | Severe Thunderstorm Warning | ABR | Faulk, Hand, Spink | 39 min |
| Jun 13, 5:06 PM CDT | Severe Thunderstorm Warning | ABR | Faulk, Hughes, Hyde, Potter, Sully | 39 min |
| Jun 13, 5:13 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 32 min |
| Jun 13, 5:16 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Beadle, Brule, Jerauld, Sanborn | 44 min |
| Jun 13, 5:17 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Spink | 43 min |
| Jun 13, 5:20 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Charles Mix, Douglas | 25 min |
| Jun 13, 5:28 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Edmunds, McPherson, Potter, Walworth | 47 min |
| Jun 13, 5:35 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 25 min |
| Jun 13, 5:40 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas, Gregory | 35 min |
| Jun 13, 5:43 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds, Faulk, Hand, Hyde | 47 min |
| Jun 13, 5:44 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Day, Spink | 46 min |
| Jun 13, 5:45 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Douglas | 30 min |
| Jun 13, 5:51 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Charles Mix, Davison, Douglas | 24 min |
| Jun 13, 6:18 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Kingsbury, Sanborn | 42 min |
| Jun 13, 6:25 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Miner, Sanborn | 50 min |
| Jun 13, 6:28 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Douglas, Hanson, Hutchinson | 32 min |
| Jun 13, 6:31 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix, Douglas, Hutchinson | 44 min |
| Jun 13, 6:43 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Spink | 47 min |
| Jun 13, 6:49 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Charles Mix, Davison, Douglas, Hanson, Hutchinson | 26 min |
| Jun 13, 6:56 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury, Lake, Miner | 34 min |
| Jun 13, 6:59 PM CDT | Severe Thunderstorm Warning | ABR | Brown | 46 min |
| Jun 13, 6:59 PM CDT | Severe Thunderstorm Warning | FSD | Hanson, Hutchinson, Lake, McCook, Miner, Sanborn and 1 more | 31 min |
| Jun 13, 7:10 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Clark, Codington, Day, Grant, Hamlin and 3 more | 65 min |
| Jun 13, 7:12 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Hanson, Hutchinson, Turner | 33 min |
| Jun 13, 7:16 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Deuel, Grant, Hamlin | 59 min |
| Jun 13, 7:22 PM CDT | Severe Thunderstorm Warning | ABR | Marshall | 23 min |
| Jun 13, 7:24 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Day, Marshall | 21 min |
| Jun 13, 7:32 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Hanson, Hutchinson, McCook, Turner, Yankton | 28 min |
| Jun 13, 7:38 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Day, Marshall | 52 min |
| Jun 13, 7:53 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson, McCook, Minnehaha, Turner | 37 min |
| Jun 13, 8:03 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Grant, Roberts | 42 min |
| Jun 13, 8:12 PM CDT | Severe Thunderstorm Warning | ABR | Marshall, Roberts | 33 min |
| Jun 13, 8:16 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha, Turner | 29 min |
| Jun 13, 8:23 PM CDT | Severe Thunderstorm Warning | FSD | McCook, Minnehaha, Turner | 37 min |
| Jun 13, 8:38 PM CDT | Severe Thunderstorm Warning | ABR | Roberts | 22 min |
| Jun 13, 8:41 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha, Moody, Turner | 34 min |
| Jun 13, 8:43 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Lincoln, Turner | 47 min |
| Jun 13, 9:10 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Lincoln, Union | 50 min |
| Jun 13, 9:13 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Lincoln, Minnehaha | 47 min |
| Jun 13, 9:16 PM CDT | Severe Thunderstorm Warning | FSD | Union | 44 min |
| Jun 13, 9:18 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha, Moody | 42 min |
| Jun 18, 7:21 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Day | 16 min |
| Jun 18, 7:40 PM CDT | Severe Thunderstorm Warning | ABR | Day, Marshall, Roberts | 18 min |
| Jun 21, 2:53 AM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Lyman | 52 min |
| Jun 21, 3:22 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Jerauld | 38 min |
| Jun 22, 3:02 AM CDT | Severe Thunderstorm Warning | ABR | Hughes, Stanley | 43 min |
| Jun 22, 3:08 AM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Hamlin | 67 min |
| Jun 22, 3:30 AM CDT | Severe Thunderstorm Warning | FSD | Beadle, Kingsbury | 45 min |
| Jun 22, 3:35 AM CDT | Severe Thunderstorm Warning | ABR | Clark, Hamlin | 25 min |
| Jun 22, 3:45 AM CDT | Severe Thunderstorm Warning | FSD | Brookings | 45 min |
| Jun 22, 3:48 AM CDT | Severe Thunderstorm Warning | ABR | Deuel | 12 min |
| Jun 22, 3:53 AM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand, Hughes, Hyde, Lyman | 52 min |
| Jun 22, 4:34 AM CDT | Severe Thunderstorm Warning | FSD | Jerauld | 41 min |
| Jun 22, 4:38 AM CDT | Severe Thunderstorm Warning | ABR | Hughes, Stanley, Sully | 52 min |
| Jun 22, 5:02 AM CDT | Severe Thunderstorm Warning | FSD | Jerauld, Miner, Sanborn | 43 min |
| Jun 22, 5:10 AM CDT | Severe Thunderstorm Warning | ABR | Hughes, Stanley | 50 min |
| Jun 22, 5:44 AM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook, Miner | 35 min |
| Jun 22, 6:08 AM CDT | Severe Thunderstorm Warning | ABR | Hughes, Hyde, Sully | 52 min |
| Jun 22, 6:57 AM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury | 33 min |
| Jun 27, 5:47 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River, Oglala Lakota, Pennington | 58 min |
| Jun 27, 6:26 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Jackson, Oglala Lakota | 79 min |
| Jun 27, 6:34 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 56 min |
| Jun 27, 6:41 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Jackson, Oglala Lakota, Pennington | 64 min |
| Jun 27, 7:21 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson, Meade, Mellette, Pennington | 54 min |
| Jun 27, 7:37 PM CDT | Severe Thunderstorm Warning | ABR | Jones, Stanley | 53 min |
| Jun 27, 8:29 PM CDT | Severe Thunderstorm Warning | ABR | Dewey, Hughes, Stanley, Sully | 46 min |
| Jun 27, 10:24 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Davison, Douglas, Hutchinson | 51 min |
| Jun 27, 11:00 PM CDT | Severe Thunderstorm Warning | FSD | Turner, Yankton | 45 min |
| Jun 27, 11:02 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha | 43 min |
| Jun 27, 11:22 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Turner | 53 min |
| Jun 27, 11:34 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas, Hutchinson | 41 min |
| Jun 27, 11:47 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Turner | 43 min |
| Jun 28, 3:18 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 42 min |
| Jun 28, 5:46 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 59 min |
| Jun 28, 6:36 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 54 min |
| Jun 28, 8:00 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 29 min |
| Jun 29, 3:22 PM CDT | Severe Thunderstorm Warning | FSD | Union | 53 min |
| Jun 29, 3:41 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas | 34 min |
| Jun 29, 3:47 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Douglas | 28 min |
| Jun 29, 3:48 PM CDT | Severe Thunderstorm Warning | FSD | Union | 42 min |
| Jun 29, 3:57 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas | 33 min |
| Jun 29, 4:06 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas | 24 min |
| Jun 29, 4:15 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix, Douglas, Hutchinson | 30 min |
| Jun 29, 4:16 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix | 29 min |
| Jun 29, 4:26 PM CDT | Severe Thunderstorm Warning | FSD | Union | 49 min |
| Jun 29, 4:40 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix, Douglas, Hutchinson | 35 min |
| Jun 29, 5:01 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Hutchinson, Yankton | 29 min |
| Jun 29, 5:23 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Hutchinson, Turner, Yankton | 37 min |
| Jun 29, 5:39 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Turner, Yankton | 36 min |
| Jun 29, 6:03 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Union, Yankton | 27 min |
| Jun 29, 6:27 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Union | 33 min |
| Jul 3, 7:33 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Lincoln, Turner | 42 min |
| Jul 4, 2:59 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 28 min |
| Jul 4, 4:34 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Perkins, Ziebach | 56 min |
| Jul 4, 5:26 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Perkins, Ziebach | 49 min |
| Jul 4, 11:17 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand | 28 min |
| Jul 5, 6:16 PM CDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 44 min |
| Jul 5, 6:19 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds | 41 min |
| Jul 5, 6:32 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, Spink | 43 min |
| Jul 5, 6:42 PM CDT | Severe Thunderstorm Warning | ABR | Faulk, Hand, Spink | 48 min |
| Jul 5, 6:57 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Day | 26 min |
| Jul 5, 7:08 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Spink | 52 min |
| Jul 5, 7:54 PM CDT | Severe Thunderstorm Warning | ABR | Dewey, Stanley, Sully | 51 min |
| Jul 5, 7:54 PM CDT | Severe Thunderstorm Warning | ABR | Spink | 51 min |
| Jul 5, 8:02 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds, McPherson | 21 min |
| Jul 5, 8:20 PM CDT | Severe Thunderstorm Warning | ABR | Dewey, Hughes, Stanley, Sully | 40 min |
| Jul 5, 8:26 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds | 19 min |
| Jul 5, 8:31 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 29 min |
| Jul 5, 8:32 PM CDT | Severe Thunderstorm Warning | ABR | Spink | 26 min |
| Jul 5, 8:45 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds | 30 min |
| Jul 5, 8:57 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Jones, Lyman, Stanley | 48 min |
| Jul 5, 9:01 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Day, Marshall | 30 min |
| Jul 5, 9:14 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand, Hyde | 46 min |
| Jul 5, 9:27 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand, Hughes, Hyde, Jones, Lyman and 1 more | 78 min |
| Jul 5, 9:36 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Todd, Tripp | 69 min |
| Jul 5, 10:16 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Charles Mix, Gregory, Jerauld | 44 min |
| Jul 5, 10:25 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Jerauld, Sanborn | 35 min |
| Jul 5, 11:03 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Hanson, Sanborn | 42 min |
| Jul 7, 8:13 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson, Pennington | 62 min |
| Jul 7, 9:13 PM CDT | Severe Thunderstorm Warning | UNR | Jackson, Mellette | 47 min |
| Jul 9, 4:29 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix | 31 min |
| Jul 9, 5:50 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 25 min |
| Jul 11, 3:51 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 38 min |
| Jul 11, 4:49 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Oglala Lakota, Pennington | 56 min |
| Jul 11, 5:44 PM CDT | Severe Thunderstorm Warning | UNR | Jackson, Oglala Lakota, Pennington | 46 min |
| Jul 11, 6:19 PM CDT | Severe Thunderstorm Warning | ABR | Day, Roberts | 41 min |
| Jul 11, 6:31 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Hamlin | 59 min |
| Jul 11, 6:45 PM CDT | Severe Thunderstorm Warning | ABR | Codington | 45 min |
| Jul 11, 6:58 PM CDT | Severe Thunderstorm Warning | ABR | Roberts | 47 min |
| Jul 11, 7:00 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Hamlin | 45 min |
| Jul 11, 7:24 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Grant | 51 min |
| Jul 11, 7:25 PM CDT | Severe Thunderstorm Warning | ABR | Deuel, Hamlin | 50 min |
| Jul 11, 7:33 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 42 min |
| Jul 11, 7:51 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Hamlin | 39 min |
| Jul 11, 8:07 PM CDT | Severe Thunderstorm Warning | ABR | Roberts | 68 min |
| Jul 11, 8:08 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison | 37 min |
| Jul 11, 8:22 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Hamlin | 27 min |
| Jul 11, 8:35 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison | 40 min |
| Jul 11, 8:36 PM CDT | Severe Thunderstorm Warning | FSD | Hanson, McCook, Miner, Sanborn | 24 min |
| Jul 11, 8:56 PM CDT | Severe Thunderstorm Warning | FSD | Brookings | 34 min |
| Jul 11, 9:08 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Hutchinson | 37 min |
| Jul 11, 9:25 PM CDT | Severe Thunderstorm Warning | FSD | Hanson, Hutchinson, McCook | 35 min |
| Jul 11, 9:29 PM CDT | Severe Thunderstorm Warning | FSD | Brookings | 31 min |
| Jul 11, 9:36 PM CDT | Severe Thunderstorm Warning | ABR | Deuel, Hamlin | 24 min |
| Jul 11, 9:44 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Hamlin | 46 min |
| Jul 11, 9:46 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury | 29 min |
| Jul 11, 9:49 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Deuel, Hamlin | 41 min |
| Jul 11, 9:57 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury | 33 min |
| Jul 11, 10:00 PM CDT | Severe Thunderstorm Warning | FSD | Brookings | 30 min |
| Jul 11, 10:02 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade, Pennington | 43 min |
| Jul 11, 10:27 PM CDT | Severe Thunderstorm Warning | FSD | Brookings | 33 min |
| Jul 11, 10:28 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Hamlin | 47 min |
| Jul 11, 10:29 PM CDT | Severe Thunderstorm Warning | FSD | Brookings | 31 min |
| Jul 11, 10:45 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Lawrence, Meade, Pennington | 60 min |
| Jul 11, 10:48 PM CDT | Severe Thunderstorm Warning | FSD | Brookings | 27 min |
| Jul 11, 11:10 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Moody | 35 min |
| Jul 17, 2:42 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 63 min |
| Jul 17, 5:01 PM CDT | Severe Thunderstorm Warning | UNR | Fall River, Oglala Lakota | 37 min |
| Jul 17, 6:12 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Hamlin | 18 min |
| Jul 17, 6:19 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hughes, Lyman | 56 min |
| Jul 17, 6:28 PM CDT | Severe Thunderstorm Warning | ABR | Roberts | 32 min |
| Jul 17, 6:50 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 40 min |
| Jul 17, 7:05 PM CDT | Severe Thunderstorm Warning | ABR | Clark | 25 min |
| Jul 17, 7:12 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Lyman | 63 min |
| Jul 17, 7:14 PM CDT | Severe Thunderstorm Warning | FSD | Brule, Jerauld | 46 min |
| Jul 17, 7:16 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 44 min |
| Jul 17, 7:23 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 56 min |
| Jul 17, 7:34 PM CDT | Severe Thunderstorm Warning | UNR | Todd, Tripp | 49 min |
| Jul 17, 7:44 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Kingsbury | 46 min |
| Jul 17, 7:48 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 57 min |
| Jul 17, 7:55 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Kingsbury | 35 min |
| Jul 17, 8:10 PM CDT | Severe Thunderstorm Warning | FSD | Kingsbury, Lake, Miner | 35 min |
| Jul 17, 8:21 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 24 min |
| Jul 17, 8:40 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury, Lake, Miner | 50 min |
| Jul 17, 9:22 PM CDT | Severe Thunderstorm Warning | UNR | Oglala Lakota | 68 min |
| Jul 17, 9:40 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Miner, Sanborn | 35 min |
| Jul 17, 9:49 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 41 min |
| Jul 17, 11:49 PM CDT | Severe Thunderstorm Warning | UNR | Todd | 37 min |
| Jul 18, 3:26 AM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson, Edmunds, McPherson, Walworth | 64 min |
| Jul 18, 6:17 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade, Pennington | 38 min |
| Jul 18, 6:59 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Harding | 61 min |
| Jul 18, 7:55 PM CDT | Severe Thunderstorm Warning | UNR | Butte | 65 min |
| Jul 18, 8:37 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Meade | 53 min |
| Jul 18, 9:24 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 66 min |
| Jul 18, 10:21 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson, Pennington | 25 min |
| Jul 19, 7:29 AM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson, Dewey, Walworth | 46 min |
| Jul 19, 8:18 AM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson, Walworth | 57 min |
| Jul 19, 8:56 AM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson, Edmunds, Walworth | 49 min |
| Jul 19, 9:17 AM CDT | Severe Thunderstorm Warning | ABR | Dewey, Edmunds, Potter, Walworth | 43 min |
| Jul 19, 9:37 AM CDT | Severe Thunderstorm Warning | ABR | Edmunds, Faulk, Walworth | 38 min |
| Jul 19, 9:46 AM CDT | Severe Thunderstorm Warning | ABR | Faulk, Hyde, Potter, Sully | 44 min |
| Jul 19, 10:09 AM CDT | Severe Thunderstorm Warning | ABR | Edmunds, Faulk, Potter | 51 min |
| Jul 19, 10:24 AM CDT | Severe Thunderstorm Warning | ABR | Faulk, Hand, Hyde, Spink | 66 min |
| Jul 19, 10:53 AM CDT | Severe Thunderstorm Warning | FSD | Beadle, Jerauld, Sanborn | 52 min |
| Jul 19, 11:45 AM CDT | Severe Thunderstorm Warning | FSD | Beadle, Kingsbury, Miner, Sanborn | 45 min |
| Jul 19, 12:18 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury, Lake, Miner | 27 min |
| Jul 19, 1:15 PM CDT | Severe Thunderstorm Warning | FSD | Brookings | 45 min |
| Jul 19, 1:44 PM CDT | Severe Thunderstorm Warning | FSD | Brookings | 31 min |
| Jul 19, 3:30 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 45 min |
| Jul 19, 4:07 PM CDT | Severe Thunderstorm Warning | FSD | Gregory | 53 min |
| Jul 19, 4:45 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 45 min |
| Jul 19, 5:08 PM CDT | Severe Thunderstorm Warning | UNR | Todd, Tripp | 38 min |
| Jul 20, 6:01 PM CDT | Severe Thunderstorm Warning | UNR | Harding | 74 min |
| Jul 20, 6:48 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Harding, Perkins | 72 min |
| Jul 20, 7:56 PM CDT | Severe Thunderstorm Warning | ABR | Corson | 49 min |
| Jul 20, 8:32 PM CDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 43 min |
| Jul 20, 9:13 PM CDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 62 min |
| Jul 20, 9:45 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson, Dewey, Potter, Walworth | 60 min |
| Jul 20, 10:41 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Dewey, Edmunds, McPherson, Potter, Sully and 1 more | 64 min |
| Jul 21, 5:52 AM CDT | Severe Thunderstorm Warning | FSD | Kingsbury | 38 min |
| Jul 21, 6:06 AM CDT | Severe Thunderstorm Warning | FSD | Jerauld | 24 min |
| Jul 21, 6:30 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Beadle, Jerauld, Sanborn | 15 min |
| Jul 21, 6:16 PM CDT | Severe Thunderstorm Warning | ABR | Roberts | 44 min |
| Jul 21, 6:56 PM CDT | Severe Thunderstorm Warning | ABR | Roberts | 51 min |
| Jul 21, 7:31 PM CDT | Severe Thunderstorm Warning | ABR | Corson | 44 min |
| Jul 21, 7:49 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds | 41 min |
| Jul 21, 8:09 PM CDT | Severe Thunderstorm Warning | ABR | Faulk, Hyde, Potter, Sully | 51 min |
| Jul 21, 8:14 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds, McPherson | 28 min |
| Jul 21, 8:25 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds, Faulk | 50 min |
| Jul 21, 8:52 PM CDT | Severe Thunderstorm Warning | ABR | Faulk, Hand | 38 min |
| Jul 21, 9:21 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds, Walworth | 11 min |
| Jul 21, 9:48 PM CDT | Severe Thunderstorm Warning | ABR | Faulk, Hand, Spink | 42 min |
| Jul 21, 9:58 PM CDT | Severe Thunderstorm Warning | ABR | Potter | 18 min |
| Jul 21, 10:21 PM CDT | Severe Thunderstorm Warning | ABR | Faulk, Hand, Spink | 39 min |
| Jul 21, 10:27 PM CDT | Severe Thunderstorm Warning | ABR | Hand, Spink | 48 min |
| Jul 21, 10:42 PM CDT | Severe Thunderstorm Warning | ABR | Spink | 48 min |
| Jul 21, 10:44 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Spink | 46 min |
| Jul 21, 10:45 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 45 min |
| Jul 21, 11:11 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Spink | 64 min |
| Jul 21, 11:13 PM CDT | Severe Thunderstorm Warning | ABR | Hand, Spink | 32 min |
| Jul 21, 11:17 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Kingsbury | 43 min |
| Jul 21, 11:18 PM CDT | Severe Thunderstorm Warning | ABR | Hand, Hyde | 42 min |
| Jul 21, 11:27 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Day, Hamlin, Spink | 63 min |
| Jul 21, 11:43 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 47 min |
| Jul 21, 11:47 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand, Hyde | 28 min |
| Jul 22, 12:28 AM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Grant, Hamlin | 32 min |
| Jul 22, 1:27 AM CDT | Severe Thunderstorm Warning | FSD | Hanson, Lake, McCook, Miner | 48 min |
| Jul 22, 2:24 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Turner | 36 min |
| Jul 22, 3:26 AM CDT | Severe Thunderstorm Warning | FSD | Union | 26 min |
| Jul 24, 3:21 PM CDT | Severe Thunderstorm Warning | ABR | Jones, Stanley | 39 min |
| Jul 24, 6:41 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 51 min |
| Jul 24, 7:50 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 55 min |
| Jul 25, 12:19 AM CDT | Severe Thunderstorm Warning | ABR | Grant | 41 min |
| Jul 25, 4:09 PM CDT | Severe Thunderstorm Warning | FSD | Brookings | 51 min |
| Jul 25, 4:16 PM CDT | Severe Thunderstorm Warning | ABR | Deuel | 29 min |
| Jul 25, 4:34 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Hanson, Jerauld, Miner, Sanborn | 41 min |
| Jul 25, 4:52 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Moody | 38 min |
| Jul 25, 4:58 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Lake, Miner, Sanborn | 47 min |
| Jul 25, 5:21 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Davison, Jerauld, Sanborn | 39 min |
| Jul 25, 5:31 PM CDT | Severe Thunderstorm Warning | FSD | Kingsbury, Lake, Miner, Sanborn | 44 min |
| Jul 25, 6:19 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Todd, Tripp | 56 min |
| Jul 25, 6:23 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 55 min |
| Jul 25, 7:03 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Tripp | 57 min |
| Jul 25, 7:13 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 32 min |
| Jul 25, 7:59 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hughes, Lyman | 31 min |
| Jul 25, 8:21 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Hanson, Jerauld, Sanborn | 39 min |
| Jul 25, 8:51 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Miner, Sanborn | 39 min |
| Jul 27, 5:50 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Pennington | 34 min |
| Jul 28, 3:20 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 33 min |
| Jul 29, 6:34 PM CDT | Severe Thunderstorm Warning | ABR | Dewey | 41 min |
| Jul 30, 2:17 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Todd, Tripp | 58 min |
| Jul 30, 3:41 PM CDT | Severe Thunderstorm Warning | UNR | Fall River | 24 min |
| Jul 30, 5:08 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Ziebach | 40 min |
| Jul 31, 4:25 PM CDT | Severe Thunderstorm Warning | UNR | Perkins | 65 min |
| Jul 31, 6:14 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Perkins | 44 min |
| Jul 31, 8:48 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 57 min |
| Aug 1, 10:07 AM CDT | Severe Thunderstorm Warning | ABR | Dewey, Sully | 24 min |
| Aug 1, 12:36 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Tripp | 37 min |
| Aug 1, 1:49 PM CDT | Severe Thunderstorm Warning | FSD | Brule, Charles Mix | 41 min |
| Aug 1, 3:26 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson | 34 min |
| Aug 1, 3:59 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 31 min |
| Aug 1, 4:16 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 29 min |
| Aug 1, 4:30 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 30 min |
| Aug 2, 5:26 PM CDT | Severe Thunderstorm Warning | ABR | Dewey | 64 min |
| Aug 5, 6:34 PM CDT | Severe Thunderstorm Warning | UNR | Perkins | 56 min |
| Aug 5, 7:24 PM CDT | Severe Thunderstorm Warning | UNR | Perkins | 66 min |
| Aug 6, 4:45 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Todd, Tripp | 60 min |
| Aug 6, 5:42 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 30 min |
| Aug 9, 6:06 PM CDT | Severe Thunderstorm Warning | ABR | Day, Grant, Roberts | 19 min |
| Aug 9, 6:28 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Grant | 47 min |
| Aug 11, 6:58 PM CDT | Severe Thunderstorm Warning | UNR | Harding, Perkins | 62 min |
| Aug 12, 2:06 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 39 min |
| Aug 12, 2:16 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Tripp | 59 min |
| Aug 12, 2:18 PM CDT | Severe Thunderstorm Warning | ABR | Jones, Lyman | 57 min |
| Aug 12, 2:31 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Edmunds, McPherson, Walworth | 44 min |
| Aug 12, 2:44 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Lyman | 46 min |
| Aug 12, 3:01 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 44 min |
| Aug 12, 3:08 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Tripp | 67 min |
| Aug 12, 3:28 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 47 min |
| Aug 12, 3:35 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Lyman, Stanley | 19 min |
| Aug 12, 3:45 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 45 min |
| Aug 12, 4:05 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule | 40 min |
| Aug 12, 4:12 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 63 min |
| Aug 12, 4:31 PM CDT | Severe Thunderstorm Warning | UNR | Harding, Perkins | 59 min |
| Aug 12, 5:10 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 62 min |
| Aug 12, 5:27 PM CDT | Severe Thunderstorm Warning | UNR | Perkins | 49 min |
| Aug 12, 5:53 PM CDT | Severe Thunderstorm Warning | FSD | Gregory | 37 min |
| Aug 12, 6:41 PM CDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 34 min |
| Aug 12, 7:14 PM CDT | Severe Thunderstorm Warning | ABR | Corson | 46 min |
| Aug 12, 7:31 PM CDT | Severe Thunderstorm Warning | UNR | Perkins | 59 min |
| Aug 12, 7:54 PM CDT | Severe Thunderstorm Warning | ABR | Corson | 51 min |
| Aug 12, 8:32 PM CDT | Severe Thunderstorm Warning | ABR | Dewey, Potter, Sully | 43 min |
| Aug 12, 9:12 PM CDT | Severe Thunderstorm Warning | ABR | Dewey, Potter, Sully | 63 min |
| Aug 13, 11:29 AM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Deuel, Hamlin | 32 min |
| Aug 13, 3:16 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas | 44 min |
| Aug 13, 3:54 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas, Hutchinson | 51 min |
| Aug 13, 4:20 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix, Douglas, Hutchinson | 25 min |
| Aug 13, 4:24 PM CDT | Severe Thunderstorm Warning | FSD | Hanson, Hutchinson, McCook, Turner | 36 min |
| Aug 13, 5:15 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix | 30 min |
| Aug 13, 5:42 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 33 min |
| Aug 13, 5:52 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha, Moody | 23 min |
| Aug 13, 6:39 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme | 21 min |
| Aug 13, 6:44 PM CDT | Severe Thunderstorm Warning | FSD | McCook, Minnehaha | 31 min |
| Aug 13, 7:14 PM CDT | Severe Thunderstorm Warning | FSD | McCook, Minnehaha, Turner | 31 min |
| Aug 14, 4:44 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade, Pennington | 61 min |
| Aug 14, 5:44 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 39 min |
| Aug 14, 6:01 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade, Pennington | 59 min |
| Aug 14, 6:46 PM CDT | Severe Thunderstorm Warning | UNR | Oglala Lakota, Pennington | 45 min |
| Aug 14, 7:00 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 60 min |
| Aug 14, 7:24 PM CDT | Severe Thunderstorm Warning | UNR | Oglala Lakota | 66 min |
| Aug 14, 7:37 PM CDT | Severe Thunderstorm Warning | UNR | Butte | 53 min |
| Aug 14, 7:50 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 41 min |
| Aug 14, 8:26 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence | 49 min |
| Aug 14, 8:37 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Oglala Lakota | 68 min |
| Aug 14, 9:16 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Meade | 33 min |
| Aug 14, 9:50 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Oglala Lakota | 55 min |
| Aug 15, 8:06 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Todd | 54 min |
| Aug 15, 8:55 PM CDT | Severe Thunderstorm Warning | UNR | Todd | 47 min |
| Aug 18, 2:16 PM CDT | Severe Thunderstorm Warning | ABR | Grant | 44 min |
| Aug 18, 2:59 PM CDT | Severe Thunderstorm Warning | ABR | Grant | 46 min |
| Aug 18, 3:51 PM CDT | Severe Thunderstorm Warning | ABR | Deuel, Grant | 24 min |
| Aug 18, 4:24 PM CDT | Severe Thunderstorm Warning | ABR | Deuel | 51 min |
| Aug 19, 9:30 PM CDT | Severe Thunderstorm Warning | FSD | Union | 29 min |
| Aug 19, 9:54 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Union | 36 min |
| Aug 21, 4:34 AM CDT | Severe Thunderstorm Warning | UNR | Ziebach | 56 min |
| Aug 21, 5:16 AM CDT | Severe Thunderstorm Warning | UNR | Ziebach | 44 min |
| Aug 21, 5:41 AM CDT | Severe Thunderstorm Warning | ABR | Dewey, Stanley, Sully | 64 min |
| Aug 21, 6:04 AM CDT | Severe Thunderstorm Warning | UNR | Haakon, Ziebach | 41 min |
| Aug 21, 6:36 AM CDT | Severe Thunderstorm Warning | ABR | Dewey, Hughes, Potter, Stanley, Sully | 34 min |
| Aug 21, 6:37 AM CDT | Severe Thunderstorm Warning | UNR | Haakon, Ziebach | 53 min |
| Aug 21, 7:45 AM CDT | Severe Thunderstorm Warning | ABR | Codington, Grant | 20 min |
| Aug 21, 7:54 AM CDT | Severe Thunderstorm Warning | ABR | Hughes, Jones, Lyman, Stanley, Sully | 66 min |
| Aug 21, 8:38 AM CDT | Severe Thunderstorm Warning | ABR | Jones, Stanley | 52 min |
| Aug 21, 8:55 AM CDT | Severe Thunderstorm Warning | ABR | Hughes, Lyman, Stanley | 65 min |
| Aug 21, 9:07 AM CDT | Severe Thunderstorm Warning | ABR | Jones | 38 min |
| Aug 21, 9:19 AM CDT | Severe Thunderstorm Warning | ABR | Jones, Lyman | 41 min |
| Aug 21, 9:42 AM CDT | Severe Thunderstorm Warning | ABR | Jones, Lyman | 33 min |
| Aug 21, 9:42 AM CDT | Severe Thunderstorm Warning | UNR | Mellette, Tripp | 63 min |
| Aug 21, 9:50 AM CDT | Severe Thunderstorm Warning | ABR | Lyman | 40 min |
| Aug 21, 10:16 AM CDT | Severe Thunderstorm Warning | ABR | Lyman | 30 min |
| Aug 21, 10:29 AM CDT | Severe Thunderstorm Warning | ABR | Lyman | 46 min |
| Aug 21, 10:39 AM CDT | Severe Thunderstorm Warning | FSD | Brule, Charles Mix, Gregory | 51 min |
| Aug 21, 10:42 AM CDT | Severe Thunderstorm Warning | ABR | Lyman | 33 min |
| Aug 21, 11:06 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln, McCook, Minnehaha, Turner | 39 min |
| Aug 21, 11:23 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Charles Mix, Douglas, Gregory | 52 min |
| Aug 21, 12:05 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Charles Mix, Davison, Douglas, Gregory, Hutchinson | 40 min |
| Aug 21, 12:33 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Davison, Douglas, Hanson, Hutchinson, Yankton | 42 min |
| Aug 21, 12:48 PM CDT | Severe Thunderstorm Warning | FSD | Turner | 27 min |
| Aug 21, 1:06 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Clay, Hutchinson, Turner, Yankton | 39 min |
| Aug 21, 1:40 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Lincoln, Turner, Union, Yankton | 50 min |
| Aug 25, 10:33 AM CDT | Severe Thunderstorm Warning | UNR | Ziebach | 57 min |
| Aug 25, 1:40 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Ziebach | 50 min |
| Aug 25, 3:14 PM CDT | Severe Thunderstorm Warning | ABR | Potter, Sully | 46 min |
| Aug 25, 3:22 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 38 min |
| Aug 25, 3:23 PM CDT | Severe Thunderstorm Warning | ABR | Faulk | 52 min |
| Aug 25, 4:12 PM CDT | Severe Thunderstorm Warning | UNR | Todd | 63 min |
| Aug 25, 4:36 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 54 min |
| Aug 25, 5:12 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 63 min |
| Aug 25, 5:23 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Day | 52 min |
| Aug 25, 5:32 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 58 min |
| Aug 25, 5:42 PM CDT | Severe Thunderstorm Warning | FSD | Brule, Charles Mix, Gregory | 63 min |
| Aug 25, 5:43 PM CDT | Severe Thunderstorm Warning | UNR | Todd, Tripp | 25 min |
| Aug 25, 5:47 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 43 min |
| Aug 25, 6:03 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Day, Deuel, Grant | 42 min |
| Aug 25, 6:36 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Kingsbury, Miner, Sanborn | 39 min |
| Aug 25, 6:48 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Jerauld, Sanborn | 57 min |
| Aug 25, 7:00 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury, Lake, Miner | 45 min |
| Aug 25, 7:28 PM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook, Miner, Minnehaha | 47 min |
| Aug 26, 2:08 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 67 min |
| Aug 26, 3:02 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 58 min |
| Aug 26, 3:47 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River, Oglala Lakota | 58 min |
| Aug 26, 4:14 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade | 46 min |
| Aug 26, 4:27 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Meade, Pennington, Ziebach | 63 min |
| Aug 26, 4:28 PM CDT | Severe Thunderstorm Warning | UNR | Fall River, Oglala Lakota | 50 min |
| Aug 26, 4:53 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson | 67 min |
| Aug 26, 4:57 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 63 min |
| Aug 26, 5:05 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade | 25 min |
| Aug 26, 5:27 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 24 min |
| Aug 26, 5:30 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 23 min |
| Aug 26, 5:45 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson, Mellette | 60 min |
| Aug 26, 6:37 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Jackson, Mellette, Todd | 53 min |
| Aug 26, 6:38 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 52 min |
| Aug 26, 7:00 PM CDT | Severe Thunderstorm Warning | ABR | Jones | 17 min |
| Aug 26, 7:10 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 50 min |
| Aug 26, 7:29 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 61 min |
| Aug 26, 8:08 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Ziebach | 33 min |
| Aug 26, 8:42 PM CDT | Severe Thunderstorm Warning | ABR | Jones | 48 min |
| Aug 26, 10:33 PM CDT | Severe Thunderstorm Warning | UNR | Todd, Tripp | 42 min |
| Aug 26, 11:21 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Todd | 54 min |
| Sep 8, 6:57 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 48 min |
| Sep 8, 7:44 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 46 min |
| Sep 8, 10:25 PM CDT | Severe Thunderstorm Warning | UNR | Jackson, Oglala Lakota, Pennington | 65 min |
| Sep 15, 6:30 PM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook, Miner | 45 min |
| Sep 15, 6:59 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury, Lake, Miner | 46 min |
| Sep 19, 1:28 PM CDT | Severe Thunderstorm Warning | ABR | McPherson | 47 min |
| Sep 19, 2:43 PM CDT | Severe Thunderstorm Warning | ABR | McPherson | 17 min |
| Sep 19, 6:27 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Edmunds, McPherson, Walworth | 33 min |
| Sep 19, 6:40 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, McPherson | 50 min |
| Sep 19, 6:55 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Edmunds, McPherson, Walworth | 34 min |
| Sep 19, 7:29 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Marshall | 46 min |
| Sep 19, 7:46 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Spink | 44 min |
| Sep 19, 7:59 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 31 min |
| Sep 19, 8:12 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Marshall | 33 min |
| Sep 19, 8:23 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Day, Marshall, Spink | 37 min |
| Sep 19, 8:38 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Beadle, Jerauld, Sanborn | 52 min |
| Sep 19, 8:41 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Marshall | 34 min |
| Sep 19, 8:53 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule | 52 min |
| Sep 19, 8:57 PM CDT | Severe Thunderstorm Warning | FSD | Gregory | 48 min |
| Sep 19, 9:21 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Jerauld, Kingsbury, Miner, Sanborn | 39 min |
| Sep 19, 9:41 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Hanson, Sanborn | 49 min |
| Sep 19, 9:55 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Kingsbury, Miner, Sanborn | 46 min |
| Sep 19, 10:00 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Douglas, Hanson, Hutchinson | 45 min |
| Sep 19, 10:15 PM CDT | Severe Thunderstorm Warning | FSD | Kingsbury, Lake, Miner, Sanborn | 45 min |
| Sep 19, 10:39 PM CDT | Severe Thunderstorm Warning | FSD | Hanson, Kingsbury, Lake, McCook, Miner, Minnehaha and 1 more | 36 min |
| Sep 19, 10:49 PM CDT | Severe Thunderstorm Warning | ABR | Grant, Roberts | 41 min |
| Sep 19, 11:08 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Lake, McCook, Minnehaha, Moody | 52 min |
| Sep 19, 11:26 PM CDT | Severe Thunderstorm Warning | ABR | Grant, Roberts | 19 min |
| Sep 19, 11:29 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha | 46 min |
| Sep 19, 11:47 PM CDT | Severe Thunderstorm Warning | FSD | Brookings | 43 min |
| Sep 22, 12:48 AM CDT | Severe Thunderstorm Warning | ABR | Day, Marshall | 57 min |
| Sep 22, 12:51 AM CDT | Severe Thunderstorm Warning | ABR | Day, Marshall, Roberts | 54 min |
| Sep 22, 12:55 AM CDT | Severe Thunderstorm Warning | ABR | Brown, Day, Spink | 65 min |
| Sep 22, 1:02 AM CDT | Severe Thunderstorm Warning | ABR | Roberts | 50 min |
| Sep 22, 1:45 AM CDT | Severe Thunderstorm Warning | ABR | Day, Marshall, Roberts | 60 min |
| Sep 22, 5:00 PM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook, Miner | 30 min |
| Sep 22, 5:48 PM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook, Minnehaha | 27 min |
| Sep 23, 12:27 PM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook, Miner | 33 min |
| Sep 23, 12:41 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury, Lake, Moody | 34 min |
| Sep 23, 1:16 PM CDT | Severe Thunderstorm Warning | FSD | Lake | 29 min |
| Sep 23, 1:45 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Lake, Moody | 45 min |
| Oct 6, 6:51 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Union | 24 min |
| Oct 6, 7:14 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Union | 46 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Pennington County47
- Meade County38
- Charles Mix County33
- Lyman County30
- Miner County30
- Hutchinson County29
- Brookings County29
- Spink County29
- Kingsbury County28
- Sanborn County28
- Codington County27
- Aurora County27
- Davison County26
- Turner County26
- Lake County26
- Hanson County25
- Deuel County25
- Brown County25
- Hughes County25
- Hand County25
- Beadle County25
- Custer County24
- Edmunds County24
- Douglas County23
- McCook County23
- Day County23
- Minnehaha County23
- Stanley County23
- Oglala Lakota County22
- Tripp County22
- Grant County21
- Lincoln County21
- Hamlin County21
- Jerauld County20
- Lawrence County19
- Hyde County19
- Roberts County19
- Sully County19
- Todd County18
- Mellette County18
26 more counties
- Dewey County18
- Marshall County17
- Clark County17
- Faulk County17
- Gregory County17
- Union County16
- Fall River County16
- Bon Homme County16
- Jones County16
- Buffalo County16
- Brule County16
- Clay County15
- Jackson County15
- Potter County15
- Yankton County14
- Moody County14
- Walworth County14
- Corson County13
- Haakon County12
- Ziebach County12
- McPherson County12
- Perkins County11
- Bennett County10
- Campbell County10
- Butte County9
- Harding County7
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.