Alert archive / South Dakota / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in South Dakota, 2012
535 severe thunderstorm warnings in 2012. 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 2012. Tap one for its archive.
- Severe Thunderstorm Warnings
- 535
- Busiest month
- June147 severe thunderstorm warnings
- Busiest day
- May 5, 201243 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.
379 of 537 severe thunderstorm warnings covering South Dakota in 2012 had a qualifying storm report inside them; 621 of 721 hail, wind and damage reports fell inside a warning, on average 23 minutes after it went out.
South Dakota, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Severe thunderstorm warnings | 537 | 379 | 29% | 721 | 86% | 23 min |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Sioux Falls, SD: severe thunderstorm warnings | 230 | 174 | 24% | 342 | 92% | 19 min |
| NWS Rapid City, SD: severe thunderstorm warnings | 259 | 192 | 26% | 349 | 86% | 23 min |
| NWS Aberdeen, SD: severe thunderstorm warnings | 189 | 124 | 34% | 274 | 84% | 22 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 |
|---|---|---|---|---|
| Mar 18, 10:11 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Todd, Tripp | 48 min |
| Mar 18, 10:42 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson, Ziebach | 51 min |
| Mar 19, 1:16 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Moody | 29 min |
| Mar 26, 7:06 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Custer, Lawrence, Meade, Pennington | 54 min |
| Mar 26, 8:24 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Meade, Pennington, Ziebach | 45 min |
| Mar 26, 8:37 PM CDT | Severe Thunderstorm Warning | ABR | Corson | 38 min |
| Mar 26, 9:14 PM CDT | Severe Thunderstorm Warning | ABR | Corson | 46 min |
| Mar 29, 8:11 AM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, McPherson | 38 min |
| Apr 6, 4:51 PM CDT | Severe Thunderstorm Warning | UNR | Fall River | 30 min |
| Apr 6, 5:37 PM CDT | Severe Thunderstorm Warning | UNR | 29 min | |
| Apr 15, 11:22 AM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Miner, Sanborn | 23 min |
| Apr 15, 11:45 AM CDT | Severe Thunderstorm Warning | FSD | Beadle, Kingsbury, Miner, Sanborn | 45 min |
| Apr 15, 3:19 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Moody | 16 min |
| May 1, 3:35 PM CDT | Severe Thunderstorm Warning | FSD | Gregory | 40 min |
| May 1, 4:02 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas | 28 min |
| May 1, 4:03 PM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook | 27 min |
| May 1, 5:16 PM CDT | Severe Thunderstorm Warning | FSD | Moody | 29 min |
| May 1, 6:18 PM CDT | Severe Thunderstorm Warning | FSD | Lake, Minnehaha | 27 min |
| May 1, 6:29 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson, Lincoln, McCook, Minnehaha, Turner | 46 min |
| May 1, 7:12 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 33 min |
| May 2, 7:28 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Day, Grant | 47 min |
| May 2, 8:07 PM CDT | Severe Thunderstorm Warning | ABR | Potter, Sully | 53 min |
| May 2, 8:14 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Day, Grant | 46 min |
| May 2, 9:25 PM CDT | Severe Thunderstorm Warning | ABR | Grant | 15 min |
| May 2, 10:49 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Clark, Day, Spink | 41 min |
| May 4, 5:04 AM CDT | Severe Thunderstorm Warning | UNR | Bennett, Jackson | 38 min |
| May 4, 5:32 AM CDT | Severe Thunderstorm Warning | UNR | Jackson, Mellette, Todd | 58 min |
| May 4, 6:28 AM CDT | Severe Thunderstorm Warning | UNR | Mellette, Todd, Tripp | 62 min |
| May 4, 7:16 AM CDT | Severe Thunderstorm Warning | UNR | Tripp | 26 min |
| May 4, 9:42 AM CDT | Severe Thunderstorm Warning | UNR | Mellette, Tripp | 93 min |
| May 4, 1:57 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, McCook, Minnehaha, Turner | 33 min |
| May 4, 3:00 PM CDT | Severe Thunderstorm Warning | FSD | Union | 30 min |
| May 4, 3:21 PM CDT | Severe Thunderstorm Warning | FSD | Douglas, Hanson, Hutchinson | 39 min |
| May 4, 4:36 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson, McCook, Turner | 18 min |
| May 5, 2:49 AM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade, Pennington | 56 min |
| May 5, 3:59 AM CDT | Severe Thunderstorm Warning | UNR | Custer, Lawrence, Pennington | 61 min |
| May 5, 4:45 AM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson, Pennington | 60 min |
| May 5, 4:55 AM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 51 min |
| May 5, 5:20 AM CDT | Severe Thunderstorm Warning | UNR | Jackson | 55 min |
| May 5, 5:39 AM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 66 min |
| May 5, 5:54 AM CDT | Severe Thunderstorm Warning | UNR | Jackson, Mellette | 66 min |
| May 5, 6:02 AM CDT | Severe Thunderstorm Warning | UNR | Tripp | 48 min |
| May 5, 6:10 AM CDT | Severe Thunderstorm Warning | ABR | Jones | 50 min |
| May 5, 6:21 AM CDT | Severe Thunderstorm Warning | ABR | Lyman | 39 min |
| May 5, 6:31 AM CDT | Severe Thunderstorm Warning | UNR | Jackson, Pennington | 59 min |
| May 5, 6:37 AM CDT | Severe Thunderstorm Warning | FSD | Brule, Charles Mix, Gregory | 23 min |
| May 5, 6:45 AM CDT | Severe Thunderstorm Warning | UNR | Pennington | 60 min |
| May 5, 6:50 AM CDT | Severe Thunderstorm Warning | ABR | Lyman | 25 min |
| May 5, 6:53 AM CDT | Severe Thunderstorm Warning | FSD | Brule, Charles Mix, Gregory | 37 min |
| May 5, 6:58 AM CDT | Severe Thunderstorm Warning | ABR | Jones, Lyman | 47 min |
| May 5, 7:24 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule | 36 min |
| May 5, 7:45 AM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Lyman | 45 min |
| May 5, 7:50 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule | 40 min |
| May 5, 8:03 AM CDT | Severe Thunderstorm Warning | FSD | Brule | 27 min |
| May 5, 8:16 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison | 29 min |
| May 5, 8:23 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Jerauld | 37 min |
| May 5, 8:24 AM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand | 25 min |
| May 5, 8:40 AM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson | 35 min |
| May 5, 8:52 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Sanborn | 23 min |
| May 5, 8:58 AM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hughes, Hyde, Lyman, Stanley, Sully | 47 min |
| May 5, 9:03 AM CDT | Severe Thunderstorm Warning | ABR | Jones, Lyman | 42 min |
| May 5, 9:08 AM CDT | Severe Thunderstorm Warning | FSD | Hanson, Lake, McCook, Miner | 37 min |
| May 5, 9:11 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Hanson | 34 min |
| May 5, 9:35 AM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook, Miner, Minnehaha | 25 min |
| May 5, 9:40 AM CDT | Severe Thunderstorm Warning | FSD | Hanson, McCook, Miner | 35 min |
| May 5, 9:53 AM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook, Minnehaha, Moody | 37 min |
| May 5, 9:55 AM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hughes, Hyde, Lyman | 50 min |
| May 5, 10:11 AM CDT | Severe Thunderstorm Warning | FSD | McCook, Minnehaha | 34 min |
| May 5, 10:25 AM CDT | Severe Thunderstorm Warning | FSD | Moody | 35 min |
| May 5, 10:29 AM CDT | Severe Thunderstorm Warning | ABR | Hand, Spink | 31 min |
| May 5, 10:36 AM CDT | Severe Thunderstorm Warning | FSD | Beadle | 24 min |
| May 5, 10:42 AM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 48 min |
| May 5, 12:18 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury | 27 min |
| May 5, 12:40 PM CDT | Severe Thunderstorm Warning | FSD | Brookings | 23 min |
| May 5, 6:20 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Sanborn | 25 min |
| May 5, 6:40 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Miner, Sanborn | 50 min |
| May 5, 6:51 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Beadle, Davison, Kingsbury, Miner, Sanborn | 39 min |
| May 5, 7:05 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, McCook, Miner | 25 min |
| May 5, 7:29 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Lake, McCook, Miner, Sanborn | 46 min |
| May 5, 7:30 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury, Miner, Sanborn | 45 min |
| May 5, 7:41 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Kingsbury | 36 min |
| May 5, 7:48 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Hamlin | 57 min |
| May 5, 7:59 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Hamlin | 61 min |
| May 5, 7:59 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 46 min |
| May 5, 8:11 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Lake, McCook, Miner, Minnehaha and 1 more | 49 min |
| May 5, 8:16 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury | 29 min |
| May 5, 8:18 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Grant, Hamlin | 57 min |
| May 5, 8:36 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Grant, Hamlin, Roberts | 54 min |
| May 5, 8:42 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury | 48 min |
| May 5, 8:43 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Hamlin | 47 min |
| May 5, 8:43 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Hamlin | 60 min |
| May 5, 8:46 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Charles Mix | 44 min |
| May 5, 8:56 PM CDT | Severe Thunderstorm Warning | ABR | Grant, Roberts | 41 min |
| May 5, 8:57 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Hanson, Lake, McCook, Miner, Minnehaha and 1 more | 48 min |
| May 5, 9:05 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Kingsbury, Miner, Sanborn | 25 min |
| May 5, 9:13 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Day, Grant, Marshall, Roberts | 41 min |
| May 5, 9:23 PM CDT | Severe Thunderstorm Warning | ABR | Grant, Roberts | 41 min |
| May 5, 9:26 PM CDT | Severe Thunderstorm Warning | FSD | Kingsbury, Miner, Sanborn | 23 min |
| May 5, 9:27 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule | 28 min |
| May 5, 9:29 PM CDT | Severe Thunderstorm Warning | ABR | Deuel | 16 min |
| May 5, 9:29 PM CDT | Severe Thunderstorm Warning | FSD | Brookings | 46 min |
| May 5, 9:42 PM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook, Minnehaha, Moody | 48 min |
| May 5, 10:02 PM CDT | Severe Thunderstorm Warning | FSD | Kingsbury, Miner, Sanborn | 28 min |
| May 5, 10:07 PM CDT | Severe Thunderstorm Warning | FSD | Brookings | 38 min |
| May 5, 10:28 PM CDT | Severe Thunderstorm Warning | FSD | Lake, Minnehaha, Moody | 62 min |
| May 5, 10:31 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Lake, Miner | 29 min |
| May 5, 10:57 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Lake | 33 min |
| May 5, 11:08 PM CDT | Severe Thunderstorm Warning | FSD | Hanson, Lake, McCook, Miner | 37 min |
| May 5, 11:25 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Lake, Moody | 65 min |
| May 5, 11:45 PM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook, Miner, Minnehaha | 45 min |
| May 6, 12:22 AM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook, Minnehaha, Moody | 38 min |
| May 17, 6:39 PM CDT | Severe Thunderstorm Warning | UNR | Jackson | 29 min |
| May 18, 3:46 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade | 46 min |
| May 18, 6:34 PM CDT | Severe Thunderstorm Warning | UNR | Jackson | 56 min |
| May 18, 6:59 PM CDT | Severe Thunderstorm Warning | UNR | Jackson | 61 min |
| May 18, 7:40 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson | 65 min |
| May 18, 7:59 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson, Mellette | 49 min |
| May 18, 8:31 PM CDT | Severe Thunderstorm Warning | ABR | Jones, Stanley | 44 min |
| May 19, 12:30 AM CDT | Severe Thunderstorm Warning | ABR | Faulk | 30 min |
| May 19, 1:07 AM CDT | Severe Thunderstorm Warning | ABR | Edmunds | 23 min |
| May 21, 7:08 PM CDT | Severe Thunderstorm Warning | UNR | Todd | 53 min |
| May 21, 7:50 PM CDT | Severe Thunderstorm Warning | UNR | Todd | 40 min |
| May 22, 6:34 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Edmunds, McPherson, Walworth | 41 min |
| May 22, 7:08 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Todd | 44 min |
| May 22, 7:13 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, McPherson | 23 min |
| May 22, 7:16 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds, McPherson, Walworth | 44 min |
| May 22, 7:23 PM CDT | Severe Thunderstorm Warning | UNR | Mellette | 22 min |
| May 22, 7:24 PM CDT | Severe Thunderstorm Warning | ABR | Jones, Lyman | 18 min |
| May 22, 8:00 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, McPherson | 33 min |
| May 22, 9:46 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 29 min |
| May 22, 11:19 PM CDT | Severe Thunderstorm Warning | ABR | Hand | 26 min |
| May 24, 4:37 PM CDT | Severe Thunderstorm Warning | ABR | Spink | 13 min |
| May 26, 4:20 AM CDT | Severe Thunderstorm Warning | FSD | Brule, Charles Mix, Gregory | 40 min |
| May 26, 4:35 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Davison | 40 min |
| May 26, 5:44 AM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, McCook, Miner, Sanborn | 46 min |
| May 26, 6:40 AM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury, Lake, Moody | 35 min |
| May 26, 8:58 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Jones, Lyman, Stanley, Sully | 30 min |
| May 26, 9:59 PM CDT | Severe Thunderstorm Warning | ABR | Hand, Hughes, Hyde, Sully | 46 min |
| May 26, 10:39 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Day, Marshall | 66 min |
| May 26, 10:43 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds, Faulk, Hand, Hyde, Potter, Sully | 62 min |
| May 26, 10:54 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, Faulk, McPherson | 51 min |
| May 26, 11:20 PM CDT | Severe Thunderstorm Warning | ABR | Marshall, Roberts | 25 min |
| May 26, 11:31 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, Faulk, Spink | 44 min |
| May 26, 11:43 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Marshall | 32 min |
| May 27, 12:28 AM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson, Dewey | 29 min |
| May 27, 5:27 PM CDT | Severe Thunderstorm Warning | FSD | Union | 33 min |
| May 27, 5:58 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 32 min |
| May 27, 6:24 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 36 min |
| May 27, 6:31 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Yankton | 44 min |
| May 27, 6:35 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha | 40 min |
| May 27, 7:11 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Union | 34 min |
| May 27, 7:31 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 29 min |
| May 27, 9:18 PM CDT | Severe Thunderstorm Warning | FSD | Union | 27 min |
| May 27, 9:42 PM CDT | Severe Thunderstorm Warning | FSD | Union | 10 min |
| May 28, 8:12 AM CDT | Severe Thunderstorm Warning | ABR | Marshall, Roberts | 19 min |
| Jun 1, 4:51 PM CDT | Severe Thunderstorm Warning | ABR | Brown | 39 min |
| Jun 1, 5:56 PM CDT | Severe Thunderstorm Warning | ABR | Brown | 34 min |
| Jun 1, 6:17 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Marshall | 43 min |
| Jun 1, 6:59 PM CDT | Severe Thunderstorm Warning | ABR | Day, Marshall | 46 min |
| Jun 1, 7:57 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Hamlin | 48 min |
| Jun 1, 9:47 PM CDT | Severe Thunderstorm Warning | FSD | Kingsbury | 28 min |
| Jun 2, 9:17 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 37 min |
| Jun 7, 2:51 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 54 min |
| Jun 7, 3:28 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River, Pennington | 62 min |
| Jun 7, 4:27 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River, Pennington | 63 min |
| Jun 7, 4:34 PM CDT | Severe Thunderstorm Warning | UNR | 41 min | |
| Jun 7, 4:37 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson | 53 min |
| Jun 7, 5:56 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson | 35 min |
| Jun 7, 6:03 PM CDT | Severe Thunderstorm Warning | UNR | Fall River | 49 min |
| Jun 7, 6:45 PM CDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 45 min |
| Jun 7, 7:25 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson, Dewey, Walworth | 36 min |
| Jun 7, 7:50 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson | 21 min |
| Jun 8, 12:02 AM CDT | Severe Thunderstorm Warning | UNR | Mellette | 32 min |
| Jun 9, 9:23 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Lawrence, Meade, Pennington | 15 min |
| Jun 9, 10:02 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Meade, Pennington | 58 min |
| Jun 9, 10:14 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 61 min |
| Jun 9, 10:26 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 64 min |
| Jun 9, 10:32 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson, Pennington | 58 min |
| Jun 9, 11:08 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Ziebach | 67 min |
| Jun 9, 11:13 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 62 min |
| Jun 9, 11:20 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 40 min |
| Jun 9, 11:22 PM CDT | Severe Thunderstorm Warning | ABR | Dewey, Stanley | 53 min |
| Jun 9, 11:35 PM CDT | Severe Thunderstorm Warning | UNR | Ziebach | 40 min |
| Jun 9, 11:42 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson | 48 min |
| Jun 10, 12:10 AM CDT | Severe Thunderstorm Warning | ABR | Dewey, Hughes, Potter, Stanley, Sully | 65 min |
| Jun 10, 12:29 AM CDT | Severe Thunderstorm Warning | UNR | Haakon | 61 min |
| Jun 10, 12:49 AM CDT | Severe Thunderstorm Warning | ABR | Hughes, Stanley, Sully | 26 min |
| Jun 10, 1:03 AM CDT | Severe Thunderstorm Warning | ABR | Campbell, Dewey, Edmunds, Faulk, McPherson, Potter and 2 more | 57 min |
| Jun 10, 1:13 AM CDT | Severe Thunderstorm Warning | ABR | Faulk, Hughes, Hyde, Potter, Sully | 62 min |
| Jun 10, 1:15 AM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hughes, Hyde, Lyman, Stanley, Sully | 30 min |
| Jun 10, 1:44 AM CDT | Severe Thunderstorm Warning | ABR | Hand, Hughes, Hyde, Sully | 31 min |
| Jun 10, 2:04 AM CDT | Severe Thunderstorm Warning | ABR | Campbell, Edmunds, Faulk, McPherson | 56 min |
| Jun 10, 3:53 AM CDT | Severe Thunderstorm Warning | ABR | Clark, Day, Marshall, Roberts | 37 min |
| Jun 10, 4:15 AM CDT | Severe Thunderstorm Warning | ABR | Marshall | 18 min |
| Jun 12, 5:15 PM CDT | Severe Thunderstorm Warning | UNR | 26 min | |
| Jun 12, 5:20 PM CDT | Severe Thunderstorm Warning | UNR | Butte | 40 min |
| Jun 12, 6:08 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 30 min |
| Jun 12, 6:50 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 55 min |
| Jun 12, 7:30 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 28 min |
| Jun 12, 9:00 PM CDT | Severe Thunderstorm Warning | UNR | Jackson | 34 min |
| Jun 13, 5:50 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Lyman | 40 min |
| Jun 13, 5:52 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 19 min |
| Jun 13, 5:56 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 49 min |
| Jun 13, 6:19 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand | 41 min |
| Jun 13, 6:22 PM CDT | Severe Thunderstorm Warning | FSD | Jerauld | 23 min |
| Jun 13, 6:47 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 43 min |
| Jun 13, 6:48 PM CDT | Severe Thunderstorm Warning | ABR | Hand | 20 min |
| Jun 13, 7:03 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand | 29 min |
| Jun 13, 7:13 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 47 min |
| Jun 13, 7:23 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 37 min |
| Jun 13, 8:16 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Charles Mix | 29 min |
| Jun 13, 8:30 PM CDT | Severe Thunderstorm Warning | UNR | Harding | 34 min |
| Jun 13, 8:45 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Charles Mix, Douglas | 45 min |
| Jun 13, 8:51 PM CDT | Severe Thunderstorm Warning | UNR | Perkins | 39 min |
| Jun 13, 9:13 PM CDT | Severe Thunderstorm Warning | UNR | Perkins | 29 min |
| Jun 13, 9:14 PM CDT | Severe Thunderstorm Warning | UNR | Perkins | 46 min |
| Jun 13, 9:27 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas | 48 min |
| Jun 13, 9:38 PM CDT | Severe Thunderstorm Warning | FSD | Sanborn | 22 min |
| Jun 13, 9:39 PM CDT | Severe Thunderstorm Warning | ABR | Corson | 51 min |
| Jun 13, 10:08 PM CDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 29 min |
| Jun 14, 2:34 AM CDT | Severe Thunderstorm Warning | ABR | Brown | 26 min |
| Jun 14, 2:50 AM CDT | Severe Thunderstorm Warning | ABR | Brown, McPherson | 40 min |
| Jun 14, 2:59 AM CDT | Severe Thunderstorm Warning | ABR | Brown, Marshall | 46 min |
| Jun 14, 3:00 AM CDT | Severe Thunderstorm Warning | ABR | Marshall, Roberts | 30 min |
| Jun 14, 3:30 AM CDT | Severe Thunderstorm Warning | ABR | Marshall, Roberts | 30 min |
| Jun 15, 3:18 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 57 min |
| Jun 15, 3:38 PM CDT | Severe Thunderstorm Warning | UNR | Fall River | 67 min |
| Jun 15, 4:36 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 54 min |
| Jun 15, 4:42 PM CDT | Severe Thunderstorm Warning | UNR | Fall River | 63 min |
| Jun 15, 5:09 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Jackson | 66 min |
| Jun 15, 5:18 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Meade, Pennington, Ziebach | 57 min |
| Jun 15, 5:27 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 46 min |
| Jun 15, 5:30 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 60 min |
| Jun 15, 6:09 PM CDT | Severe Thunderstorm Warning | UNR | Haakon | 40 min |
| Jun 15, 6:17 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 37 min |
| Jun 15, 7:05 PM CDT | Severe Thunderstorm Warning | UNR | Ziebach | 23 min |
| Jun 17, 5:06 PM CDT | Severe Thunderstorm Warning | ABR | Marshall | 39 min |
| Jun 17, 5:12 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, McPherson | 63 min |
| Jun 17, 5:32 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Day, Marshall | 58 min |
| Jun 17, 5:45 PM CDT | Severe Thunderstorm Warning | ABR | Marshall | 45 min |
| Jun 17, 5:50 PM CDT | Severe Thunderstorm Warning | ABR | Roberts | 40 min |
| Jun 17, 5:53 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Day, Marshall | 47 min |
| Jun 17, 5:53 PM CDT | Severe Thunderstorm Warning | ABR | Day, Marshall, Roberts | 52 min |
| Jun 17, 6:05 PM CDT | Severe Thunderstorm Warning | ABR | Roberts | 40 min |
| Jun 17, 6:40 PM CDT | Severe Thunderstorm Warning | ABR | Day, Marshall, Roberts | 65 min |
| Jun 17, 7:02 PM CDT | Severe Thunderstorm Warning | ABR | Day, Grant, Roberts | 43 min |
| Jun 17, 7:18 PM CDT | Severe Thunderstorm Warning | ABR | Roberts | 27 min |
| Jun 17, 7:24 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Hamlin | 51 min |
| Jun 17, 7:25 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Grant, Roberts | 50 min |
| Jun 17, 8:05 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Grant, Hamlin | 40 min |
| Jun 17, 8:11 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Grant, Roberts | 58 min |
| Jun 17, 8:45 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Grant | 30 min |
| Jun 18, 11:23 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Kingsbury | 37 min |
| Jun 18, 11:48 PM CDT | Severe Thunderstorm Warning | FSD | Kingsbury | 27 min |
| Jun 19, 12:11 AM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury | 49 min |
| Jun 19, 12:49 AM CDT | Severe Thunderstorm Warning | FSD | Brookings, Moody | 41 min |
| Jun 19, 2:34 AM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Day, Deuel, Grant, Roberts | 56 min |
| Jun 19, 2:43 AM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, McPherson, Marshall | 29 min |
| Jun 19, 2:51 AM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, McPherson | 39 min |
| Jun 19, 3:43 AM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Grant | 27 min |
| Jun 19, 10:48 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Todd | 31 min |
| Jun 19, 11:02 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Todd, Tripp | 17 min |
| Jun 19, 11:42 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Lyman | 63 min |
| Jun 20, 12:13 AM CDT | Severe Thunderstorm Warning | UNR | Tripp | 26 min |
| Jun 20, 1:18 AM CDT | Severe Thunderstorm Warning | UNR | Bennett, Todd | 57 min |
| Jun 22, 7:54 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 66 min |
| Jun 22, 8:15 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Meade, Pennington | 60 min |
| Jun 22, 8:39 PM CDT | Severe Thunderstorm Warning | UNR | Fall River | 66 min |
| Jun 22, 9:09 PM CDT | Severe Thunderstorm Warning | UNR | 66 min | |
| Jun 22, 9:45 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Jackson | 60 min |
| Jun 22, 10:03 PM CDT | Severe Thunderstorm Warning | UNR | Butte | 57 min |
| Jun 22, 10:52 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Todd | 53 min |
| Jun 22, 10:59 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Pennington | 61 min |
| Jun 22, 11:02 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Lawrence, Meade | 58 min |
| Jun 22, 11:55 PM CDT | Severe Thunderstorm Warning | UNR | Harding | 30 min |
| Jun 23, 1:03 AM CDT | Severe Thunderstorm Warning | UNR | Jackson, Pennington | 38 min |
| Jun 25, 6:21 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 54 min |
| Jun 25, 6:53 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River, Pennington | 52 min |
| Jun 25, 7:17 PM CDT | Severe Thunderstorm Warning | UNR | Butte | 58 min |
| Jun 25, 7:38 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Custer, Jackson, Pennington | 67 min |
| Jun 25, 8:17 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Lawrence | 39 min |
| Jun 25, 8:30 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Haakon, Jackson, Pennington | 60 min |
| Jun 25, 9:07 PM CDT | Severe Thunderstorm Warning | UNR | Jackson, Mellette | 53 min |
| Jun 25, 9:13 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson | 26 min |
| Jun 25, 9:55 PM CDT | Severe Thunderstorm Warning | ABR | Stanley | 18 min |
| Jun 25, 10:27 PM CDT | Severe Thunderstorm Warning | ABR | Dewey, Stanley, Sully | 48 min |
| Jun 25, 11:22 PM CDT | Severe Thunderstorm Warning | ABR | Faulk, Hand, Hyde, Potter, Sully | 20 min |
| Jun 29, 7:41 AM CDT | Severe Thunderstorm Warning | ABR | Dewey | 49 min |
| Jun 29, 8:13 AM CDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 34 min |
| Jun 29, 10:04 AM CDT | Severe Thunderstorm Warning | ABR | Campbell, Edmunds, Faulk, Hand, Hyde, McPherson and 2 more | 56 min |
| Jun 29, 5:37 PM CDT | Severe Thunderstorm Warning | FSD | Moody | 23 min |
| Jun 29, 5:55 PM CDT | Severe Thunderstorm Warning | FSD | Moody | 35 min |
| Jun 30, 2:53 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 67 min |
| Jun 30, 3:57 PM CDT | Severe Thunderstorm Warning | ABR | Corson | 48 min |
| Jun 30, 4:02 PM CDT | Severe Thunderstorm Warning | ABR | Corson | 43 min |
| Jun 30, 4:33 PM CDT | Severe Thunderstorm Warning | ABR | Corson | 42 min |
| Jun 30, 4:46 PM CDT | Severe Thunderstorm Warning | UNR | Ziebach | 59 min |
| Jun 30, 4:51 PM CDT | Severe Thunderstorm Warning | UNR | Fall River | 28 min |
| Jun 30, 5:15 PM CDT | Severe Thunderstorm Warning | UNR | Ziebach | 60 min |
| Jun 30, 6:01 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Perkins, Ziebach | 59 min |
| Jun 30, 6:41 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Meade, Ziebach | 64 min |
| Jun 30, 6:50 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 55 min |
| Jun 30, 7:09 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Meade, Pennington | 66 min |
| Jun 30, 7:54 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 66 min |
| Jun 30, 8:07 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson, Pennington | 53 min |
| Jun 30, 8:47 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Jackson, Pennington | 37 min |
| Jun 30, 8:56 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson | 26 min |
| Jun 30, 10:47 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 19 min |
| Jul 1, 6:48 PM CDT | Severe Thunderstorm Warning | UNR | Fall River | 57 min |
| Jul 1, 6:59 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Lawrence, Meade | 61 min |
| Jul 1, 8:54 PM CDT | Severe Thunderstorm Warning | UNR | Harding | 66 min |
| Jul 1, 10:00 PM CDT | Severe Thunderstorm Warning | UNR | Harding, Perkins | 60 min |
| Jul 1, 10:38 PM CDT | Severe Thunderstorm Warning | UNR | Perkins | 56 min |
| Jul 3, 4:09 AM CDT | Severe Thunderstorm Warning | UNR | Harding | 66 min |
| Jul 5, 6:36 PM CDT | Severe Thunderstorm Warning | UNR | Butte | 54 min |
| Jul 5, 6:53 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 67 min |
| Jul 5, 7:23 PM CDT | Severe Thunderstorm Warning | UNR | Butte | 40 min |
| Jul 5, 9:13 PM CDT | Severe Thunderstorm Warning | UNR | Fall River | 47 min |
| Jul 5, 9:38 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 52 min |
| Jul 5, 9:57 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Lawrence | 35 min |
| Jul 5, 10:47 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 28 min |
| Jul 12, 5:42 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 43 min |
| Jul 12, 5:43 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 47 min |
| Jul 12, 6:39 PM CDT | Severe Thunderstorm Warning | ABR | Spink | 19 min |
| Jul 12, 7:32 PM CDT | Severe Thunderstorm Warning | ABR | Roberts | 43 min |
| Jul 12, 8:53 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo | 27 min |
| Jul 14, 7:19 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Harding, Meade, Perkins | 56 min |
| Jul 16, 4:06 PM CDT | Severe Thunderstorm Warning | UNR | Harding | 54 min |
| Jul 16, 4:53 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Harding | 67 min |
| Jul 16, 5:40 PM CDT | Severe Thunderstorm Warning | UNR | Harding, Perkins | 65 min |
| Jul 16, 5:53 PM CDT | Severe Thunderstorm Warning | UNR | Perkins, Ziebach | 97 min |
| Jul 16, 6:04 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Harding | 41 min |
| Jul 16, 7:24 PM CDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 66 min |
| Jul 16, 7:44 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Perkins, Ziebach | 91 min |
| Jul 16, 8:59 PM CDT | Severe Thunderstorm Warning | ABR | Dewey | 61 min |
| Jul 16, 9:56 PM CDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 64 min |
| Jul 17, 2:09 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence | 66 min |
| Jul 17, 3:14 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Pennington | 61 min |
| Jul 17, 4:19 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 56 min |
| Jul 17, 5:11 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 53 min |
| Jul 17, 6:52 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 53 min |
| Jul 17, 7:42 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 63 min |
| Jul 17, 7:50 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Harding | 85 min |
| Jul 17, 8:16 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 59 min |
| Jul 17, 8:34 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 56 min |
| Jul 17, 8:44 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Harding, Perkins | 91 min |
| Jul 17, 9:30 PM CDT | Severe Thunderstorm Warning | UNR | Harding, Perkins | 69 min |
| Jul 17, 10:18 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 42 min |
| Jul 17, 10:49 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 41 min |
| Jul 17, 11:21 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hughes, Hyde, Lyman | 39 min |
| Jul 17, 11:51 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 54 min |
| Jul 18, 1:56 AM CDT | Severe Thunderstorm Warning | ABR | Spink | 49 min |
| Jul 19, 5:50 PM CDT | Severe Thunderstorm Warning | ABR | Jones, Lyman | 40 min |
| Jul 19, 6:18 PM CDT | Severe Thunderstorm Warning | ABR | Jones, Lyman | 24 min |
| Jul 19, 6:20 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Todd, Tripp | 55 min |
| Jul 19, 6:58 PM CDT | Severe Thunderstorm Warning | UNR | Todd, Tripp | 92 min |
| Jul 19, 7:34 PM CDT | Severe Thunderstorm Warning | FSD | Gregory | 41 min |
| Jul 19, 7:40 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Lyman | 28 min |
| Jul 19, 7:50 PM CDT | Severe Thunderstorm Warning | FSD | Brule, Charles Mix, Gregory | 40 min |
| Jul 19, 8:07 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 23 min |
| Jul 20, 4:32 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade | 58 min |
| Jul 20, 5:29 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Todd | 61 min |
| Jul 20, 6:20 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 55 min |
| Jul 20, 6:39 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 51 min |
| Jul 20, 7:40 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Lyman | 35 min |
| Jul 20, 8:09 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hughes, Hyde, Lyman | 36 min |
| Jul 20, 8:42 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo | 33 min |
| Jul 20, 9:32 PM CDT | Severe Thunderstorm Warning | FSD | Jerauld | 28 min |
| Jul 20, 10:56 PM CDT | Severe Thunderstorm Warning | UNR | Haakon | 64 min |
| Jul 20, 11:26 PM CDT | Severe Thunderstorm Warning | ABR | Jones, Stanley | 49 min |
| Jul 21, 12:07 AM CDT | Severe Thunderstorm Warning | ABR | Hughes, Stanley, Sully | 38 min |
| Jul 21, 3:03 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade | 42 min |
| Jul 21, 4:32 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 31 min |
| Jul 21, 5:26 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 64 min |
| Jul 21, 6:23 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence | 67 min |
| Jul 21, 6:29 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 10 min |
| Jul 21, 6:40 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Pennington | 65 min |
| Jul 21, 6:55 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Pennington | 18 min |
| Jul 21, 6:59 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade | 40 min |
| Jul 21, 7:03 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 40 min |
| Jul 21, 7:16 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 39 min |
| Jul 21, 7:21 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Lawrence | 24 min |
| Jul 21, 7:52 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade | 37 min |
| Jul 21, 8:27 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 55 min |
| Jul 21, 9:07 PM CDT | Severe Thunderstorm Warning | UNR | 68 min | |
| Jul 21, 9:46 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 17 min |
| Jul 21, 10:14 PM CDT | Severe Thunderstorm Warning | UNR | Bennett | 61 min |
| Jul 21, 11:02 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Jackson, Mellette, Todd | 58 min |
| Jul 22, 3:35 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson | 40 min |
| Jul 22, 4:21 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, McPherson | 39 min |
| Jul 22, 4:28 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson | 32 min |
| Jul 22, 4:55 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson | 50 min |
| Jul 22, 6:25 PM CDT | Severe Thunderstorm Warning | ABR | Corson | 50 min |
| Jul 22, 7:39 PM CDT | Severe Thunderstorm Warning | ABR | Corson | 38 min |
| Jul 22, 8:17 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Todd | 47 min |
| Jul 22, 9:55 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Tripp | 38 min |
| Jul 23, 5:30 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 60 min |
| Jul 23, 5:53 PM CDT | Severe Thunderstorm Warning | UNR | Butte | 40 min |
| Jul 23, 6:12 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 63 min |
| Jul 23, 6:28 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Meade, Perkins | 62 min |
| Jul 23, 6:54 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 46 min |
| Jul 23, 7:22 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 38 min |
| Jul 23, 7:48 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 57 min |
| Jul 23, 8:40 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Ziebach | 29 min |
| Jul 23, 10:01 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 59 min |
| Jul 23, 10:47 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 58 min |
| Jul 24, 3:32 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 29 min |
| Jul 24, 5:02 PM CDT | Severe Thunderstorm Warning | UNR | Butte | 58 min |
| Jul 24, 5:53 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Lawrence, Meade | 31 min |
| Jul 24, 6:03 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade | 51 min |
| Jul 24, 8:17 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson | 58 min |
| Jul 24, 9:05 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson, Ziebach | 39 min |
| Jul 24, 9:19 PM CDT | Severe Thunderstorm Warning | ABR | Jones, Stanley | 41 min |
| Jul 24, 9:42 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 63 min |
| Jul 24, 9:51 PM CDT | Severe Thunderstorm Warning | UNR | Harding | 54 min |
| Jul 24, 10:11 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 64 min |
| Jul 24, 10:27 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Stanley, Sully | 25 min |
| Jul 24, 11:33 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 57 min |
| Jul 24, 11:40 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Lawrence | 65 min |
| Jul 25, 12:02 AM CDT | Severe Thunderstorm Warning | UNR | Meade, Perkins, Ziebach | 58 min |
| Jul 25, 12:39 AM CDT | Severe Thunderstorm Warning | UNR | Haakon, Ziebach | 96 min |
| Jul 25, 12:56 AM CDT | Severe Thunderstorm Warning | UNR | Meade, Perkins, Ziebach | 64 min |
| Jul 25, 1:33 AM CDT | Severe Thunderstorm Warning | ABR | Dewey | 42 min |
| Jul 25, 3:41 AM CDT | Severe Thunderstorm Warning | ABR | Edmunds, McPherson | 49 min |
| Jul 25, 4:05 AM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, McPherson | 40 min |
| Jul 25, 4:44 AM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, McPherson | 14 min |
| Jul 25, 5:04 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Clark, Day, Spink | 41 min |
| Jul 25, 5:37 PM CDT | Severe Thunderstorm Warning | ABR | Spink | 13 min |
| Jul 27, 4:42 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Meade | 46 min |
| Jul 27, 5:04 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade | 39 min |
| Jul 27, 5:46 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade | 59 min |
| Jul 27, 6:29 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 61 min |
| Jul 27, 6:59 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Haakon, Jackson, Meade, Pennington | 61 min |
| Jul 27, 7:55 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson, Mellette, Pennington | 72 min |
| Jul 27, 11:12 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Todd | 50 min |
| Jul 29, 4:58 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson, Walworth | 31 min |
| Jul 29, 5:27 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Dewey, Edmunds, McPherson, Potter, Walworth | 24 min |
| Jul 29, 6:58 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds | 34 min |
| Jul 29, 8:37 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Lawrence | 38 min |
| Aug 1, 2:27 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Pennington | 63 min |
| Aug 1, 2:50 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson | 73 min |
| Aug 1, 3:08 PM CDT | Severe Thunderstorm Warning | ABR | Jones, Stanley | 52 min |
| Aug 1, 3:29 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Hyde, Jones, Lyman, Stanley | 61 min |
| Aug 1, 3:34 PM CDT | Severe Thunderstorm Warning | UNR | Bennett | 18 min |
| Aug 1, 3:37 PM CDT | Severe Thunderstorm Warning | UNR | Jackson, Mellette | 43 min |
| Aug 1, 3:59 PM CDT | Severe Thunderstorm Warning | ABR | Jones | 21 min |
| Aug 1, 4:45 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hughes, Lyman, Stanley | 20 min |
| Aug 1, 4:53 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Deuel, Hamlin | 41 min |
| Aug 1, 7:25 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas, Gregory | 35 min |
| Aug 2, 6:04 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence | 56 min |
| Aug 2, 6:53 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade, Pennington | 52 min |
| Aug 2, 7:08 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Meade, Perkins, Ziebach | 67 min |
| Aug 2, 7:41 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Meade, Ziebach | 39 min |
| Aug 2, 7:44 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 76 min |
| Aug 2, 8:20 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 55 min |
| Aug 2, 9:12 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Haakon, Jackson, Meade, Pennington | 63 min |
| Aug 2, 10:15 PM CDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson, Mellette | 39 min |
| Aug 2, 11:41 PM CDT | Severe Thunderstorm Warning | UNR | Bennett, Jackson, Mellette, Todd | 64 min |
| Aug 3, 12:23 AM CDT | Severe Thunderstorm Warning | UNR | Mellette, Todd, Tripp | 97 min |
| Aug 3, 2:01 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson, Dewey, Walworth | 44 min |
| Aug 3, 2:41 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson, Walworth | 64 min |
| Aug 3, 3:05 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson, Dewey, Walworth | 55 min |
| Aug 3, 3:40 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, Faulk, Spink | 65 min |
| Aug 3, 3:56 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Edmunds, McPherson, Walworth | 64 min |
| Aug 3, 4:35 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds, Faulk | 25 min |
| Aug 3, 4:44 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, Faulk, Spink | 61 min |
| Aug 3, 4:54 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, McPherson | 51 min |
| Aug 3, 5:17 PM CDT | Severe Thunderstorm Warning | ABR | Faulk, Hand, Hyde, Spink | 58 min |
| Aug 3, 5:34 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Clark, Day, McPherson, Marshall, Spink | 56 min |
| Aug 3, 5:53 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Day, Hand, Spink | 67 min |
| Aug 3, 6:00 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 45 min |
| Aug 3, 6:32 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Kingsbury, Sanborn | 43 min |
| Aug 3, 6:35 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Clark, Codington, Day, Hamlin, Spink | 25 min |
| Aug 3, 6:50 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Charles Mix, Douglas | 40 min |
| Aug 3, 6:53 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Day, Deuel, Grant, Hamlin | 67 min |
| Aug 3, 7:10 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Beadle, Davison, Jerauld, Kingsbury, Sanborn | 50 min |
| Aug 3, 7:23 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Kingsbury, Lake, Miner, Sanborn | 52 min |
| Aug 3, 7:46 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Davison, Hanson, Kingsbury, Lake, McCook and 2 more | 44 min |
| Aug 3, 7:59 PM CDT | Severe Thunderstorm Warning | ABR | Deuel, Hamlin | 31 min |
| Aug 3, 8:03 PM CDT | Severe Thunderstorm Warning | ABR | Roberts | 27 min |
| Aug 3, 8:23 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha, Moody | 52 min |
| Aug 7, 2:13 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 44 min |
| Aug 7, 4:09 PM CDT | Severe Thunderstorm Warning | UNR | Jackson, Pennington | 43 min |
| Aug 7, 4:31 PM CDT | Severe Thunderstorm Warning | UNR | Jackson, Pennington | 21 min |
| Aug 8, 3:21 AM CDT | Severe Thunderstorm Warning | FSD | Beadle, Kingsbury | 24 min |
| Aug 8, 3:44 AM CDT | Severe Thunderstorm Warning | FSD | Beadle, Kingsbury | 46 min |
| Aug 10, 2:54 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence | 51 min |
| Aug 10, 3:30 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence, Meade | 60 min |
| Aug 10, 4:08 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 67 min |
| Aug 10, 5:06 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 69 min |
| Aug 10, 5:54 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 66 min |
| Aug 10, 7:01 PM CDT | Severe Thunderstorm Warning | UNR | 40 min | |
| Aug 10, 8:29 PM CDT | Severe Thunderstorm Warning | UNR | Fall River | 61 min |
| Aug 10, 8:33 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 57 min |
| Aug 11, 7:28 PM CDT | Severe Thunderstorm Warning | UNR | 47 min | |
| Aug 11, 8:06 PM CDT | Severe Thunderstorm Warning | UNR | Bennett | 54 min |
| Aug 13, 7:52 PM CDT | Severe Thunderstorm Warning | UNR | Harding | 53 min |
| Aug 22, 6:07 PM CDT | Severe Thunderstorm Warning | UNR | Todd | 37 min |
| Aug 22, 9:25 PM CDT | Severe Thunderstorm Warning | ABR | Faulk, Hyde, Potter, Sully | 50 min |
| Aug 22, 9:55 PM CDT | Severe Thunderstorm Warning | ABR | Faulk, Hand, Hyde | 50 min |
| Aug 24, 6:20 PM CDT | Severe Thunderstorm Warning | ABR | Corson | 40 min |
| Aug 24, 6:57 PM CDT | Severe Thunderstorm Warning | ABR | Corson | 31 min |
| Aug 24, 6:58 PM CDT | Severe Thunderstorm Warning | UNR | Jackson, Pennington | 24 min |
| Aug 24, 7:00 PM CDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 29 min |
| Aug 24, 7:49 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson | 18 min |
| Aug 24, 7:50 PM CDT | Severe Thunderstorm Warning | ABR | Corson, Walworth | 40 min |
| Aug 26, 5:23 PM CDT | Severe Thunderstorm Warning | UNR | Bennett | 30 min |
| Aug 28, 3:37 AM CDT | Severe Thunderstorm Warning | ABR | Brown, McPherson | 36 min |
| Aug 28, 4:48 AM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Day | 33 min |
| Aug 28, 5:32 AM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington | 24 min |
| Sep 1, 6:38 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Meade, Pennington | 67 min |
| Sep 1, 7:11 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 49 min |
| Sep 3, 4:18 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Hyde, Sully | 42 min |
| Sep 3, 4:59 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Hyde | 46 min |
| Sep 3, 5:03 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds | 42 min |
| Sep 3, 5:24 PM CDT | Severe Thunderstorm Warning | ABR | Hand, Hyde | 51 min |
| Sep 3, 6:09 PM CDT | Severe Thunderstorm Warning | ABR | Hand | 37 min |
| Sep 3, 6:27 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Jerauld, Sanborn | 28 min |
| Sep 3, 7:14 PM CDT | Severe Thunderstorm Warning | FSD | Jerauld, Sanborn | 46 min |
| Sep 3, 7:59 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Jerauld, Sanborn | 46 min |
| Sep 4, 5:53 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Hyde, Lyman, Stanley | 35 min |
| Sep 4, 6:33 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Davison, Jerauld | 42 min |
| Sep 4, 6:43 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand, Hyde | 47 min |
| Sep 4, 6:45 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas, Hutchinson | 45 min |
| Sep 4, 7:06 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo | 24 min |
| Sep 4, 7:13 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Hanson, Sanborn | 47 min |
| Sep 4, 7:28 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo | 16 min |
| Sep 4, 7:37 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Jerauld | 38 min |
| Sep 4, 7:49 PM CDT | Severe Thunderstorm Warning | FSD | Hanson, Lake, McCook, Miner | 41 min |
| Sep 4, 7:59 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson | 31 min |
| Sep 4, 8:14 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Lincoln, Turner, Union | 46 min |
| Sep 4, 8:27 PM CDT | Severe Thunderstorm Warning | FSD | Hanson, McCook, Miner | 33 min |
| Sep 4, 8:52 PM CDT | Severe Thunderstorm Warning | FSD | Lake, Lincoln, McCook, Minnehaha, Moody, Turner | 38 min |
| Sep 4, 8:57 PM CDT | Severe Thunderstorm Warning | FSD | Union | 48 min |
| Sep 4, 9:28 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha, Moody | 47 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Pennington County67
- Meade County56
- Custer County42
- Jackson County40
- Haakon County31
- Lawrence County30
- Corson County28
- Brown County28
- Lyman County26
- Edmunds County25
- Butte County24
- Miner County23
- Mellette County22
- McPherson County22
- McCook County22
- Codington County22
- Sanborn County21
- Kingsbury County21
- Lake County21
- Davison County20
- Hyde County20
- Roberts County20
- Marshall County20
- Todd County19
- Ziebach County19
- Fall River County19
- Hanson County19
- Day County19
- Aurora County19
- Hughes County19
- Campbell County19
- Moody County18
- Buffalo County18
- Dewey County18
- Brookings County17
- Minnehaha County17
- Sully County17
- Brule County17
- Hand County17
- Stanley County17
24 more counties
- Grant County16
- Perkins County16
- Beadle County15
- Clark County15
- Bennett County15
- Faulk County15
- Harding County15
- Tripp County14
- Spink County14
- Deuel County14
- Charles Mix County13
- Jones County13
- Hamlin County13
- Walworth County12
- Lincoln County10
- Potter County9
- Jerauld County9
- Gregory County8
- Douglas County7
- Union County7
- Turner County5
- Hutchinson County4
- Clay County2
- Yankton County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20112013
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.