Alert archive / North Dakota / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in North Dakota, 2018
370 severe thunderstorm warnings in 2018. 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 2018. Tap one for its archive.
- Severe Thunderstorm Warnings
- 370
- Busiest month
- June170 severe thunderstorm warnings
- Busiest day
- June 29, 201843 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.
250 of 370 severe thunderstorm warnings covering North Dakota in 2018 had a qualifying storm report inside them; 529 of 603 hail, wind and damage reports fell inside a warning, on average 26 minutes after it went out.
North Dakota, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Severe thunderstorm warnings | 370 | 250 | 32% | 603 | 88% | 26 min |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Forks, ND: severe thunderstorm warnings | 188 | 168 | 11% | 533 | 84% | 26 min |
| NWS Bismarck, ND: severe thunderstorm warnings | 275 | 164 | 40% | 315 | 90% | 28 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 |
|---|---|---|---|---|
| May 7, 6:10 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton | 39 min |
| May 17, 8:41 AM CDT | Severe Thunderstorm Warning | BIS | McHenry | 64 min |
| May 17, 3:26 PM CDT | Severe Thunderstorm Warning | BIS | Sioux | 64 min |
| May 17, 3:36 PM CDT | Severe Thunderstorm Warning | BIS | Dickey, Logan, McIntosh | 54 min |
| May 17, 4:52 PM CDT | Severe Thunderstorm Warning | BIS | Emmons | 45 min |
| May 17, 5:27 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Sioux | 36 min |
| May 22, 5:47 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Sioux | 58 min |
| May 22, 6:33 PM CDT | Severe Thunderstorm Warning | BIS | Grant | 57 min |
| May 22, 6:42 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Hettinger | 63 min |
| May 22, 6:45 PM CDT | Severe Thunderstorm Warning | BIS | Morton, Oliver | 43 min |
| May 22, 7:00 PM CDT | Severe Thunderstorm Warning | BIS | Stutsman | 60 min |
| May 22, 7:22 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Hettinger | 53 min |
| May 22, 8:12 PM CDT | Severe Thunderstorm Warning | BIS | Oliver | 31 min |
| May 24, 8:24 AM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 36 min |
| May 27, 12:06 AM CDT | Severe Thunderstorm Warning | BIS | McKenzie | 54 min |
| May 27, 12:55 AM CDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley, McKenzie | 65 min |
| May 27, 1:43 AM CDT | Severe Thunderstorm Warning | BIS | Dunn, McKenzie, McLean, Mountrail | 62 min |
| May 27, 2:44 AM CDT | Severe Thunderstorm Warning | BIS | McLean, Mountrail, Ward | 46 min |
| May 27, 3:28 AM CDT | Severe Thunderstorm Warning | BIS | McHenry, McLean, Mercer, Ward | 62 min |
| May 27, 5:20 AM CDT | Severe Thunderstorm Warning | BIS | Foster, Kidder, Stutsman, Wells | 55 min |
| May 28, 4:29 PM CDT | Severe Thunderstorm Warning | BIS | Hettinger, Stark | 31 min |
| May 28, 6:34 PM CDT | Severe Thunderstorm Warning | BIS | Dunn | 41 min |
| May 28, 7:15 PM CDT | Severe Thunderstorm Warning | BIS | Dunn | 45 min |
| May 28, 8:01 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, McLean, Mercer | 37 min |
| May 30, 10:02 PM CDT | Severe Thunderstorm Warning | BIS | Divide, Williams | 58 min |
| May 31, 3:00 AM CDT | Severe Thunderstorm Warning | BIS | McKenzie | 41 min |
| May 31, 2:41 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, Stark | 64 min |
| May 31, 3:28 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Dunn, Stark | 47 min |
| May 31, 4:12 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, Stark | 48 min |
| May 31, 4:17 PM CDT | Severe Thunderstorm Warning | BIS | Mercer, Oliver | 58 min |
| May 31, 4:40 PM CDT | Severe Thunderstorm Warning | BIS | Hettinger, Slope, Stark | 65 min |
| May 31, 5:29 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, Mercer, Morton, Stark | 46 min |
| May 31, 5:41 PM CDT | Severe Thunderstorm Warning | BIS | Hettinger, Slope, Stark | 64 min |
| May 31, 6:28 PM CDT | Severe Thunderstorm Warning | BIS | Morton, Oliver | 62 min |
| May 31, 6:43 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Hettinger, Morton, Stark | 62 min |
| May 31, 7:00 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Hettinger | 60 min |
| May 31, 7:42 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton | 63 min |
| May 31, 8:32 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Hettinger | 58 min |
| May 31, 8:48 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton | 27 min |
| Jun 1, 6:56 AM CDT | Severe Thunderstorm Warning | BIS | McLean, Mercer | 64 min |
| Jun 1, 3:52 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Morton, Oliver | 25 min |
| Jun 1, 4:07 PM CDT | Severe Thunderstorm Warning | BIS | Billings, McKenzie | 53 min |
| Jun 1, 5:01 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, McKenzie | 59 min |
| Jun 1, 5:22 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton | 38 min |
| Jun 1, 5:25 PM CDT | Severe Thunderstorm Warning | BIS | Williams | 35 min |
| Jun 1, 5:29 PM CDT | Severe Thunderstorm Warning | BIS | Williams | 61 min |
| Jun 1, 5:48 PM CDT | Severe Thunderstorm Warning | BIS | McLean, Mercer, Oliver | 57 min |
| Jun 1, 6:07 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton | 38 min |
| Jun 1, 6:14 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton | 61 min |
| Jun 1, 6:30 PM CDT | Severe Thunderstorm Warning | BIS | McLean, Mercer, Mountrail, Ward | 60 min |
| Jun 1, 6:42 PM CDT | Severe Thunderstorm Warning | BIS | Burke, Mountrail, Ward | 63 min |
| Jun 1, 7:11 PM CDT | Severe Thunderstorm Warning | BIS | McLean, Mercer, Morton, Oliver | 41 min |
| Jun 1, 8:17 PM CDT | Severe Thunderstorm Warning | BIS | Kidder, Logan, Stutsman | 58 min |
| Jun 1, 9:43 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Eddy, Ramsey | 32 min |
| Jun 5, 9:16 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Sioux | 59 min |
| Jun 5, 10:47 PM CDT | Severe Thunderstorm Warning | FGF | Barnes | 58 min |
| Jun 5, 10:53 PM CDT | Severe Thunderstorm Warning | BIS | Stutsman | 37 min |
| Jun 5, 10:59 PM CDT | Severe Thunderstorm Warning | BIS | Dickey, LaMoure, Logan, McIntosh | 48 min |
| Jun 5, 11:10 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Griggs, Steele | 35 min |
| Jun 5, 11:21 PM CDT | Severe Thunderstorm Warning | BIS | Dickey, LaMoure | 37 min |
| Jun 5, 11:22 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Grand Forks, Griggs, Steele, Traill | 38 min |
| Jun 5, 11:40 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Ransom, Richland | 65 min |
| Jun 5, 11:56 PM CDT | Severe Thunderstorm Warning | FGF | Cass, Grand Forks, Steele, Traill | 64 min |
| Jun 6, 12:21 AM CDT | Severe Thunderstorm Warning | FGF | Cass, Richland | 39 min |
| Jun 7, 10:42 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Bowman | 40 min |
| Jun 8, 4:23 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Traill | 52 min |
| Jun 9, 1:04 AM CDT | Severe Thunderstorm Warning | BIS | Billings, Stark | 56 min |
| Jun 9, 6:37 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 23 min |
| Jun 9, 6:59 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 31 min |
| Jun 10, 5:38 PM CDT | Severe Thunderstorm Warning | BIS | Burke | 67 min |
| Jun 10, 6:06 PM CDT | Severe Thunderstorm Warning | BIS | Mountrail | 54 min |
| Jun 10, 6:33 PM CDT | Severe Thunderstorm Warning | BIS | Hettinger, Stark | 57 min |
| Jun 10, 6:38 PM CDT | Severe Thunderstorm Warning | BIS | Burke, Renville, Ward | 37 min |
| Jun 10, 6:43 PM CDT | Severe Thunderstorm Warning | BIS | Hettinger | 62 min |
| Jun 10, 6:52 PM CDT | Severe Thunderstorm Warning | BIS | McLean, Mountrail, Ward | 53 min |
| Jun 10, 7:02 PM CDT | Severe Thunderstorm Warning | BIS | Dunn | 43 min |
| Jun 10, 7:14 PM CDT | Severe Thunderstorm Warning | BIS | Burke, Renville | 31 min |
| Jun 10, 7:17 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Hettinger | 58 min |
| Jun 10, 7:24 PM CDT | Severe Thunderstorm Warning | BIS | Hettinger, Stark | 66 min |
| Jun 10, 7:46 PM CDT | Severe Thunderstorm Warning | BIS | McLean, Mountrail, Ward | 59 min |
| Jun 10, 8:21 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Mercer, Morton, Oliver | 54 min |
| Jun 10, 8:29 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Grant, Hettinger, Sioux | 46 min |
| Jun 10, 8:42 PM CDT | Severe Thunderstorm Warning | BIS | Renville, Ward | 33 min |
| Jun 14, 10:56 AM CDT | Severe Thunderstorm Warning | BIS | Divide, Williams | 49 min |
| Jun 14, 11:44 AM CDT | Severe Thunderstorm Warning | BIS | Burke, Mountrail, Williams | 46 min |
| Jun 14, 12:28 PM CDT | Severe Thunderstorm Warning | BIS | Burke, Mountrail, Ward, Williams | 47 min |
| Jun 14, 3:59 PM CDT | Severe Thunderstorm Warning | BIS | Pierce, Rolette | 61 min |
| Jun 14, 4:17 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Ramsey, Towner | 43 min |
| Jun 14, 4:43 PM CDT | Severe Thunderstorm Warning | BIS | Burke, Divide | 62 min |
| Jun 14, 4:57 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Ramsey, Towner | 63 min |
| Jun 14, 5:42 PM CDT | Severe Thunderstorm Warning | BIS | Burke, Renville | 63 min |
| Jun 14, 5:57 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Towner | 63 min |
| Jun 14, 6:28 PM CDT | Severe Thunderstorm Warning | BIS | Burke, Renville | 47 min |
| Jun 14, 7:01 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau | 59 min |
| Jun 14, 7:12 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Hettinger | 63 min |
| Jun 14, 7:40 PM CDT | Severe Thunderstorm Warning | BIS | Mountrail, Ward | 65 min |
| Jun 14, 7:44 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau | 61 min |
| Jun 14, 8:11 PM CDT | Severe Thunderstorm Warning | BIS | Rolette | 64 min |
| Jun 14, 8:27 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, Mercer | 63 min |
| Jun 14, 8:43 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau, Pierce, Rolette | 62 min |
| Jun 14, 8:54 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Towner | 66 min |
| Jun 14, 9:04 PM CDT | Severe Thunderstorm Warning | BIS | Ward | 56 min |
| Jun 14, 9:23 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, McKenzie, McLean, Mountrail | 67 min |
| Jun 14, 9:24 PM CDT | Severe Thunderstorm Warning | BIS | Emmons | 38 min |
| Jun 14, 9:34 PM CDT | Severe Thunderstorm Warning | BIS | McLean, Mercer | 18 min |
| Jun 14, 9:44 PM CDT | Severe Thunderstorm Warning | BIS | Pierce, Rolette | 33 min |
| Jun 14, 9:51 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Ramsey, Towner | 39 min |
| Jun 14, 9:59 PM CDT | Severe Thunderstorm Warning | BIS | McHenry, Ward | 61 min |
| Jun 14, 10:29 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Ramsey, Towner | 46 min |
| Jun 14, 10:41 PM CDT | Severe Thunderstorm Warning | BIS | Pierce | 37 min |
| Jun 14, 10:42 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Ramsey | 33 min |
| Jun 14, 11:11 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Ramsey | 49 min |
| Jun 14, 11:15 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Pembina, Ramsey, Walsh | 45 min |
| Jun 14, 11:57 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Nelson, Ramsey, Walsh | 48 min |
| Jun 14, 11:59 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Pembina, Ramsey, Walsh | 46 min |
| Jun 15, 12:17 AM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Ransom | 28 min |
| Jun 15, 12:40 AM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Pembina, Ramsey, Walsh | 42 min |
| Jun 15, 1:01 AM CDT | Severe Thunderstorm Warning | FGF | Cass, Ransom, Richland, Sargent | 44 min |
| Jun 15, 1:55 AM CDT | Severe Thunderstorm Warning | FGF | Cass | 34 min |
| Jun 16, 7:19 AM CDT | Severe Thunderstorm Warning | FGF | Ransom, Sargent | 41 min |
| Jun 16, 7:44 AM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Ransom, Richland, Sargent | 46 min |
| Jun 16, 8:23 AM CDT | Severe Thunderstorm Warning | FGF | Cass, Ransom, Richland | 42 min |
| Jun 16, 10:03 AM CDT | Severe Thunderstorm Warning | BIS | Adams, Bowman, Hettinger, Slope | 57 min |
| Jun 16, 10:56 AM CDT | Severe Thunderstorm Warning | BIS | Grant, Hettinger | 52 min |
| Jun 16, 6:06 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Steele, Traill | 26 min |
| Jun 16, 9:02 PM CDT | Severe Thunderstorm Warning | FGF | Richland | 58 min |
| Jun 26, 4:07 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau, Renville | 53 min |
| Jun 26, 4:58 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau, Renville | 62 min |
| Jun 26, 6:24 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, Mercer | 29 min |
| Jun 26, 6:29 PM CDT | Severe Thunderstorm Warning | BIS | Slope | 61 min |
| Jun 26, 6:47 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau, Renville | 58 min |
| Jun 26, 7:11 PM CDT | Severe Thunderstorm Warning | BIS | Ward | 47 min |
| Jun 26, 7:26 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Bowman, Hettinger, Slope, Stark | 64 min |
| Jun 26, 7:29 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau, McHenry | 34 min |
| Jun 26, 7:31 PM CDT | Severe Thunderstorm Warning | BIS | Dunn | 59 min |
| Jun 26, 8:11 PM CDT | Severe Thunderstorm Warning | BIS | Stark | 64 min |
| Jun 26, 8:17 PM CDT | Severe Thunderstorm Warning | BIS | Mercer, Morton, Oliver | 58 min |
| Jun 26, 8:33 PM CDT | Severe Thunderstorm Warning | BIS | Adams | 57 min |
| Jun 26, 8:44 PM CDT | Severe Thunderstorm Warning | BIS | Mercer | 40 min |
| Jun 26, 9:55 PM CDT | Severe Thunderstorm Warning | BIS | Mercer | 54 min |
| Jun 26, 10:17 PM CDT | Severe Thunderstorm Warning | BIS | Slope | 58 min |
| Jun 26, 10:39 PM CDT | Severe Thunderstorm Warning | BIS | McHenry | 54 min |
| Jun 26, 10:48 PM CDT | Severe Thunderstorm Warning | BIS | Bowman | 57 min |
| Jun 26, 10:51 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton, Stark | 54 min |
| Jun 26, 11:09 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Bowman | 66 min |
| Jun 26, 11:23 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Hettinger, Morton | 67 min |
| Jun 26, 11:28 PM CDT | Severe Thunderstorm Warning | BIS | Bowman | 25 min |
| Jun 26, 11:56 PM CDT | Severe Thunderstorm Warning | BIS | Adams | 31 min |
| Jun 28, 2:52 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh | 53 min |
| Jun 28, 5:57 AM CDT | Severe Thunderstorm Warning | BIS | Adams, Bowman, Slope | 63 min |
| Jun 28, 7:02 AM CDT | Severe Thunderstorm Warning | BIS | Adams, Bowman | 58 min |
| Jun 28, 8:00 AM CDT | Severe Thunderstorm Warning | BIS | Adams, Grant, Sioux | 60 min |
| Jun 28, 8:56 AM CDT | Severe Thunderstorm Warning | BIS | Grant, Sioux | 64 min |
| Jun 28, 9:58 AM CDT | Severe Thunderstorm Warning | BIS | Emmons, Sioux | 47 min |
| Jun 28, 10:37 AM CDT | Severe Thunderstorm Warning | BIS | Grant, Hettinger | 53 min |
| Jun 28, 1:41 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Traill | 34 min |
| Jun 28, 2:13 PM CDT | Severe Thunderstorm Warning | FGF | Traill | 47 min |
| Jun 28, 3:05 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Nelson | 40 min |
| Jun 28, 3:40 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Walsh | 50 min |
| Jun 28, 4:17 PM CDT | Severe Thunderstorm Warning | BIS | McKenzie | 43 min |
| Jun 28, 5:04 PM CDT | Severe Thunderstorm Warning | BIS | McKenzie, Williams | 23 min |
| Jun 28, 6:32 PM CDT | Severe Thunderstorm Warning | BIS | Dunn | 58 min |
| Jun 28, 7:09 PM CDT | Severe Thunderstorm Warning | BIS | McHenry, Pierce, Sheridan, Wells | 66 min |
| Jun 28, 7:30 PM CDT | Severe Thunderstorm Warning | BIS | Dunn | 60 min |
| Jun 28, 8:17 PM CDT | Severe Thunderstorm Warning | FGF | Benson | 28 min |
| Jun 28, 8:24 PM CDT | Severe Thunderstorm Warning | BIS | Pierce, Sheridan, Wells | 51 min |
| Jun 28, 8:47 PM CDT | Severe Thunderstorm Warning | BIS | McKenzie, Williams | 58 min |
| Jun 28, 9:11 PM CDT | Severe Thunderstorm Warning | BIS | Wells | 28 min |
| Jun 28, 9:16 PM CDT | Severe Thunderstorm Warning | BIS | Dunn | 59 min |
| Jun 28, 9:46 PM CDT | Severe Thunderstorm Warning | BIS | Burke, Dunn, McKenzie, Mountrail, Williams | 59 min |
| Jun 28, 10:07 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, McLean, Mercer | 53 min |
| Jun 28, 10:36 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley, Slope | 54 min |
| Jun 28, 10:41 PM CDT | Severe Thunderstorm Warning | BIS | Burke, McKenzie, Mountrail, Ward, Williams | 64 min |
| Jun 28, 10:46 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Dunn, McKenzie, McLean, Mercer, Mountrail | 59 min |
| Jun 28, 11:19 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau, McHenry, Renville, Ward | 56 min |
| Jun 28, 11:26 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Bowman, Hettinger, Slope | 64 min |
| Jun 28, 11:30 PM CDT | Severe Thunderstorm Warning | BIS | Stark | 60 min |
| Jun 28, 11:38 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, McLean, Mercer, Oliver | 67 min |
| Jun 29, 12:02 AM CDT | Severe Thunderstorm Warning | BIS | Morton | 58 min |
| Jun 29, 12:10 AM CDT | Severe Thunderstorm Warning | BIS | Bottineau, McHenry, Pierce, Rolette | 65 min |
| Jun 29, 12:17 AM CDT | Severe Thunderstorm Warning | BIS | Adams, Grant, Hettinger, Morton, Sioux, Stark | 58 min |
| Jun 29, 12:39 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh, McLean, Mercer, Oliver, Sheridan | 66 min |
| Jun 29, 12:43 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Morton | 62 min |
| Jun 29, 1:11 AM CDT | Severe Thunderstorm Warning | BIS | Bottineau, McHenry, Pierce, Rolette | 64 min |
| Jun 29, 1:14 AM CDT | Severe Thunderstorm Warning | BIS | Emmons, Grant, Morton, Sioux | 61 min |
| Jun 29, 1:25 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Foster, Kidder, Sheridan, Stutsman, Wells | 65 min |
| Jun 29, 1:45 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Kidder | 30 min |
| Jun 29, 1:48 AM CDT | Severe Thunderstorm Warning | FGF | Benson, Ramsey, Towner | 57 min |
| Jun 29, 2:08 AM CDT | Severe Thunderstorm Warning | FGF | Benson, Eddy, Ramsey | 67 min |
| Jun 29, 2:12 AM CDT | Severe Thunderstorm Warning | BIS | Dickey, Emmons, Kidder, LaMoure, Logan, McIntosh and 1 more | 63 min |
| Jun 29, 2:13 AM CDT | Severe Thunderstorm Warning | BIS | Pierce, Rolette | 39 min |
| Jun 29, 2:23 AM CDT | Severe Thunderstorm Warning | BIS | Foster, Kidder, Stutsman, Wells | 37 min |
| Jun 29, 2:44 AM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Towner | 46 min |
| Jun 29, 2:45 AM CDT | Severe Thunderstorm Warning | FGF | Benson, Ramsey, Towner | 45 min |
| Jun 29, 2:57 AM CDT | Severe Thunderstorm Warning | BIS | Foster, Stutsman | 18 min |
| Jun 29, 2:59 AM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Grand Forks, Griggs, Steele, Traill | 61 min |
| Jun 29, 3:15 AM CDT | Severe Thunderstorm Warning | FGF | Benson, Eddy, Grand Forks, Griggs, Nelson, Ramsey and 2 more | 60 min |
| Jun 29, 3:16 AM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Ransom, Sargent | 59 min |
| Jun 29, 3:17 AM CDT | Severe Thunderstorm Warning | BIS | Dickey, LaMoure | 58 min |
| Jun 29, 3:30 AM CDT | Severe Thunderstorm Warning | FGF | Benson, Cavalier, Ramsey, Towner, Walsh | 45 min |
| Jun 29, 3:51 AM CDT | Severe Thunderstorm Warning | FGF | Cass, Grand Forks, Steele, Traill | 54 min |
| Jun 29, 3:58 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Nelson, Walsh | 47 min |
| Jun 29, 4:06 AM CDT | Severe Thunderstorm Warning | FGF | Cass, Ransom, Richland, Sargent | 54 min |
| Jun 29, 4:25 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Traill, Walsh | 65 min |
| Jun 29, 4:57 AM CDT | Severe Thunderstorm Warning | FGF | Richland | 63 min |
| Jul 1, 7:35 PM CDT | Severe Thunderstorm Warning | FGF | Eddy | 40 min |
| Jul 2, 7:08 PM CDT | Severe Thunderstorm Warning | BIS | Hettinger, Stark | 67 min |
| Jul 2, 8:06 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Hettinger | 54 min |
| Jul 2, 8:51 PM CDT | Severe Thunderstorm Warning | FGF | Ransom, Richland, Sargent | 54 min |
| Jul 2, 8:53 PM CDT | Severe Thunderstorm Warning | BIS | Grant | 67 min |
| Jul 2, 9:27 PM CDT | Severe Thunderstorm Warning | FGF | Cass, Ransom, Richland, Sargent | 48 min |
| Jul 2, 9:59 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 46 min |
| Jul 2, 10:45 PM CDT | Severe Thunderstorm Warning | FGF | Cass, Traill | 60 min |
| Jul 3, 1:10 AM CDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley | 65 min |
| Jul 3, 1:12 AM CDT | Severe Thunderstorm Warning | BIS | Golden Valley, Slope | 63 min |
| Jul 3, 1:37 AM CDT | Severe Thunderstorm Warning | BIS | Bowman, Slope | 53 min |
| Jul 3, 2:18 AM CDT | Severe Thunderstorm Warning | BIS | Adams, Billings, Bowman, Hettinger, Slope, Stark | 57 min |
| Jul 3, 3:15 AM CDT | Severe Thunderstorm Warning | BIS | Adams, Grant, Hettinger, Morton, Sioux, Stark | 60 min |
| Jul 3, 3:51 AM CDT | Severe Thunderstorm Warning | BIS | Emmons, McIntosh | 54 min |
| Jul 3, 4:12 AM CDT | Severe Thunderstorm Warning | BIS | Adams, Burleigh, Grant, Morton, Sioux | 63 min |
| Jul 3, 5:03 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Emmons, Grant, Morton, Sioux | 57 min |
| Jul 3, 5:30 AM CDT | Severe Thunderstorm Warning | BIS | Emmons, Kidder, Logan, McIntosh, Stutsman | 60 min |
| Jul 3, 6:13 AM CDT | Severe Thunderstorm Warning | BIS | Dickey, LaMoure, Logan, McIntosh, Stutsman | 62 min |
| Jul 3, 9:48 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Bowman, Slope | 57 min |
| Jul 3, 10:21 PM CDT | Severe Thunderstorm Warning | BIS | Hettinger, Slope, Stark | 54 min |
| Jul 3, 10:24 PM CDT | Severe Thunderstorm Warning | BIS | McKenzie | 66 min |
| Jul 3, 10:55 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton, Sioux | 65 min |
| Jul 3, 11:30 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, McKenzie | 48 min |
| Jul 3, 11:35 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Morton | 55 min |
| Jul 3, 11:43 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, McLean, Oliver | 62 min |
| Jul 3, 11:49 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Sioux | 56 min |
| Jul 4, 12:16 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Kidder, Sheridan, Wells | 59 min |
| Jul 4, 12:46 AM CDT | Severe Thunderstorm Warning | BIS | Emmons, Logan | 44 min |
| Jul 4, 1:14 AM CDT | Severe Thunderstorm Warning | BIS | Foster, Kidder, Stutsman, Wells | 61 min |
| Jul 4, 1:24 AM CDT | Severe Thunderstorm Warning | BIS | McIntosh | 44 min |
| Jul 4, 2:00 AM CDT | Severe Thunderstorm Warning | FGF | Benson, Eddy, Griggs, Nelson, Ramsey | 45 min |
| Jul 4, 2:33 AM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Eddy, Grand Forks, Griggs, Nelson and 2 more | 57 min |
| Jul 4, 2:37 AM CDT | Severe Thunderstorm Warning | FGF | Benson, Cavalier, Grand Forks, Nelson, Ramsey, Towner and 1 more | 53 min |
| Jul 4, 3:09 AM CDT | Severe Thunderstorm Warning | FGF | Cass, Ransom, Richland, Sargent | 66 min |
| Jul 4, 3:20 AM CDT | Severe Thunderstorm Warning | BIS | Dickey, LaMoure | 33 min |
| Jul 4, 3:24 AM CDT | Severe Thunderstorm Warning | FGF | Cass, Grand Forks, Steele, Traill | 66 min |
| Jul 4, 3:27 AM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Grand Forks, Pembina, Ramsey, Walsh | 63 min |
| Jul 4, 4:16 AM CDT | Severe Thunderstorm Warning | FGF | Pembina | 59 min |
| Jul 7, 11:28 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Hettinger | 62 min |
| Jul 8, 12:08 AM CDT | Severe Thunderstorm Warning | BIS | Adams, Grant, Hettinger, Sioux | 67 min |
| Jul 8, 1:17 AM CDT | Severe Thunderstorm Warning | BIS | McLean, Mercer, Oliver | 38 min |
| Jul 8, 1:31 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Emmons, Kidder, Morton | 59 min |
| Jul 8, 2:28 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Kidder, Stutsman, Wells | 62 min |
| Jul 8, 3:11 AM CDT | Severe Thunderstorm Warning | BIS | Foster, Pierce, Wells | 54 min |
| Jul 8, 3:18 AM CDT | Severe Thunderstorm Warning | FGF | Benson, Eddy, Grand Forks, Griggs, Nelson, Ramsey and 1 more | 57 min |
| Jul 8, 4:13 AM CDT | Severe Thunderstorm Warning | FGF | Benson, Eddy, Grand Forks, Griggs, Nelson, Ramsey and 2 more | 62 min |
| Jul 8, 4:52 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Steele | 53 min |
| Jul 8, 5:55 PM CDT | Severe Thunderstorm Warning | BIS | Dickey, LaMoure | 65 min |
| Jul 8, 6:27 PM CDT | Severe Thunderstorm Warning | FGF | Ransom, Richland, Sargent | 52 min |
| Jul 8, 7:10 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Ransom, Richland | 16 min |
| Jul 8, 7:37 PM CDT | Severe Thunderstorm Warning | FGF | Cass, Richland | 23 min |
| Jul 9, 8:38 PM CDT | Severe Thunderstorm Warning | BIS | Divide, Williams | 67 min |
| Jul 9, 9:42 PM CDT | Severe Thunderstorm Warning | BIS | McKenzie, Williams | 63 min |
| Jul 9, 10:04 PM CDT | Severe Thunderstorm Warning | BIS | Williams | 56 min |
| Jul 9, 10:41 PM CDT | Severe Thunderstorm Warning | BIS | McKenzie, Williams | 64 min |
| Jul 9, 11:42 PM CDT | Severe Thunderstorm Warning | BIS | McKenzie, Williams | 63 min |
| Jul 10, 12:43 AM CDT | Severe Thunderstorm Warning | BIS | Dunn, McKenzie, Mountrail | 62 min |
| Jul 10, 1:37 AM CDT | Severe Thunderstorm Warning | BIS | Dunn, McKenzie, McLean, Mountrail | 53 min |
| Jul 10, 2:18 AM CDT | Severe Thunderstorm Warning | BIS | Dunn, McLean, Mercer | 57 min |
| Jul 10, 2:46 AM CDT | Severe Thunderstorm Warning | BIS | McLean, Mercer, Oliver | 59 min |
| Jul 10, 9:19 PM CDT | Severe Thunderstorm Warning | BIS | Divide, Williams | 56 min |
| Jul 10, 10:09 PM CDT | Severe Thunderstorm Warning | BIS | Burke, Divide, Mountrail, Renville, Ward, Williams | 66 min |
| Jul 10, 11:07 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau, Burke, McHenry, Mountrail, Renville, Ward | 53 min |
| Jul 14, 3:51 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, Mercer | 54 min |
| Jul 14, 4:43 PM CDT | Severe Thunderstorm Warning | BIS | McLean, Mercer | 18 min |
| Jul 14, 4:59 PM CDT | Severe Thunderstorm Warning | BIS | Mercer | 50 min |
| Jul 14, 5:08 PM CDT | Severe Thunderstorm Warning | BIS | Morton, Stark | 37 min |
| Jul 14, 5:47 PM CDT | Severe Thunderstorm Warning | BIS | Pierce | 43 min |
| Jul 14, 6:22 PM CDT | Severe Thunderstorm Warning | BIS | McHenry, Pierce, Sheridan, Wells | 53 min |
| Jul 14, 6:28 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Grant, Hettinger | 62 min |
| Jul 14, 7:33 PM CDT | Severe Thunderstorm Warning | FGF | Towner | 42 min |
| Jul 14, 7:36 PM CDT | Severe Thunderstorm Warning | BIS | McHenry, Pierce | 54 min |
| Jul 14, 7:45 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton, Sioux | 60 min |
| Jul 14, 7:49 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Towner | 41 min |
| Jul 18, 2:21 PM CDT | Severe Thunderstorm Warning | BIS | McKenzie, Williams | 54 min |
| Jul 18, 2:44 PM CDT | Severe Thunderstorm Warning | BIS | Mountrail, Williams | 31 min |
| Jul 18, 3:55 PM CDT | Severe Thunderstorm Warning | BIS | Burke, Divide | 65 min |
| Jul 18, 4:56 PM CDT | Severe Thunderstorm Warning | BIS | Burke | 31 min |
| Jul 19, 4:23 PM CDT | Severe Thunderstorm Warning | BIS | Kidder, Logan | 67 min |
| Jul 19, 5:18 PM CDT | Severe Thunderstorm Warning | BIS | Logan, McIntosh | 28 min |
| Jul 19, 5:57 PM CDT | Severe Thunderstorm Warning | FGF | Eddy | 24 min |
| Jul 19, 6:35 PM CDT | Severe Thunderstorm Warning | BIS | Morton, Oliver | 45 min |
| Jul 19, 6:56 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Sioux | 64 min |
| Jul 19, 7:09 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Sioux | 66 min |
| Jul 19, 8:53 PM CDT | Severe Thunderstorm Warning | BIS | Sheridan | 67 min |
| Jul 21, 3:37 PM CDT | Severe Thunderstorm Warning | BIS | Williams | 27 min |
| Jul 21, 4:55 PM CDT | Severe Thunderstorm Warning | BIS | McKenzie, Williams | 65 min |
| Jul 21, 5:56 PM CDT | Severe Thunderstorm Warning | BIS | McKenzie, Williams | 64 min |
| Jul 21, 6:56 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, McKenzie, Williams | 64 min |
| Jul 21, 7:12 PM CDT | Severe Thunderstorm Warning | BIS | Golden Valley, Slope | 48 min |
| Jul 21, 7:34 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley, Slope, Stark | 36 min |
| Jul 21, 7:56 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Dunn | 64 min |
| Jul 21, 8:14 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley | 31 min |
| Jul 22, 12:03 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau, Renville | 42 min |
| Jul 25, 12:16 AM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton | 33 min |
| Jul 25, 1:34 AM CDT | Severe Thunderstorm Warning | BIS | Kidder, Stutsman | 26 min |
| Jul 25, 1:58 AM CDT | Severe Thunderstorm Warning | BIS | Stutsman | 32 min |
| Jul 29, 4:34 PM CDT | Severe Thunderstorm Warning | BIS | Sheridan | 19 min |
| Aug 3, 10:02 PM CDT | Severe Thunderstorm Warning | BIS | Bowman, Slope | 58 min |
| Aug 3, 10:07 PM CDT | Severe Thunderstorm Warning | BIS | Adams | 53 min |
| Aug 3, 10:11 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton | 34 min |
| Aug 3, 10:46 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton | 59 min |
| Aug 3, 11:20 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Grant, Hettinger | 55 min |
| Aug 3, 11:47 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton | 58 min |
| Aug 4, 5:17 PM CDT | Severe Thunderstorm Warning | BIS | Kidder, Wells | 58 min |
| Aug 4, 7:21 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Eddy, Griggs, Nelson | 54 min |
| Aug 4, 8:08 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Griggs, Nelson, Steele | 40 min |
| Aug 19, 2:43 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 21 min |
| Aug 19, 4:19 AM CDT | Severe Thunderstorm Warning | FGF | Steele | 26 min |
| Aug 23, 6:37 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Sioux | 53 min |
| Aug 23, 7:36 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Sioux | 38 min |
| Aug 23, 8:13 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton | 62 min |
| Aug 25, 9:36 PM CDT | Severe Thunderstorm Warning | BIS | Stutsman | 33 min |
| Aug 25, 9:50 PM CDT | Severe Thunderstorm Warning | BIS | Kidder, Stutsman | 55 min |
| Aug 25, 9:54 PM CDT | Severe Thunderstorm Warning | FGF | Barnes | 23 min |
| Aug 25, 10:19 PM CDT | Severe Thunderstorm Warning | FGF | Griggs, Steele | 26 min |
| Aug 25, 10:42 PM CDT | Severe Thunderstorm Warning | BIS | Stutsman | 63 min |
| Aug 25, 10:57 PM CDT | Severe Thunderstorm Warning | BIS | Kidder, Stutsman | 63 min |
| Aug 26, 2:05 AM CDT | Severe Thunderstorm Warning | FGF | Cass, Richland | 25 min |
| Aug 26, 2:30 AM CDT | Severe Thunderstorm Warning | FGF | Cass, Richland | 30 min |
| Aug 26, 3:12 PM CDT | Severe Thunderstorm Warning | FGF | Cass, Richland | 33 min |
| Aug 26, 4:56 PM CDT | Severe Thunderstorm Warning | BIS | McLean, Mountrail, Ward | 49 min |
| Aug 26, 8:16 PM CDT | Severe Thunderstorm Warning | BIS | Emmons, Logan | 59 min |
| Aug 26, 8:46 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Cavalier, Eddy, Ramsey, Towner | 29 min |
| Aug 26, 8:55 PM CDT | Severe Thunderstorm Warning | BIS | LaMoure, Logan, Stutsman | 65 min |
| Aug 26, 9:14 PM CDT | Severe Thunderstorm Warning | FGF | Barnes | 31 min |
| Aug 26, 9:15 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Cavalier, Eddy, Grand Forks, Nelson, Pembina and 2 more | 45 min |
| Aug 26, 9:44 PM CDT | Severe Thunderstorm Warning | BIS | LaMoure, Stutsman | 42 min |
| Aug 26, 9:58 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Grand Forks, Nelson, Pembina, Walsh | 62 min |
| Aug 26, 10:46 PM CDT | Severe Thunderstorm Warning | FGF | Traill | 44 min |
| Aug 27, 7:54 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Ransom | 51 min |
| Aug 27, 8:30 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 30 min |
| Aug 27, 8:56 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 64 min |
| Aug 31, 3:58 PM CDT | Severe Thunderstorm Warning | FGF | Richland | 47 min |
| Aug 31, 4:43 PM CDT | Severe Thunderstorm Warning | FGF | Richland | 44 min |
| Aug 31, 9:16 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 44 min |
| Sep 3, 6:55 PM CDT | Severe Thunderstorm Warning | BIS | Billings | 50 min |
| Sep 3, 7:10 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Dunn, Stark | 65 min |
| Sep 3, 7:16 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Dunn | 59 min |
| Sep 3, 7:29 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Slope, Stark | 61 min |
| Sep 3, 7:30 PM CDT | Severe Thunderstorm Warning | BIS | Bowman, Slope | 28 min |
| Sep 3, 7:47 PM CDT | Severe Thunderstorm Warning | BIS | Bowman | 58 min |
| Sep 3, 7:58 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Dunn, Stark | 62 min |
| Sep 3, 8:09 PM CDT | Severe Thunderstorm Warning | BIS | Mountrail, Ward | 66 min |
| Sep 3, 8:40 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Stark | 50 min |
| Sep 3, 9:17 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau, Renville | 43 min |
| Sep 3, 9:22 PM CDT | Severe Thunderstorm Warning | BIS | Burke, Renville, Ward | 38 min |
| Sep 3, 9:23 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, Stark | 52 min |
| Sep 6, 2:55 PM CDT | Severe Thunderstorm Warning | BIS | Pierce, Rolette | 65 min |
| Sep 6, 2:57 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Ramsey, Towner | 63 min |
| Sep 6, 6:29 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, Mercer, Morton, Stark | 61 min |
| Sep 6, 7:24 PM CDT | Severe Thunderstorm Warning | BIS | Morton, Stark | 66 min |
| Sep 6, 8:30 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton | 43 min |
| Sep 9, 2:53 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh | 54 min |
| Sep 9, 6:35 PM CDT | Severe Thunderstorm Warning | BIS | Dickey, LaMoure, Logan, McIntosh | 55 min |
| Sep 9, 6:43 PM CDT | Severe Thunderstorm Warning | BIS | Stutsman | 42 min |
| Sep 11, 5:32 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Walsh | 58 min |
| Sep 11, 6:26 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 23 min |
| Sep 12, 11:09 PM CDT | Severe Thunderstorm Warning | BIS | McLean, Mercer | 30 min |
| Sep 12, 11:15 PM CDT | Severe Thunderstorm Warning | BIS | McLean, Mercer, Oliver | 60 min |
| Sep 14, 5:47 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Emmons, Kidder, Logan | 58 min |
| Sep 14, 6:34 PM CDT | Severe Thunderstorm Warning | BIS | Kidder, Stutsman | 56 min |
| Sep 14, 7:16 PM CDT | Severe Thunderstorm Warning | BIS | Stutsman | 45 min |
| Sep 14, 8:28 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass | 47 min |
| Sep 14, 9:14 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass | 46 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Grant County43
- Morton County37
- Dunn County33
- Cass County32
- Hettinger County30
- Stark County29
- Mercer County28
- Adams County26
- McLean County25
- McKenzie County24
- Ramsey County24
- Grand Forks County24
- Stutsman County23
- Williams County23
- Sioux County21
- Mountrail County21
- Ward County20
- Slope County19
- Richland County19
- Cavalier County18
- Kidder County18
- Benson County18
- Billings County17
- Oliver County16
- Burke County16
- Barnes County16
- Burleigh County15
- Steele County15
- Bowman County15
- Towner County15
- Walsh County15
- Traill County14
- Ransom County14
- Renville County14
- Pierce County14
- Logan County13
- Bottineau County13
- Nelson County13
- McHenry County12
- Emmons County12
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.