Alert archive / Montana / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Montana, 1997
378 severe thunderstorm warnings in 1997. 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 1997. Tap one for its archive.
- Severe Thunderstorm Warnings
- 378
- Busiest month
- June136 severe thunderstorm warnings
- Busiest day
- June 6, 199724 severe thunderstorm warnings
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 4:02 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Carbon, Stillwater | 48 min |
| Apr 20, 4:17 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 48 min |
| Apr 20, 5:05 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Yellowstone | 45 min |
| May 6, 5:04 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 61 min |
| May 6, 5:59 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 61 min |
| May 6, 7:05 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 45 min |
| May 16, 4:49 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon | 61 min |
| May 21, 4:41 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley | 44 min |
| May 22, 9:11 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater | 34 min |
| May 22, 9:15 PM MDT | Severe Thunderstorm Warning | BYZ | Wheatland | 45 min |
| May 31, 4:25 PM MDT | Severe Thunderstorm Warning | MSO | Beaverhead | 45 min |
| May 31, 4:30 PM MDT | Severe Thunderstorm Warning | MSO | Beaverhead | 45 min |
| May 31, 4:34 PM MDT | Severe Thunderstorm Warning | MSO | Lincoln, Sanders | 41 min |
| May 31, 4:45 PM MDT | Severe Thunderstorm Warning | TFX | Jefferson, Madison | 60 min |
| May 31, 4:49 PM MDT | Severe Thunderstorm Warning | MSO | Mineral | 41 min |
| May 31, 5:55 PM MDT | Severe Thunderstorm Warning | MSO | Lake, Missoula | 65 min |
| May 31, 8:18 PM MDT | Severe Thunderstorm Warning | TFX | Glacier, Toole | 42 min |
| May 31, 8:41 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton | 34 min |
| May 31, 9:02 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Liberty | 43 min |
| May 31, 9:15 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 65 min |
| May 31, 10:50 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Powder River | 55 min |
| Jun 2, 3:23 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Powder River | 47 min |
| Jun 2, 3:36 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Powder River | 34 min |
| Jun 4, 5:14 PM MDT | Severe Thunderstorm Warning | TFX | Teton | 61 min |
| Jun 4, 5:21 PM MDT | Severe Thunderstorm Warning | MSO | Powell | 54 min |
| Jun 4, 5:33 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 57 min |
| Jun 4, 5:38 PM MDT | Severe Thunderstorm Warning | MSO | Powell | 37 min |
| Jun 4, 6:07 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 68 min |
| Jun 4, 6:11 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton | 64 min |
| Jun 4, 7:14 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton, Toole | 61 min |
| Jun 4, 7:53 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 37 min |
| Jun 4, 8:01 PM MDT | Severe Thunderstorm Warning | TFX | Toole | 44 min |
| Jun 4, 8:36 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 54 min |
| Jun 5, 12:15 AM MDT | Severe Thunderstorm Warning | TFX | Judith Basin | 45 min |
| Jun 5, 3:49 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Meagher | 56 min |
| Jun 5, 5:29 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass, Wheatland | 2 hr |
| Jun 5, 6:34 PM MDT | Severe Thunderstorm Warning | TFX | Broadwater | 41 min |
| Jun 5, 7:20 PM MDT | Severe Thunderstorm Warning | BYZ | Wheatland | 65 min |
| Jun 5, 7:26 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass | 64 min |
| Jun 5, 8:18 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Musselshell | 62 min |
| Jun 5, 8:28 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass | 62 min |
| Jun 5, 9:23 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 62 min |
| Jun 5, 9:34 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass | 61 min |
| Jun 5, 10:32 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 33 min |
| Jun 5, 11:10 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Musselshell | 65 min |
| Jun 6, 1:26 AM MDT | Severe Thunderstorm Warning | GGW | Garfield | 64 min |
| Jun 6, 11:20 AM MDT | Severe Thunderstorm Warning | GGW | Garfield | 40 min |
| Jun 6, 1:55 PM MDT | Severe Thunderstorm Warning | MSO | Deer Lodge, Silver Bow | 65 min |
| Jun 6, 1:58 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 47 min |
| Jun 6, 2:55 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 50 min |
| Jun 6, 3:45 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 45 min |
| Jun 6, 4:03 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 57 min |
| Jun 6, 4:19 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Judith Basin | 56 min |
| Jun 6, 4:38 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 67 min |
| Jun 6, 4:51 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 54 min |
| Jun 6, 5:08 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon | 62 min |
| Jun 6, 5:15 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Chouteau, Fergus | 60 min |
| Jun 6, 5:31 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Judith Basin, Meagher | 59 min |
| Jun 6, 5:42 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 63 min |
| Jun 6, 5:52 PM MDT | Severe Thunderstorm Warning | TFX | Yellowstone | 68 min |
| Jun 6, 6:21 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Chouteau | 69 min |
| Jun 6, 6:43 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Chouteau, Fergus, Judith Basin | 62 min |
| Jun 6, 6:46 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 59 min |
| Jun 6, 7:17 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 48 min |
| Jun 6, 7:33 PM MDT | Severe Thunderstorm Warning | BYZ | Treasure, Yellowstone | 47 min |
| Jun 6, 7:42 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 63 min |
| Jun 6, 7:46 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Fergus | 59 min |
| Jun 6, 9:51 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 54 min |
| Jun 6, 10:32 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 58 min |
| Jun 7, 6:39 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 61 min |
| Jun 7, 6:56 PM MDT | Severe Thunderstorm Warning | TFX | Fergus, Judith Basin | 64 min |
| Jun 7, 7:27 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 63 min |
| Jun 7, 8:06 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 59 min |
| Jun 8, 5:12 PM MDT | Severe Thunderstorm Warning | GGW | Dawson | 48 min |
| Jun 8, 5:24 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 61 min |
| Jun 8, 5:40 PM MDT | Severe Thunderstorm Warning | GGW | Dawson | 65 min |
| Jun 8, 6:43 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone | 62 min |
| Jun 8, 7:12 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 63 min |
| Jun 9, 8:15 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Prairie | 45 min |
| Jun 11, 2:21 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 39 min |
| Jun 12, 12:08 PM MDT | Severe Thunderstorm Warning | TFX | Hill | 67 min |
| Jun 17, 10:28 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Stillwater | 62 min |
| Jun 17, 10:53 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 47 min |
| Jun 17, 11:33 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 62 min |
| Jun 18, 3:23 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 62 min |
| Jun 18, 3:25 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 65 min |
| Jun 18, 4:03 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 62 min |
| Jun 18, 4:40 PM MDT | Severe Thunderstorm Warning | GGW | Prairie | 65 min |
| Jun 18, 4:59 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 61 min |
| Jun 18, 5:02 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 63 min |
| Jun 18, 5:39 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon | 61 min |
| Jun 18, 5:40 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 65 min |
| Jun 18, 5:43 PM MDT | Severe Thunderstorm Warning | GGW | Prairie | 62 min |
| Jun 18, 6:01 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud | 59 min |
| Jun 18, 6:16 PM MDT | Severe Thunderstorm Warning | BYZ | Fallon | 64 min |
| Jun 18, 7:05 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Powder River, Rosebud | 60 min |
| Jun 18, 7:21 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 59 min |
| Jun 18, 8:51 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 64 min |
| Jun 18, 9:34 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 61 min |
| Jun 18, 10:32 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud | 63 min |
| Jun 19, 4:32 AM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 63 min |
| Jun 20, 3:01 AM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 64 min |
| Jun 22, 3:45 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 60 min |
| Jun 22, 4:15 PM MDT | Severe Thunderstorm Warning | GGW | Dawson | 60 min |
| Jun 22, 4:45 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 60 min |
| Jun 22, 5:30 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt, Sheridan | 60 min |
| Jun 22, 5:45 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 60 min |
| Jun 22, 6:05 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 70 min |
| Jun 22, 6:25 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 50 min |
| Jun 22, 6:45 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Richland | 60 min |
| Jun 22, 7:00 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud, Treasure | 60 min |
| Jun 22, 7:34 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Fallon | 61 min |
| Jun 22, 7:45 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Richland | 60 min |
| Jun 22, 8:45 PM MDT | Severe Thunderstorm Warning | GGW | Richland, Wibaux | 45 min |
| Jun 26, 9:30 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 60 min |
| Jun 27, 11:17 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Custer, Powder River | 63 min |
| Jun 28, 4:11 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 64 min |
| Jun 28, 5:06 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 59 min |
| Jun 28, 5:14 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon | 61 min |
| Jun 28, 5:15 PM MDT | Severe Thunderstorm Warning | TFX | Fergus, Judith Basin | 60 min |
| Jun 28, 6:30 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 60 min |
| Jun 28, 7:04 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 61 min |
| Jun 28, 7:19 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Wheatland | 61 min |
| Jun 28, 7:30 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 45 min |
| Jun 28, 8:20 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 55 min |
| Jun 28, 8:30 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Custer, Fallon | 65 min |
| Jun 28, 8:36 PM MDT | Severe Thunderstorm Warning | TFX | Teton | 54 min |
| Jun 28, 9:38 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud, Treasure | 62 min |
| Jun 29, 2:53 PM MDT | Severe Thunderstorm Warning | TFX | Gallatin | 67 min |
| Jun 29, 2:57 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt | 63 min |
| Jun 29, 3:30 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Meagher | 60 min |
| Jun 29, 4:37 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt | 68 min |
| Jun 29, 5:07 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud, Treasure | 63 min |
| Jun 29, 5:18 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 57 min |
| Jun 29, 5:30 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass | 65 min |
| Jun 29, 5:42 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Wheatland | 63 min |
| Jun 29, 6:16 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 64 min |
| Jun 29, 6:25 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 65 min |
| Jun 29, 6:39 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 61 min |
| Jun 29, 6:45 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 60 min |
| Jun 29, 6:47 PM MDT | Severe Thunderstorm Warning | BYZ | Treasure | 63 min |
| Jun 29, 6:51 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater, Yellowstone | 64 min |
| Jun 29, 7:18 PM MDT | Severe Thunderstorm Warning | GGW | Phillips, Valley | 57 min |
| Jun 29, 7:19 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 61 min |
| Jun 29, 7:40 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Powder River | 60 min |
| Jun 29, 8:11 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Powder River | 59 min |
| Jun 29, 8:14 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 61 min |
| Jun 29, 9:08 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Custer, Fallon | 62 min |
| Jun 29, 11:00 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 60 min |
| Jun 29, 11:24 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 61 min |
| Jun 29, 11:55 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 60 min |
| Jun 30, 12:56 AM MDT | Severe Thunderstorm Warning | BYZ | Carter | 44 min |
| Jun 30, 11:21 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Powder River | 64 min |
| Jul 1, 12:08 AM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 62 min |
| Jul 1, 12:17 AM MDT | Severe Thunderstorm Warning | BYZ | Custer, Powder River | 63 min |
| Jul 1, 1:22 AM MDT | Severe Thunderstorm Warning | BYZ | Custer | 63 min |
| Jul 1, 11:25 AM MDT | Severe Thunderstorm Warning | BYZ | Carter | 55 min |
| Jul 5, 7:00 PM MDT | Severe Thunderstorm Warning | MSO | Beaverhead | 35 min |
| Jul 6, 1:46 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 59 min |
| Jul 6, 2:27 PM MDT | Severe Thunderstorm Warning | GGW | Petroleum | 48 min |
| Jul 6, 5:30 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 45 min |
| Jul 6, 6:14 PM MDT | Severe Thunderstorm Warning | TFX | Blaine | 46 min |
| Jul 6, 7:04 PM MDT | Severe Thunderstorm Warning | TFX | Blaine | 26 min |
| Jul 6, 7:22 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 68 min |
| Jul 6, 7:43 PM MDT | Severe Thunderstorm Warning | GGW | Dawson | 62 min |
| Jul 6, 8:57 PM MDT | Severe Thunderstorm Warning | GGW | Prairie | 33 min |
| Jul 6, 9:06 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 69 min |
| Jul 6, 9:10 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Fallon | 60 min |
| Jul 6, 9:20 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 55 min |
| Jul 10, 5:04 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Yellowstone | 61 min |
| Jul 10, 5:36 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon, Stillwater | 49 min |
| Jul 10, 8:16 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Yellowstone | 64 min |
| Jul 10, 9:20 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 65 min |
| Jul 10, 9:26 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Treasure | 64 min |
| Jul 10, 10:28 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 62 min |
| Jul 10, 11:33 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 62 min |
| Jul 11, 12:41 AM MDT | Severe Thunderstorm Warning | GGW | Dawson | 34 min |
| Jul 11, 1:08 AM MDT | Severe Thunderstorm Warning | GGW | Wibaux | 22 min |
| Jul 12, 3:43 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 62 min |
| Jul 12, 3:55 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 65 min |
| Jul 12, 4:14 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 61 min |
| Jul 15, 9:36 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 54 min |
| Jul 16, 11:00 PM MDT | Severe Thunderstorm Warning | MSO | Powell | 30 min |
| Jul 17, 4:35 PM MDT | Severe Thunderstorm Warning | BYZ | Park, Sweet Grass | 60 min |
| Jul 17, 5:19 PM MDT | Severe Thunderstorm Warning | GGW | Petroleum | 56 min |
| Jul 17, 6:12 PM MDT | Severe Thunderstorm Warning | MSO | Ravalli | 48 min |
| Jul 17, 6:20 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 55 min |
| Jul 17, 7:00 PM MDT | Severe Thunderstorm Warning | MSO | Granite | 60 min |
| Jul 17, 7:04 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 56 min |
| Jul 17, 7:17 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 58 min |
| Jul 17, 8:11 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 64 min |
| Jul 17, 8:17 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone | 58 min |
| Jul 17, 8:33 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt | 57 min |
| Jul 17, 8:37 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Rosebud | 63 min |
| Jul 17, 8:55 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 65 min |
| Jul 17, 9:05 PM MDT | Severe Thunderstorm Warning | GGW | Prairie | 55 min |
| Jul 17, 9:26 PM MDT | Severe Thunderstorm Warning | GGW | Daniels | 64 min |
| Jul 17, 9:39 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Richland | 66 min |
| Jul 17, 9:42 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 48 min |
| Jul 17, 9:48 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt | 57 min |
| Jul 17, 10:04 PM MDT | Severe Thunderstorm Warning | GGW | Prairie | 56 min |
| Jul 17, 10:06 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Rosebud | 64 min |
| Jul 17, 10:42 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Richland | 63 min |
| Jul 17, 11:12 PM MDT | Severe Thunderstorm Warning | GGW | Wibaux | 48 min |
| Jul 18, 12:30 AM MDT | Severe Thunderstorm Warning | BYZ | Fallon | 45 min |
| Jul 18, 3:52 PM MDT | Severe Thunderstorm Warning | TFX | Madison | 68 min |
| Jul 18, 4:50 PM MDT | Severe Thunderstorm Warning | TFX | Gallatin | 55 min |
| Jul 18, 5:33 PM MDT | Severe Thunderstorm Warning | BYZ | Park | 32 min |
| Jul 18, 6:05 PM MDT | Severe Thunderstorm Warning | BYZ | Park, Sweet Grass | 60 min |
| Jul 19, 8:30 AM MDT | Severe Thunderstorm Warning | MSO | Beaverhead, Silver Bow | 60 min |
| Jul 19, 9:34 AM MDT | Severe Thunderstorm Warning | MSO | Deer Lodge | 56 min |
| Jul 19, 12:00 PM MDT | Severe Thunderstorm Warning | MSO | Powell | 45 min |
| Jul 19, 2:19 PM MDT | Severe Thunderstorm Warning | MSO | Beaverhead | 56 min |
| Jul 19, 4:00 PM MDT | Severe Thunderstorm Warning | MSO | Silver Bow | 60 min |
| Jul 19, 5:00 PM MDT | Severe Thunderstorm Warning | TFX | Broadwater, Jefferson | 60 min |
| Jul 19, 5:25 PM MDT | Severe Thunderstorm Warning | MSO | Powell | 50 min |
| Jul 19, 5:45 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 60 min |
| Jul 19, 6:30 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 30 min |
| Jul 20, 3:39 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater, Yellowstone | 61 min |
| Jul 20, 4:28 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 62 min |
| Jul 20, 5:22 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Yellowstone | 63 min |
| Jul 20, 6:22 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 73 min |
| Jul 20, 7:31 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud | 64 min |
| Jul 21, 6:40 PM MDT | Severe Thunderstorm Warning | MSO | Lincoln | 65 min |
| Jul 21, 7:40 PM MDT | Severe Thunderstorm Warning | MSO | Lincoln | 65 min |
| Jul 21, 8:05 PM MDT | Severe Thunderstorm Warning | MSO | Flathead, Lake | 85 min |
| Jul 22, 7:30 PM MDT | Severe Thunderstorm Warning | TFX | Fergus, Judith Basin | 60 min |
| Jul 22, 8:30 PM MDT | Severe Thunderstorm Warning | TFX | Fergus, Judith Basin | 60 min |
| Jul 22, 9:47 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 43 min |
| Jul 22, 9:50 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Fergus | 60 min |
| Jul 22, 10:30 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 45 min |
| Jul 22, 10:30 PM MDT | Severe Thunderstorm Warning | TFX | Blaine | 45 min |
| Jul 22, 10:50 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 55 min |
| Jul 23, 5:55 PM MDT | Severe Thunderstorm Warning | MSO | Beaverhead | 65 min |
| Jul 23, 7:56 PM MDT | Severe Thunderstorm Warning | TFX | Gallatin | 64 min |
| Jul 23, 9:22 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 48 min |
| Jul 23, 9:26 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley | 64 min |
| Jul 23, 9:34 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 56 min |
| Jul 23, 9:37 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 68 min |
| Jul 23, 9:56 PM MDT | Severe Thunderstorm Warning | GGW | Petroleum | 34 min |
| Jul 23, 10:21 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 69 min |
| Jul 23, 10:30 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 30 min |
| Jul 23, 10:55 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 65 min |
| Jul 24, 2:14 AM MDT | Severe Thunderstorm Warning | GGW | Richland | 61 min |
| Jul 24, 6:08 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass | 62 min |
| Jul 24, 7:14 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 46 min |
| Jul 25, 2:50 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 60 min |
| Jul 25, 3:58 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud | 47 min |
| Jul 25, 4:15 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 60 min |
| Jul 25, 5:15 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 55 min |
| Jul 25, 6:11 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 49 min |
| Jul 26, 8:08 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater, Sweet Grass | 62 min |
| Jul 26, 9:11 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley | 64 min |
| Jul 26, 9:59 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater | 46 min |
| Jul 26, 10:09 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 61 min |
| Jul 26, 11:00 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon | 65 min |
| Jul 29, 5:49 PM MDT | Severe Thunderstorm Warning | MSO | Lincoln | 41 min |
| Aug 1, 7:20 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 40 min |
| Aug 2, 3:01 PM MDT | Severe Thunderstorm Warning | MSO | Beaverhead | 29 min |
| Aug 2, 3:28 PM MDT | Severe Thunderstorm Warning | MSO | Beaverhead | 47 min |
| Aug 2, 3:45 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 35 min |
| Aug 2, 4:37 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 33 min |
| Aug 2, 5:59 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater | 46 min |
| Aug 2, 6:21 PM MDT | Severe Thunderstorm Warning | GGW | Petroleum | 69 min |
| Aug 2, 6:51 PM MDT | Severe Thunderstorm Warning | TFX | Gallatin | 39 min |
| Aug 2, 7:05 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 55 min |
| Aug 2, 7:15 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 60 min |
| Aug 2, 7:39 PM MDT | Severe Thunderstorm Warning | GGW | McCone, Roosevelt | 66 min |
| Aug 2, 8:37 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 53 min |
| Aug 2, 9:04 PM MDT | Severe Thunderstorm Warning | GGW | Daniels | 56 min |
| Aug 2, 9:47 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 43 min |
| Aug 2, 9:58 PM MDT | Severe Thunderstorm Warning | GGW | Daniels | 47 min |
| Aug 4, 6:15 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 60 min |
| Aug 4, 7:25 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 50 min |
| Aug 5, 3:52 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 53 min |
| Aug 5, 4:00 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 45 min |
| Aug 5, 5:10 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 60 min |
| Aug 5, 9:00 PM MDT | Severe Thunderstorm Warning | MSO | Missoula, Powell | 60 min |
| Aug 7, 1:35 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 40 min |
| Aug 7, 1:41 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 49 min |
| Aug 7, 2:00 PM MDT | Severe Thunderstorm Warning | MSO | Missoula | 60 min |
| Aug 7, 2:15 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 60 min |
| Aug 7, 2:20 PM MDT | Severe Thunderstorm Warning | MSO | Missoula | 55 min |
| Aug 7, 3:00 PM MDT | Severe Thunderstorm Warning | MSO | Powell | 60 min |
| Aug 7, 3:30 PM MDT | Severe Thunderstorm Warning | MSO | Beaverhead, Deer Lodge, Ravalli | 30 min |
| Aug 7, 3:55 PM MDT | Severe Thunderstorm Warning | MSO | Lake | 35 min |
| Aug 7, 4:00 PM MDT | Severe Thunderstorm Warning | MSO | Powell | 45 min |
| Aug 7, 4:09 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 36 min |
| Aug 7, 4:30 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 45 min |
| Aug 7, 4:34 PM MDT | Severe Thunderstorm Warning | TFX | Pondera | 56 min |
| Aug 7, 4:43 PM MDT | Severe Thunderstorm Warning | MSO | Sanders | 47 min |
| Aug 7, 4:46 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 59 min |
| Aug 7, 5:16 PM MDT | Severe Thunderstorm Warning | MSO | Beaverhead | 59 min |
| Aug 7, 5:35 PM MDT | Severe Thunderstorm Warning | MSO | Granite, Missoula, Powell | 55 min |
| Aug 7, 5:35 PM MDT | Severe Thunderstorm Warning | MSO | Lake | 55 min |
| Aug 7, 6:09 PM MDT | Severe Thunderstorm Warning | TFX | Liberty, Pondera, Toole | 66 min |
| Aug 7, 6:09 PM MDT | Severe Thunderstorm Warning | TFX | Teton | 66 min |
| Aug 7, 6:15 PM MDT | Severe Thunderstorm Warning | MSO | Granite, Missoula, Powell | 60 min |
| Aug 7, 6:42 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 63 min |
| Aug 7, 6:57 PM MDT | Severe Thunderstorm Warning | TFX | Meagher | 63 min |
| Aug 7, 7:15 PM MDT | Severe Thunderstorm Warning | MSO | Granite, Powell | 45 min |
| Aug 7, 7:38 PM MDT | Severe Thunderstorm Warning | TFX | Teton | 52 min |
| Aug 7, 8:00 PM MDT | Severe Thunderstorm Warning | MSO | Powell | 45 min |
| Aug 7, 8:44 PM MDT | Severe Thunderstorm Warning | BYZ | Park | 46 min |
| Aug 7, 9:00 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 60 min |
| Aug 8, 2:10 PM MDT | Severe Thunderstorm Warning | GGW | Daniels | 65 min |
| Aug 8, 4:51 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 64 min |
| Aug 8, 5:59 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 46 min |
| Aug 8, 8:17 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 43 min |
| Aug 8, 9:05 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 20 min |
| Aug 14, 8:57 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 63 min |
| Aug 14, 9:40 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 65 min |
| Aug 15, 3:57 PM MDT | Severe Thunderstorm Warning | MSO | Lake, Sanders | 48 min |
| Aug 17, 11:31 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 64 min |
| Aug 18, 12:39 AM MDT | Severe Thunderstorm Warning | BYZ | Carter, Powder River | 61 min |
| Aug 18, 1:40 AM MDT | Severe Thunderstorm Warning | BYZ | Carter | 60 min |
| Aug 18, 6:36 PM MDT | Severe Thunderstorm Warning | BYZ | Park | 49 min |
| Aug 18, 7:16 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 64 min |
| Aug 18, 7:35 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass | 60 min |
| Aug 18, 8:47 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater | 63 min |
| Aug 20, 5:52 PM MDT | Severe Thunderstorm Warning | MSO | Granite | 68 min |
| Aug 20, 7:23 PM MDT | Severe Thunderstorm Warning | MSO | Missoula | 67 min |
| Aug 23, 4:03 PM MDT | Severe Thunderstorm Warning | MSO | Beaverhead | 27 min |
| Aug 26, 7:11 PM MDT | Severe Thunderstorm Warning | MSO | Powell | 64 min |
| Aug 26, 8:00 PM MDT | Severe Thunderstorm Warning | MSO | Deer Lodge, Granite | 45 min |
| Aug 27, 12:36 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt | 69 min |
| Aug 27, 2:40 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 65 min |
| Aug 27, 3:38 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Roosevelt | 67 min |
| Aug 27, 3:52 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass, Wheatland | 63 min |
| Aug 27, 4:35 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 55 min |
| Aug 27, 4:45 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Roosevelt | 60 min |
| Aug 27, 5:00 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 30 min |
| Aug 27, 5:35 PM MDT | Severe Thunderstorm Warning | TFX | Fergus, Judith Basin | 55 min |
| Aug 27, 6:00 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 60 min |
| Aug 27, 6:15 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt, Sheridan | 60 min |
| Aug 27, 6:22 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 63 min |
| Aug 27, 6:56 PM MDT | Severe Thunderstorm Warning | TFX | Judith Basin | 64 min |
| Aug 27, 7:15 PM MDT | Severe Thunderstorm Warning | GGW | Richland, Roosevelt | 60 min |
| Aug 27, 7:45 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 60 min |
| Aug 27, 7:55 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 65 min |
| Aug 27, 8:43 PM MDT | Severe Thunderstorm Warning | TFX | Hill | 47 min |
| Aug 27, 9:25 PM MDT | Severe Thunderstorm Warning | GGW | Dawson | 65 min |
| Aug 27, 9:37 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 63 min |
| Aug 27, 10:36 PM MDT | Severe Thunderstorm Warning | GGW | Dawson | 69 min |
| Aug 27, 11:49 PM MDT | Severe Thunderstorm Warning | BYZ | Fallon | 61 min |
| Aug 28, 12:53 AM MDT | Severe Thunderstorm Warning | BYZ | Fallon | 47 min |
| Aug 28, 6:50 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau | 40 min |
| Aug 28, 8:06 PM MDT | Severe Thunderstorm Warning | TFX | Judith Basin, Meagher | 54 min |
| Aug 28, 9:40 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 50 min |
| Aug 28, 9:52 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 68 min |
| Aug 28, 10:48 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 57 min |
| Aug 28, 11:02 PM MDT | Severe Thunderstorm Warning | GGW | Petroleum | 58 min |
| Aug 29, 12:01 AM MDT | Severe Thunderstorm Warning | GGW | Valley | 59 min |
| Aug 29, 12:43 AM MDT | Severe Thunderstorm Warning | GGW | McCone | 62 min |
| Aug 29, 1:00 AM MDT | Severe Thunderstorm Warning | GGW | Valley | 60 min |
| Aug 29, 1:13 AM MDT | Severe Thunderstorm Warning | GGW | Roosevelt | 62 min |
| Aug 29, 2:06 AM MDT | Severe Thunderstorm Warning | GGW | Roosevelt, Sheridan | 69 min |
| Sep 5, 5:58 PM MDT | Severe Thunderstorm Warning | MSO | Lake, Sanders | 62 min |
| Sep 5, 6:37 PM MDT | Severe Thunderstorm Warning | MSO | Mineral, Missoula | 68 min |
| Sep 5, 7:13 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 62 min |
| Sep 5, 8:02 PM MDT | Severe Thunderstorm Warning | MSO | Missoula, Powell | 58 min |
| Sep 5, 8:02 PM MDT | Severe Thunderstorm Warning | MSO | Lincoln | 58 min |
| Sep 6, 6:48 AM MDT | Severe Thunderstorm Warning | MSO | Missoula | 27 min |
| Sep 9, 6:03 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 62 min |
| Sep 10, 4:15 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 60 min |
| Sep 10, 6:00 PM MDT | Severe Thunderstorm Warning | MSO | Beaverhead | 30 min |
| Sep 11, 5:36 PM MDT | Severe Thunderstorm Warning | TFX | Gallatin | 39 min |
| Sep 14, 3:14 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 61 min |
| Sep 14, 9:30 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 45 min |
| Sep 15, 5:41 AM MDT | Severe Thunderstorm Warning | MSO | Missoula | 64 min |
| Sep 15, 10:40 AM MDT | Severe Thunderstorm Warning | MSO | Missoula, Powell | 60 min |
| Sep 15, 10:50 AM MDT | Severe Thunderstorm Warning | MSO | Granite, Powell | 40 min |
| Sep 15, 11:46 AM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 44 min |
| Sep 15, 12:27 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 48 min |
| Sep 15, 12:36 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Lewis and Clark | 54 min |
| Sep 15, 1:04 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 41 min |
| Sep 15, 1:42 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Judith Basin | 63 min |
| Sep 15, 2:42 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Chouteau, Hill | 63 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Big Horn County31
- Yellowstone County22
- Powder River County19
- Rosebud County17
- Phillips County17
- Carter County17
- Chouteau County16
- Custer County16
- Powell County16
- Cascade County16
- Fergus County15
- Valley County15
- Roosevelt County13
- Beaverhead County12
- Missoula County12
- Judith Basin County12
- Dawson County12
- Sweet Grass County11
- Richland County11
- Stillwater County10
- Lewis and Clark County10
- Flathead County10
- Garfield County9
- Blaine County9
- Golden Valley County8
- McCone County8
- Fallon County8
- Carbon County7
- Teton County7
- Musselshell County7
- Granite County7
- Wheatland County6
- Lake County6
- Treasure County6
- Prairie County6
- Daniels County6
- Lincoln County5
- Pondera County5
- Meagher County5
- Gallatin County5
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19961998
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.