Alert archive / Montana / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Montana, 2012
235 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
- 235
- Busiest month
- June134 severe thunderstorm warnings
- Busiest day
- June 26, 201230 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 |
|---|---|---|---|---|
| May 22, 2:57 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 42 min |
| May 29, 2:42 PM MDT | Severe Thunderstorm Warning | TFX | Fergus, Judith Basin | 48 min |
| Jun 2, 4:35 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 22 min |
| Jun 2, 4:38 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 52 min |
| Jun 2, 5:50 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Chouteau, Fergus | 70 min |
| Jun 2, 5:57 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone | 24 min |
| Jun 2, 7:30 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 30 min |
| Jun 4, 3:08 PM MDT | Severe Thunderstorm Warning | MSO | Missoula, Ravalli | 37 min |
| Jun 4, 3:41 PM MDT | Severe Thunderstorm Warning | MSO | Ravalli | 49 min |
| Jun 4, 3:46 PM MDT | Severe Thunderstorm Warning | MSO | Granite, Missoula, Powell, Ravalli | 44 min |
| Jun 4, 3:48 PM MDT | Severe Thunderstorm Warning | MSO | Deer Lodge, Granite, Powell | 27 min |
| Jun 4, 4:01 PM MDT | Severe Thunderstorm Warning | MSO | Granite, Powell | 29 min |
| Jun 4, 4:14 PM MDT | Severe Thunderstorm Warning | MSO | Granite, Powell | 31 min |
| Jun 4, 4:26 PM MDT | Severe Thunderstorm Warning | MSO | Granite, Missoula, Powell | 49 min |
| Jun 4, 4:31 PM MDT | Severe Thunderstorm Warning | MSO | Granite, Missoula, Ravalli | 29 min |
| Jun 4, 4:31 PM MDT | Severe Thunderstorm Warning | MSO | Granite, Powell | 44 min |
| Jun 4, 5:08 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 67 min |
| Jun 4, 5:53 PM MDT | Severe Thunderstorm Warning | MSO | Flathead, Missoula, Powell | 37 min |
| Jun 4, 6:13 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Lewis and Clark, Teton | 62 min |
| Jun 4, 6:59 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Pondera, Teton | 61 min |
| Jun 4, 7:53 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Hill, Liberty | 67 min |
| Jun 4, 8:48 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Hill, Liberty | 72 min |
| Jun 4, 9:14 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Liberty, Pondera, Teton, Toole | 61 min |
| Jun 4, 10:07 PM MDT | Severe Thunderstorm Warning | TFX | Glacier, Pondera, Teton, Toole | 38 min |
| Jun 4, 10:41 PM MDT | Severe Thunderstorm Warning | TFX | Glacier, Pondera, Teton | 49 min |
| Jun 4, 10:44 PM MDT | Severe Thunderstorm Warning | TFX | Glacier, Liberty, Pondera, Teton, Toole | 61 min |
| Jun 4, 11:10 PM MDT | Severe Thunderstorm Warning | MSO | Lincoln | 22 min |
| Jun 4, 11:11 PM MDT | Severe Thunderstorm Warning | MSO | Mineral, Sanders | 35 min |
| Jun 4, 11:47 PM MDT | Severe Thunderstorm Warning | TFX | Glacier, Liberty, Toole | 73 min |
| Jun 5, 3:05 PM MDT | Severe Thunderstorm Warning | TFX | Broadwater, Cascade, Lewis and Clark, Meagher | 40 min |
| Jun 5, 3:38 PM MDT | Severe Thunderstorm Warning | TFX | Meagher | 52 min |
| Jun 5, 3:49 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 13 min |
| Jun 5, 4:01 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark, Teton | 74 min |
| Jun 5, 4:30 PM MDT | Severe Thunderstorm Warning | BYZ | Wheatland | 60 min |
| Jun 5, 4:59 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark, Teton | 61 min |
| Jun 5, 5:13 PM MDT | Severe Thunderstorm Warning | TFX | Judith Basin, Meagher | 25 min |
| Jun 5, 5:37 PM MDT | Severe Thunderstorm Warning | TFX | Fergus, Judith Basin | 53 min |
| Jun 5, 6:16 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Fergus, Judith Basin | 59 min |
| Jun 5, 7:24 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 51 min |
| Jun 8, 6:00 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 60 min |
| Jun 8, 7:30 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 29 min |
| Jun 8, 8:40 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Valley | 35 min |
| Jun 8, 9:13 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Valley | 47 min |
| Jun 8, 9:54 PM MDT | Severe Thunderstorm Warning | GGW | McCone, Valley | 36 min |
| Jun 8, 10:34 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 26 min |
| Jun 8, 10:37 PM MDT | Severe Thunderstorm Warning | GGW | McCone, Valley | 23 min |
| Jun 8, 10:40 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 65 min |
| Jun 8, 10:47 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 43 min |
| Jun 8, 10:55 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Valley | 50 min |
| Jun 8, 10:59 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 46 min |
| Jun 8, 11:13 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Prairie | 47 min |
| Jun 8, 11:17 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud, Treasure | 58 min |
| Jun 8, 11:36 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud, Treasure | 33 min |
| Jun 8, 11:57 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Prairie | 48 min |
| Jun 9, 12:30 AM MDT | Severe Thunderstorm Warning | GGW | Dawson, Garfield, McCone, Prairie | 60 min |
| Jun 9, 1:11 AM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Richland, Roosevelt | 64 min |
| Jun 9, 1:58 AM MDT | Severe Thunderstorm Warning | GGW | Roosevelt, Sheridan | 62 min |
| Jun 9, 2:09 AM MDT | Severe Thunderstorm Warning | GGW | Richland, Roosevelt | 51 min |
| Jun 13, 7:15 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt, Sheridan | 42 min |
| Jun 23, 9:47 AM MDT | Severe Thunderstorm Warning | GGW | Dawson, Wibaux | 58 min |
| Jun 23, 10:39 AM MDT | Severe Thunderstorm Warning | GGW | Dawson, Wibaux | 51 min |
| Jun 23, 11:25 AM MDT | Severe Thunderstorm Warning | GGW | Wibaux | 35 min |
| Jun 23, 2:56 PM MDT | Severe Thunderstorm Warning | MSO | Granite, Missoula, Ravalli | 64 min |
| Jun 23, 4:25 PM MDT | Severe Thunderstorm Warning | MSO | Lincoln | 31 min |
| Jun 23, 6:25 PM MDT | Severe Thunderstorm Warning | TFX | Glacier | 40 min |
| Jun 23, 6:58 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark, Teton | 47 min |
| Jun 23, 7:14 PM MDT | Severe Thunderstorm Warning | MSO | Lake, Missoula, Sanders | 31 min |
| Jun 23, 7:39 PM MDT | Severe Thunderstorm Warning | MSO | Lake, Missoula | 51 min |
| Jun 23, 7:42 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton | 48 min |
| Jun 23, 7:52 PM MDT | Severe Thunderstorm Warning | MSO | Flathead, Lake, Missoula, Powell | 38 min |
| Jun 23, 8:21 PM MDT | Severe Thunderstorm Warning | MSO | Flathead, Missoula, Powell | 39 min |
| Jun 23, 8:29 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Liberty, Pondera, Teton, Toole | 46 min |
| Jun 23, 8:58 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark, Teton | 47 min |
| Jun 23, 9:14 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Liberty, Pondera, Teton, Toole | 46 min |
| Jun 23, 9:31 PM MDT | Severe Thunderstorm Warning | TFX | Teton | 44 min |
| Jun 23, 9:43 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark, Teton | 33 min |
| Jun 23, 9:54 PM MDT | Severe Thunderstorm Warning | TFX | Hill, Liberty, Pondera, Toole | 51 min |
| Jun 23, 10:10 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton, Toole | 50 min |
| Jun 23, 10:59 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Toole | 17 min |
| Jun 24, 1:43 AM MDT | Severe Thunderstorm Warning | GGW | Phillips | 62 min |
| Jun 24, 2:43 AM MDT | Severe Thunderstorm Warning | GGW | Phillips | 62 min |
| Jun 24, 3:06 AM MDT | Severe Thunderstorm Warning | GGW | Valley | 39 min |
| Jun 24, 3:43 AM MDT | Severe Thunderstorm Warning | GGW | Daniels, Roosevelt, Valley | 62 min |
| Jun 24, 4:31 AM MDT | Severe Thunderstorm Warning | GGW | Valley | 59 min |
| Jun 24, 4:53 AM MDT | Severe Thunderstorm Warning | GGW | Valley | 67 min |
| Jun 24, 5:57 AM MDT | Severe Thunderstorm Warning | GGW | Roosevelt, Valley | 63 min |
| Jun 24, 6:55 AM MDT | Severe Thunderstorm Warning | GGW | McCone, Richland, Roosevelt | 65 min |
| Jun 24, 7:25 AM MDT | Severe Thunderstorm Warning | GGW | Richland, Roosevelt, Sheridan | 65 min |
| Jun 24, 8:20 AM MDT | Severe Thunderstorm Warning | GGW | Richland, Roosevelt | 40 min |
| Jun 24, 9:02 AM MDT | Severe Thunderstorm Warning | GGW | McCone, Roosevelt, Valley | 58 min |
| Jun 24, 10:57 AM MDT | Severe Thunderstorm Warning | GGW | Richland, Roosevelt | 33 min |
| Jun 24, 11:27 AM MDT | Severe Thunderstorm Warning | GGW | Richland, Roosevelt | 63 min |
| Jun 24, 11:52 PM MDT | Severe Thunderstorm Warning | TFX | Hill | 38 min |
| Jun 25, 12:23 AM MDT | Severe Thunderstorm Warning | TFX | Hill | 37 min |
| Jun 25, 12:58 AM MDT | Severe Thunderstorm Warning | TFX | Blaine, Hill | 30 min |
| Jun 25, 4:19 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 26 min |
| Jun 25, 4:36 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Custer, Powder River | 54 min |
| Jun 25, 4:44 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 46 min |
| Jun 25, 5:15 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Fallon, Powder River | 60 min |
| Jun 25, 5:34 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Petroleum | 47 min |
| Jun 25, 5:38 PM MDT | Severe Thunderstorm Warning | TFX | Glacier, Pondera, Teton | 52 min |
| Jun 25, 6:07 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 23 min |
| Jun 25, 6:22 PM MDT | Severe Thunderstorm Warning | TFX | Glacier, Pondera, Toole | 38 min |
| Jun 25, 6:28 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Prairie | 62 min |
| Jun 25, 6:31 PM MDT | Severe Thunderstorm Warning | TFX | Glacier, Pondera, Teton | 44 min |
| Jun 26, 12:41 AM MDT | Severe Thunderstorm Warning | GGW | Phillips | 64 min |
| Jun 26, 1:52 AM MDT | Severe Thunderstorm Warning | TFX | Blaine | 38 min |
| Jun 26, 1:59 AM MDT | Severe Thunderstorm Warning | GGW | Phillips | 61 min |
| Jun 26, 2:27 AM MDT | Severe Thunderstorm Warning | TFX | Blaine | 48 min |
| Jun 26, 3:06 AM MDT | Severe Thunderstorm Warning | TFX | Glacier, Pondera, Toole | 39 min |
| Jun 26, 3:32 AM MDT | Severe Thunderstorm Warning | GGW | Phillips | 58 min |
| Jun 26, 3:38 AM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton | 37 min |
| Jun 26, 4:10 AM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Liberty, Pondera, Teton, Toole | 50 min |
| Jun 26, 5:41 AM MDT | Severe Thunderstorm Warning | MSO | Flathead, Lake | 34 min |
| Jun 26, 5:47 AM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Hill, Liberty | 43 min |
| Jun 26, 6:00 AM MDT | Severe Thunderstorm Warning | MSO | Flathead, Lake | 30 min |
| Jun 26, 6:25 AM MDT | Severe Thunderstorm Warning | MSO | Flathead | 35 min |
| Jun 26, 6:38 AM MDT | Severe Thunderstorm Warning | MSO | Flathead, Lincoln, Sanders | 52 min |
| Jun 26, 6:53 AM MDT | Severe Thunderstorm Warning | MSO | Flathead | 37 min |
| Jun 26, 7:01 AM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Liberty, Pondera, Toole | 44 min |
| Jun 26, 7:08 AM MDT | Severe Thunderstorm Warning | TFX | Hill | 52 min |
| Jun 26, 7:13 AM MDT | Severe Thunderstorm Warning | TFX | Liberty, Pondera, Toole | 47 min |
| Jun 26, 7:39 AM MDT | Severe Thunderstorm Warning | TFX | Hill, Liberty, Toole | 66 min |
| Jun 26, 10:25 AM MDT | Severe Thunderstorm Warning | MSO | Flathead, Lake, Missoula | 50 min |
| Jun 26, 11:09 AM MDT | Severe Thunderstorm Warning | MSO | Flathead, Missoula, Powell | 35 min |
| Jun 26, 11:16 AM MDT | Severe Thunderstorm Warning | TFX | Glacier, Lewis and Clark, Pondera, Teton | 59 min |
| Jun 26, 12:08 PM MDT | Severe Thunderstorm Warning | TFX | Glacier, Pondera, Teton, Toole | 67 min |
| Jun 26, 12:42 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Teton | 63 min |
| Jun 26, 1:41 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Hill | 38 min |
| Jun 26, 2:32 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Hill | 73 min |
| Jun 26, 4:50 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 44 min |
| Jun 26, 6:21 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone | 39 min |
| Jun 26, 6:53 PM MDT | Severe Thunderstorm Warning | GGW | Daniels | 67 min |
| Jun 26, 6:59 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Richland | 61 min |
| Jun 26, 7:55 PM MDT | Severe Thunderstorm Warning | GGW | Richland, Roosevelt | 53 min |
| Jun 26, 8:03 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 37 min |
| Jul 1, 2:15 AM MDT | Severe Thunderstorm Warning | MSO | Flathead, Lake, Mineral, Missoula, Sanders | 45 min |
| Jul 1, 3:31 PM MDT | Severe Thunderstorm Warning | MSO | Ravalli | 44 min |
| Jul 1, 3:52 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Custer, Fallon | 50 min |
| Jul 1, 4:58 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Custer, Fallon | 62 min |
| Jul 1, 5:46 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Fallon | 59 min |
| Jul 1, 10:46 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Phillips, Valley | 59 min |
| Jul 1, 11:40 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Garfield, McCone, Roosevelt, Valley | 65 min |
| Jul 2, 12:43 AM MDT | Severe Thunderstorm Warning | GGW | Daniels, McCone, Roosevelt, Sheridan, Valley | 62 min |
| Jul 3, 2:56 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 64 min |
| Jul 3, 3:18 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Valley | 42 min |
| Jul 3, 3:30 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Valley | 60 min |
| Jul 3, 3:58 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Garfield, McCone, Roosevelt, Valley | 32 min |
| Jul 3, 4:22 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Prairie, Richland | 53 min |
| Jul 3, 4:25 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Roosevelt, Sheridan, Valley | 65 min |
| Jul 3, 4:29 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Richland, Roosevelt, Valley | 61 min |
| Jul 3, 5:26 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, McCone, Richland, Roosevelt, Sheridan | 64 min |
| Jul 3, 5:36 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Prairie, Richland | 54 min |
| Jul 3, 6:23 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, McCone, Richland, Roosevelt, Sheridan | 52 min |
| Jul 3, 6:26 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Richland | 33 min |
| Jul 3, 7:36 PM MDT | Severe Thunderstorm Warning | GGW | Richland, Roosevelt, Sheridan | 54 min |
| Jul 6, 5:24 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau | 51 min |
| Jul 10, 7:04 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 26 min |
| Jul 10, 9:32 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater, Yellowstone | 43 min |
| Jul 11, 3:39 PM MDT | Severe Thunderstorm Warning | GGW | McCone, Valley | 66 min |
| Jul 11, 4:43 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt, Valley | 62 min |
| Jul 14, 6:01 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Prairie, Wibaux | 59 min |
| Jul 14, 7:28 PM MDT | Severe Thunderstorm Warning | MSO | Mineral | 32 min |
| Jul 14, 8:01 PM MDT | Severe Thunderstorm Warning | MSO | Mineral, Missoula | 11 min |
| Jul 15, 2:40 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 50 min |
| Jul 16, 3:04 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 26 min |
| Jul 17, 5:14 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Powder River | 61 min |
| Jul 17, 6:45 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 45 min |
| Jul 20, 3:09 PM MDT | Severe Thunderstorm Warning | MSO | Mineral, Missoula, Ravalli, Sanders | 51 min |
| Jul 20, 4:21 PM MDT | Severe Thunderstorm Warning | MSO | Lincoln, Sanders | 39 min |
| Jul 20, 4:31 PM MDT | Severe Thunderstorm Warning | MSO | Lincoln, Mineral, Sanders | 59 min |
| Jul 20, 4:53 PM MDT | Severe Thunderstorm Warning | MSO | Flathead, Lincoln, Sanders | 67 min |
| Jul 20, 6:13 PM MDT | Severe Thunderstorm Warning | MSO | Flathead, Lake, Lincoln | 62 min |
| Jul 21, 5:35 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 31 min |
| Jul 21, 5:44 PM MDT | Severe Thunderstorm Warning | GGW | Richland, Roosevelt | 61 min |
| Jul 21, 6:38 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Petroleum | 52 min |
| Jul 21, 6:45 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 30 min |
| Jul 22, 10:38 PM MDT | Severe Thunderstorm Warning | MSO | Flathead, Lincoln | 52 min |
| Jul 22, 11:28 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 32 min |
| Jul 23, 8:52 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 30 min |
| Jul 23, 10:24 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Rosebud | 66 min |
| Jul 24, 2:07 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Richland, Wibaux | 53 min |
| Jul 24, 2:55 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Richland, Wibaux | 22 min |
| Jul 24, 5:07 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Wibaux | 38 min |
| Jul 24, 5:42 PM MDT | Severe Thunderstorm Warning | GGW | Wibaux | 14 min |
| Jul 24, 7:20 PM MDT | Severe Thunderstorm Warning | BYZ | Fallon | 52 min |
| Jul 26, 6:15 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Musselshell | 60 min |
| Jul 26, 7:37 PM MDT | Severe Thunderstorm Warning | TFX | Glacier | 53 min |
| Jul 26, 8:24 PM MDT | Severe Thunderstorm Warning | TFX | Glacier, Toole | 66 min |
| Jul 27, 3:14 PM MDT | Severe Thunderstorm Warning | MSO | Missoula | 46 min |
| Jul 27, 3:47 PM MDT | Severe Thunderstorm Warning | MSO | Missoula | 41 min |
| Jul 27, 3:53 PM MDT | Severe Thunderstorm Warning | MSO | Deer Lodge, Powell, Silver Bow | 67 min |
| Jul 27, 10:27 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 38 min |
| Jul 27, 11:11 PM MDT | Severe Thunderstorm Warning | MSO | Flathead, Lake | 38 min |
| Jul 28, 2:09 PM MDT | Severe Thunderstorm Warning | TFX | Liberty, Pondera, Toole | 51 min |
| Jul 28, 2:31 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton, Toole | 44 min |
| Jul 28, 3:19 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Hill, Liberty, Toole | 41 min |
| Jul 28, 8:07 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Prairie | 53 min |
| Jul 28, 8:11 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Roosevelt, Valley | 64 min |
| Jul 28, 10:21 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Prairie, Richland, Wibaux | 54 min |
| Jul 30, 4:45 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Teton | 45 min |
| Jul 31, 12:13 AM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Valley | 31 min |
| Jul 31, 2:54 AM MDT | Severe Thunderstorm Warning | GGW | Richland | 36 min |
| Aug 1, 2:37 PM MDT | Severe Thunderstorm Warning | GGW | Daniels | 53 min |
| Aug 1, 3:25 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Roosevelt, Sheridan | 65 min |
| Aug 1, 4:26 PM MDT | Severe Thunderstorm Warning | GGW | Richland, Roosevelt | 49 min |
| Aug 2, 1:46 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 59 min |
| Aug 2, 1:59 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Custer, Fallon | 59 min |
| Aug 2, 2:19 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Powder River | 56 min |
| Aug 2, 2:40 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Prairie, Wibaux | 62 min |
| Aug 2, 3:15 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Powder River | 26 min |
| Aug 8, 4:41 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Teton | 68 min |
| Aug 8, 5:31 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau | 89 min |
| Aug 8, 6:20 PM MDT | Severe Thunderstorm Warning | TFX | Hill, Liberty, Toole | 80 min |
| Aug 8, 9:03 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Teton | 47 min |
| Aug 10, 1:10 AM MDT | Severe Thunderstorm Warning | MSO | Deer Lodge | 25 min |
| Aug 13, 6:07 AM MDT | Severe Thunderstorm Warning | GGW | Garfield | 24 min |
| Aug 13, 9:49 AM MDT | Severe Thunderstorm Warning | TFX | Blaine | 41 min |
| Aug 13, 10:43 AM MDT | Severe Thunderstorm Warning | GGW | Phillips, Valley | 48 min |
| Aug 13, 12:31 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Valley | 44 min |
| Aug 13, 1:09 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone | 66 min |
| Aug 13, 2:05 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Prairie | 25 min |
| Aug 13, 4:15 PM MDT | Severe Thunderstorm Warning | GGW | Prairie | 30 min |
| Aug 13, 4:20 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Fallon | 55 min |
| Aug 13, 4:47 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 58 min |
| Aug 13, 5:12 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 63 min |
| Aug 13, 5:56 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Custer, Powder River | 49 min |
| Aug 13, 5:57 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 26 min |
| Aug 13, 6:05 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Fallon | 55 min |
| Aug 13, 6:45 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 31 min |
| Aug 14, 6:42 PM MDT | Severe Thunderstorm Warning | TFX | Glacier, Liberty, Toole | 78 min |
| Aug 14, 8:03 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Judith Basin, Lewis and Clark, Teton | 72 min |
| Aug 14, 9:04 PM MDT | Severe Thunderstorm Warning | TFX | Broadwater, Cascade, Chouteau, Fergus, Gallatin, Jefferson and 3 more | 56 min |
| Aug 21, 5:41 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 49 min |
| Aug 21, 7:06 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 39 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- McCone County30
- Valley County29
- Teton County28
- Roosevelt County26
- Richland County24
- Chouteau County23
- Garfield County23
- Pondera County23
- Toole County22
- Dawson County18
- Missoula County17
- Flathead County17
- Liberty County17
- Glacier County14
- Cascade County13
- Hill County13
- Carter County13
- Lewis and Clark County12
- Prairie County12
- Sheridan County11
- Powell County11
- Daniels County11
- Custer County11
- Wibaux County10
- Phillips County9
- Lake County9
- Fergus County8
- Granite County8
- Lincoln County8
- Sanders County8
- Fallon County8
- Ravalli County7
- Powder River County7
- Judith Basin County6
- Blaine County6
- Mineral County6
- Meagher County4
- Rosebud County4
- Yellowstone County3
- Deer Lodge County3
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. Rebuilt daily.