Alert archive / Montana / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Montana, 1986
63 severe thunderstorm warnings in 1986. 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 1986. Tap one for its archive.
- Severe Thunderstorm Warnings
- 63
- Busiest month
- June39 severe thunderstorm warnings
- Busiest day
- June 4, 19867 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 11, 2:35 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud, Treasure | 55 min |
| May 21, 6:17 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 58 min |
| May 21, 6:17 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 58 min |
| May 21, 7:06 PM MDT | Severe Thunderstorm Warning | TFX | Fergus, Petroleum | 69 min |
| Jun 2, 8:00 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Sheridan | 90 min |
| Jun 2, 9:00 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt, Sheridan | 60 min |
| Jun 4, 2:54 PM MDT | Severe Thunderstorm Warning | MSO | Mineral, Missoula, Sanders | 36 min |
| Jun 4, 2:54 PM MDT | Severe Thunderstorm Warning | MSO | Lake | 36 min |
| Jun 4, 4:28 PM MDT | Severe Thunderstorm Warning | MSO | Lewis and Clark, Powell | 62 min |
| Jun 4, 4:36 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton | 69 min |
| Jun 4, 5:30 PM MDT | Severe Thunderstorm Warning | MSO | Granite | 60 min |
| Jun 4, 5:38 PM MDT | Severe Thunderstorm Warning | MSO | Lewis and Clark | 22 min |
| Jun 4, 5:47 PM MDT | Severe Thunderstorm Warning | MSO | Powell | 58 min |
| Jun 5, 1:46 AM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton | 59 min |
| Jun 5, 1:46 PM MDT | Severe Thunderstorm Warning | MSO | Granite, Ravalli | 59 min |
| Jun 5, 2:12 PM MDT | Severe Thunderstorm Warning | MSO | Beaverhead, Deer Lodge, Silver Bow | 48 min |
| Jun 5, 5:14 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon | 61 min |
| Jun 5, 5:53 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 67 min |
| Jun 6, 11:52 AM MDT | Severe Thunderstorm Warning | MSO | Granite, Ravalli | 68 min |
| Jun 7, 5:15 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 60 min |
| Jun 7, 5:34 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 56 min |
| Jun 7, 5:37 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Sweet Grass | 68 min |
| Jun 7, 6:33 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Musselshell | 57 min |
| Jun 8, 4:49 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud, Treasure, Yellowstone | 56 min |
| Jun 8, 4:49 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 56 min |
| Jun 14, 5:38 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 57 min |
| Jun 17, 5:59 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Toole | 61 min |
| Jun 17, 6:12 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 63 min |
| Jun 18, 5:55 PM MDT | Severe Thunderstorm Warning | TFX | Teton | 65 min |
| Jun 18, 6:24 PM MDT | Severe Thunderstorm Warning | TFX | Pondera | 66 min |
| Jun 18, 8:44 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone | 76 min |
| Jun 19, 5:30 AM MDT | Severe Thunderstorm Warning | GGW | Richland, Roosevelt | 60 min |
| Jun 20, 8:15 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 60 min |
| Jun 20, 9:22 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 3 hr |
| Jun 25, 6:53 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 67 min |
| Jun 25, 9:07 PM MDT | Severe Thunderstorm Warning | BYZ | Dawson, Wibaux | 68 min |
| Jun 25, 9:43 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 77 min |
| Jun 27, 8:18 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon | 117 min |
| Jun 27, 8:37 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater, Yellowstone | 113 min |
| Jun 27, 9:03 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 117 min |
| Jun 29, 4:45 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 60 min |
| Jun 29, 5:56 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud, Treasure | 2 hr |
| Jun 29, 7:35 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Powder River | 115 min |
| Jul 9, 5:53 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 67 min |
| Jul 9, 6:20 PM MDT | Severe Thunderstorm Warning | GGW | Daniels | 23 hr |
| Jul 9, 6:53 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 67 min |
| Jul 9, 7:15 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt, Sheridan | 3 hr |
| Jul 15, 4:14 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass | 46 min |
| Jul 15, 5:04 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Stillwater, Sweet Grass | 56 min |
| Jul 15, 6:00 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater, Yellowstone | 60 min |
| Jul 15, 6:52 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell, Yellowstone | 68 min |
| Jul 16, 3:11 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon, Stillwater, Yellowstone | 64 min |
| Jul 16, 4:05 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater, Yellowstone | 70 min |
| Jul 16, 4:52 PM MDT | Severe Thunderstorm Warning | BYZ | Dawson | 3 hr |
| Jul 16, 4:57 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell, Yellowstone | 63 min |
| Jul 16, 8:30 PM MDT | Severe Thunderstorm Warning | BYZ | Dawson, Prairie, Wibaux | 90 min |
| Jul 22, 5:40 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt, Sheridan | 60 min |
| Jul 22, 6:45 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt | 60 min |
| Aug 5, 6:10 PM MDT | Severe Thunderstorm Warning | TFX | Phillips | 50 min |
| Aug 5, 6:40 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 65 min |
| Aug 5, 7:46 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud, Treasure, Yellowstone | 59 min |
| Aug 12, 4:48 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt | 42 min |
| Aug 12, 10:45 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt | 60 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Yellowstone County9
- Rosebud County8
- Roosevelt County7
- Musselshell County5
- Stillwater County5
- Big Horn County4
- Treasure County4
- Sheridan County4
- Pondera County4
- Richland County4
- Teton County3
- Granite County3
- Carbon County3
- Golden Valley County3
- Sweet Grass County3
- Dawson County3
- Garfield County2
- Daniels County2
- Lewis and Clark County2
- Powell County2
- Ravalli County2
- Cascade County2
- McCone County2
- Custer County2
- Wibaux County2
- Fergus County1
- Petroleum County1
- Mineral County1
- Missoula County1
- Sanders County1
- Lake County1
- Beaverhead County1
- Deer Lodge County1
- Silver Bow County1
- Toole County1
- Powder River County1
- Prairie County1
- Phillips County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
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.