Alert archive / Montana / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Montana, 1990
75 severe thunderstorm warnings in 1990. 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 1990. Tap one for its archive.
- Severe Thunderstorm Warnings
- 75
- Busiest month
- July30 severe thunderstorm warnings
- Busiest day
- June 28, 199011 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 23, 1:20 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud | 115 min |
| May 23, 2:06 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 99 min |
| May 23, 4:44 PM MDT | Severe Thunderstorm Warning | MSO | Mineral, Sanders | 61 min |
| May 30, 5:17 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 58 min |
| May 31, 6:46 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell, Yellowstone | 59 min |
| May 31, 6:47 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 58 min |
| May 31, 9:13 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud, Treasure | 92 min |
| Jun 10, 3:56 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 64 min |
| Jun 10, 6:49 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Fallon | 56 min |
| Jun 24, 12:22 AM MDT | Severe Thunderstorm Warning | BYZ | Carbon | 68 min |
| Jun 25, 8:31 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Stillwater | 59 min |
| Jun 25, 8:59 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell, Yellowstone | 61 min |
| Jun 25, 9:22 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 68 min |
| Jun 25, 9:59 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell, Yellowstone | 61 min |
| Jun 26, 6:15 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 60 min |
| Jun 26, 7:10 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 65 min |
| Jun 27, 5:15 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 60 min |
| Jun 27, 6:41 PM MDT | Severe Thunderstorm Warning | TFX | Golden Valley, Musselshell, Petroleum | 64 min |
| Jun 27, 6:41 PM MDT | Severe Thunderstorm Warning | TFX | Wheatland | 64 min |
| Jun 27, 7:35 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 60 min |
| Jun 27, 7:43 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud, Treasure | 62 min |
| Jun 27, 8:41 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud, Treasure | 64 min |
| Jun 27, 9:00 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 60 min |
| Jun 27, 9:30 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 30 min |
| Jun 27, 9:40 PM MDT | Severe Thunderstorm Warning | BYZ | Dawson, Prairie | 65 min |
| Jun 27, 10:41 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Custer, Fallon, Prairie | 94 min |
| Jun 27, 10:41 PM MDT | Severe Thunderstorm Warning | BYZ | Dawson, Wibaux | 94 min |
| Jun 28, 5:15 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt | 60 min |
| Jun 28, 6:15 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt | 60 min |
| Jun 28, 6:45 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 60 min |
| Jun 30, 8:11 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Phillips, Valley | 64 min |
| Jun 30, 9:22 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Phillips, Valley | 68 min |
| Jul 1, 8:44 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 61 min |
| Jul 1, 10:45 PM MDT | Severe Thunderstorm Warning | GGW | McCone, Richland, Roosevelt | 60 min |
| Jul 2, 3:49 PM MDT | Severe Thunderstorm Warning | MSO | Broadwater, Lewis and Clark | 56 min |
| Jul 2, 4:01 PM MDT | Severe Thunderstorm Warning | MSO | Meagher | 59 min |
| Jul 2, 4:06 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 69 min |
| Jul 2, 4:23 PM MDT | Severe Thunderstorm Warning | TFX | Teton | 67 min |
| Jul 2, 4:39 PM MDT | Severe Thunderstorm Warning | MSO | Broadwater, Lewis and Clark, Meagher | 66 min |
| Jul 2, 6:31 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone | 59 min |
| Jul 2, 7:32 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 58 min |
| Jul 5, 8:39 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau | 66 min |
| Jul 5, 9:54 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Hill | 66 min |
| Jul 5, 10:19 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 56 min |
| Jul 5, 10:56 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Hill | 64 min |
| Jul 6, 12:02 AM MDT | Severe Thunderstorm Warning | GGW | Phillips | 58 min |
| Jul 6, 12:02 AM MDT | Severe Thunderstorm Warning | TFX | Blaine | 58 min |
| Jul 6, 12:52 AM MDT | Severe Thunderstorm Warning | GGW | Phillips | 68 min |
| Jul 6, 12:52 AM MDT | Severe Thunderstorm Warning | TFX | Blaine | 68 min |
| Jul 6, 5:19 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 56 min |
| Jul 6, 7:06 PM MDT | Severe Thunderstorm Warning | GGW | McCone, Roosevelt, Valley | 69 min |
| Jul 6, 8:24 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Treasure | 66 min |
| Jul 10, 12:03 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 57 min |
| Jul 10, 1:01 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Yellowstone | 59 min |
| Jul 10, 1:29 PM MDT | Severe Thunderstorm Warning | TFX | Petroleum | 61 min |
| Jul 10, 1:57 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Yellowstone | 63 min |
| Jul 10, 2:57 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 63 min |
| Jul 26, 9:53 AM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 67 min |
| Jul 26, 2:11 PM MDT | Severe Thunderstorm Warning | BYZ | Fallon, Wibaux | 64 min |
| Jul 26, 3:36 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 69 min |
| Aug 19, 5:56 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Powder River, Rosebud | 64 min |
| Aug 20, 3:49 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater | 56 min |
| Aug 20, 4:27 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 63 min |
| Aug 20, 4:30 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 60 min |
| Aug 20, 4:47 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Stillwater, Yellowstone | 58 min |
| Aug 20, 4:47 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 58 min |
| Aug 20, 5:42 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 63 min |
| Aug 20, 6:43 PM MDT | Severe Thunderstorm Warning | MSO | Lincoln | 62 min |
| Aug 20, 11:10 PM MDT | Severe Thunderstorm Warning | MSO | Lewis and Clark | 35 min |
| Aug 20, 11:20 PM MDT | Severe Thunderstorm Warning | MSO | Lewis and Clark | 25 min |
| Aug 21, 6:07 PM MDT | Severe Thunderstorm Warning | BYZ | Dawson | 68 min |
| Aug 21, 6:07 PM MDT | Severe Thunderstorm Warning | BYZ | Fallon | 68 min |
| Aug 24, 7:42 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass | 63 min |
| Aug 25, 4:40 PM MDT | Severe Thunderstorm Warning | BYZ | Sweet Grass, Wheatland | 65 min |
| Aug 26, 2:07 PM MDT | Severe Thunderstorm Warning | GGW | McCone, Richland | 2 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Musselshell County8
- Rosebud County7
- Yellowstone County7
- Big Horn County6
- Garfield County6
- McCone County6
- Treasure County4
- Fallon County4
- Sheridan County4
- Valley County4
- Roosevelt County4
- Phillips County4
- Lewis and Clark County4
- Cascade County4
- Blaine County4
- Golden Valley County3
- Stillwater County3
- Richland County3
- Dawson County3
- Powder River County2
- Carter County2
- Petroleum County2
- Wheatland County2
- Prairie County2
- Wibaux County2
- Broadwater County2
- Meagher County2
- Chouteau County2
- Hill County2
- Sweet Grass County2
- Mineral County1
- Sanders County1
- Carbon County1
- Custer County1
- Teton County1
- Flathead County1
- Lincoln County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19891991
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.