Weather alerts in Montana, 1990
101 weather alerts in 1990, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in 1990. Tap one for its archive.
- Alerts
- 101
- Warnings
- 101
- Watches
- 0
- Advisories
- 0
- Busiest month
- July36 alerts
- Busiest day
- August 20, 199015 alerts
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 24, 3:34 PM MDT | Tornado Warning | BYZ | Carbon | 56 min |
| May 24, 4:12 PM MDT | Tornado Warning | BYZ | Golden Valley, Wheatland | 63 min |
| May 24, 5:04 PM MDT | Tornado Warning | BYZ | Yellowstone | 56 min |
| May 24, 6:50 PM MDT | Tornado Warning | BYZ | Carter, Custer, Powder River | 55 min |
| May 24, 10:01 PM MDT | Flash Flood Warning | TFX | Hill | 119 min |
| May 28, 4:33 PM MDT | Tornado Warning | TFX | Cascade | 27 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 |
| May 31, 10:28 PM MDT | Tornado Warning | BYZ | Rosebud | 32 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, 8:05 PM MDT | Tornado Warning | GGW | Roosevelt | 55 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 28, 7:00 PM MDT | Tornado Warning | GGW | Richland, Roosevelt | 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, 6:24 PM MDT | Tornado Warning | TFX | Blaine | 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, 7:43 PM MDT | Tornado Warning | MSO | Flathead | 62 min |
| Jul 5, 8:39 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau | 66 min |
| Jul 5, 9:23 PM MDT | Tornado Warning | TFX | Cascade | 52 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 6, 9:42 PM MDT | Tornado Warning | BYZ | Rosebud | 33 min |
| Jul 6, 10:13 PM MDT | Tornado Warning | BYZ | Custer, Rosebud | 32 min |
| Jul 10, 12:03 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 57 min |
| Jul 10, 1:01 PM MDT | Flash Flood Warning | BYZ | Big Horn, Yellowstone | 59 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 |
| Jul 31, 6:57 PM MDT | Flash Flood Warning | MSO | Madison | 63 min |
| Aug 19, 5:56 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Powder River, Rosebud | 64 min |
| Aug 19, 7:55 PM MDT | Flash Flood Warning | MSO | Lewis and Clark | 2 hr |
| Aug 19, 8:36 PM MDT | Flash Flood Warning | TFX | Fergus, Judith Basin | 2 hr |
| Aug 19, 8:36 PM MDT | Flash Flood Warning | TFX | Teton | 2 hr |
| Aug 19, 8:36 PM MDT | Flash Flood Warning | TFX | Cascade | 69 min |
| Aug 19, 8:50 PM MDT | Flash Flood Warning | BYZ | Golden Valley, Musselshell, Wheatland | 115 min |
| Aug 19, 10:54 PM MDT | Flash Flood Warning | BYZ | Musselshell, Yellowstone | 111 min |
| Aug 20, 12:53 AM MDT | Flash Flood Warning | BYZ | Golden Valley, Musselshell | 2 hr |
| 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, 5:12 PM MDT | Tornado Warning | BYZ | Yellowstone | 33 min |
| Aug 20, 5:13 PM MDT | Flash Flood Warning | TFX | Cascade, Chouteau, Judith Basin | 62 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 20, 11:52 PM MDT | Flash Flood Warning | MSO | Lewis and Clark | 2 hr |
| 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 product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 75 |
| Tornado Warning | 14 |
| Flooding | |
| Flash Flood Warning | 12 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Yellowstone County11
- Musselshell County11
- Rosebud County10
- Cascade County8
- Big Horn County7
- Golden Valley County6
- Roosevelt County6
- Garfield County6
- McCone County6
- Lewis and Clark County6
- Blaine County5
- Wheatland County4
- Treasure County4
- Fallon County4
- Richland County4
- Sheridan County4
- Valley County4
- Phillips County4
- Powder River County3
- Carter County3
- Custer County3
- Hill County3
- Stillwater County3
- Dawson County3
- Chouteau County3
- Carbon County2
- Petroleum County2
- Prairie County2
- Wibaux County2
- Broadwater County2
- Meagher County2
- Teton County2
- Flathead County2
- Judith Basin County2
- Sweet Grass County2
- Mineral County1
- Sanders County1
- Madison County1
- Fergus 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. Rebuilt daily.