Weather alerts in Montana, 1989
55 weather alerts in 1989, 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 1989. Tap one for its archive.
- Alerts
- 55
- Warnings
- 55
- Watches
- 0
- Advisories
- 0
- Busiest month
- July23 alerts
- Busiest day
- May 10, 19896 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 9, 11:59 PM MDT | Severe Thunderstorm Warning | MSO | Missoula, Ravalli | 61 min |
| May 10, 12:03 PM MDT | Severe Thunderstorm Warning | MSO | Jefferson, Silver Bow | 57 min |
| May 10, 12:49 PM MDT | Severe Thunderstorm Warning | MSO | Jefferson, Lewis and Clark | 116 min |
| May 10, 1:43 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 62 min |
| May 10, 2:26 PM MDT | Severe Thunderstorm Warning | MSO | Missoula | 64 min |
| May 10, 5:22 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton | 68 min |
| May 10, 6:25 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Yellowstone | 65 min |
| May 11, 4:58 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon, Stillwater | 62 min |
| May 11, 5:39 PM MDT | Severe Thunderstorm Warning | BYZ | Stillwater, Yellowstone | 66 min |
| May 11, 6:47 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell, Yellowstone | 58 min |
| May 11, 7:14 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Rosebud | 61 min |
| May 11, 7:49 PM MDT | Severe Thunderstorm Warning | BYZ | Treasure, Yellowstone | 56 min |
| May 11, 7:49 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 56 min |
| May 11, 8:13 PM MDT | Tornado Warning | BYZ | Custer | 62 min |
| May 11, 9:02 PM MDT | Tornado Warning | BYZ | Prairie | 58 min |
| Jun 15, 5:13 PM MDT | Tornado Warning | TFX | Cascade | 62 min |
| Jun 16, 4:10 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 65 min |
| Jun 16, 5:05 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 70 min |
| Jun 16, 6:24 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 66 min |
| Jun 19, 5:00 PM MDT | Severe Thunderstorm Warning | TFX | Phillips | 2 hr |
| Jun 23, 7:22 PM MDT | Flash Flood Warning | BYZ | Fallon | 68 min |
| Jun 23, 7:22 PM MDT | Tornado Warning | BYZ | Fallon | 68 min |
| Jun 30, 8:40 PM MDT | Severe Thunderstorm Warning | MSO | Mineral | 65 min |
| Jun 30, 9:28 PM MDT | Severe Thunderstorm Warning | MSO | Lake, Sanders | 2 hr |
| Jun 30, 10:18 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 117 min |
| Jul 10, 7:46 PM MDT | Severe Thunderstorm Warning | TFX | Liberty | 59 min |
| Jul 15, 4:22 PM MDT | Severe Thunderstorm Warning | MSO | Lake, Missoula | 2 hr |
| Jul 15, 4:29 PM MDT | Severe Thunderstorm Warning | MSO | Ravalli | 2 hr |
| Jul 15, 4:56 PM MDT | Severe Thunderstorm Warning | MSO | Missoula | 2 hr |
| Jul 15, 6:08 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 67 min |
| Jul 15, 6:57 PM MDT | Severe Thunderstorm Warning | MSO | Broadwater, Jefferson, Lewis and Clark | 63 min |
| Jul 15, 7:07 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton | 68 min |
| Jul 15, 7:55 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 65 min |
| Jul 20, 7:22 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Teton | 38 min |
| Jul 20, 8:00 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 60 min |
| Jul 20, 9:05 PM MDT | Severe Thunderstorm Warning | TFX | Hill | 55 min |
| Jul 20, 9:13 PM MDT | Severe Thunderstorm Warning | TFX | Blaine | 62 min |
| Jul 23, 5:00 PM MDT | Severe Thunderstorm Warning | MSO | Lewis and Clark | 30 min |
| Jul 26, 8:50 PM MDT | Severe Thunderstorm Warning | MSO | Cascade, Lewis and Clark | 55 min |
| Jul 26, 9:20 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 55 min |
| Jul 27, 5:03 PM MDT | Severe Thunderstorm Warning | MSO | Lake, Missoula | 57 min |
| Jul 27, 5:03 PM MDT | Severe Thunderstorm Warning | MSO | Mineral | 57 min |
| Jul 30, 4:41 PM MDT | Severe Thunderstorm Warning | MSO | Broadwater, Jefferson, Lewis and Clark, Meagher, Powell | 94 min |
| Jul 30, 6:01 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 56 min |
| Jul 30, 7:35 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 55 min |
| Aug 2, 6:00 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 90 min |
| Aug 24, 7:00 PM MDT | Flash Flood Warning | BYZ | Rosebud, Treasure | 60 min |
| Aug 24, 7:00 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud, Treasure | 60 min |
| Aug 30, 6:00 PM MDT | Severe Thunderstorm Warning | BYZ | Dawson, McCone, Richland | 2 hr |
| Aug 30, 6:54 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Musselshell | 66 min |
| Aug 30, 7:38 PM MDT | Severe Thunderstorm Warning | BYZ | Fallon | 97 min |
| Aug 30, 7:53 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell, Yellowstone | 97 min |
| Sep 2, 5:12 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 108 min |
| Sep 2, 6:00 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 90 min |
| Sep 2, 7:20 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt | 70 min |
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 | 49 |
| Tornado Warning | 4 |
| Flooding | |
| Flash Flood Warning | 2 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Cascade County7
- Missoula County5
- Lewis and Clark County5
- Yellowstone County5
- Jefferson County4
- Musselshell County4
- Teton County3
- Rosebud County3
- Treasure County3
- Fallon County3
- Lake County3
- Sheridan County3
- Ravalli County2
- Pondera County2
- Stillwater County2
- Custer County2
- Carter County2
- Mineral County2
- Flathead County2
- Broadwater County2
- Chouteau County2
- Silver Bow County1
- Big Horn County1
- Carbon County1
- Prairie County1
- Powder River County1
- Phillips County1
- Sanders County1
- Liberty County1
- Hill County1
- Blaine County1
- Meagher County1
- Powell County1
- Fergus County1
- Dawson County1
- McCone County1
- Richland County1
- Golden Valley County1
- Roosevelt County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19881990
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.