Alert archive / Montana / Winter Storm Warnings
Winter Storm Warnings in Montana, 2011
75 winter storm warnings in 2011. 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 winter storm warnings reaches back to 2005.
Winter Storm Warnings by county
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Winter Storm Warnings
- 75
- Busiest month
- February18 winter storm warnings
- Busiest day
- February 6, 20114 winter storm 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 |
|---|---|---|---|---|
| Jan 2, 3:22 PM MST | Winter Storm Warning | TFX | 12 hr | |
| Jan 7, 9:17 PM MST | Winter Storm Warning | GGW | Daniels, Garfield, McCone, Roosevelt, Valley | 30 hr |
| Jan 11, 3:58 AM MST | Winter Storm Warning | MSO | Flathead, Granite, Lake, Lincoln, Mineral, Missoula and 2 more | 61 hr |
| Jan 11, 10:35 AM MST | Winter Storm Warning | TFX | 52 hr | |
| Jan 18, 4:09 AM MST | Winter Storm Warning | BYZ | Carbon, Park, Stillwater, Sweet Grass | 32 hr |
| Jan 21, 3:29 AM MST | Winter Storm Warning | MSO | Flathead, Granite, Lake, Missoula, Ravalli | 29 hr |
| Jan 21, 1:58 PM MST | Winter Storm Warning | TFX | 13 hr | |
| Jan 22, 9:40 AM MST | Winter Storm Warning | TFX | 5 hr | |
| Jan 29, 2:45 AM MST | Winter Storm Warning | MSO | Flathead, Granite, Lake, Missoula, Powell, Sanders | 38 hr |
| Jan 29, 8:00 AM MST | Winter Storm Warning | TFX | 29 hr | |
| Feb 4, 2:51 PM MST | Winter Storm Warning | BYZ | Carbon, Park, Stillwater, Sweet Grass | 24 hr |
| Feb 5, 9:05 AM MST | Winter Storm Warning | TFX | 24 hr | |
| Feb 6, 4:13 AM MST | Winter Storm Warning | MSO | Flathead, Granite, Lake, Missoula, Powell, Ravalli and 1 more | 53 hr |
| Feb 6, 4:31 AM MST | Winter Storm Warning | TFX | 47 hr | |
| Feb 6, 3:08 PM MST | Winter Storm Warning | BYZ | Big Horn, Carbon, Golden Valley, Musselshell, Park, Rosebud and 4 more | 33 hr |
| Feb 6, 3:21 PM MST | Winter Storm Warning | GGW | Petroleum, Phillips | 26 hr |
| Feb 14, 1:53 PM MST | Winter Storm Warning | MSO | Granite, Mineral, Missoula, Ravalli, Sanders | 57 hr |
| Feb 15, 2:24 PM MST | Winter Storm Warning | MSO | Granite, Missoula, Ravalli | 39 hr |
| Feb 16, 7:59 AM MST | Winter Storm Warning | TFX | 20 hr | |
| Feb 17, 5:10 AM MST | Winter Storm Warning | GGW | Daniels, Dawson, McCone, Richland, Roosevelt, Sheridan and 2 more | 14 hr |
| Feb 17, 7:55 AM MST | Winter Storm Warning | TFX | 5 hr | |
| Feb 19, 3:47 AM MST | Winter Storm Warning | BYZ | Big Horn, Carter, Custer, Fallon, Powder River, Rosebud and 1 more | 38 hr |
| Feb 19, 4:14 AM MST | Winter Storm Warning | TFX | 32 hr | |
| Feb 19, 2:30 PM MST | Winter Storm Warning | GGW | Dawson, McCone, Prairie, Wibaux | 27 hr |
| Feb 21, 2:36 PM MST | Winter Storm Warning | MSO | Deer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more | 72 hr |
| Feb 22, 2:10 PM MST | Winter Storm Warning | TFX | 49 hr | |
| Feb 26, 1:58 PM MST | Winter Storm Warning | MSO | Flathead, Granite, Lake, Lincoln, Mineral, Missoula and 2 more | 3 days |
| Feb 26, 7:52 PM MST | Winter Storm Warning | TFX | 69 hr | |
| Mar 14, 3:06 AM MDT | Winter Storm Warning | MSO | Granite, Missoula, Ravalli | 5 hr |
| Mar 16, 3:59 AM MDT | Winter Storm Warning | BYZ | Carbon, Park, Stillwater, Sweet Grass | 23 hr |
| Mar 21, 5:27 AM MDT | Winter Storm Warning | TFX | 52 hr | |
| Mar 21, 11:50 AM MDT | Winter Storm Warning | MSO | Deer Lodge, Granite, Powell, Silver Bow | 24 hr |
| Mar 22, 6:25 AM MDT | Winter Storm Warning | BYZ | Carbon, Golden Valley, Park, Stillwater, Sweet Grass, Wheatland | 23 hr |
| Mar 22, 10:17 AM MDT | Winter Storm Warning | GGW | Daniels, Phillips, Roosevelt, Sheridan, Valley | 28 hr |
| Mar 25, 3:22 PM MDT | Winter Storm Warning | BYZ | Carter, Powder River, Rosebud | 21 hr |
| Mar 29, 3:17 PM MDT | Winter Storm Warning | BYZ | Carbon, Park, Stillwater, Sweet Grass, Wheatland | 60 hr |
| Mar 30, 4:44 AM MDT | Winter Storm Warning | TFX | 37 hr | |
| Apr 1, 2:01 PM MDT | Winter Storm Warning | TFX | 49 hr | |
| Apr 2, 3:26 AM MDT | Winter Storm Warning | GGW | Daniels, Sheridan, Valley | 34 hr |
| Apr 5, 2:55 AM MDT | Winter Storm Warning | BYZ | Carbon, Park, Stillwater, Sweet Grass | 18 hr |
| Apr 5, 7:59 AM MDT | Winter Storm Warning | TFX | 7 hr | |
| Apr 6, 2:15 PM MDT | Winter Storm Warning | TFX | 52 hr | |
| Apr 6, 3:40 PM MDT | Winter Storm Warning | BYZ | Carbon, Golden Valley, Park, Stillwater, Sweet Grass, Wheatland | 53 hr |
| Apr 13, 5:22 AM MDT | Winter Storm Warning | TFX | 23 hr | |
| Apr 17, 5:54 AM MDT | Winter Storm Warning | TFX | 30 hr | |
| Apr 17, 11:32 AM MDT | Winter Storm Warning | MSO | Flathead, Lake | 12 hr |
| Apr 18, 4:34 AM MDT | Winter Storm Warning | BYZ | Carbon, Golden Valley, Musselshell, Park, Stillwater, Sweet Grass and 1 more | 35 hr |
| Apr 18, 4:38 AM MDT | Winter Storm Warning | TFX | 37 hr | |
| Apr 21, 3:28 AM MDT | Winter Storm Warning | BYZ | Carbon, Golden Valley, Park, Stillwater, Sweet Grass, Wheatland | 38 hr |
| Apr 21, 4:56 AM MDT | Winter Storm Warning | TFX | 37 hr | |
| Apr 21, 2:03 PM MDT | Winter Storm Warning | MSO | Flathead, Lake | 18 hr |
| Apr 22, 4:07 AM MDT | Winter Storm Warning | GGW | Petroleum, Wibaux | 16 hr |
| Apr 28, 3:00 PM MDT | Winter Storm Warning | TFX | 39 hr | |
| May 8, 3:40 AM MDT | Winter Storm Warning | BYZ | Carbon, Park, Stillwater, Sweet Grass, Wheatland | 62 hr |
| May 8, 4:17 AM MDT | Winter Storm Warning | TFX | 51 hr | |
| May 8, 1:58 PM MDT | Winter Storm Warning | MSO | Deer Lodge, Granite, Powell, Silver Bow | 22 hr |
| May 19, 3:14 AM MDT | Winter Storm Warning | BYZ | Carbon, Park, Stillwater, Sweet Grass | 3 days |
| May 29, 3:49 AM MDT | Winter Storm Warning | BYZ | Carbon, Park, Stillwater, Sweet Grass, Wheatland | 40 hr |
| May 29, 4:24 AM MDT | Winter Storm Warning | TFX | 44 hr | |
| Nov 5, 3:41 AM MDT | Winter Storm Warning | GGW | Daniels, Dawson, McCone, Prairie, Richland, Roosevelt and 2 more | 24 hr |
| Nov 10, 12:24 PM MST | Winter Storm Warning | MSO | Flathead, Granite, Lake, Mineral, Missoula, Powell and 2 more | 45 hr |
| Nov 14, 1:12 AM MST | Winter Storm Warning | TFX | 16 hr | |
| Nov 16, 3:54 AM MST | Winter Storm Warning | MSO | Flathead, Granite, Lake, Lincoln, Mineral, Missoula and 3 more | 43 hr |
| Nov 16, 1:46 PM MST | Winter Storm Warning | TFX | 67 hr | |
| Nov 17, 3:46 AM MST | Winter Storm Warning | BYZ | Carbon, Carter, Park, Powder River, Rosebud, Stillwater and 1 more | 49 hr |
| Nov 18, 8:31 AM MST | Winter Storm Warning | MSO | Flathead, Granite, Lake, Lincoln, Mineral, Missoula and 3 more | 20 hr |
| Nov 21, 3:42 AM MST | Winter Storm Warning | MSO | Flathead, Granite, Lake, Lincoln, Mineral, Missoula and 2 more | 7 hr |
| Nov 29, 4:14 AM MST | Winter Storm Warning | TFX | 43 hr | |
| Nov 29, 4:38 AM MST | Winter Storm Warning | MSO | Flathead, Granite, Lake, Mineral, Missoula, Powell and 2 more | 36 hr |
| Nov 30, 4:19 AM MST | Winter Storm Warning | BYZ | Carbon, Golden Valley, Park, Stillwater, Sweet Grass, Wheatland | 26 hr |
| Dec 3, 10:02 AM MST | Winter Storm Warning | TFX | 31 hr | |
| Dec 20, 2:45 PM MST | Winter Storm Warning | TFX | 28 hr | |
| Dec 20, 3:47 PM MST | Winter Storm Warning | BYZ | Carbon, Park, Stillwater, Sweet Grass | 29 hr |
| Dec 29, 10:14 PM MST | Winter Storm Warning | MSO | Flathead, Lake | 29 hr |
| Dec 30, 3:36 AM MST | Winter Storm Warning | BYZ | Carbon, Park, Stillwater, Sweet Grass | 30 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Carbon County17
- Park County17
- Stillwater County17
- Sweet Grass County17
- Granite County16
- Flathead County14
- Lake County14
- Missoula County14
- Ravalli County13
- Sanders County11
- Mineral County9
- Powell County9
- Wheatland County9
- Lincoln County6
- Golden Valley County6
- Daniels County5
- McCone County4
- Roosevelt County4
- Valley County4
- Rosebud County4
- Sheridan County4
- Wibaux County4
- Dawson County3
- Carter County3
- Powder River County3
- Deer Lodge County3
- Silver Bow County3
- Big Horn County2
- Musselshell County2
- Treasure County2
- Petroleum County2
- Phillips County2
- Richland County2
- Prairie County2
- Garfield County1
- Custer County1
- Fallon County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.