Weather alerts in Montana, December 2021

162 weather alerts in December 2021, 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 December 2021. Tap one for its archive.

Alerts: 162
Warnings: 30
Watches: 16
Advisories: 78
Busiest day: December 24, 202116 alerts

Over time

By day

Days in UTC, the clock the archive keeps.

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
Dec 1, 3:42 AM MST	Red Flag Warning	TFX	Blaine, Cascade, Chouteau, Fergus, Glacier, Hill and 8 more	17 hr
Dec 1, 7:41 AM MST	Wind Advisory	MSO	Deer Lodge, Granite, Powell, Silver Bow	9 hr
Dec 1, 8:42 AM MST	Lake Wind Advisory	GGW	Garfield, McCone, Petroleum, Phillips, Valley	8 hr
Dec 1, 10:24 PM MST	Red Flag Warning	TFX	Glacier, Lewis and Clark, Liberty, Pondera, Teton, Toole	16 hr
Dec 2, 1:05 PM MST	Winter Storm Watch	GGW	Daniels, Phillips, Roosevelt, Sheridan, Valley	14 hr
Dec 2, 1:48 PM MST	High Wind Watch	TFX		24 hr
Dec 2, 2:02 PM MST	Winter Storm Watch	TFX		23 hr
Dec 3, 1:58 AM MST	Winter Weather Advisory	TFX		60 hr
Dec 3, 2:56 AM MST	Winter Storm Warning	GGW	Daniels, Phillips, Roosevelt, Sheridan, Valley	48 hr
Dec 3, 2:56 AM MST	Winter Weather Advisory	GGW	Dawson, Garfield, McCone, Petroleum, Phillips, Richland and 1 more	48 hr
Dec 3, 1:25 PM MST	Winter Weather Advisory	MSO	Deer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more	46 hr
Dec 3, 1:29 PM MST	Wind Advisory	MSO	Deer Lodge, Granite, Missoula, Powell, Ravalli, Silver Bow	30 hr
Dec 3, 1:29 PM MST	High Wind Warning	TFX		31 hr
Dec 3, 1:53 PM MST	Wind Advisory	BYZ	Park, Stillwater, Sweet Grass	31 hr
Dec 4, 2:08 AM MST	High Wind Warning	BYZ	Sweet Grass	23 hr
Dec 4, 1:46 PM MST	Mesoscale Discussion	SPC	Dawson, McCone, Phillips, Richland, Roosevelt, Valley	2 hr
Dec 4, 1:55 PM MST	Winter Weather Advisory	BYZ	Big Horn, Carbon, Stillwater, Sweet Grass	22 hr
Dec 4, 3:56 PM MST	Special Weather Statement	BYZ	Carbon	6 hr
Dec 5, 3:06 AM MST	Wind Chill Advisory	GGW	Daniels, Phillips, Richland, Roosevelt, Sheridan, Valley	35 hr
Dec 5, 4:05 AM MST	Special Weather Statement	MSO	Missoula	25 min
Dec 5, 5:45 AM MST	Special Weather Statement	BYZ	Stillwater, Sweet Grass	2 hr
Dec 5, 10:14 AM MST	Winter Weather Advisory	GGW	Daniels, Phillips, Roosevelt, Sheridan, Valley	4 hr
Dec 5, 1:46 PM MST	Winter Weather Advisory	GGW	Daniels, Roosevelt, Sheridan	4 hr
Dec 5, 3:03 PM MST	Winter Weather Advisory	MSO	Deer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more	42 hr
Dec 5, 4:39 PM MST	Special Weather Statement	BYZ	Stillwater	3 hr
Dec 5, 7:24 PM MST	Winter Weather Advisory	TFX		25 hr
Dec 6, 1:18 AM MST	Winter Weather Advisory	BYZ	Big Horn, Carbon, Golden Valley, Musselshell, Park, Rosebud and 5 more	32 hr
Dec 6, 2:55 AM MST	High Wind Watch	TFX		23 hr
Dec 6, 2:37 PM MST	Special Weather Statement	BYZ	Sweet Grass	83 min
Dec 7, 1:41 AM MST	Wind Advisory	BYZ	Park, Stillwater, Sweet Grass	40 hr
Dec 7, 2:22 AM MST	High Wind Warning	TFX		40 hr
Dec 7, 6:21 AM MST	Winter Weather Advisory	MSO	Flathead, Lake, Lincoln, Sanders	4 hr
Dec 7, 2:56 PM MST	Winter Weather Advisory	MSO	Flathead, Lake, Lincoln, Mineral, Missoula, Sanders	20 hr
Dec 7, 9:13 PM MST	High Wind Warning	BYZ	Sweet Grass	21 hr
Dec 9, 2:31 AM MST	High Wind Watch	TFX		34 hr
Dec 9, 3:12 AM MST	Winter Weather Advisory	MSO	Granite, Lake, Mineral, Missoula, Powell, Ravalli and 1 more	30 hr
Dec 9, 1:39 PM MST	High Wind Warning	TFX		3 days
Dec 9, 1:45 PM MST	Winter Storm Watch	MSO	Flathead, Lake, Lincoln, Mineral, Missoula, Sanders	25 hr
Dec 9, 1:57 PM MST	Winter Storm Watch	TFX		12 hr
Dec 9, 2:14 PM MST	Wind Advisory	BYZ	Park, Stillwater, Sweet Grass	41 hr
Dec 10, 1:46 AM MST	High Wind Watch	BYZ	Golden Valley, Sweet Grass, Wheatland	12 hr
Dec 10, 2:19 AM MST	Winter Storm Warning	TFX		15 hr
Dec 10, 4:52 AM MST	Special Weather Statement	MSO	Missoula	53 min
Dec 10, 6:26 AM MST	Special Weather Statement	MSO	Powell	49 min
Dec 10, 2:04 PM MST	High Wind Warning	BYZ	Golden Valley, Park, Stillwater, Sweet Grass, Wheatland	51 hr
Dec 10, 3:01 PM MST	Winter Storm Warning	MSO	Flathead, Granite, Lake, Lincoln, Mineral, Missoula and 2 more	53 hr
Dec 10, 3:01 PM MST	Winter Weather Advisory	MSO	Deer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more	65 hr
Dec 10, 5:28 PM MST	Blizzard Warning	TFX		26 hr
Dec 11, 1:44 PM MST	Winter Weather Advisory	MSO	Mineral, Missoula, Sanders	42 hr
Dec 11, 1:52 PM MST	Winter Weather Advisory	TFX		4 days
Dec 11, 7:10 PM MST	Winter Storm Warning	TFX		16 hr
Dec 13, 12:30 AM MST	Winter Weather Advisory	MSO	Deer Lodge, Granite, Powell, Silver Bow	8 hr
Dec 13, 7:51 AM MST	Wind Advisory	BYZ	Park, Stillwater, Sweet Grass	31 hr
Dec 13, 8:42 AM MST	Special Weather Statement	MSO	Mineral, Missoula	48 min
Dec 13, 9:26 AM MST	Special Weather Statement	MSO	Lake, Mineral	49 min
Dec 13, 1:51 PM MST	Winter Weather Advisory	MSO	Deer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more	32 hr
Dec 13, 1:58 PM MST	Winter Storm Warning	TFX		39 hr
Dec 13, 2:37 PM MST	Winter Weather Advisory	BYZ	Big Horn, Carbon, Carter, Custer, Fallon, Golden Valley and 9 more	50 hr
Dec 14, 7:40 AM MST	Winter Storm Warning	MSO	Deer Lodge, Granite, Powell, Silver Bow	14 hr
Dec 14, 11:19 AM MST	Winter Weather Advisory	GGW	Dawson, McCone, Prairie, Richland, Roosevelt, Sheridan and 1 more	29 hr
Dec 14, 11:38 AM MST	Winter Weather Advisory	MSO	Granite, Lake, Missoula, Powell	9 hr
Dec 14, 2:55 PM MST	Special Weather Statement	MSO	Silver Bow	65 min
Dec 14, 3:48 PM MST	Special Weather Statement	TFX	Jefferson	57 min
Dec 14, 4:05 PM MST	Special Weather Statement	MSO	Lake	55 min
Dec 14, 4:36 PM MST	Winter Weather Advisory	MSO	Flathead, Lake, Sanders	4 hr
Dec 14, 4:47 PM MST	Winter Weather Advisory	MSO	Missoula, Ravalli	4 hr
Dec 14, 5:41 PM MST	Special Weather Statement	TFX	Chouteau	64 min
Dec 15, 7:53 AM MST	Winter Weather Advisory	TFX		67 min
Dec 15, 12:41 PM MST	Wind Chill Advisory	GGW	Daniels, Sheridan, Valley	20 hr
Dec 15, 1:21 PM MST	Wind Chill Advisory	TFX		62 hr
Dec 15, 1:21 PM MST	Winter Weather Advisory	TFX		44 hr
Dec 15, 2:11 PM MST	Wind Chill Advisory	BYZ	Custer, Fallon, Golden Valley, Musselshell, Rosebud, Wheatland	55 hr
Dec 15, 2:40 PM MST	Winter Weather Advisory	MSO	Deer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more	44 hr
Dec 16, 5:08 AM MST	Dense Fog Advisory	BYZ	Custer, Rosebud	4 hr
Dec 16, 1:12 PM MST	Special Weather Statement	MSO	Flathead	48 min
Dec 16, 1:31 PM MST	Wind Chill Advisory	GGW	Daniels, Dawson, Garfield, McCone, Petroleum, Phillips and 6 more	45 hr
Dec 16, 1:31 PM MST	Winter Weather Advisory	GGW	Daniels, Roosevelt, Sheridan, Valley	27 hr
Dec 17, 3:09 AM MST	Wind Chill Advisory	GGW	Garfield	32 hr
Dec 17, 11:59 AM MST	Winter Weather Advisory	BYZ	Park, Stillwater, Sweet Grass	27 hr
Dec 17, 1:20 PM MST	Winter Storm Watch	MSO	Flathead, Lincoln, Mineral, Missoula, Sanders	25 hr
Dec 17, 1:20 PM MST	Winter Storm Warning	MSO	Deer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more	64 hr
Dec 17, 1:54 PM MST	High Wind Watch	TFX		13 hr
Dec 17, 1:54 PM MST	Winter Storm Watch	TFX		13 hr
Dec 18, 3:08 AM MST	Winter Storm Warning	TFX		35 hr
Dec 18, 3:09 AM MST	High Wind Warning	TFX		24 hr
Dec 18, 7:44 AM MST	Winter Weather Advisory	MSO	Flathead, Granite, Lake, Missoula, Powell, Ravalli and 1 more	21 hr
Dec 18, 12:59 PM MST	Winter Weather Advisory	TFX		38 hr
Dec 18, 2:38 PM MST	Winter Storm Watch	MSO	Deer Lodge, Granite, Lake, Missoula, Powell, Ravalli and 1 more	5 hr
Dec 18, 2:38 PM MST	Winter Weather Advisory	MSO	Deer Lodge, Flathead, Granite, Lake, Mineral, Missoula and 4 more	59 hr
Dec 18, 2:40 PM MST	High Wind Warning	BYZ	Park, Stillwater, Sweet Grass, Wheatland	25 hr
Dec 18, 2:41 PM MST	Winter Weather Advisory	BYZ	Big Horn, Golden Valley, Musselshell, Park, Rosebud, Stillwater and 4 more	44 hr
Dec 18, 2:42 PM MST	Winter Weather Advisory	GGW	Petroleum	38 hr
Dec 19, 8:48 AM MST	Special Weather Statement	MSO	Flathead	72 min
Dec 19, 9:52 AM MST	Wind Chill Advisory	GGW	Daniels, Phillips, Sheridan, Valley	23 hr
Dec 20, 2:30 AM MST	Wind Advisory	BYZ	Park, Stillwater, Sweet Grass	4 days
Dec 20, 2:30 AM MST	Winter Weather Advisory	TFX		36 hr
Dec 20, 7:33 AM MST	Winter Storm Warning	MSO	Missoula, Ravalli	3 hr
Dec 20, 7:33 AM MST	Winter Weather Advisory	MSO	Missoula, Ravalli	18 hr
Dec 20, 8:58 AM MST	Winter Weather Advisory	GGW	Richland, Roosevelt	18 hr
Dec 20, 2:44 PM MST	Winter Weather Advisory	BYZ	Golden Valley, Sweet Grass, Wheatland	12 hr
Dec 20, 11:36 PM MST	Special Weather Statement	BYZ	Yellowstone	54 min
Dec 21, 3:29 PM MST	Winter Storm Watch	BYZ	Carbon, Park, Stillwater, Sweet Grass	22 hr
Dec 22, 1:35 AM MST	Winter Weather Advisory	MSO	Flathead, Lake, Lincoln, Mineral, Missoula, Sanders	9 hr
Dec 22, 2:09 AM MST	Dense Fog Advisory	MSO	Missoula, Ravalli	7 hr
Dec 22, 1:28 PM MST	Winter Weather Advisory	MSO	Deer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more	22 hr
Dec 22, 1:52 PM MST	Winter Storm Warning	BYZ	Carbon, Park, Stillwater, Sweet Grass	54 hr
Dec 22, 1:56 PM MST	Winter Weather Advisory	TFX		3 days
Dec 23, 8:01 AM MST	Special Weather Statement	MSO	Granite	44 min
Dec 23, 8:46 AM MST	Special Weather Statement	MSO	Powell	44 min
Dec 23, 11:53 AM MST	Winter Weather Advisory	MSO	Deer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more	47 hr
Dec 23, 3:29 PM MST	Special Weather Statement	MSO	Missoula	61 min
Dec 23, 3:57 PM MST	Special Weather Statement	MSO	Ravalli	63 min
Dec 23, 4:12 PM MST	Special Weather Statement	MSO	Powell	93 min
Dec 23, 4:52 PM MST	Special Weather Statement	MSO	Deer Lodge, Silver Bow	83 min
Dec 23, 6:11 PM MST	Severe Thunderstorm Warning	TFX	Cascade, Chouteau	34 min
Dec 23, 6:34 PM MST	Snow Squall Warning	TFX	Cascade, Chouteau, Hill, Judith Basin	56 min
Dec 23, 6:50 PM MST	Severe Thunderstorm Warning	TFX	Cascade, Chouteau, Fergus, Hill, Judith Basin	40 min
Dec 23, 7:30 PM MST	Severe Thunderstorm Warning	TFX	Blaine, Chouteau, Fergus, Judith Basin	60 min
Dec 23, 7:47 PM MST	Special Weather Statement	BYZ	Wheatland	58 min
Dec 23, 8:06 PM MST	Special Weather Statement	GGW	Phillips	54 min
Dec 23, 8:14 PM MST	Special Weather Statement	GGW	Petroleum	61 min
Dec 23, 9:17 PM MST	Special Weather Statement	GGW	Valley	58 min
Dec 23, 10:16 PM MST	Special Weather Statement	GGW	Daniels, Dawson, McCone, Prairie, Richland, Roosevelt and 2 more	59 min
Dec 24, 1:58 AM MST	Winter Storm Watch	TFX		12 hr
Dec 24, 2:52 AM MST	Winter Storm Watch	MSO	Flathead, Lake	10 hr
Dec 24, 2:52 AM MST	Winter Weather Advisory	MSO	Flathead, Lincoln, Sanders	32 hr
Dec 24, 12:32 PM MST	Winter Storm Watch	MSO	Deer Lodge, Flathead, Granite, Lake, Lincoln, Powell and 2 more	24 hr
Dec 24, 12:32 PM MST	Winter Storm Warning	MSO	Flathead, Lake	22 hr
Dec 24, 12:49 PM MST	Special Weather Statement	BYZ	Yellowstone	56 min
Dec 24, 1:27 PM MST	Wind Chill Advisory	GGW	Daniels, Phillips, Roosevelt, Sheridan, Valley	20 hr
Dec 24, 8:39 PM MST	Snow Squall Warning	MSO	Mineral	81 min
Dec 25, 6:59 AM MST	Wind Chill Advisory	TFX		5 days
Dec 25, 8:23 AM MST	Special Weather Statement	MSO	Missoula	52 min
Dec 25, 8:46 AM MST	Special Weather Statement	BYZ	Big Horn	59 min
Dec 25, 11:00 AM MST	Wind Chill Advisory	MSO	Flathead, Lake	7 hr
Dec 25, 11:00 AM MST	Winter Weather Advisory	MSO	Flathead, Lake	6 hr
Dec 25, 12:43 PM MST	Winter Weather Advisory	MSO	Deer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more	28 hr
Dec 25, 1:02 PM MST	Wind Chill Advisory	GGW	Daniels, Garfield, McCone, Phillips, Richland, Roosevelt and 2 more	19 hr
Dec 25, 1:02 PM MST	Winter Weather Advisory	GGW	Daniels, Dawson, Garfield, McCone, Petroleum, Phillips and 6 more	33 hr
Dec 25, 1:43 PM MST	Wind Chill Warning	TFX		5 days
Dec 25, 2:11 PM MST	Winter Weather Advisory	TFX		27 hr
Dec 25, 5:48 PM MST	Wind Chill Warning	MSO	Flathead, Lake	35 hr
Dec 26, 4:06 AM MST	Winter Weather Advisory	BYZ	Big Horn, Carbon, Carter, Custer, Fallon, Golden Valley and 9 more	17 hr
Dec 26, 4:59 AM MST	Special Weather Statement	BYZ	Big Horn, Carbon, Golden Valley, Musselshell, Stillwater, Sweet Grass and 2 more	3 hr
Dec 26, 8:00 AM MST	Special Weather Statement	BYZ	Big Horn, Carbon, Golden Valley, Stillwater, Sweet Grass, Wheatland and 1 more	90 min
Dec 26, 10:52 AM MST	Special Weather Statement	MSO	Missoula	38 min
Dec 26, 1:19 PM MST	Special Weather Statement	TFX	Glacier, Lewis and Clark, Teton	41 min
Dec 26, 2:02 PM MST	Special Weather Statement	TFX	Lewis and Clark, Pondera, Teton	43 min
Dec 26, 2:13 PM MST	Wind Chill Warning	GGW	Daniels, Dawson, McCone, Phillips, Richland, Roosevelt and 3 more	6 days
Dec 26, 2:13 PM MST	Wind Chill Advisory	GGW	Dawson, Garfield, McCone, Petroleum, Phillips, Prairie and 3 more	7 days
Dec 26, 2:59 PM MST	Special Weather Statement	TFX	Cascade, Pondera, Teton, Toole	46 min
Dec 26, 6:39 PM MST	Wind Chill Advisory	BYZ	Big Horn, Carbon, Carter, Custer, Fallon, Golden Valley and 8 more	41 hr
Dec 27, 12:21 PM MST	Special Weather Statement	BYZ	Big Horn, Carbon, Custer, Rosebud, Stillwater, Treasure and 1 more	69 min
Dec 28, 1:40 PM MST	Wind Chill Advisory	MSO	Flathead, Lake	21 hr
Dec 28, 1:40 PM MST	Winter Weather Advisory	MSO	Deer Lodge, Flathead, Granite, Lake, Mineral, Missoula and 4 more	21 hr
Dec 28, 2:27 PM MST	Wind Chill Advisory	BYZ	Carter, Custer, Fallon, Golden Valley, Musselshell, Powder River and 2 more	23 hr
Dec 29, 9:58 AM MST	Winter Weather Advisory	TFX		25 hr
Dec 29, 1:25 PM MST	Winter Weather Advisory	MSO	Deer Lodge, Flathead, Granite, Lake, Mineral, Missoula and 4 more	46 hr
Dec 30, 2:47 AM MST	Winter Weather Advisory	BYZ	Golden Valley, Musselshell, Park, Stillwater, Sweet Grass, Wheatland	32 hr
Dec 30, 12:30 PM MST	Wind Chill Advisory	BYZ	Carter, Custer, Fallon, Powder River, Rosebud	22 hr
Dec 30, 12:30 PM MST	Winter Weather Advisory	BYZ	Big Horn, Carbon, Golden Valley, Park, Rosebud, Stillwater and 4 more	27 hr
Dec 30, 2:01 PM MST	Wind Chill Advisory	TFX		45 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	3
Mesoscale Discussion	1
Special Weather Statement	37
Winter
Blizzard Warning	1
Snow Squall Warning	2
Winter Storm Warning	11
Winter Storm Watch	11
Winter Weather Advisory	51
Cold
Wind Chill Warning	3
Wind Chill Advisory	17
Wind and dust
High Wind Warning	8
High Wind Watch	5
Lake Wind Advisory	1
Wind Advisory	7
Fire
Red Flag Warning	2
Fog and smoke
Dense Fog Advisory	2

By county

Every county with at least one alert. A county page lists each alert that covered it.

12 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2020 2022

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.