Weather alerts in Colorado, December 2025

74 weather alerts in December 2025, 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 2025. Tap one for its archive.

Alerts: 74
Warnings: 29
Watches: 18
Advisories: 25
Busiest day: December 4, 202512 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
Nov 30, 5:14 PM MST	Special Weather Statement	PUB	El Paso	61 min
Dec 1, 1:52 PM MST	Winter Weather Advisory	BOU	Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 7 more	54 hr
Dec 2, 2:25 AM MST	Winter Weather Advisory	PUB	Alamosa, Chaffee, Conejos, Costilla, Custer, El Paso and 9 more	48 hr
Dec 2, 2:26 AM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 11 more	51 hr
Dec 2, 2:07 PM MST	Winter Storm Warning	PUB	Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 6 more	36 hr
Dec 3, 12:40 AM MST	Winter Weather Advisory	PUB	Chaffee, Lake, Rio Grande, Saguache	6 min
Dec 3, 9:22 PM MST	Dense Fog Advisory	BOU	Larimer, Morgan, Weld	13 hr
Dec 4, 1:10 AM MST	Dense Fog Advisory	PUB	El Paso, Pueblo	8 hr
Dec 4, 1:55 AM MST	Winter Storm Watch	PUB	Chaffee, Lake, Saguache	12 hr
Dec 4, 2:00 AM MST	Winter Storm Watch	GJT	Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt	13 hr
Dec 4, 2:00 AM MST	Winter Weather Advisory	GJT	Moffat, Routt	39 hr
Dec 4, 2:20 AM MST	Winter Storm Watch	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	12 hr
Dec 4, 2:20 AM MST	Winter Weather Advisory	BOU	Grand, Jackson	45 hr
Dec 4, 2:18 PM MST	Winter Storm Warning	PUB	Chaffee, Lake, Saguache	57 hr
Dec 4, 2:18 PM MST	Winter Weather Advisory	PUB	Chaffee, Lake	57 hr
Dec 4, 2:21 PM MST	Winter Storm Warning	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	57 hr
Dec 4, 2:39 PM MST	Winter Storm Warning	GJT	Delta, Eagle, Garfield, Gunnison, Moffat, Montrose and 3 more	62 hr
Dec 4, 2:39 PM MST	Winter Weather Advisory	GJT	Delta, Eagle, Garfield, Gunnison, Hinsdale, Mesa and 5 more	56 hr
Dec 4, 5:01 PM MST	Dense Fog Advisory	PUB	Bent, Crowley, Otero, Prowers	13 hr
Dec 5, 1:35 PM MST	Winter Weather Advisory	BOU	Jackson	24 hr
Dec 7, 12:57 PM MST	High Wind Watch	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	20 hr
Dec 8, 9:12 AM MST	High Wind Watch	BOU	Boulder, Broomfield, Jefferson, Larimer, Weld	18 hr
Dec 8, 9:12 AM MST	High Wind Warning	BOU	Boulder, Broomfield, Clear Creek, Gilpin, Grand, Jackson and 5 more	39 hr
Dec 10, 3:39 AM MST	High Wind Warning	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	31 hr
Dec 11, 8:16 AM MST	Red Flag Warning	BOU	Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 8 more	9 hr
Dec 11, 10:38 AM MST	Red Flag Warning	PUB	El Paso, Huerfano, Las Animas, Pueblo	6 hr
Dec 13, 5:30 AM MST	Dense Fog Advisory	PUB	Kiowa, Prowers	4 hr
Dec 13, 6:44 AM MST	Dense Fog Advisory	GLD	Cheyenne, Kit Carson	2 hr
Dec 13, 6:44 AM MST	Winter Weather Advisory	GLD	Cheyenne, Kit Carson, Yuma	14 hr
Dec 15, 12:55 PM MST	High Wind Watch	BOU	Boulder, Broomfield, Clear Creek, Douglas, Gilpin, Grand and 6 more	13 hr
Dec 15, 12:58 PM MST	High Wind Watch	PUB	Chaffee, El Paso, Fremont, Lake, Saguache, Teller	13 hr
Dec 15, 1:20 PM MST	Fire Weather Watch	BOU	Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 3 more	14 hr
Dec 15, 1:47 PM MST	Fire Weather Watch	PUB	Baca, Bent, Crowley, El Paso, Fremont, Huerfano and 5 more	14 hr
Dec 16, 1:51 AM MST	High Wind Watch	BOU	Logan, Morgan, Weld	24 hr
Dec 16, 1:51 AM MST	High Wind Warning	BOU	Boulder, Broomfield, Clear Creek, Douglas, Elbert, Gilpin and 13 more	58 hr
Dec 16, 1:58 AM MST	High Wind Warning	PUB	Chaffee, Custer, El Paso, Fremont, Huerfano, Lake and 4 more	53 hr
Dec 16, 3:06 AM MST	Red Flag Warning	BOU	Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 5 more	39 hr
Dec 16, 3:27 AM MST	Red Flag Warning	PUB	Baca, Bent, Crowley, El Paso, Fremont, Huerfano and 5 more	39 hr
Dec 16, 12:53 PM MST	High Wind Watch	GLD	Cheyenne, Kit Carson, Yuma	22 hr
Dec 16, 2:06 PM MST	Winter Weather Advisory	BOU	Boulder, Grand, Jackson, Larimer	33 hr
Dec 16, 2:21 PM MST	Winter Weather Advisory	GJT	Moffat, Routt	33 hr
Dec 17, 1:35 AM MST	High Wind Watch	BOU	Phillips, Sedgwick	13 hr
Dec 17, 3:02 AM MST	Wind Advisory	GJT	Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt	23 hr
Dec 17, 10:38 AM MST	High Wind Warning	GLD	Cheyenne, Kit Carson, Yuma	28 hr
Dec 17, 12:15 PM MST	Red Flag Warning	GLD	Cheyenne, Kit Carson, Yuma	29 hr
Dec 17, 12:58 PM MST	Red Flag Warning	PUB	Baca, Bent, Kiowa, Prowers	28 hr
Dec 17, 2:26 PM MST	High Wind Watch	BOU	Boulder, Broomfield, Clear Creek, Douglas, Gilpin, Grand and 6 more	51 hr
Dec 17, 3:24 PM MST	Fire Weather Watch	BOU	Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 8 more	35 hr
Dec 17, 6:57 PM MST	High Wind Warning	BOU	Larimer, Weld	5 hr
Dec 17, 9:20 PM MST	Blowing Dust Warning	GLD	Cheyenne, Kit Carson, Yuma	5 hr
Dec 18, 2:10 AM MST	Fire Weather Watch	PUB	Bent, Crowley, El Paso, Huerfano, Las Animas, Otero and 1 more	12 hr
Dec 18, 2:31 AM MST	Red Flag Warning	BOU	Logan, Morgan, Phillips, Sedgwick, Washington, Weld	14 hr
Dec 18, 7:48 AM MST	Blowing Dust Warning	GLD	Yuma	6 hr
Dec 18, 2:30 PM MST	Red Flag Warning	PUB	Baca, Bent, Crowley, El Paso, Fremont, Huerfano and 5 more	28 hr
Dec 18, 2:44 PM MST	Red Flag Warning	BOU	Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 7 more	33 hr
Dec 18, 6:01 PM MST	High Wind Warning	BOU	Boulder, Broomfield, Clear Creek, Douglas, Gilpin, Grand and 6 more	26 hr
Dec 19, 1:54 AM MST	Winter Weather Advisory	GJT	Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt	43 hr
Dec 19, 2:07 AM MST	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	43 hr
Dec 19, 10:43 AM MST	High Wind Warning	PUB	Alamosa, Chaffee, Costilla, Custer, El Paso, Fremont and 4 more	18 hr
Dec 19, 2:18 PM MST	Winter Weather Advisory	PUB	Chaffee, Lake, Saguache	27 hr
Dec 19, 6:02 PM MST	Red Flag Warning	PUB	El Paso, Fremont, Huerfano, Pueblo, Teller	118 min
Dec 21, 2:31 PM MST	Fire Weather Watch	BOU	Arapahoe, Boulder, Broomfield, Clear Creek, Douglas, Elbert and 4 more	11 hr
Dec 22, 1:48 AM MST	Red Flag Warning	BOU	Arapahoe, Boulder, Broomfield, Clear Creek, Douglas, Elbert and 5 more	15 hr
Dec 22, 2:10 AM MST	Red Flag Warning	PUB	El Paso, Fremont, Huerfano, Pueblo, Teller	15 hr
Dec 25, 1:44 PM MST	Winter Storm Watch	BOU	Grand, Jackson	17 hr
Dec 25, 1:53 PM MST	Winter Storm Watch	GJT	Moffat, Routt	12 hr
Dec 26, 2:04 AM MST	Winter Storm Warning	GJT	Moffat, Routt	51 hr
Dec 26, 2:04 AM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more	56 hr
Dec 26, 2:07 AM MST	Winter Weather Advisory	PUB	Conejos, Mineral, Rio Grande	12 hr
Dec 26, 7:13 AM MST	Winter Storm Warning	BOU	Grand, Jackson	46 hr
Dec 26, 2:09 PM MST	Winter Storm Warning	PUB	Conejos, Mineral, Rio Grande	36 hr
Dec 26, 2:09 PM MST	Winter Weather Advisory	PUB	Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 6 more	44 hr
Dec 26, 2:40 PM MST	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	44 hr
Dec 28, 4:12 AM MST	Special Weather Statement	GLD	Kit Carson	63 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
Special Weather Statement	2
Winter
Winter Storm Warning	7
Winter Storm Watch	5
Winter Weather Advisory	19
Wind and dust
Blowing Dust Warning	2
High Wind Warning	8
High Wind Watch	8
Wind Advisory	1
Fire
Red Flag Warning	12
Fire Weather Watch	5
Fog and smoke
Dense Fog Advisory	5

By county

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

24 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2024 2026

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.