Alert archive / Colorado / Winter Weather Advisories

Winter Weather Advisories in Colorado, 2021

117 winter weather advisories in 2021. 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 weather advisories reaches back to 2005.

Winter Weather Advisories by county

Each county as a circle sized by its count in 2021. Tap one for its archive.

Winter Weather Advisories: 117
Busiest month: February30 winter weather advisories
Busiest day: February 8, 20214 winter weather advisories

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 4, 3:40 AM MST	Winter Weather Advisory	GJT	Moffat, Rio Blanco, Routt	37 hr
Jan 4, 4:02 AM MST	Winter Weather Advisory	BOU	Grand, Jackson	37 hr
Jan 8, 2:56 PM MST	Winter Weather Advisory	PUB	Baca, Costilla, Custer, Fremont, Huerfano, Las Animas and 1 more	41 hr
Jan 17, 1:56 PM MST	Winter Weather Advisory	BOU	Grand, Jackson	19 hr
Jan 17, 1:57 PM MST	Winter Weather Advisory	GJT	Moffat, Routt	19 hr
Jan 17, 1:57 PM MST	Winter Weather Advisory	GJT	Archuleta, Dolores, Hinsdale, La Plata, Montezuma, San Juan and 1 more	24 hr
Jan 17, 8:54 PM MST	Winter Weather Advisory	PUB	Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 6 more	41 hr
Jan 18, 1:40 PM MST	Winter Weather Advisory	GJT	Dolores, Montezuma, San Miguel	27 hr
Jan 21, 2:00 PM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 11 more	4 days
Jan 22, 4:08 AM MST	Winter Weather Advisory	PUB	Conejos, Crowley, El Paso, Mineral, Pueblo, Rio Grande	3 days
Jan 22, 4:45 AM MST	Winter Weather Advisory	BOU	Grand, Jackson	36 hr
Jan 24, 3:00 AM MST	Winter Weather Advisory	GLD	Kit Carson, Yuma	38 hr
Jan 25, 2:34 AM MST	Winter Weather Advisory	BOU	Elbert, Lincoln, Washington	8 hr
Jan 25, 3:35 AM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Hinsdale, La Plata, Mesa and 5 more	37 hr
Jan 25, 3:03 PM MST	Winter Weather Advisory	PUB	Alamosa, Baca, Bent, Chaffee, Conejos, Costilla and 14 more	29 hr
Jan 29, 3:33 AM MST	Winter Weather Advisory	GJT	Archuleta, Dolores, Hinsdale, La Plata, Montezuma, San Juan and 1 more	28 hr
Jan 29, 3:50 AM MST	Winter Weather Advisory	PUB	Conejos, Mineral, Rio Grande	28 hr
Feb 2, 3:09 AM MST	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	53 hr
Feb 2, 3:33 AM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more	52 hr
Feb 2, 3:49 AM MST	Winter Weather Advisory	PUB	Alamosa, Chaffee, Conejos, Costilla, Custer, El Paso and 8 more	52 hr
Feb 4, 3:13 AM MST	Winter Weather Advisory	GJT	Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt	50 hr
Feb 4, 2:39 PM MST	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	38 hr
Feb 5, 6:34 PM MST	Winter Weather Advisory	PUB	Chaffee, Lake, Saguache	9 hr
Feb 6, 3:13 AM MST	Winter Weather Advisory	GJT	Moffat, Routt	26 hr
Feb 6, 3:42 AM MST	Winter Weather Advisory	BOU	Boulder, Grand, Jackson, Larimer, Park	37 hr
Feb 7, 5:04 PM MST	Winter Weather Advisory	BOU	Park	7 hr
Feb 7, 8:10 PM MST	Winter Weather Advisory	GLD	Cheyenne, Kit Carson	13 hr
Feb 8, 2:06 PM MST	Winter Weather Advisory	GJT	Eagle, Garfield, Moffat, Rio Blanco, Routt	46 hr
Feb 8, 2:37 PM MST	Winter Weather Advisory	BOU	Boulder, Grand, Jackson, Larimer	44 hr
Feb 11, 3:48 AM MST	Winter Weather Advisory	GJT	Eagle, Garfield, Moffat, Rio Blanco, Routt	48 hr
Feb 11, 4:10 AM MST	Winter Weather Advisory	BOU	Boulder, Grand, Jackson, Larimer	49 hr
Feb 12, 2:14 PM MST	Winter Weather Advisory	GJT	Delta, Dolores, Eagle, Garfield, Gunnison, Hinsdale and 10 more	51 hr
Feb 12, 3:14 PM MST	Winter Weather Advisory	PUB	Alamosa, Baca, Bent, Chaffee, Costilla, Crowley and 14 more	48 hr
Feb 12, 8:46 PM MST	Winter Weather Advisory	BOU	Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 16 more	40 hr
Feb 13, 2:05 AM MST	Winter Weather Advisory	GLD	Cheyenne, Kit Carson, Yuma	33 hr
Feb 14, 2:13 PM MST	Winter Weather Advisory	GJT	Archuleta, Dolores, Eagle, Garfield, Gunnison, Hinsdale and 9 more	51 hr
Feb 15, 2:56 AM MST	Winter Weather Advisory	BOU	Grand, Jackson	39 hr
Feb 15, 3:48 AM MST	Winter Weather Advisory	PUB	Conejos, Mineral, Rio Grande	43 hr
Feb 17, 4:17 AM MST	Winter Weather Advisory	PUB	Costilla, Custer, El Paso, Fremont, Huerfano, Las Animas and 2 more	25 hr
Feb 17, 5:20 PM MST	Winter Weather Advisory	BOU	Arapahoe, Boulder, Broomfield, Douglas, Elbert, Jefferson and 2 more	10 hr
Feb 19, 2:08 PM MST	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	39 hr
Feb 19, 2:49 PM MST	Winter Weather Advisory	GJT	Eagle, Garfield, Gunnison, Hinsdale, Moffat, Montrose and 5 more	38 hr
Feb 23, 4:15 AM MST	Winter Weather Advisory	PUB	Custer, El Paso, Fremont, Huerfano, Pueblo, Teller	24 hr
Feb 23, 2:35 PM MST	Winter Weather Advisory	BOU	Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 7 more	43 hr
Feb 23, 3:08 PM MST	Winter Weather Advisory	PUB	Alamosa, Chaffee, Costilla, Crowley, Custer, El Paso and 6 more	44 hr
Feb 26, 2:50 AM MST	Winter Weather Advisory	GJT	Moffat, Routt	34 hr
Feb 26, 2:56 AM MST	Winter Weather Advisory	BOU	Grand, Jackson	33 hr
Mar 3, 3:10 AM MST	Winter Weather Advisory	GJT	Archuleta, Dolores, Hinsdale, La Plata, Montezuma, San Juan and 1 more	34 hr
Mar 3, 3:50 AM MST	Winter Weather Advisory	PUB	Conejos, Costilla, Custer, El Paso, Fremont, Huerfano and 5 more	48 hr
Mar 3, 2:40 PM MST	Winter Weather Advisory	BOU	Arapahoe, Boulder, Clear Creek, Douglas, Elbert, Gilpin and 6 more	33 hr
Mar 9, 2:40 AM MST	Winter Weather Advisory	BOU	Boulder, Grand, Jackson, Larimer	38 hr
Mar 9, 2:51 AM MST	Winter Weather Advisory	GJT	Moffat, Routt	38 hr
Mar 12, 3:47 AM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 11 more	3 days
Mar 12, 4:26 AM MST	Winter Weather Advisory	PUB	Chaffee, Conejos, Huerfano, Las Animas, Mineral, Pueblo and 2 more	64 hr
Mar 12, 2:17 PM MST	Winter Weather Advisory	BOU	Elbert, Grand, Jackson, Lincoln, Logan, Park and 2 more	63 hr
Mar 12, 2:39 PM MST	Winter Weather Advisory	GLD	Cheyenne, Kit Carson, Yuma	18 hr
Mar 15, 9:36 PM MDT	Winter Weather Advisory	PUB	Bent, Conejos, Costilla, Custer, Fremont, Mineral and 6 more	34 hr
Mar 20, 2:32 PM MDT	Winter Weather Advisory	GJT	Eagle, Garfield, Pitkin	32 hr
Mar 21, 2:43 AM MDT	Winter Weather Advisory	BOU	Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 5 more	31 hr
Mar 21, 4:02 AM MDT	Winter Weather Advisory	PUB	Alamosa, Chaffee, Costilla, Custer, El Paso, Fremont and 5 more	35 hr
Mar 22, 2:43 PM MDT	Winter Weather Advisory	GJT	Archuleta, Dolores, Gunnison, Hinsdale, La Plata, Montezuma and 4 more	51 hr
Mar 22, 2:57 PM MDT	Winter Weather Advisory	PUB	Alamosa, Chaffee, Conejos, Costilla, Custer, El Paso and 8 more	51 hr
Mar 23, 9:11 PM MDT	Winter Weather Advisory	BOU	Arapahoe, Douglas, Elbert	11 hr
Mar 24, 9:35 PM MDT	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Garfield, Hinsdale, La Plata and 6 more	40 hr
Mar 24, 9:37 PM MDT	Winter Weather Advisory	PUB	Conejos, Mineral, Rio Grande	40 hr
Apr 6, 6:08 PM MDT	Winter Weather Advisory	BOU	Arapahoe, Douglas, Elbert	3 hr
Apr 13, 2:55 AM MDT	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	27 hr
Apr 13, 3:48 AM MDT	Winter Weather Advisory	PUB	Alamosa, Chaffee, Costilla, Custer, Fremont, Huerfano and 2 more	26 hr
Apr 14, 3:03 PM MDT	Winter Weather Advisory	BOU	Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 16 more	45 hr
Apr 15, 2:34 AM MDT	Winter Weather Advisory	GLD	Kit Carson, Yuma	33 hr
Apr 15, 6:28 PM MDT	Winter Weather Advisory	PUB	El Paso, Fremont, Teller	15 hr
Apr 16, 3:50 AM MDT	Winter Weather Advisory	PUB	Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 6 more	41 hr
Apr 16, 2:16 PM MDT	Winter Weather Advisory	GJT	Archuleta, Dolores, Gunnison, Hinsdale, La Plata, Montezuma and 4 more	31 hr
Apr 18, 1:56 PM MDT	Winter Weather Advisory	BOU	Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 16 more	37 hr
Apr 18, 3:01 PM MDT	Winter Weather Advisory	PUB	El Paso, Fremont, Teller	37 hr
Apr 19, 1:50 PM MDT	Winter Weather Advisory	GLD	Kit Carson, Yuma	13 hr
Apr 19, 3:22 PM MDT	Winter Weather Advisory	PUB	El Paso	13 hr
Apr 21, 7:03 PM MDT	Winter Weather Advisory	BOU	Boulder, Clear Creek, Douglas, Gilpin, Jefferson, Larimer and 1 more	100 min
Apr 27, 2:08 PM MDT	Winter Weather Advisory	BOU	Clear Creek, Douglas, Gilpin, Jefferson, Park	20 hr
Apr 27, 3:02 PM MDT	Winter Weather Advisory	PUB	Alamosa, Costilla, Custer, El Paso, Fremont, Huerfano and 4 more	13 hr
May 1, 2:50 PM MDT	Winter Weather Advisory	PUB	Alamosa, Chaffee, Conejos, Costilla, Custer, El Paso and 9 more	53 hr
May 2, 1:29 PM MDT	Winter Weather Advisory	GJT	Delta, Eagle, Garfield, Gunnison, Hinsdale, Mesa and 7 more	25 hr
May 2, 2:19 PM MDT	Winter Weather Advisory	BOU	Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 3 more	23 hr
May 10, 9:14 AM MDT	Winter Weather Advisory	PUB	Alamosa, Chaffee, Costilla, Custer, El Paso, Fremont and 5 more	24 hr
May 18, 9:06 AM MDT	Winter Weather Advisory	PUB	Alamosa, Chaffee, Costilla, Custer, Fremont, Huerfano and 3 more	6 hr
May 21, 10:21 AM MDT	Winter Weather Advisory	GJT	Archuleta, Dolores, Hinsdale, La Plata, Montezuma, San Juan and 1 more	14 hr
May 21, 11:18 AM MDT	Winter Weather Advisory	PUB	Conejos, Mineral, Rio Grande	12 hr
Oct 11, 3:46 AM MDT	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more	50 hr
Oct 11, 4:14 AM MDT	Winter Weather Advisory	PUB	Mineral, Rio Grande, Saguache	38 hr
Oct 11, 2:55 PM MDT	Winter Weather Advisory	BOU	Boulder, Grand, Jackson, Larimer	39 hr
Oct 18, 3:13 AM MDT	Winter Weather Advisory	GJT	Eagle, Garfield, Moffat, Rio Blanco, Routt	42 hr
Oct 25, 3:02 AM MDT	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 11 more	45 hr
Oct 25, 4:04 AM MDT	Winter Weather Advisory	PUB	Conejos, Mineral, Rio Grande	44 hr
Oct 25, 3:02 PM MDT	Winter Weather Advisory	BOU	Grand, Jackson	33 hr
Nov 1, 9:09 AM MDT	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	36 hr
Nov 1, 2:29 PM MDT	Winter Weather Advisory	GJT	Eagle, Garfield, Moffat, Pitkin, Routt	36 hr
Nov 9, 2:49 AM MST	Winter Weather Advisory	GJT	Eagle, Garfield, Moffat, Rio Blanco, Routt	33 hr
Dec 5, 3:08 PM MST	Winter Weather Advisory	GJT	Delta, Eagle, Garfield, Gunnison, Hinsdale, Moffat and 5 more	45 hr
Dec 8, 11:25 AM MST	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jefferson, Park and 1 more	54 hr
Dec 8, 12:54 PM MST	Winter Weather Advisory	PUB	Chaffee, Lake, Mineral, Rio Grande, Saguache	52 hr
Dec 9, 12:37 PM MST	Winter Weather Advisory	GJT	Archuleta, Eagle, Garfield, La Plata, Mesa, Pitkin	21 hr
Dec 13, 2:31 PM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Eagle, Garfield, Gunnison, Hinsdale and 9 more	53 hr
Dec 13, 3:17 PM MST	Winter Weather Advisory	PUB	Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 6 more	50 hr
Dec 14, 11:54 AM MST	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	32 hr
Dec 16, 3:23 AM MST	Winter Weather Advisory	GJT	Moffat, Routt	33 hr
Dec 16, 3:27 AM MST	Winter Weather Advisory	BOU	Grand, Jackson	33 hr
Dec 22, 3:34 AM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Eagle, Garfield, Mesa, Moffat and 6 more	3 days
Dec 22, 2:33 PM MST	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 2 more	66 hr
Dec 22, 3:09 PM MST	Winter Weather Advisory	PUB	Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 6 more	67 hr
Dec 25, 1:48 PM MST	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	66 hr
Dec 25, 2:56 PM MST	Winter Weather Advisory	PUB	Chaffee, Conejos, Lake, Mineral, Rio Grande, Saguache	4 days
Dec 25, 2:59 PM MST	Winter Weather Advisory	GJT	Delta, Eagle, Garfield, Gunnison, Hinsdale, Mesa and 7 more	4 days
Dec 27, 4:02 AM MST	Winter Weather Advisory	GJT	Archuleta, Dolores, Eagle, Garfield, La Plata, Mesa and 6 more	52 hr
Dec 29, 2:53 PM MST	Winter Weather Advisory	GJT	Delta, Dolores, Eagle, Garfield, Gunnison, Mesa and 6 more	62 hr
Dec 30, 3:00 AM MST	Winter Weather Advisory	BOU	Grand, Jackson, Summit	11 hr
Dec 30, 3:48 AM MST	Winter Weather Advisory	PUB	Lake, Mineral, Rio Grande, Saguache	55 hr
Dec 30, 1:57 PM MST	Winter Weather Advisory	BOU	Adams, Arapahoe, Broomfield, Denver, Douglas, Elbert and 7 more	45 hr

By county

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

24 more counties

The busiest days

Days with the most alerts issued, by UTC date.

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. Warning verification from the Mesonet's Cow. Rebuilt daily.