Weather alerts in Colorado, December 2020

50 weather alerts in December 2020, 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 2020. Tap one for its archive.

Alerts: 50
Warnings: 25
Watches: 6
Advisories: 18
Busiest day: December 22, 202014 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 2, 3:10 AM MST	Winter Weather Advisory	PUB	Baca, Bent, Las Animas, Prowers	18 hr
Dec 9, 2:14 PM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 8 more	55 hr
Dec 9, 2:57 PM MST	Winter Weather Advisory	PUB	Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 6 more	51 hr
Dec 11, 3:20 AM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more	48 hr
Dec 11, 3:03 PM MST	Winter Weather Advisory	PUB	Alamosa, Baca, Bent, Chaffee, Conejos, Costilla and 14 more	40 hr
Dec 12, 3:43 AM MST	Winter Weather Advisory	GLD	Cheyenne	25 hr
Dec 12, 4:47 AM MST	Winter Weather Advisory	BOU	Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 9 more	21 hr
Dec 12, 5:57 AM MST	Dense Fog Advisory	PUB	El Paso	5 hr
Dec 12, 10:16 AM MST	Winter Storm Warning	PUB	Baca, Las Animas, Prowers	21 hr
Dec 14, 10:03 AM MST	Winter Weather Advisory	PUB	Baca, Bent, Las Animas, Otero, Prowers	31 hr
Dec 17, 2:36 AM MST	Winter Weather Advisory	GJT	Delta, Eagle, Garfield, Gunnison, Hinsdale, Mesa and 6 more	33 hr
Dec 18, 3:19 PM MST	High Wind Watch	BOU	Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more	19 hr
Dec 18, 5:08 PM MST	Areal Flood Advisory	GJT	Eagle, Garfield, Pitkin	4 days
Dec 19, 10:30 AM MST	High Wind Warning	BOU	Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more	31 hr
Dec 21, 7:47 PM MST	High Wind Watch	GLD	Cheyenne, Kit Carson, Yuma	18 hr
Dec 21, 7:52 PM MST	High Wind Watch	BOU	Adams, Arapahoe, Elbert, Larimer, Lincoln, Logan and 5 more	8 hr
Dec 21, 9:39 PM MST	High Wind Watch	PUB	Baca, Bent, Crowley, Kiowa, Las Animas, Otero and 1 more	6 hr
Dec 22, 2:47 AM MST	Winter Weather Advisory	GJT	Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt	33 hr
Dec 22, 3:29 AM MST	High Wind Warning	GLD	Cheyenne, Kit Carson, Yuma	37 hr
Dec 22, 3:44 AM MST	High Wind Warning	PUB	Baca, Bent, Crowley, El Paso, Kiowa, Las Animas and 3 more	35 hr
Dec 22, 3:48 AM MST	High Wind Warning	BOU	Adams, Arapahoe, Elbert, Larimer, Lincoln, Logan and 5 more	33 hr
Dec 22, 3:52 AM MST	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	31 hr
Dec 22, 8:29 AM MST	Dense Fog Advisory	GJT	Eagle, Garfield, Pitkin	3 hr
Dec 22, 3:54 PM MST	Snow Squall Warning	GJT	Moffat, Rio Blanco, Routt	36 min
Dec 22, 4:22 PM MST	Snow Squall Warning	GJT	Garfield, Moffat, Rio Blanco, Routt	53 min
Dec 22, 4:24 PM MST	Snow Squall Warning	BOU	Jackson, Larimer	21 min
Dec 22, 4:53 PM MST	Snow Squall Warning	BOU	Clear Creek, Summit	37 min
Dec 22, 4:57 PM MST	Snow Squall Warning	GJT	Garfield, Rio Blanco	48 min
Dec 22, 5:06 PM MST	Snow Squall Warning	BOU	Grand, Jackson	39 min
Dec 22, 5:10 PM MST	Special Weather Statement	GJT	Mesa	35 min
Dec 22, 5:11 PM MST	Snow Squall Warning	GJT	Eagle, Garfield, Rio Blanco, Routt	34 min
Dec 22, 5:22 PM MST	Snow Squall Warning	GJT	Eagle, Garfield, Routt	23 min
Dec 22, 5:40 PM MST	Snow Squall Warning	BOU	Grand, Jackson, Larimer	50 min
Dec 22, 6:09 PM MST	Snow Squall Warning	BOU	Clear Creek, Gilpin, Grand, Summit	66 min
Dec 22, 6:11 PM MST	Snow Squall Warning	GJT	Eagle	34 min
Dec 22, 6:23 PM MST	Snow Squall Warning	BOU	Larimer, Weld	37 min
Dec 22, 6:31 PM MST	Snow Squall Warning	PUB	Chaffee, Lake	29 min
Dec 22, 6:38 PM MST	Snow Squall Warning	GJT	Gunnison	67 min
Dec 22, 6:43 PM MST	Snow Squall Warning	GJT	Eagle, Pitkin	36 min
Dec 22, 7:01 PM MST	Snow Squall Warning	PUB	Chaffee, Fremont, Lake, Saguache	59 min
Dec 22, 7:43 PM MST	Snow Squall Warning	GJT	Gunnison, Pitkin	47 min
Dec 22, 8:00 PM MST	Snow Squall Warning	PUB	Chaffee, Fremont, Saguache	45 min
Dec 27, 3:24 AM MST	Winter Storm Watch	GJT	Archuleta, Dolores, Hinsdale, La Plata, Montezuma, San Juan and 1 more	11 hr
Dec 27, 4:00 AM MST	Winter Storm Watch	PUB	Conejos, Mineral, Rio Grande	11 hr
Dec 27, 2:00 PM MST	Winter Weather Advisory	GLD	Kit Carson, Yuma	49 hr
Dec 27, 2:14 PM MST	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 7 more	46 hr
Dec 27, 2:41 PM MST	Winter Storm Warning	GJT	Archuleta, Dolores, Hinsdale, La Plata, Montezuma, San Juan and 1 more	48 hr
Dec 27, 2:41 PM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Eagle, Garfield, Gunnison, Hinsdale and 9 more	48 hr
Dec 27, 3:19 PM MST	Winter Storm Warning	PUB	Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 5 more	48 hr
Dec 27, 3:19 PM MST	Winter Weather Advisory	PUB	Baca, Chaffee, Costilla, Custer, El Paso, Fremont and 8 more	48 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
Special Weather Statement	1
Flooding
Areal Flood Advisory	1
Winter
Snow Squall Warning	18
Winter Storm Warning	3
Winter Storm Watch	2
Winter Weather Advisory	15
Wind and dust
High Wind Warning	4
High Wind Watch	4
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.

24 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2019 2021

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.