Weather alerts in Colorado, December 2019

41 weather alerts in December 2019, 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 2019. Tap one for its archive.

Alerts: 41
Warnings: 9
Watches: 5
Advisories: 25
Busiest day: December 26, 20197 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 4, 3:29 AM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Garfield, Hinsdale, La Plata and 6 more	37 hr
Dec 4, 3:40 AM MST	Winter Weather Advisory	PUB	Conejos, Mineral, Rio Grande	35 hr
Dec 6, 3:20 AM MST	Dense Fog Advisory	BOU	Larimer, Logan, Morgan, Phillips, Sedgwick, Washington and 1 more	6 hr
Dec 7, 2:39 AM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more	56 hr
Dec 7, 3:20 AM MST	Dense Fog Advisory	BOU	Larimer, Weld	6 hr
Dec 7, 1:34 PM MST	Winter Storm Warning	PUB	Conejos, Mineral, Rio Grande	38 hr
Dec 7, 1:34 PM MST	Winter Weather Advisory	PUB	Chaffee, Lake, Saguache	42 hr
Dec 7, 2:51 PM MST	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	44 hr
Dec 8, 3:11 PM MST	Special Weather Statement	GJT	Garfield	49 min
Dec 8, 11:03 PM MST	Dense Fog Advisory	GJT	Garfield, Mesa	13 hr
Dec 11, 3:02 PM MST	Winter Weather Advisory	GJT	Delta, Eagle, Garfield, Gunnison, Mesa, Moffat and 6 more	4 days
Dec 11, 3:06 PM MST	Winter Storm Watch	PUB	Alamosa, Chaffee, Conejos, Costilla, Custer, El Paso and 9 more	61 hr
Dec 11, 3:45 PM MST	Winter Storm Watch	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	37 hr
Dec 11, 9:28 PM MST	Winter Storm Watch	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more	41 hr
Dec 12, 4:09 AM MST	Winter Storm Warning	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 11 more	4 days
Dec 12, 4:10 AM MST	Winter Storm Warning	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	67 hr
Dec 12, 4:12 AM MST	Winter Storm Warning	PUB	Alamosa, Chaffee, Conejos, Costilla, Custer, El Paso and 9 more	4 days
Dec 12, 4:12 AM MST	Winter Weather Advisory	PUB	Lake	24 hr
Dec 14, 4:02 AM MST	Winter Weather Advisory	PUB	Alamosa, Chaffee, Conejos, Costilla, El Paso, Las Animas and 3 more	53 hr
Dec 14, 1:49 PM MST	Snow Squall Warning	BOU	Larimer, Morgan, Weld	56 min
Dec 14, 2:35 PM MST	Snow Squall Warning	BOU	Logan, Morgan, Washington, Weld	55 min
Dec 14, 2:38 PM MST	Winter Weather Advisory	BOU	Park	19 hr
Dec 14, 9:15 PM MST	Dense Fog Advisory	GLD	Cheyenne, Kit Carson	9 hr
Dec 23, 2:58 AM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 11 more	68 hr
Dec 23, 3:45 AM MST	Winter Weather Advisory	PUB	Conejos, Mineral, Rio Grande	59 hr
Dec 24, 2:57 PM MST	Winter Weather Advisory	BOU	Grand, Jackson	27 hr
Dec 25, 2:10 PM MST	Winter Weather Advisory	GJT	Archuleta, Dolores, Hinsdale, La Plata, Montezuma, San Juan and 1 more	13 hr
Dec 25, 2:51 PM MST	Winter Weather Advisory	PUB	Conejos, Mineral, Rio Grande	13 hr
Dec 26, 2:40 AM MST	Winter Storm Warning	GJT	Archuleta, Dolores, Hinsdale, La Plata, Montezuma, San Juan and 1 more	50 hr
Dec 26, 2:40 AM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Gunnison, Hinsdale, La Plata and 5 more	50 hr
Dec 26, 2:43 AM MST	Winter Storm Watch	GLD	Cheyenne, Kit Carson, Yuma	24 hr
Dec 26, 3:36 AM MST	Winter Storm Watch	BOU	Adams, Arapahoe, Douglas, Elbert, Lincoln, Logan and 5 more	34 hr
Dec 26, 4:04 AM MST	Winter Storm Warning	PUB	Alamosa, Conejos, Costilla, Custer, El Paso, Fremont and 5 more	66 hr
Dec 26, 7:16 AM MST	Dense Fog Advisory	BOU	Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 1 more	3 hr
Dec 26, 2:44 PM MST	Winter Weather Advisory	PUB	Alamosa, Baca, Bent, Chaffee, Conejos, Costilla and 14 more	53 hr
Dec 27, 2:23 AM MST	Winter Weather Advisory	GLD	Cheyenne, Kit Carson, Yuma	62 hr
Dec 27, 9:36 AM MST	Mesoscale Discussion	SPC	Baca, Bent, Cheyenne, Crowley, Huerfano, Kiowa and 6 more	4 hr
Dec 27, 10:08 AM MST	Winter Weather Advisory	BOU	Elbert, Lincoln	7 hr
Dec 27, 1:57 PM MST	Winter Storm Warning	BOU	Adams, Arapahoe, Douglas, Elbert, Lincoln, Logan and 3 more	34 hr
Dec 27, 1:57 PM MST	Winter Weather Advisory	BOU	Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 7 more	34 hr
Dec 27, 3:01 PM MST	Winter Weather Advisory	PUB	El Paso	5 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
Mesoscale Discussion	1
Special Weather Statement	1
Winter
Snow Squall Warning	2
Winter Storm Warning	7
Winter Storm Watch	5
Winter Weather Advisory	20
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 2018 2020

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.