Weather alerts in Colorado, December 2015

65 weather alerts in December 2015, 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 2015. Tap one for its archive.

Alerts: 65
Warnings: 22
Watches: 14
Advisories: 28
Busiest day: December 21, 201510 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, 6:50 PM MST	Winter Weather Advisory	GJT	Moffat, Rio Blanco, Routt	5 hr
Dec 9, 5:45 AM MST	High Wind Warning	BOU	Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more	21 hr
Dec 10, 2:56 PM MST	Winter Storm Watch	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	17 hr
Dec 10, 3:18 PM MST	Winter Storm Watch	PUB	Alamosa, Chaffee, Conejos, Costilla, Custer, El Paso and 9 more	13 hr
Dec 10, 3:26 PM MST	Winter Storm Warning	GJT	Eagle, Garfield, Moffat, Rio Blanco, Routt	51 hr
Dec 10, 3:26 PM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more	57 hr
Dec 11, 3:28 AM MST	Winter Storm Warning	BOU	Grand, Jackson	31 hr
Dec 11, 4:16 AM MST	Winter Weather Advisory	PUB	Alamosa, Bent, Chaffee, Conejos, Costilla, Crowley and 13 more	61 hr
Dec 11, 8:14 AM MST	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	31 hr
Dec 11, 3:51 PM MST	Winter Storm Watch	PUB	Baca, Kiowa, Prowers	22 hr
Dec 12, 2:53 AM MST	Winter Weather Advisory	GLD	Cheyenne, Kit Carson, Yuma	33 hr
Dec 12, 5:08 AM MST	Winter Storm Warning	PUB	Alamosa, Baca, Chaffee, Conejos, Costilla, Custer and 9 more	37 hr
Dec 12, 8:19 AM MST	Dense Fog Advisory	GJT	Delta, Dolores, Garfield, Gunnison, Mesa, Montrose and 1 more	88 min
Dec 12, 11:23 PM MST	Dense Fog Advisory	GJT	La Plata, Moffat, Rio Blanco, Routt	9 hr
Dec 13, 2:23 PM MST	Blizzard Warning	PUB	Baca	4 hr
Dec 13, 3:24 PM MST	Winter Storm Watch	PUB	Chaffee, Conejos, Lake, Mineral, Rio Grande, Saguache	12 hr
Dec 13, 3:33 PM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more	53 hr
Dec 14, 3:36 AM MST	Winter Storm Warning	PUB	Conejos, El Paso, Mineral, Rio Grande	34 hr
Dec 14, 3:36 AM MST	Winter Weather Advisory	PUB	Chaffee, El Paso, Fremont, Lake, Mineral, Rio Grande and 2 more	41 hr
Dec 14, 3:45 AM MST	Winter Storm Watch	BOU	Logan, Morgan, Phillips, Sedgwick, Washington, Weld	11 hr
Dec 14, 3:45 AM MST	Winter Weather Advisory	BOU	Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 11 more	37 hr
Dec 14, 1:40 PM MST	Winter Storm Warning	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more	43 hr
Dec 14, 2:27 PM MST	Winter Storm Warning	GLD	Yuma	28 hr
Dec 14, 2:27 PM MST	Winter Weather Advisory	GLD	Kit Carson	28 hr
Dec 14, 3:12 PM MST	Winter Storm Warning	BOU	Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 9 more	26 hr
Dec 15, 2:55 AM MST	Mesoscale Discussion	SPC	Adams, Arapahoe, Broomfield, Denver, Douglas, Weld	4 hr
Dec 16, 9:00 AM MST	Winter Weather Advisory	GJT	Eagle, Garfield, Moffat, Rio Blanco, Routt	23 hr
Dec 17, 2:56 PM MST	High Wind Warning	PUB	El Paso, Fremont, Teller	13 hr
Dec 17, 4:01 PM MST	High Wind Warning	BOU	Boulder, Broomfield, Clear Creek, Douglas, Gilpin, Grand and 6 more	19 hr
Dec 19, 4:25 AM MST	High Wind Watch	PUB	Alamosa, Chaffee, Costilla, Custer, El Paso, Fremont and 5 more	24 hr
Dec 19, 7:59 AM MST	Dense Fog Advisory	GJT	Eagle, Garfield, Pitkin	3 hr
Dec 19, 8:17 PM MST	High Wind Warning	PUB	Alamosa, Chaffee, Costilla, Custer, El Paso, Fremont and 5 more	8 hr
Dec 20, 5:00 AM MST	Winter Storm Watch	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more	32 hr
Dec 20, 2:48 PM MST	Winter Storm Watch	PUB	Chaffee, Lake, Saguache	13 hr
Dec 21, 3:56 AM MST	Winter Storm Warning	PUB	Chaffee, Conejos, Lake, Mineral, Rio Grande, Saguache	65 hr
Dec 21, 4:49 AM MST	High Wind Watch	BOU	Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more	10 hr
Dec 21, 5:00 AM MST	Winter Storm Warning	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	64 hr
Dec 21, 5:00 AM MST	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	10 hr
Dec 21, 5:14 AM MST	Winter Storm Warning	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more	63 hr
Dec 21, 5:14 AM MST	Winter Weather Advisory	GJT	Moffat, Rio Blanco, Routt	8 hr
Dec 21, 7:14 AM MST	Dense Fog Advisory	GJT	Garfield, Mesa	3 hr
Dec 21, 10:16 AM MST	Winter Weather Advisory	PUB	Chaffee, Conejos, Lake, Mineral, Rio Grande, Saguache	59 hr
Dec 21, 1:24 PM MST	Winter Weather Advisory	GJT	Dolores, Mesa, Montrose, San Miguel	40 hr
Dec 21, 2:49 PM MST	High Wind Warning	BOU	Boulder, Clear Creek, Douglas, Gilpin, Jefferson, Larimer and 1 more	12 hr
Dec 22, 12:18 AM MST	Dense Fog Advisory	GJT	Garfield, Mesa	6 hr
Dec 22, 2:43 PM MST	Winter Storm Watch	PUB	Conejos, Mineral, Rio Grande	25 hr
Dec 23, 3:11 AM MST	Dense Fog Advisory	GJT	Garfield, Mesa	7 hr
Dec 23, 3:14 AM MST	Dense Fog Advisory	BOU	Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 10 more	7 hr
Dec 23, 2:09 PM MST	Winter Storm Watch	GJT	Archuleta, Eagle, Garfield, Mesa, Moffat, Pitkin and 1 more	25 hr
Dec 23, 2:09 PM MST	Winter Storm Warning	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more	67 hr
Dec 23, 2:09 PM MST	Winter Weather Advisory	GJT	Delta, Dolores, Eagle, Garfield, Gunnison, La Plata and 8 more	67 hr
Dec 23, 3:26 PM MST	Winter Storm Warning	PUB	Conejos, Mineral, Rio Grande	40 hr
Dec 23, 3:26 PM MST	Winter Weather Advisory	PUB	Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 5 more	55 hr
Dec 23, 9:04 PM MST	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	6 hr
Dec 24, 2:59 AM MST	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	49 hr
Dec 25, 7:41 AM MST	Blizzard Warning	PUB	Conejos, Mineral, Rio Grande	15 hr
Dec 25, 1:21 PM MST	High Wind Warning	PUB	Huerfano, Las Animas	4 hr
Dec 25, 3:04 PM MST	Blizzard Watch	PUB	Baca, Las Animas	13 hr
Dec 25, 3:04 PM MST	Winter Storm Watch	PUB	Costilla, Huerfano, Las Animas	13 hr
Dec 26, 3:52 AM MST	Blizzard Watch	PUB	Bent, Otero, Prowers	11 hr
Dec 26, 3:52 AM MST	Blizzard Warning	PUB	Baca, Las Animas	24 hr
Dec 26, 3:52 AM MST	Winter Storm Warning	PUB	Costilla, Huerfano, Las Animas	24 hr
Dec 26, 3:04 PM MST	Winter Weather Advisory	PUB	Baca, Bent, Costilla, Huerfano, Las Animas, Prowers	19 hr
Dec 30, 1:26 PM MST	Winter Weather Advisory	GJT	Delta, Garfield, Gunnison, Mesa, Montrose, Ouray and 1 more	21 hr
Dec 31, 7:38 AM MST	Dense Fog Advisory	GJT	Garfield, Mesa, Moffat, Rio Blanco, Routt	4 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
Winter
Blizzard Warning	3
Winter Storm Warning	13
Blizzard Watch	2
Winter Storm Watch	10
Winter Weather Advisory	20
Wind and dust
High Wind Warning	6
High Wind Watch	2
Fog and smoke
Dense Fog Advisory	8

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 2014 2016

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.