Weather alerts in Colorado, May 2009

100 weather alerts in May 2009, 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 May 2009. Tap one for its archive.

Alerts: 100
Warnings: 25
Watches: 6
Advisories: 38
Busiest day: May 25, 200920 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
May 1, 10:58 AM MDT	Dense Fog Advisory	BOU	Boulder, Clear Creek, Douglas, Gilpin, Jefferson, Larimer and 1 more	5 hr
May 1, 4:05 PM MDT	Dense Fog Advisory	BOU	Boulder, Clear Creek, Douglas, Gilpin, Jefferson, Larimer and 1 more	8 hr
May 1, 7:22 PM MDT	Dense Fog Advisory	PUB	Crowley, Custer, El Paso, Fremont, Huerfano, Las Animas and 3 more	15 hr
May 1, 10:38 PM MDT	Special Weather Statement	BOU	Phillips	3 min
May 1, 10:46 PM MDT	Special Weather Statement	BOU	Broomfield, Denver	29 min
May 2, 7:20 PM MDT	Severe Thunderstorm Warning	GJT	Mesa	40 min
May 2, 8:00 PM MDT	Severe Thunderstorm Warning	GJT	Delta, Mesa	34 min
May 4, 12:44 PM MDT	Special Weather Statement	BOU	Lincoln	61 min
May 4, 1:00 PM MDT	Special Weather Statement	BOU	Adams	2 hr
May 4, 2:04 PM MDT	Special Weather Statement	BOU	Adams	56 min
May 7, 10:53 AM MDT	Areal Flood Advisory	GJT	Moffat, Routt	48 hr
May 7, 10:50 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	55 min
May 8, 8:14 PM MDT	Severe Thunderstorm Warning	PUB	Las Animas	61 min
May 11, 6:46 AM MDT	Fire Weather Watch	GJT	Moffat, Rio Blanco, Routt	9 hr
May 11, 10:08 AM MDT	River Flood Advisory	GJT	Routt	56 hr
May 11, 3:17 PM MDT	Red Flag Warning	GJT	Dolores, La Plata, Moffat, Montezuma, Rio Blanco, Routt and 1 more	30 hr
May 12, 3:47 AM MDT	Wind Advisory	GJT	Eagle, Garfield, Mesa, Moffat, Pitkin, Rio Blanco and 1 more	16 hr
May 12, 3:32 PM MDT	Fire Weather Watch	GJT	Dolores, La Plata, Montezuma, San Miguel	15 hr
May 13, 6:02 AM MDT	Red Flag Warning	GJT	Dolores, La Plata, Montezuma, San Miguel	14 hr
May 13, 5:04 PM MDT	River Flood Advisory	GJT	Mesa	36 hr
May 14, 12:21 PM MDT	Wind Advisory	GLD	Cheyenne, Kit Carson, Yuma	6 hr
May 17, 3:31 PM MDT	River Flood Watch	GJT	Moffat	49 hr
May 17, 4:07 PM MDT	River Flood Advisory	GJT	Pitkin	4 days
May 17, 4:12 PM MDT	River Flood Advisory	GJT	Mesa	5 days
May 17, 4:20 PM MDT	River Flood Advisory	GJT	Eagle	23 days
May 17, 4:28 PM MDT	River Flood Advisory	GJT	Routt	8 days
May 17, 4:28 PM MDT	River Flood Advisory	GJT	Moffat	5 days
May 17, 4:28 PM MDT	River Flood Advisory	GJT	Routt	5 days
May 18, 2:51 PM MDT	Fire Weather Watch	GJT	Dolores, Garfield, La Plata, Mesa, Montezuma, San Miguel	23 hr
May 19, 3:59 AM MDT	Wind Advisory	GLD	Cheyenne, Kit Carson, Yuma	16 hr
May 19, 6:41 AM MDT	Red Flag Warning	GJT	Dolores, Garfield, La Plata, Mesa, Montezuma, San Miguel	13 hr
May 19, 2:07 PM MDT	Red Flag Warning	GJT	Garfield, Mesa	30 hr
May 19, 3:33 PM MDT	Severe Thunderstorm Warning	GJT	Garfield, Mesa	17 min
May 19, 5:07 PM MDT	River Flood Advisory	GJT	Moffat	4 days
May 20, 2:01 PM MDT	Mesoscale Discussion	SPC	Logan, Sedgwick	89 min
May 21, 1:37 PM MDT	Areal Flood Advisory	PUB	Huerfano, Las Animas	2 hr
May 21, 1:53 PM MDT	Severe Thunderstorm Warning	PUB	Las Animas	67 min
May 21, 1:56 PM MDT	Severe Thunderstorm Warning	PUB	Huerfano, Las Animas	33 min
May 21, 2:11 PM MDT	Mesoscale Discussion	SPC	Costilla, Huerfano, Las Animas	64 min
May 21, 3:32 PM MDT	Flash Flood Warning	PUB	Las Animas	3 hr
May 21, 3:44 PM MDT	Flash Flood Warning	PUB	Las Animas	3 hr
May 21, 4:10 PM MDT	Areal Flood Advisory	PUB	Huerfano, Las Animas	3 hr
May 22, 2:10 PM MDT	Areal Flood Advisory	PUB	El Paso	2 hr
May 22, 2:34 PM MDT	Flash Flood Warning	PUB	El Paso	3 hr
May 22, 3:40 PM MDT	Areal Flood Advisory	BOU	Arapahoe	94 min
May 22, 6:44 PM MDT	Areal Flood Advisory	BOU	Adams, Broomfield, Weld	72 min
May 23, 4:51 PM MDT	Special Weather Statement	BOU	Denver	24 min
May 23, 11:32 PM MDT	Areal Flood Advisory	GJT	Garfield, Gunnison, Mesa, Pitkin	3 hr
May 24, 1:04 AM MDT	Areal Flood Advisory	GJT	Mesa	3 hr
May 24, 2:01 AM MDT	Flash Flood Watch	GJT	Delta, Dolores, Garfield, Gunnison, La Plata, Mesa and 5 more	20 hr
May 24, 5:51 AM MDT	Areal Flood Advisory	GJT	Mesa	3 hr
May 24, 5:59 AM MDT	Dense Fog Advisory	GLD	Cheyenne, Kit Carson	3 hr
May 24, 1:00 PM MDT	Special Weather Statement	BOU	Denver	90 min
May 24, 1:11 PM MDT	Special Weather Statement	BOU	Denver	34 min
May 24, 1:13 PM MDT	Areal Flood Advisory	PUB	El Paso	3 hr
May 24, 1:49 PM MDT	Special Weather Statement	BOU	Adams	26 min
May 24, 1:54 PM MDT	Flash Flood Warning	PUB	El Paso	107 min
May 24, 1:58 PM MDT	Areal Flood Advisory	BOU	Adams	92 min
May 24, 2:05 PM MDT	Tornado Warning	BOU	Adams, Denver	25 min
May 24, 2:38 PM MDT	Special Weather Statement	BOU	Denver	37 min
May 24, 3:31 PM MDT	Areal Flood Advisory	BOU	Adams, Arapahoe, Denver, Douglas, Jefferson	119 min
May 24, 3:45 PM MDT	Special Weather Statement	BOU	Denver	30 min
May 24, 4:17 PM MDT	Special Weather Statement	BOU	Arapahoe	43 min
May 24, 5:27 PM MDT	Areal Flood Advisory	BOU	Adams, Arapahoe, Morgan, Weld	93 min
May 24, 6:31 PM MDT	Mesoscale Discussion	SPC	Logan, Sedgwick	119 min
May 24, 6:33 PM MDT	Areal Flood Advisory	GJT	Delta, Montrose	4 hr
May 24, 7:18 PM MDT	Areal Flood Advisory	GJT	Mesa	3 hr
May 25, 3:58 AM MDT	Flash Flood Watch	GJT	Delta, Dolores, Garfield, Gunnison, Mesa, Moffat and 5 more	16 hr
May 25, 11:05 AM MDT	River Flood Warning	GJT	Routt	10 hr
May 25, 11:57 AM MDT	Special Weather Statement	BOU	Phillips	48 min
May 25, 12:13 PM MDT	Areal Flood Advisory	BOU	Adams, Arapahoe, Denver	77 min
May 25, 12:25 PM MDT	Tornado Warning	GLD	Kit Carson	28 min
May 25, 12:43 PM MDT	Special Weather Statement	BOU	Phillips, Sedgwick	92 min
May 25, 12:52 PM MDT	Special Weather Statement	BOU	Denver	38 min
May 25, 2:08 PM MDT	Special Weather Statement	BOU	Weld	52 min
May 25, 2:26 PM MDT	Special Weather Statement	BOU	Weld	49 min
May 25, 2:29 PM MDT	Severe Thunderstorm Warning	PUB	Crowley, Otero	29 min
May 25, 2:38 PM MDT	Special Weather Statement	BOU	Weld	52 min
May 25, 3:00 PM MDT	Severe Thunderstorm Warning	PUB	Otero	47 min
May 25, 3:28 PM MDT	Special Weather Statement	BOU	Weld	17 min
May 25, 4:01 PM MDT	Flash Flood Warning	BOU	Weld	115 min
May 25, 4:19 PM MDT	Special Weather Statement	BOU	Weld	86 min
May 25, 4:49 PM MDT	Areal Flood Advisory	BOU	Morgan, Weld	86 min
May 25, 4:56 PM MDT	Areal Flood Advisory	PUB	Huerfano, Las Animas	94 min
May 25, 6:25 PM MDT	Special Weather Statement	BOU	Morgan, Washington	50 min
May 25, 8:57 PM MDT	River Flood Advisory	GJT	Routt	61 hr
May 27, 3:57 AM MDT	Areal Flood Advisory	BOU	Weld	6 hr
May 27, 6:41 AM MDT	River Flood Advisory	GJT	Moffat	27 hr
May 28, 1:44 PM MDT	Special Weather Statement	BOU	Larimer	31 min
May 29, 1:51 PM MDT	Special Weather Statement	BOU	Douglas	24 min
May 29, 5:01 PM MDT	Special Weather Statement	BOU	Larimer	44 min
May 29, 6:48 PM MDT	Special Weather Statement	BOU	Lincoln	27 min
May 30, 3:35 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne, Kit Carson	37 min
May 30, 4:16 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	44 min
May 30, 4:18 PM MDT	Mesoscale Discussion	SPC	Adams, Arapahoe, Broomfield, Cheyenne, Denver, Douglas and 9 more	87 min
May 30, 4:52 PM MDT	Areal Flood Advisory	BOU	Arapahoe, Douglas, Elbert	83 min
May 30, 6:01 PM MDT	Severe Thunderstorm Warning	BOU	Morgan	44 min
May 31, 12:11 PM MDT	Special Weather Statement	BOU	Larimer	34 min
May 31, 1:21 PM MDT	Severe Thunderstorm Warning	BOU	Weld	39 min
May 31, 2:20 PM MDT	Special Weather Statement	BOU	Weld	40 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
Severe Thunderstorm Warning	13
Tornado Warning	2
Mesoscale Discussion	4
Special Weather Statement	27
Flooding
Flash Flood Warning	5
River Flood Warning	1
Flash Flood Watch	2
River Flood Watch	1
Areal Flood Advisory	20
River Flood Advisory	11
Wind and dust
Wind Advisory	3
Fire
Red Flag Warning	4
Fire Weather Watch	3
Fog and smoke
Dense Fog Advisory	4

Nearby

Alerts in force now Tornadoes on record The radar archive 2008 2010

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.