Alert archive / Colorado / Garfield County

Weather alerts in Garfield County, Colorado, 2011

197 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Garfield County and its neighbors

Each county as a circle sized by its count in 2011. Tap one for its archive.

Alerts: 197
Warnings: 60
Watches: 46
Advisories: 78
Busiest month: April35 alerts
Busiest day: June 30, 20119 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Garfield County, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning
Tornado warnings	0			0
Severe thunderstorm warnings	2	0	100%	3	0%
Flash flood warnings	4	0	100%	2	0%

Each office's whole area, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Grand Junction, CO: tornado warnings	2	1	50%	1	100%	6 min
NWS Grand Junction, CO: severe thunderstorm warnings	30	6	80%	26	42%	18 min
NWS Grand Junction, CO: flash flood warnings	37	3	92%	24	13%	28 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

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	Lasted
Jan 7, 8:21 PM MST	Winter Storm Watch	GJT	6 hr
Jan 8, 2:42 AM MST	Winter Weather Advisory	GJT	49 hr
Jan 9, 12:15 AM MST	Winter Storm Warning	GJT	21 hr
Jan 14, 2:38 PM MST	Winter Storm Watch	GJT	26 hr
Jan 15, 4:56 AM MST	Winter Storm Warning	GJT	3 days
Jan 17, 8:32 AM MST	Freezing Rain Advisory	GJT	2 hr
Jan 18, 2:55 PM MST	Winter Weather Advisory	GJT	30 hr
Jan 21, 4:06 AM MST	Winter Weather Advisory	GJT	42 hr
Jan 30, 3:35 AM MST	Winter Weather Advisory	GJT	3 days
Jan 31, 3:41 AM MST	Wind Chill Warning	GJT	51 hr
Feb 3, 2:54 PM MST	Winter Storm Watch	GJT	13 hr
Feb 4, 3:29 AM MST	Winter Storm Warning	GJT	65 hr
Feb 6, 4:26 AM MST	Winter Storm Watch	GJT	10 hr
Feb 6, 2:28 PM MST	Winter Storm Warning	GJT	52 hr
Feb 6, 2:28 PM MST	Winter Weather Advisory	GJT	54 hr
Feb 15, 2:59 PM MST	Blizzard Watch	GJT	14 hr
Feb 15, 2:59 PM MST	Winter Storm Watch	GJT	14 hr
Feb 15, 3:00 PM MST	High Wind Warning	GJT	33 hr
Feb 16, 5:12 AM MST	Blizzard Warning	GJT	23 hr
Feb 16, 5:12 AM MST	Winter Storm Warning	GJT	39 hr
Feb 16, 5:12 AM MST	Winter Weather Advisory	GJT	39 hr
Feb 16, 5:29 AM MST	Wind Advisory	GJT	19 hr
Feb 17, 3:04 PM MST	Winter Storm Watch	GJT	37 hr
Feb 18, 1:04 PM MST	Winter Storm Warning	GJT	59 hr
Feb 19, 3:42 AM MST	Winter Weather Advisory	GJT	31 hr
Feb 23, 2:34 PM MST	Winter Storm Watch	GJT	13 hr
Feb 24, 3:56 AM MST	Winter Storm Watch	GJT	11 hr
Feb 24, 3:56 AM MST	Winter Storm Warning	GJT	3 days
Feb 24, 3:56 AM MST	Winter Weather Advisory	GJT	3 days
Mar 2, 11:40 AM MST	Winter Weather Advisory	GJT	51 hr
Mar 5, 4:12 AM MST	Winter Weather Advisory	GJT	50 hr
Mar 5, 2:15 PM MST	Winter Storm Watch	GJT	38 hr
Mar 6, 3:01 PM MST	Winter Storm Warning	GJT	51 hr
Mar 7, 4:02 AM MST	Winter Weather Advisory	GJT	32 hr
Mar 15, 3:57 AM MDT	Winter Storm Watch	GJT	19 hr
Mar 15, 3:11 PM MDT	Winter Storm Warning	GJT	63 hr
Mar 16, 3:16 PM MDT	Winter Weather Advisory	GJT	39 hr
Mar 18, 9:47 PM MDT	Red Flag Warning	GJT	22 hr
Mar 19, 3:12 AM MDT	Fire Weather Watch	GJT	24 hr
Mar 20, 3:29 AM MDT	Red Flag Warning	GJT	18 hr
Mar 20, 2:35 PM MDT	Wind Advisory	GJT	30 hr
Mar 20, 3:02 PM MDT	Winter Weather Advisory	GJT	57 hr
Mar 20, 3:17 PM MDT	Fire Weather Watch	GJT	13 hr
Mar 21, 4:00 AM MDT	Red Flag Warning	GJT	17 hr
Mar 24, 3:16 PM MDT	Winter Weather Advisory	GJT	36 hr
Mar 26, 4:22 AM MDT	Winter Weather Advisory	GJT	34 hr
Mar 27, 3:36 PM MDT	Winter Weather Advisory	GJT	37 hr
Mar 28, 9:46 AM MDT	Winter Storm Warning	GJT	19 hr
Mar 29, 3:00 PM MDT	Winter Weather Advisory	GJT	45 hr
Mar 31, 3:04 PM MDT	Fire Weather Watch	GJT	24 hr
Apr 1, 3:08 PM MDT	Red Flag Warning	GJT	29 hr
Apr 1, 3:16 PM MDT	Winter Storm Watch	GJT	13 hr
Apr 2, 4:25 AM MDT	Winter Storm Warning	GJT	48 hr
Apr 2, 4:25 AM MDT	Winter Weather Advisory	GJT	48 hr
Apr 6, 3:15 AM MDT	Winter Weather Advisory	GJT	33 hr
Apr 6, 9:41 AM MDT	Winter Storm Warning	GJT	9 hr
Apr 8, 4:40 AM MDT	Winter Storm Watch	GJT	22 hr
Apr 8, 10:01 AM MDT	Winter Storm Warning	GJT	62 hr
Apr 8, 10:01 AM MDT	Winter Weather Advisory	GJT	62 hr
Apr 13, 3:03 AM MDT	Winter Weather Advisory	GJT	39 hr
Apr 14, 2:47 PM MDT	Freeze Warning	GJT	18 hr
Apr 18, 3:31 AM MDT	Winter Storm Warning	GJT	38 hr
Apr 18, 3:31 AM MDT	Winter Weather Advisory	GJT	38 hr
Apr 21, 2:53 AM MDT	Winter Weather Advisory	GJT	7 hr
Apr 21, 10:09 AM MDT	Wind Advisory	GJT	11 hr
Apr 21, 10:12 AM MDT	Winter Weather Advisory	GJT	18 hr
Apr 21, 4:52 PM MDT	Mesoscale Discussion	SPC	53 min
Apr 22, 4:30 AM MDT	Winter Storm Watch	GJT	11 hr
Apr 22, 3:00 PM MDT	Winter Storm Warning	GJT	63 hr
Apr 23, 10:35 AM MDT	Winter Weather Advisory	GJT	52 hr
Apr 25, 5:35 AM MDT	Freeze Watch	GJT	4 hr
Apr 25, 9:55 AM MDT	Freeze Warning	GJT	47 hr
Apr 25, 3:00 PM MDT	Winter Storm Warning	GJT	33 hr
Apr 25, 3:00 PM MDT	Winter Weather Advisory	GJT	33 hr
Apr 26, 2:05 PM MDT	Freeze Watch	GJT	17 hr
Apr 27, 6:51 AM MDT	Freeze Warning	GJT	26 hr
Apr 28, 2:37 PM MDT	Freeze Watch	GJT	18 hr
Apr 28, 2:45 PM MDT	Winter Weather Advisory	GJT	41 hr
Apr 29, 4:00 AM MDT	Wind Advisory	GJT	17 hr
Apr 29, 8:55 AM MDT	Freeze Watch	GJT	24 hr
Apr 29, 8:55 AM MDT	Freeze Warning	GJT	24 hr
Apr 29, 1:21 PM MDT	Winter Storm Warning	GJT	19 hr
Apr 30, 9:00 AM MDT	Freeze Watch	GJT	30 hr
Apr 30, 9:00 AM MDT	Freeze Warning	GJT	24 hr
Apr 30, 2:13 PM MDT	Winter Weather Advisory	GJT	34 hr
May 1, 2:56 PM MDT	Freeze Watch	GJT	24 hr
May 1, 2:56 PM MDT	Freeze Warning	GJT	18 hr
May 2, 2:37 PM MDT	Freeze Warning	GJT	18 hr
May 4, 2:13 PM MDT	Freeze Warning	GJT	16 hr
May 4, 9:21 PM MDT	Fire Weather Watch	GJT	15 hr
May 4, 9:21 PM MDT	Fire Weather Watch	GJT	26 hr
May 6, 2:34 PM MDT	Fire Weather Watch	GJT	15 hr
May 6, 2:34 PM MDT	Red Flag Warning	GJT	31 hr
May 6, 3:00 PM MDT	Red Flag Warning	GJT	6 hr
May 7, 5:16 AM MDT	Red Flag Warning	GJT	40 hr
May 10, 3:48 AM MDT	Winter Storm Warning	GJT	44 hr
May 10, 3:48 AM MDT	Winter Weather Advisory	GJT	44 hr
May 11, 10:01 AM MDT	Areal Flood Advisory	GJT	6 hr
May 15, 4:32 AM MDT	Fire Weather Watch	GJT	10 hr
May 15, 2:40 PM MDT	Red Flag Warning	GJT	29 hr
May 17, 3:00 PM MDT	Winter Weather Advisory	GJT	17 hr
May 18, 6:17 AM MDT	Winter Weather Advisory	GJT	8 hr
May 18, 2:01 PM MDT	Winter Storm Warning	GJT	58 hr
May 21, 2:02 AM MDT	Winter Weather Advisory	GJT	10 hr
May 26, 4:13 AM MDT	Wind Advisory	GJT	15 hr
May 28, 4:33 AM MDT	Wind Advisory	GJT	40 hr
May 29, 2:55 PM MDT	Freeze Watch	GJT	12 hr
May 30, 3:21 AM MDT	Freeze Warning	GJT	29 hr
May 31, 3:01 PM MDT	Wind Advisory	GJT	52 hr
Jun 6, 4:39 AM MDT	Wind Advisory	GJT	16 hr
Jun 8, 6:35 PM MDT	Areal Flood Advisory	GJT	5 days
Jun 13, 2:19 PM MDT	River Flood Advisory	GJT	50 hr
Jun 14, 2:15 PM MDT	Fire Weather Watch	GJT	24 hr
Jun 15, 2:02 PM MDT	Fire Weather Watch	GJT	24 hr
Jun 15, 2:02 PM MDT	Fire Weather Watch	GJT	48 hr
Jun 15, 2:02 PM MDT	Red Flag Warning	GJT	32 hr
Jun 15, 2:14 PM MDT	River Flood Warning	GJT	44 hr
Jun 17, 10:08 AM MDT	River Flood Advisory	GJT	50 hr
Jun 19, 2:03 PM MDT	Winter Weather Advisory	GJT	25 hr
Jun 23, 3:25 AM MDT	Fire Weather Watch	GJT	11 hr
Jun 23, 2:19 PM MDT	Red Flag Warning	GJT	55 hr
Jun 23, 4:14 PM MDT	River Flood Advisory	GJT	43 hr
Jun 25, 8:44 AM MDT	River Flood Warning	GJT	3 days
Jun 25, 2:53 PM MDT	Red Flag Warning	GJT	30 hr
Jun 26, 3:02 PM MDT	Fire Weather Watch	GJT	44 hr
Jun 27, 2:44 PM MDT	Red Flag Warning	GJT	30 hr
Jun 28, 11:25 AM MDT	Red Flag Warning	GJT	34 hr
Jun 28, 11:47 AM MDT	River Flood Advisory	GJT	4 days
Jun 29, 11:01 AM MDT	Wind Advisory	GJT	10 hr
Jun 29, 3:19 PM MDT	Special Weather Statement	GJT	41 min
Jun 29, 6:22 PM MDT	Special Weather Statement	GJT	38 min
Jun 30, 8:33 AM MDT	Special Weather Statement	GJT	42 min
Jun 30, 8:51 AM MDT	Mesoscale Discussion	SPC	54 min
Jun 30, 9:06 AM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 30, 9:13 AM MDT	Special Weather Statement	GJT	47 min
Jun 30, 12:40 PM MDT	Special Weather Statement	GJT	65 min
Jun 30, 12:41 PM MDT	Severe Thunderstorm Warning	GJT	49 min
Jun 30, 1:18 PM MDT	Areal Flood Advisory	GJT	3 hr
Jun 30, 1:49 PM MDT	Mesoscale Discussion	SPC	116 min
Jul 8, 3:11 PM MDT	Severe Thunderstorm Warning	GJT	49 min
Jul 10, 3:45 PM MDT	Flash Flood Warning	GJT	3 hr
Jul 10, 6:52 PM MDT	Flash Flood Warning	GJT	82 min
Jul 11, 3:21 AM MDT	Flash Flood Watch	GJT	45 hr
Jul 11, 11:52 PM MDT	Areal Flood Advisory	GJT	3 hr
Jul 12, 4:11 PM MDT	Areal Flood Advisory	GJT	3 hr
Jul 12, 8:03 PM MDT	Areal Flood Advisory	GJT	2 hr
Jul 17, 4:25 PM MDT	Flash Flood Warning	GJT	112 min
Jul 18, 6:03 PM MDT	Flash Flood Warning	GJT	3 hr
Jul 18, 7:20 PM MDT	Areal Flood Advisory	GJT	3 hr
Jul 19, 2:24 PM MDT	Areal Flood Advisory	GJT	2 hr
Jul 19, 4:48 PM MDT	Areal Flood Advisory	GJT	4 hr
Jul 25, 9:03 PM MDT	Flash Flood Watch	GJT	25 hr
Aug 2, 4:40 AM MDT	Flash Flood Watch	GJT	16 hr
Aug 2, 3:59 PM MDT	Areal Flood Advisory	GJT	93 min
Aug 2, 4:49 PM MDT	Areal Flood Advisory	GJT	72 min
Aug 3, 7:34 PM MDT	Areal Flood Advisory	GJT	89 min
Aug 4, 8:50 PM MDT	Areal Flood Advisory	GJT	3 hr
Aug 16, 1:48 PM MDT	Special Weather Statement	GJT	57 min
Aug 16, 1:48 PM MDT	Mesoscale Discussion	SPC	117 min
Aug 27, 2:39 PM MDT	Special Weather Statement	GJT	36 min
Aug 27, 4:08 PM MDT	Special Weather Statement	GJT	52 min
Aug 27, 4:53 PM MDT	Special Weather Statement	GJT	67 min
Sep 6, 6:06 PM MDT	Areal Flood Advisory	GJT	3 hr
Sep 14, 5:00 AM MDT	Winter Weather Advisory	GJT	24 hr
Oct 4, 4:51 AM MDT	Winter Storm Watch	GJT	33 hr
Oct 5, 5:34 AM MDT	Winter Storm Warning	GJT	39 hr
Oct 5, 8:33 AM MDT	Dense Fog Advisory	GJT	87 min
Oct 5, 1:45 PM MDT	Winter Weather Advisory	GJT	31 hr
Oct 5, 9:35 PM MDT	Freeze Watch	GJT	42 hr
Oct 5, 9:35 PM MDT	Freeze Watch	GJT	16 hr
Oct 6, 1:28 PM MDT	Freeze Warning	GJT	20 hr
Oct 16, 2:44 PM MDT	Winter Weather Advisory	GJT	24 hr
Oct 23, 10:55 PM MDT	Winter Storm Watch	GJT	24 hr
Oct 24, 10:52 PM MDT	Winter Storm Warning	GJT	46 hr
Oct 24, 10:52 PM MDT	Winter Weather Advisory	GJT	37 hr
Oct 31, 4:06 AM MDT	Winter Storm Watch	GJT	8 hr
Oct 31, 12:34 PM MDT	Winter Weather Advisory	GJT	47 hr
Nov 3, 4:37 AM MDT	Winter Storm Watch	GJT	17 hr
Nov 3, 2:20 PM MDT	Winter Storm Warning	GJT	58 hr
Nov 3, 9:55 PM MDT	Winter Weather Advisory	GJT	50 hr
Nov 6, 2:55 PM MST	Winter Weather Advisory	GJT	33 hr
Nov 10, 3:04 PM MST	Blizzard Watch	GJT	13 hr
Nov 10, 3:04 PM MST	Winter Storm Watch	GJT	24 hr
Nov 11, 3:39 AM MST	Blizzard Warning	GJT	66 hr
Nov 11, 3:39 AM MST	Winter Storm Warning	GJT	66 hr
Nov 11, 3:00 PM MST	Winter Weather Advisory	GJT	51 hr
Nov 14, 6:47 AM MST	Dense Fog Advisory	GJT	2 hr
Nov 18, 4:31 AM MST	Winter Weather Advisory	GJT	49 hr
Nov 19, 1:44 PM MST	Winter Storm Warning	GJT	16 hr
Nov 20, 3:07 AM MST	Winter Storm Watch	GJT	9 hr
Nov 29, 3:06 PM MST	Winter Weather Advisory	GJT	47 hr
Dec 2, 4:24 AM MST	Winter Storm Warning	GJT	43 hr
Dec 2, 4:24 AM MST	Winter Weather Advisory	GJT	43 hr
Dec 4, 2:57 PM MST	Wind Chill Advisory	GJT	13 hr
Dec 12, 2:10 AM MST	Winter Weather Advisory	GJT	60 hr
Dec 20, 3:37 PM MST	Winter Weather Advisory	GJT	52 hr
Dec 31, 3:44 AM MST	Wind Advisory	GJT	8 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
Severe Thunderstorm Warning	2
Severe Thunderstorm Watch	1
Mesoscale Discussion	4
Special Weather Statement	9
Flooding
Flash Flood Warning	4
River Flood Warning	2
Flash Flood Watch	3
Areal Flood Advisory	14
River Flood Advisory	4
Winter
Blizzard Warning	2
Winter Storm Warning	25
Blizzard Watch	2
Winter Storm Watch	19
Freezing Rain Advisory	1
Winter Weather Advisory	46
Cold
Freeze Warning	10
Wind Chill Warning	1
Freeze Watch	9
Wind Chill Advisory	1
Wind and dust
High Wind Warning	1
Wind Advisory	10
Fire
Red Flag Warning	13
Fire Weather Watch	12
Fog and smoke
Dense Fog Advisory	2

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2010 2012

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.