Alert archive / Colorado / Garfield County

Weather alerts in Garfield County, Colorado, 2015

158 weather alerts in 2015, 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 2015. Tap one for its archive.

Alerts: 158
Warnings: 44
Watches: 29
Advisories: 62
Busiest month: April27 alerts
Busiest day: June 17, 20158 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, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	7	1	86%	2	50%	22 min
Flash flood warnings	1	0	100%	0

Each office's whole area, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Grand Junction, CO: tornado warnings	3	1	67%	3	33%	25 min
NWS Grand Junction, CO: severe thunderstorm warnings	45	7	84%	22	27%	20 min
NWS Grand Junction, CO: flash flood warnings	17	3	82%	19	16%	51 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 2, 3:09 PM MST	Winter Weather Advisory	GJT	32 hr
Jan 7, 1:56 AM MST	Dense Fog Advisory	GJT	8 hr
Jan 7, 10:05 AM MST	Dense Fog Advisory	GJT	115 min
Jan 9, 11:03 PM MST	Dense Fog Advisory	GJT	12 hr
Jan 10, 7:59 PM MST	Winter Weather Advisory	GJT	22 hr
Jan 11, 9:07 AM MST	Dense Fog Advisory	GJT	3 hr
Jan 11, 3:04 PM MST	Winter Storm Warning	GJT	51 hr
Jan 11, 3:04 PM MST	Winter Weather Advisory	GJT	51 hr
Jan 11, 6:31 PM MST	Dense Fog Advisory	GJT	16 hr
Jan 14, 4:56 AM MST	Dense Fog Advisory	GJT	4 hr
Jan 19, 11:38 PM MST	Winter Weather Advisory	GJT	9 hr
Jan 31, 12:30 AM MST	Dense Fog Advisory	GJT	9 hr
Feb 1, 7:47 PM MST	Winter Weather Advisory	GJT	37 hr
Feb 2, 9:15 PM MST	Winter Storm Watch	GJT	6 hr
Feb 3, 3:16 AM MST	Winter Storm Warning	GJT	42 hr
Feb 3, 3:16 AM MST	Winter Weather Advisory	GJT	17 hr
Feb 15, 10:27 AM MST	Winter Weather Advisory	GJT	32 hr
Feb 19, 4:57 AM MST	Winter Storm Watch	GJT	24 hr
Feb 20, 4:42 AM MST	Winter Storm Warning	GJT	4 days
Feb 20, 4:42 AM MST	Winter Weather Advisory	GJT	3 days
Feb 20, 4:47 PM MST	Winter Storm Watch	GJT	23 hr
Feb 25, 2:36 PM MST	Winter Storm Watch	GJT	24 hr
Feb 26, 2:12 PM MST	Winter Storm Warning	GJT	6 days
Feb 26, 2:12 PM MST	Winter Weather Advisory	GJT	3 days
Feb 27, 12:26 AM MST	Winter Weather Advisory	GJT	8 hr
Feb 27, 3:10 PM MST	Winter Storm Watch	GJT	14 hr
Feb 27, 9:14 PM MST	Winter Storm Warning	GJT	4 days
Feb 28, 4:46 AM MST	Winter Storm Watch	GJT	24 hr
Mar 2, 7:44 AM MST	Freezing Rain Advisory	GJT	3 hr
Mar 25, 3:16 PM MDT	Freeze Warning	GJT	16 hr
Apr 1, 2:05 PM MDT	Freeze Watch	GJT	13 hr
Apr 2, 3:34 AM MDT	Freeze Warning	GJT	29 hr
Apr 2, 11:14 AM MDT	Freeze Warning	GJT	46 hr
Apr 5, 2:40 PM MDT	Fire Weather Watch	GJT	23 hr
Apr 5, 2:40 PM MDT	Red Flag Warning	GJT	30 hr
Apr 6, 2:06 PM MDT	Red Flag Warning	GJT	31 hr
Apr 7, 4:32 AM MDT	Freeze Watch	GJT	23 hr
Apr 8, 3:21 AM MDT	Freeze Warning	GJT	29 hr
Apr 8, 10:23 AM MDT	Wind Advisory	GJT	9 hr
Apr 8, 10:37 AM MDT	Red Flag Warning	GJT	8 hr
Apr 12, 3:10 PM MDT	Fire Weather Watch	GJT	21 hr
Apr 13, 4:35 AM MDT	High Wind Watch	GJT	17 hr
Apr 13, 11:51 AM MDT	Red Flag Warning	GJT	33 hr
Apr 13, 2:56 PM MDT	Freeze Watch	GJT	36 hr
Apr 13, 2:56 PM MDT	High Wind Warning	GJT	36 hr
Apr 13, 2:56 PM MDT	Wind Advisory	GJT	36 hr
Apr 15, 3:05 AM MDT	Freeze Warning	GJT	30 hr
Apr 16, 4:11 AM MDT	Winter Storm Warning	GJT	68 hr
Apr 16, 4:11 AM MDT	Winter Weather Advisory	GJT	68 hr
Apr 16, 2:43 PM MDT	Wind Advisory	GJT	6 hr
Apr 17, 3:07 PM MDT	Freeze Warning	GJT	18 hr
Apr 18, 5:47 AM MDT	Dense Fog Advisory	GJT	4 hr
Apr 19, 4:10 AM MDT	Dense Fog Advisory	GJT	5 hr
Apr 25, 4:23 AM MDT	Winter Storm Watch	GJT	10 hr
Apr 25, 2:51 PM MDT	Winter Storm Warning	GJT	37 hr
Apr 25, 2:51 PM MDT	Winter Weather Advisory	GJT	37 hr
Apr 27, 7:38 AM MDT	Dense Fog Advisory	GJT	2 hr
May 6, 4:11 PM MDT	Flash Flood Warning	GJT	3 hr
May 6, 7:14 PM MDT	Areal Flood Advisory	GJT	3 hr
May 7, 3:15 PM MDT	Winter Storm Watch	GJT	36 hr
May 9, 3:14 AM MDT	Winter Storm Warning	GJT	32 hr
May 9, 3:14 AM MDT	Winter Weather Advisory	GJT	32 hr
May 13, 3:48 PM MDT	Winter Storm Watch	GJT	23 hr
May 14, 2:58 PM MDT	Winter Storm Warning	GJT	51 hr
May 14, 2:58 PM MDT	Winter Weather Advisory	GJT	66 hr
May 18, 12:19 PM MDT	Winter Weather Advisory	GJT	24 hr
May 18, 6:21 PM MDT	Special Weather Statement	GJT	69 min
May 20, 6:53 AM MDT	Dense Fog Advisory	GJT	2 hr
May 21, 4:15 AM MDT	Winter Weather Advisory	GJT	26 hr
May 22, 12:38 PM MDT	Severe Thunderstorm Warning	GJT	22 min
May 22, 1:16 PM MDT	Special Weather Statement	GJT	59 min
May 27, 7:16 PM MDT	Special Weather Statement	GJT	44 min
May 28, 2:22 PM MDT	Areal Flood Advisory	GJT	5 hr
Jun 3, 5:55 PM MDT	Flash Flood Watch	GJT	5 days
Jun 9, 2:46 PM MDT	Flash Flood Watch	GJT	3 days
Jun 11, 11:17 AM MDT	Areal Flood Advisory	GJT	6 hr
Jun 13, 1:10 PM MDT	Areal Flood Advisory	GJT	3 hr
Jun 16, 4:36 PM MDT	Special Weather Statement	GJT	39 min
Jun 16, 5:23 PM MDT	Special Weather Statement	GJT	52 min
Jun 16, 5:52 PM MDT	Severe Thunderstorm Warning	GJT	23 min
Jun 16, 6:09 PM MDT	Special Weather Statement	GJT	36 min
Jun 16, 6:13 PM MDT	Severe Thunderstorm Warning	GJT	32 min
Jun 16, 6:15 PM MDT	Severe Thunderstorm Warning	GJT	30 min
Jun 16, 6:38 PM MDT	Severe Thunderstorm Warning	GJT	37 min
Jun 16, 6:45 PM MDT	Severe Thunderstorm Warning	GJT	30 min
Jun 16, 7:13 PM MDT	Severe Thunderstorm Warning	GJT	32 min
Jun 16, 7:42 PM MDT	Special Weather Statement	GJT	33 min
Jun 16, 8:08 PM MDT	Special Weather Statement	GJT	37 min
Jul 4, 1:58 PM MDT	Areal Flood Advisory	GJT	3 hr
Jul 6, 2:20 PM MDT	Areal Flood Advisory	GJT	3 hr
Jul 8, 2:39 PM MDT	Special Weather Statement	GJT	51 min
Jul 11, 2:14 PM MDT	Special Weather Statement	GJT	46 min
Jul 15, 4:25 PM MDT	Mesoscale Discussion	SPC	65 min
Jul 17, 4:19 AM MDT	Red Flag Warning	GJT	16 hr
Jul 18, 6:51 PM MDT	Special Weather Statement	GJT	39 min
Jul 25, 2:52 PM MDT	Fire Weather Watch	GJT	23 hr
Jul 26, 1:48 PM MDT	Red Flag Warning	GJT	30 hr
Jul 27, 1:55 PM MDT	Wind Advisory	GJT	6 hr
Aug 2, 4:52 AM MDT	Flash Flood Watch	GJT	18 hr
Aug 2, 6:17 PM MDT	Special Weather Statement	GJT	43 min
Aug 5, 4:30 AM MDT	Red Flag Warning	GJT	16 hr
Aug 17, 5:26 PM MDT	Special Weather Statement	GJT	49 min
Aug 17, 5:55 PM MDT	Special Weather Statement	GJT	20 min
Aug 20, 3:00 PM MDT	Fire Weather Watch	GJT	9 hr
Aug 20, 3:00 PM MDT	Red Flag Warning	GJT	29 hr
Aug 27, 4:39 PM MDT	Special Weather Statement	GJT	36 min
Aug 27, 9:09 PM MDT	Special Weather Statement	GJT	36 min
Sep 1, 7:30 PM MDT	Special Weather Statement	GJT	30 min
Sep 1, 7:54 PM MDT	Special Weather Statement	GJT	36 min
Sep 1, 8:29 PM MDT	Special Weather Statement	GJT	31 min
Sep 28, 9:10 PM MDT	Special Weather Statement	GJT	20 min
Oct 2, 2:01 PM MDT	Wind Advisory	GJT	7 hr
Oct 5, 9:03 AM MDT	Flash Flood Watch	GJT	15 hr
Oct 6, 6:31 AM MDT	Dense Fog Advisory	GJT	92 min
Oct 12, 4:10 AM MDT	Freeze Warning	GJT	29 hr
Oct 19, 10:49 PM MDT	Special Weather Statement	GJT	26 min
Oct 19, 11:15 PM MDT	Special Weather Statement	GJT	30 min
Oct 21, 1:44 PM MDT	Winter Weather Advisory	GJT	46 hr
Oct 22, 2:50 PM MDT	Freeze Watch	GJT	22 hr
Oct 23, 12:38 PM MDT	Freeze Warning	GJT	20 hr
Oct 26, 3:02 PM MDT	Freeze Watch	GJT	21 hr
Oct 27, 12:11 PM MDT	Freeze Warning	GJT	21 hr
Oct 28, 7:33 AM MDT	Dense Fog Advisory	GJT	87 min
Nov 2, 4:30 AM MST	Winter Storm Watch	GJT	31 hr
Nov 3, 4:50 AM MST	Winter Storm Warning	GJT	61 hr
Nov 3, 4:51 AM MST	Wind Advisory	GJT	13 hr
Nov 3, 11:22 AM MST	Winter Storm Watch	GJT	22 hr
Nov 4, 9:07 AM MST	Winter Weather Advisory	GJT	30 hr
Nov 4, 2:18 PM MST	Freeze Watch	GJT	19 hr
Nov 5, 9:31 AM MST	Freeze Warning	GJT	23 hr
Nov 6, 8:27 AM MST	Freeze Warning	GJT	25 hr
Nov 9, 4:06 PM MST	Winter Storm Warning	GJT	44 hr
Nov 9, 4:06 PM MST	Winter Weather Advisory	GJT	44 hr
Nov 10, 4:28 PM MST	Winter Weather Advisory	GJT	13 hr
Nov 14, 1:36 PM MST	Winter Storm Watch	GJT	27 hr
Nov 15, 1:04 AM MST	Winter Storm Warning	GJT	55 hr
Nov 15, 4:00 AM MST	Winter Weather Advisory	GJT	52 hr
Nov 18, 9:00 AM MST	Wind Advisory	GJT	8 hr
Nov 19, 4:26 AM MST	Winter Weather Advisory	GJT	38 hr
Nov 26, 9:13 AM MST	Winter Weather Advisory	GJT	48 hr
Nov 28, 9:34 PM MST	Winter Weather Advisory	GJT	8 hr
Dec 10, 3:26 PM MST	Winter Storm Warning	GJT	51 hr
Dec 10, 3:26 PM MST	Winter Weather Advisory	GJT	57 hr
Dec 12, 8:19 AM MST	Dense Fog Advisory	GJT	88 min
Dec 13, 3:33 PM MST	Winter Weather Advisory	GJT	53 hr
Dec 14, 1:40 PM MST	Winter Storm Warning	GJT	43 hr
Dec 16, 9:00 AM MST	Winter Weather Advisory	GJT	23 hr
Dec 19, 7:59 AM MST	Dense Fog Advisory	GJT	3 hr
Dec 20, 5:00 AM MST	Winter Storm Watch	GJT	32 hr
Dec 21, 5:14 AM MST	Winter Storm Warning	GJT	63 hr
Dec 21, 7:14 AM MST	Dense Fog Advisory	GJT	3 hr
Dec 22, 12:18 AM MST	Dense Fog Advisory	GJT	6 hr
Dec 23, 3:11 AM MST	Dense Fog Advisory	GJT	7 hr
Dec 23, 2:09 PM MST	Winter Storm Watch	GJT	25 hr
Dec 23, 2:09 PM MST	Winter Storm Warning	GJT	67 hr
Dec 23, 2:09 PM MST	Winter Weather Advisory	GJT	67 hr
Dec 30, 1:26 PM MST	Winter Weather Advisory	GJT	21 hr
Dec 31, 7:38 AM MST	Dense Fog Advisory	GJT	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
Severe Thunderstorm Warning	7
Mesoscale Discussion	1
Special Weather Statement	22
Flooding
Flash Flood Warning	1
Flash Flood Watch	4
Areal Flood Advisory	6
Winter
Winter Storm Warning	16
Winter Storm Watch	14
Freezing Rain Advisory	1
Winter Weather Advisory	29
Cold
Freeze Warning	11
Freeze Watch	6
Wind and dust
High Wind Warning	1
High Wind Watch	1
Wind Advisory	7
Fire
Red Flag Warning	8
Fire Weather Watch	4
Fog and smoke
Dense Fog Advisory	19

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast 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. Warning verification from the Mesonet's Cow. Rebuilt daily.