Alert archive / Colorado / Garfield County

Weather alerts in Garfield County, Colorado, 2009

133 weather alerts in 2009, 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 2009. Tap one for its archive.

Alerts: 133
Warnings: 45
Watches: 28
Advisories: 58
Busiest month: March24 alerts
Busiest day: September 30, 20095 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, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning
Tornado warnings	0			0
Severe thunderstorm warnings	2	0	100%	1	0%
Flash flood warnings	3	0	100%	0

Each office's whole area, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Grand Junction, CO: tornado warnings	0			2	0%
NWS Grand Junction, CO: severe thunderstorm warnings	29	8	72%	25	60%	18 min
NWS Grand Junction, CO: flash flood warnings	11	1	91%	2	50%	0 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, 4:41 AM MST	Winter Weather Advisory	GJT	67 hr
Jan 4, 3:29 PM MST	Winter Storm Watch	GJT	13 hr
Jan 5, 3:59 AM MST	Winter Weather Advisory	GJT	62 hr
Jan 8, 4:04 AM MST	Winter Weather Advisory	GJT	38 hr
Jan 12, 12:59 AM MST	Winter Weather Advisory	GJT	16 hr
Jan 22, 4:48 AM MST	Winter Storm Watch	GJT	8 hr
Jan 22, 1:00 PM MST	Winter Storm Warning	GJT	5 days
Jan 22, 3:46 PM MST	Winter Weather Advisory	GJT	60 hr
Jan 24, 8:09 PM MST	Dense Fog Advisory	GJT	13 hr
Jan 25, 3:57 AM MST	Winter Storm Watch	GJT	11 hr
Jan 25, 3:57 AM MST	Winter Weather Advisory	GJT	58 hr
Jan 25, 9:42 AM MST	Dense Fog Advisory	GJT	2 hr
Jan 27, 3:17 PM MST	Winter Storm Warning	GJT	37 hr
Feb 6, 4:00 AM MST	Winter Storm Watch	GJT	22 hr
Feb 7, 2:23 AM MST	Winter Weather Advisory	GJT	52 hr
Feb 8, 3:06 PM MST	Winter Weather Advisory	GJT	48 hr
Feb 9, 10:35 AM MST	Winter Storm Warning	GJT	29 hr
Feb 11, 9:55 AM MST	Winter Weather Advisory	GJT	19 hr
Feb 12, 4:30 AM MST	Winter Weather Advisory	GJT	32 hr
Feb 13, 12:29 PM MST	Winter Storm Watch	GJT	3 hr
Feb 13, 3:15 PM MST	Winter Storm Warning	GJT	37 hr
Feb 15, 3:42 PM MST	Winter Storm Watch	GJT	21 hr
Feb 16, 4:34 AM MST	Winter Storm Warning	GJT	64 hr
Feb 16, 4:34 AM MST	Winter Weather Advisory	GJT	59 hr
Feb 23, 4:15 AM MST	Winter Weather Advisory	GJT	26 hr
Feb 24, 7:51 AM MST	Dense Fog Advisory	GJT	3 hr
Mar 4, 4:38 AM MST	Wind Advisory	GJT	16 hr
Mar 5, 3:11 PM MST	Winter Storm Watch	GJT	13 hr
Mar 5, 3:11 PM MST	Winter Storm Warning	GJT	57 hr
Mar 6, 4:30 AM MST	Winter Weather Advisory	GJT	44 hr
Mar 8, 3:38 PM MDT	Winter Storm Watch	GJT	12 hr
Mar 9, 4:00 AM MDT	Winter Storm Warning	GJT	32 hr
Mar 21, 4:46 AM MDT	Winter Storm Watch	GJT	24 hr
Mar 21, 3:35 PM MDT	Winter Storm Warning	GJT	68 hr
Mar 21, 3:35 PM MDT	Winter Weather Advisory	GJT	68 hr
Mar 22, 3:43 PM MDT	Wind Advisory	GJT	5 hr
Mar 22, 6:24 PM MDT	High Wind Warning	GJT	3 hr
Mar 24, 3:32 PM MDT	Winter Storm Watch	GJT	23 hr
Mar 24, 3:32 PM MDT	Winter Weather Advisory	GJT	23 hr
Mar 25, 4:17 AM MDT	Winter Storm Warning	GJT	54 hr
Mar 25, 2:47 PM MDT	Winter Weather Advisory	GJT	43 hr
Mar 26, 8:36 PM MDT	Freeze Warning	GJT	13 hr
Mar 27, 2:31 PM MDT	Freeze Warning	GJT	19 hr
Mar 28, 3:12 PM MDT	High Wind Watch	GJT	13 hr
Mar 28, 3:13 PM MDT	Winter Weather Advisory	GJT	55 hr
Mar 29, 4:30 AM MDT	Wind Advisory	GJT	18 hr
Mar 29, 11:17 AM MDT	High Wind Warning	GJT	11 hr
Mar 30, 2:51 PM MDT	Freeze Warning	GJT	19 hr
Mar 31, 4:33 AM MDT	Winter Weather Advisory	GJT	40 hr
Mar 31, 9:43 AM MDT	Winter Storm Warning	GJT	35 hr
Apr 1, 3:55 PM MDT	Freeze Warning	GJT	18 hr
Apr 2, 4:40 AM MDT	Winter Storm Watch	GJT	11 hr
Apr 2, 3:45 PM MDT	Winter Storm Warning	GJT	56 hr
Apr 2, 3:45 PM MDT	Winter Weather Advisory	GJT	56 hr
Apr 4, 4:09 PM MDT	Freeze Warning	GJT	18 hr
Apr 5, 3:12 PM MDT	Freeze Warning	GJT	18 hr
Apr 7, 3:19 PM MDT	Winter Storm Watch	GJT	8 hr
Apr 7, 11:27 PM MDT	Winter Weather Advisory	GJT	49 hr
Apr 8, 12:39 AM MDT	Wind Advisory	GJT	20 hr
Apr 10, 3:36 PM MDT	Winter Weather Advisory	GJT	50 hr
Apr 14, 12:31 PM MDT	Winter Storm Watch	GJT	16 hr
Apr 14, 12:31 PM MDT	Winter Storm Warning	GJT	4 days
Apr 15, 8:37 AM MDT	Wind Advisory	GJT	11 hr
Apr 24, 10:05 AM MDT	Red Flag Warning	GJT	11 hr
Apr 24, 3:23 PM MDT	Winter Weather Advisory	GJT	63 hr
Apr 25, 4:19 AM MDT	Wind Advisory	GJT	17 hr
Apr 25, 3:10 PM MDT	Winter Storm Warning	GJT	39 hr
Apr 28, 1:51 PM MDT	Red Flag Warning	GJT	6 hr
Apr 29, 2:46 PM MDT	Fire Weather Watch	GJT	7 hr
Apr 29, 9:59 PM MDT	Red Flag Warning	GJT	22 hr
May 12, 3:47 AM MDT	Wind Advisory	GJT	16 hr
May 18, 2:51 PM MDT	Fire Weather Watch	GJT	23 hr
May 19, 6:41 AM MDT	Red Flag Warning	GJT	13 hr
May 19, 2:07 PM MDT	Red Flag Warning	GJT	30 hr
May 19, 3:33 PM MDT	Severe Thunderstorm Warning	GJT	17 min
May 23, 11:32 PM MDT	Areal Flood Advisory	GJT	3 hr
May 24, 2:01 AM MDT	Flash Flood Watch	GJT	20 hr
May 25, 3:58 AM MDT	Flash Flood Watch	GJT	16 hr
Jun 2, 8:40 PM MDT	Areal Flood Advisory	GJT	3 hr
Jun 5, 3:56 AM MDT	Wind Advisory	GJT	17 hr
Jun 18, 5:15 PM MDT	Areal Flood Advisory	GJT	5 hr
Jun 21, 1:28 PM MDT	Mesoscale Discussion	SPC	92 min
Jun 26, 8:29 AM MDT	Flash Flood Watch	GJT	12 hr
Jun 26, 10:51 AM MDT	Areal Flood Advisory	GJT	3 hr
Jul 2, 2:59 PM MDT	Areal Flood Advisory	GJT	3 hr
Jul 3, 1:08 PM MDT	Areal Flood Advisory	GJT	3 hr
Jul 3, 2:36 PM MDT	Flash Flood Warning	GJT	3 hr
Jul 4, 1:27 PM MDT	Flash Flood Warning	GJT	3 hr
Jul 4, 2:53 PM MDT	Flash Flood Warning	GJT	3 hr
Jul 4, 6:24 PM MDT	Severe Thunderstorm Warning	GJT	36 min
Jul 8, 6:20 AM MDT	Red Flag Warning	GJT	38 hr
Jul 26, 12:50 PM MDT	Areal Flood Advisory	GJT	3 hr
Jul 26, 12:58 PM MDT	Areal Flood Advisory	GJT	3 hr
Jul 26, 5:40 PM MDT	Areal Flood Advisory	GJT	3 hr
Aug 3, 3:10 PM MDT	Fire Weather Watch	GJT	70 hr
Aug 6, 12:55 PM MDT	Red Flag Warning	GJT	33 hr
Aug 30, 5:58 AM MDT	Fire Weather Watch	GJT	9 hr
Aug 30, 2:43 PM MDT	Red Flag Warning	GJT	29 hr
Sep 14, 5:27 PM MDT	Areal Flood Advisory	GJT	3 hr
Sep 15, 12:46 PM MDT	Mesoscale Discussion	SPC	89 min
Sep 19, 3:17 PM MDT	Freeze Watch	GJT	36 hr
Sep 21, 2:51 AM MDT	Freeze Warning	GJT	30 hr
Sep 27, 3:05 PM MDT	Fire Weather Watch	GJT	24 hr
Sep 28, 3:28 PM MDT	Red Flag Warning	GJT	36 hr
Sep 30, 3:47 AM MDT	Freeze Watch	GJT	11 hr
Sep 30, 3:47 AM MDT	Wind Advisory	GJT	16 hr
Sep 30, 3:54 AM MDT	Winter Weather Advisory	GJT	32 hr
Sep 30, 7:18 AM MDT	High Wind Warning	GJT	12 hr
Sep 30, 2:55 PM MDT	Freeze Warning	GJT	18 hr
Oct 1, 7:22 PM MDT	Freeze Warning	GJT	14 hr
Oct 3, 3:09 PM MDT	Wind Advisory	GJT	30 hr
Oct 26, 3:52 PM MDT	Winter Storm Watch	GJT	13 hr
Oct 26, 3:52 PM MDT	Winter Storm Warning	GJT	3 days
Oct 27, 5:13 AM MDT	Winter Weather Advisory	GJT	48 hr
Nov 11, 3:42 PM MST	Winter Storm Watch	GJT	13 hr
Nov 12, 4:48 AM MST	Winter Storm Warning	GJT	3 days
Nov 12, 4:48 AM MST	Winter Weather Advisory	GJT	3 days
Nov 22, 2:50 PM MST	Winter Weather Advisory	GJT	29 hr
Dec 4, 3:26 PM MST	Winter Weather Advisory	GJT	61 hr
Dec 5, 4:26 AM MST	Winter Storm Watch	GJT	45 hr
Dec 5, 4:07 PM MST	Blizzard Warning	GJT	71 hr
Dec 6, 2:20 PM MST	Winter Storm Warning	GJT	49 hr
Dec 8, 3:25 PM MST	Winter Weather Advisory	GJT	35 hr
Dec 11, 3:06 PM MST	Winter Storm Watch	GJT	13 hr
Dec 12, 4:05 AM MST	Winter Storm Warning	GJT	53 hr
Dec 12, 4:05 AM MST	Winter Weather Advisory	GJT	53 hr
Dec 17, 9:40 PM MST	Dense Fog Advisory	GJT	13 hr
Dec 18, 8:21 PM MST	Dense Fog Advisory	GJT	15 hr
Dec 21, 3:08 PM MST	Winter Weather Advisory	GJT	63 hr
Dec 23, 3:57 AM MST	Dense Fog Advisory	GJT	6 hr
Dec 23, 11:34 AM MST	Winter Storm Warning	GJT	18 hr
Dec 24, 3:21 PM MST	Winter Weather Advisory	GJT	39 hr
Dec 29, 3:13 PM MST	Winter Weather Advisory	GJT	37 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
Mesoscale Discussion	2
Flooding
Flash Flood Warning	3
Flash Flood Watch	3
Areal Flood Advisory	10
Winter
Blizzard Warning	1
Winter Storm Warning	18
Winter Storm Watch	17
Winter Weather Advisory	32
Cold
Freeze Warning	9
Freeze Watch	2
Wind and dust
High Wind Warning	3
High Wind Watch	1
Wind Advisory	10
Fire
Red Flag Warning	9
Fire Weather Watch	5
Fog and smoke
Dense Fog Advisory	6

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

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