Alert archive / Colorado / Montezuma County

Weather alerts in Montezuma County, Colorado, 2018

129 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Montezuma County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts: 129
Warnings: 37
Watches: 37
Advisories: 41
Busiest month: June28 alerts
Busiest day: April 17, 20183 alerts

Over time

By month

Warning verification

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

Montezuma County, 2018

	Warnings	With a report	False alarm ratio
Tornado warnings	0
Severe thunderstorm warnings	2	0	100%
Flash flood warnings	2	1	50%

Each office's whole area, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Grand Junction, CO: tornado warnings	0			1	0%
NWS Grand Junction, CO: severe thunderstorm warnings	29	8	72%	41	22%	21 min
NWS Grand Junction, CO: flash flood warnings	32	11	66%	31	45%	95 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 5, 2:55 PM MST	Winter Weather Advisory	GJT	42 hr
Jan 8, 2:52 PM MST	Winter Storm Watch	GJT	6 hr
Jan 8, 9:00 PM MST	Winter Storm Warning	GJT	48 hr
Jan 19, 8:41 AM MST	Winter Storm Watch	GJT	6 hr
Jan 19, 2:54 PM MST	Winter Weather Advisory	GJT	54 hr
Feb 9, 2:10 PM MST	Winter Weather Advisory	GJT	33 hr
Feb 11, 5:12 AM MST	Winter Weather Advisory	GJT	54 hr
Feb 11, 3:05 PM MST	Winter Storm Warning	GJT	42 hr
Feb 14, 3:39 AM MST	Winter Weather Advisory	GJT	44 hr
Feb 17, 4:07 AM MST	Winter Storm Watch	GJT	24 hr
Feb 17, 2:12 PM MST	Winter Storm Warning	GJT	66 hr
Feb 18, 1:25 PM MST	Wind Advisory	GJT	30 hr
Feb 20, 2:20 PM MST	Winter Weather Advisory	GJT	45 hr
Feb 22, 3:10 PM MST	Winter Weather Advisory	GJT	45 hr
Mar 15, 3:52 AM MDT	Winter Weather Advisory	GJT	24 hr
Mar 16, 9:11 PM MDT	Winter Weather Advisory	GJT	63 hr
Mar 22, 4:30 AM MDT	Winter Weather Advisory	GJT	38 hr
Apr 1, 2:47 PM MDT	Red Flag Warning	GJT	30 hr
Apr 10, 2:00 PM MDT	Red Flag Warning	GJT	30 hr
Apr 11, 2:34 PM MDT	Red Flag Warning	GJT	29 hr
Apr 11, 5:05 PM MDT	Wind Advisory	GJT	27 hr
Apr 12, 2:09 PM MDT	Freeze Watch	GJT	22 hr
Apr 13, 4:03 AM MDT	Freeze Warning	GJT	28 hr
Apr 14, 1:35 PM MDT	Fire Weather Watch	GJT	14 hr
Apr 15, 4:01 AM MDT	Red Flag Warning	GJT	44 hr
Apr 15, 1:50 PM MDT	Wind Advisory	GJT	54 hr
Apr 17, 2:33 AM MDT	Red Flag Warning	GJT	7 hr
Apr 17, 2:42 AM MDT	Freeze Warning	GJT	30 hr
Apr 17, 2:35 PM MDT	Fire Weather Watch	GJT	13 hr
Apr 18, 3:11 AM MDT	Red Flag Warning	GJT	42 hr
Apr 19, 9:24 AM MDT	Winter Storm Warning	GJT	33 hr
Apr 28, 2:43 AM MDT	Fire Weather Watch	GJT	12 hr
Apr 28, 2:38 PM MDT	Red Flag Warning	GJT	30 hr
May 1, 3:34 AM MDT	Winter Weather Advisory	GJT	56 hr
May 8, 1:56 PM MDT	Fire Weather Watch	GJT	13 hr
May 9, 3:08 AM MDT	Red Flag Warning	GJT	42 hr
May 10, 3:52 AM MDT	Red Flag Warning	GJT	42 hr
May 10, 3:15 PM MDT	Red Flag Warning	GJT	55 hr
May 11, 8:47 PM MDT	Wind Advisory	GJT	23 hr
May 15, 1:37 PM MDT	Fire Weather Watch	GJT	19 hr
May 16, 8:39 AM MDT	Red Flag Warning	GJT	36 hr
May 23, 2:48 PM MDT	Fire Weather Watch	GJT	35 hr
May 25, 1:52 AM MDT	Red Flag Warning	GJT	44 hr
May 29, 2:57 PM MDT	Fire Weather Watch	GJT	24 hr
May 30, 4:30 AM MDT	Red Flag Warning	GJT	42 hr
May 31, 4:31 AM MDT	Red Flag Warning	GJT	41 hr
Jun 3, 3:15 PM MDT	Special Weather Statement	GJT	45 min
Jun 7, 12:38 PM MDT	Dense Smoke Advisory	GJT	21 hr
Jun 7, 2:40 PM MDT	Fire Weather Watch	GJT	20 hr
Jun 8, 4:20 AM MDT	Red Flag Warning	GJT	41 hr
Jun 8, 10:50 AM MDT	Red Flag Warning	GJT	59 hr
Jun 8, 11:02 AM MDT	Dense Smoke Advisory	GJT	23 hr
Jun 9, 2:43 PM MDT	Dense Smoke Advisory	GJT	21 hr
Jun 10, 1:49 PM MDT	Dense Smoke Advisory	GJT	22 hr
Jun 11, 2:32 PM MDT	Dense Smoke Advisory	GJT	21 hr
Jun 12, 2:25 PM MDT	Dense Smoke Advisory	GJT	22 hr
Jun 12, 3:00 PM MDT	Fire Weather Watch	GJT	12 hr
Jun 13, 3:02 AM MDT	Red Flag Warning	GJT	42 hr
Jun 14, 3:48 AM MDT	Red Flag Warning	GJT	41 hr
Jun 14, 9:24 AM MDT	Flash Flood Watch	GJT	72 hr
Jun 17, 1:56 AM MDT	Special Weather Statement	GJT	49 min
Jun 17, 3:03 AM MDT	Special Weather Statement	GJT	42 min
Jun 20, 3:08 PM MDT	Fire Weather Watch	GJT	23 hr
Jun 21, 2:25 PM MDT	Red Flag Warning	GJT	31 hr
Jun 22, 4:13 AM MDT	Fire Weather Watch	GJT	11 hr
Jun 22, 3:14 PM MDT	Fire Weather Watch	GJT	23 hr
Jun 22, 3:14 PM MDT	Red Flag Warning	GJT	30 hr
Jun 23, 2:04 PM MDT	Red Flag Warning	GJT	30 hr
Jun 26, 2:41 PM MDT	Fire Weather Watch	GJT	14 hr
Jun 27, 4:43 AM MDT	Red Flag Warning	GJT	41 hr
Jun 27, 2:34 PM MDT	Fire Weather Watch	GJT	13 hr
Jun 28, 3:54 AM MDT	Red Flag Warning	GJT	41 hr
Jun 29, 2:19 PM MDT	Dense Smoke Advisory	GJT	20 hr
Jun 30, 2:03 PM MDT	Dense Smoke Advisory	GJT	20 hr
Jul 1, 2:11 PM MDT	Dense Smoke Advisory	GJT	20 hr
Jul 2, 2:24 PM MDT	Dense Smoke Advisory	GJT	20 hr
Jul 3, 2:58 PM MDT	Dense Smoke Advisory	GJT	19 hr
Jul 4, 1:31 PM MDT	Dense Smoke Advisory	GJT	20 hr
Jul 5, 3:30 PM MDT	Flash Flood Watch	GJT	30 hr
Jul 6, 3:30 PM MDT	Flash Flood Watch	GJT	30 hr
Jul 7, 2:33 PM MDT	Flash Flood Watch	GJT	30 hr
Jul 8, 2:48 PM MDT	Severe Thunderstorm Warning	GJT	27 min
Jul 8, 3:17 PM MDT	Severe Thunderstorm Warning	GJT	28 min
Jul 9, 1:26 PM MDT	Flash Flood Watch	GJT	56 hr
Jul 9, 1:26 PM MDT	Flash Flood Watch	GJT	3 days
Jul 11, 4:13 PM MDT	Special Weather Statement	GJT	32 min
Jul 12, 4:31 AM MDT	Flash Flood Watch	GJT	40 hr
Jul 13, 2:09 PM MDT	Special Weather Statement	GJT	36 min
Jul 13, 2:38 PM MDT	Flash Flood Watch	GJT	33 hr
Jul 13, 3:11 PM MDT	Areal Flood Advisory	GJT	2 hr
Jul 14, 3:13 PM MDT	Flash Flood Watch	GJT	30 hr
Jul 15, 3:03 PM MDT	Flash Flood Watch	GJT	30 hr
Jul 16, 2:44 PM MDT	Flash Flood Watch	GJT	30 hr
Jul 16, 4:01 PM MDT	Special Weather Statement	GJT	44 min
Jul 16, 5:16 PM MDT	Areal Flood Advisory	GJT	93 min
Jul 17, 7:32 PM MDT	Special Weather Statement	GJT	43 min
Jul 24, 2:28 PM MDT	Flash Flood Watch	GJT	32 hr
Jul 24, 2:51 PM MDT	Areal Flood Advisory	GJT	3 hr
Jul 25, 12:53 PM MDT	Flash Flood Warning	GJT	5 hr
Jul 26, 2:28 PM MDT	Flash Flood Watch	GJT	30 hr
Aug 10, 5:44 PM MDT	Special Weather Statement	GJT	46 min
Aug 12, 3:38 PM MDT	Flash Flood Warning	GJT	117 min
Aug 12, 4:36 PM MDT	Special Weather Statement	GJT	39 min
Aug 12, 6:58 PM MDT	Special Weather Statement	GJT	47 min
Aug 21, 4:02 AM MDT	Flash Flood Watch	GJT	44 hr
Aug 21, 1:52 PM MDT	Special Weather Statement	ABQ	38 min
Aug 26, 7:20 PM MDT	Special Weather Statement	GJT	40 min
Sep 1, 1:07 PM MDT	Special Weather Statement	GJT	38 min
Sep 1, 1:52 PM MDT	Special Weather Statement	GJT	23 min
Sep 30, 2:58 PM MDT	Flash Flood Watch	GJT	54 hr
Oct 4, 11:33 AM MDT	Flash Flood Watch	GJT	6 hr
Oct 7, 6:24 PM MDT	Winter Weather Advisory	GJT	21 hr
Oct 12, 1:29 PM MDT	Freeze Watch	GJT	47 hr
Oct 14, 12:46 PM MDT	Freeze Warning	GJT	22 hr
Nov 20, 12:49 PM MST	Winter Weather Advisory	GJT	71 hr
Nov 23, 4:11 AM MST	Winter Weather Advisory	GJT	43 hr
Nov 28, 3:03 PM MST	Winter Weather Advisory	GJT	69 hr
Dec 1, 2:32 PM MST	Winter Weather Advisory	GJT	27 hr
Dec 6, 3:42 AM MST	Winter Weather Advisory	GJT	23 hr
Dec 7, 6:09 PM MST	Dense Fog Advisory	GJT	16 hr
Dec 12, 9:43 AM MST	Wind Advisory	GJT	12 hr
Dec 23, 1:45 PM MST	Winter Storm Watch	GJT	24 hr
Dec 24, 2:11 PM MST	Winter Storm Warning	GJT	39 hr
Dec 24, 8:58 PM MST	Winter Weather Advisory	GJT	45 hr
Dec 27, 2:51 AM MST	Winter Storm Watch	GJT	12 hr
Dec 27, 2:51 AM MST	Winter Weather Advisory	GJT	45 hr
Dec 27, 3:14 PM MST	Winter Storm Warning	GJT	33 hr
Dec 30, 3:40 AM MST	Winter Weather Advisory	GJT	61 hr
Dec 30, 3:24 PM MST	Winter Storm Warning	GJT	50 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
Special Weather Statement	14
Flooding
Flash Flood Warning	2
Flash Flood Watch	16
Areal Flood Advisory	3
Winter
Winter Storm Warning	7
Winter Storm Watch	5
Winter Weather Advisory	20
Cold
Freeze Warning	3
Freeze Watch	2
Wind and dust
Wind Advisory	5
Fire
Red Flag Warning	23
Fire Weather Watch	14
Fog and smoke
Dense Fog Advisory	1
Dense Smoke Advisory	12

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2017 2019

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.