Weather alerts in Delta County, Colorado, 2022

123 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Delta County and its neighbors

Each county as a circle sized by its count in 2022. Tap one for its archive.

Alerts: 123
Warnings: 40
Watches: 31
Advisories: 42
Busiest month: April31 alerts
Busiest day: April 25, 20224 alerts

Over time

By month

Warning verification

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

Delta County, 2022

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

Each office's whole area, 2022

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Grand Junction, CO: severe thunderstorm warnings	29	5	83%	13	38%	17 min
NWS Grand Junction, CO: flash flood warnings	61	12	80%	38	63%	45 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 3, 2:19 PM MST	Winter Storm Warning	GJT	3 days
Jan 4, 2:13 AM MST	Winter Weather Advisory	GJT	64 hr
Jan 7, 2:55 AM MST	Winter Weather Advisory	GJT	38 hr
Jan 21, 10:48 PM MST	Dense Fog Advisory	GJT	12 hr
Feb 16, 1:20 PM MST	Snow Squall Warning	GJT	25 min
Feb 20, 4:03 AM MST	Winter Storm Watch	GJT	11 hr
Feb 20, 3:31 PM MST	Winter Storm Warning	GJT	4 days
Feb 20, 3:31 PM MST	Winter Weather Advisory	GJT	4 days
Feb 21, 9:53 AM MST	Winter Storm Watch	GJT	17 hr
Mar 3, 2:13 PM MST	Winter Weather Advisory	GJT	4 days
Mar 8, 3:26 AM MST	Winter Weather Advisory	GJT	65 hr
Mar 27, 2:43 PM MDT	Winter Weather Advisory	GJT	69 hr
Apr 4, 3:11 AM MDT	Wind Advisory	GJT	42 hr
Apr 4, 3:19 AM MDT	Winter Weather Advisory	GJT	45 hr
Apr 10, 2:31 PM MDT	Wind Advisory	GJT	39 hr
Apr 10, 2:31 PM MDT	Winter Storm Watch	GJT	12 hr
Apr 11, 2:40 AM MDT	Winter Storm Warning	GJT	56 hr
Apr 11, 6:46 PM MDT	High Wind Warning	GJT	11 hr
Apr 15, 2:47 PM MDT	Wind Advisory	GJT	30 hr
Apr 17, 3:03 PM MDT	Fire Weather Watch	GJT	12 hr
Apr 17, 3:03 PM MDT	Red Flag Warning	GJT	29 hr
Apr 18, 3:22 AM MDT	Red Flag Warning	GJT	43 hr
Apr 18, 3:30 AM MDT	Wind Advisory	GJT	42 hr
Apr 19, 2:48 PM MDT	Fire Weather Watch	GJT	12 hr
Apr 19, 2:48 PM MDT	Fire Weather Watch	GJT	24 hr
Apr 20, 2:29 PM MDT	Red Flag Warning	GJT	31 hr
Apr 21, 1:44 AM MDT	Wind Advisory	GJT	40 hr
Apr 22, 12:42 PM MDT	High Wind Warning	GJT	5 hr
Apr 22, 12:52 PM MDT	Red Flag Warning	GJT	3 hr
Apr 23, 1:58 PM MDT	Freeze Warning	GJT	20 hr
Apr 24, 7:32 AM MDT	Winter Weather Advisory	GJT	22 hr
Apr 24, 1:41 PM MDT	Freeze Warning	GJT	19 hr
Apr 25, 4:11 AM MDT	Fire Weather Watch	GJT	10 hr
Apr 25, 1:50 PM MDT	Fire Weather Watch	GJT	12 hr
Apr 25, 1:50 PM MDT	Fire Weather Watch	GJT	37 hr
Apr 25, 1:50 PM MDT	Red Flag Warning	GJT	30 hr
Apr 26, 2:03 AM MDT	Red Flag Warning	GJT	42 hr
Apr 27, 2:53 AM MDT	Fire Weather Watch	GJT	25 hr
Apr 27, 2:53 AM MDT	Red Flag Warning	GJT	42 hr
Apr 28, 3:26 AM MDT	Red Flag Warning	GJT	42 hr
Apr 29, 1:23 AM MDT	Wind Advisory	GJT	20 hr
Apr 29, 2:32 PM MDT	Fire Weather Watch	GJT	12 hr
Apr 30, 2:22 AM MDT	Red Flag Warning	GJT	43 hr
May 4, 2:40 PM MDT	Fire Weather Watch	GJT	23 hr
May 5, 2:08 PM MDT	Fire Weather Watch	GJT	24 hr
May 5, 2:08 PM MDT	Red Flag Warning	GJT	55 hr
May 6, 2:21 PM MDT	Wind Advisory	GJT	31 hr
May 6, 2:23 PM MDT	Red Flag Warning	GJT	56 hr
May 7, 3:10 AM MDT	Wind Advisory	GJT	54 hr
May 7, 3:20 AM MDT	Fire Weather Watch	GJT	24 hr
May 8, 3:44 AM MDT	Red Flag Warning	GJT	42 hr
May 8, 3:24 PM MDT	Fire Weather Watch	GJT	11 hr
May 9, 2:32 AM MDT	Red Flag Warning	GJT	43 hr
May 9, 2:04 PM MDT	Wind Advisory	GJT	30 hr
May 9, 2:06 PM MDT	Fire Weather Watch	GJT	13 hr
May 10, 2:50 AM MDT	Wind Advisory	GJT	42 hr
May 10, 2:57 AM MDT	Red Flag Warning	GJT	44 hr
May 11, 3:03 AM MDT	High Wind Warning	GJT	18 hr
May 17, 1:42 PM MDT	Fire Weather Watch	GJT	12 hr
May 18, 2:04 AM MDT	Red Flag Warning	GJT	46 hr
May 18, 2:46 PM MDT	Winter Weather Advisory	GJT	63 hr
May 18, 6:28 PM MDT	Wind Advisory	GJT	28 hr
May 25, 1:21 PM MDT	Fire Weather Watch	GJT	15 hr
May 25, 1:21 PM MDT	Fire Weather Watch	GJT	24 hr
May 26, 4:30 AM MDT	Red Flag Warning	GJT	41 hr
May 26, 1:06 PM MDT	Red Flag Warning	GJT	56 hr
May 27, 1:45 PM MDT	Wind Advisory	GJT	30 hr
May 29, 11:52 AM MDT	Mesoscale Discussion	SPC	2 hr
May 30, 2:59 AM MDT	Fire Weather Watch	GJT	11 hr
Jun 9, 2:52 PM MDT	Fire Weather Watch	GJT	23 hr
Jun 10, 1:54 PM MDT	Fire Weather Watch	GJT	23 hr
Jun 10, 1:54 PM MDT	Red Flag Warning	GJT	58 hr
Jun 11, 1:22 PM MDT	Red Flag Warning	GJT	58 hr
Jun 12, 3:40 AM MDT	High Wind Watch	GJT	11 hr
Jun 12, 2:45 PM MDT	High Wind Warning	GJT	32 hr
Jun 12, 2:45 PM MDT	Wind Advisory	GJT	32 hr
Jun 13, 3:44 AM MDT	Red Flag Warning	GJT	41 hr
Jun 15, 2:06 PM MDT	Fire Weather Watch	GJT	25 hr
Jun 16, 3:09 PM MDT	Red Flag Warning	GJT	30 hr
Jun 19, 11:02 AM MDT	Mesoscale Discussion	SPC	118 min
Jun 23, 2:59 PM MDT	Special Weather Statement	GJT	31 min
Jul 3, 1:47 PM MDT	Special Weather Statement	GJT	28 min
Jul 15, 6:48 PM MDT	Areal Flood Advisory	GJT	2 hr
Jul 15, 7:23 PM MDT	Special Weather Statement	GJT	37 min
Jul 18, 6:06 PM MDT	Special Weather Statement	GJT	24 min
Jul 27, 3:23 PM MDT	Flood Watch	GJT	31 hr
Jul 28, 2:10 PM MDT	Flood Watch	GJT	32 hr
Aug 3, 1:02 PM MDT	Special Weather Statement	GJT	28 min
Aug 11, 4:19 PM MDT	Areal Flood Advisory	GJT	3 hr
Aug 15, 12:29 PM MDT	Special Weather Statement	GJT	31 min
Aug 19, 3:59 PM MDT	Areal Flood Advisory	GJT	20 min
Aug 19, 4:19 PM MDT	Flash Flood Warning	GJT	3 hr
Sep 14, 4:13 PM MDT	Special Weather Statement	GJT	32 min
Sep 19, 1:49 PM MDT	Flood Watch	GJT	3 days
Sep 30, 12:02 PM MDT	Mesoscale Discussion	SPC	118 min
Oct 21, 3:06 PM MDT	Wind Advisory	GJT	45 hr
Oct 21, 3:10 PM MDT	Winter Storm Watch	GJT	11 hr
Oct 22, 2:26 AM MDT	Winter Storm Warning	GJT	49 hr
Oct 22, 4:22 AM MDT	Winter Weather Advisory	GJT	47 hr
Oct 23, 12:02 AM MDT	Wind Advisory	GJT	9 hr
Oct 23, 8:57 AM MDT	Freeze Warning	GJT	49 hr
Oct 25, 2:10 PM MDT	Winter Weather Advisory	GJT	49 hr
Nov 1, 2:08 PM MDT	Winter Weather Advisory	GJT	64 hr
Nov 8, 2:54 AM MST	Winter Weather Advisory	GJT	57 hr
Nov 8, 1:45 PM MST	Wind Advisory	GJT	27 hr
Nov 27, 1:27 PM MST	Winter Storm Warning	GJT	52 hr
Nov 27, 1:27 PM MST	Winter Weather Advisory	GJT	46 hr
Nov 30, 3:05 PM MST	Winter Storm Watch	GJT	12 hr
Dec 1, 2:58 AM MST	Winter Storm Warning	GJT	38 hr
Dec 1, 2:58 AM MST	Winter Weather Advisory	GJT	38 hr
Dec 1, 3:01 AM MST	Wind Advisory	GJT	35 hr
Dec 4, 2:24 PM MST	Winter Weather Advisory	GJT	4 days
Dec 5, 2:33 PM MST	Winter Weather Advisory	GJT	63 hr
Dec 7, 8:14 AM MST	Dense Fog Advisory	GJT	4 hr
Dec 11, 2:55 AM MST	Winter Weather Advisory	GJT	4 days
Dec 20, 2:41 PM MST	Wind Chill Warning	GJT	61 hr
Dec 20, 2:41 PM MST	Winter Storm Warning	GJT	45 hr
Dec 20, 2:41 PM MST	Winter Weather Advisory	GJT	45 hr
Dec 26, 3:06 AM MST	Winter Storm Watch	GJT	11 hr
Dec 26, 1:56 PM MST	Winter Storm Warning	GJT	63 hr
Dec 26, 1:56 PM MST	Winter Weather Advisory	GJT	63 hr
Dec 29, 1:58 PM MST	Winter Storm Watch	GJT	13 hr
Dec 29, 1:58 PM MST	Winter Storm Warning	GJT	4 days

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Severe storms
Mesoscale Discussion	3
Special Weather Statement	7
Flooding
Flash Flood Warning	1
Flood Watch	3
Areal Flood Advisory	3
Winter
Snow Squall Warning	1
Winter Storm Warning	9
Winter Storm Watch	7
Winter Weather Advisory	20
Cold
Freeze Warning	3
Wind Chill Warning	1
Wind and dust
High Wind Warning	4
High Wind Watch	1
Wind Advisory	17
Fire
Red Flag Warning	21
Fire Weather Watch	20
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 2021 2023

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.