Alert archive / California / Imperial County

Weather alerts in Imperial County, California, 2023

157 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Imperial County and its neighbors

Each county as a circle sized by its count in 2023. Tap one for its archive.

Alerts: 157
Warnings: 46
Watches: 13
Advisories: 85
Busiest month: August39 alerts
Busiest day: September 1, 202314 alerts

Over time

By month

Warning verification

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

Imperial County, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	7	1	86%	5	60%	17 min
Flash flood warnings	13	7	46%	16	88%	101 min

Each office's whole area, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Phoenix, AZ: severe thunderstorm warnings	87	23	74%	71	77%	21 min
NWS Phoenix, AZ: flash flood warnings	47	21	55%	50	88%	96 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, Pacific Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Lasted
Jan 1, 1:59 PM PST	Blowing Dust Advisory	PSR	5 hr
Jan 2, 9:57 AM PST	Wind Advisory	PSR	22 hr
Jan 5, 5:03 PM PST	Wind Advisory	PSR	6 hr
Jan 5, 11:20 PM PST	Wind Advisory	PSR	5 hr
Jan 9, 11:57 AM PST	Wind Advisory	PSR	34 hr
Jan 13, 11:58 AM PST	Wind Advisory	PSR	47 hr
Jan 15, 8:05 PM PST	Wind Advisory	PSR	41 hr
Jan 21, 12:47 PM PST	Wind Advisory	PSR	51 hr
Jan 23, 10:28 AM PST	Blowing Dust Advisory	PSR	5 hr
Jan 25, 12:40 AM PST	Wind Advisory	PSR	42 hr
Jan 28, 12:28 PM PST	Wind Advisory	PSR	26 hr
Jan 29, 3:26 AM PST	Dense Fog Advisory	PSR	5 hr
Jan 29, 2:37 PM PST	High Wind Warning	PSR	5 hr
Feb 4, 2:39 AM PST	Wind Advisory	PSR	45 hr
Feb 12, 1:36 AM PST	High Wind Watch	PSR	35 hr
Feb 13, 4:43 AM PST	Wind Advisory	PSR	43 hr
Feb 13, 12:44 PM PST	High Wind Warning	PSR	35 hr
Feb 14, 1:00 PM PST	Dust Storm Advisory	PSR	90 min
Feb 14, 2:18 PM PST	Wind Advisory	PSR	8 hr
Feb 14, 2:32 PM PST	Dust Storm Advisory	PSR	118 min
Feb 14, 2:55 PM PST	Dust Storm Advisory	PSR	2 hr
Feb 14, 4:29 PM PST	Dust Storm Advisory	PSR	103 min
Feb 14, 11:56 PM PST	Freeze Warning	PSR	32 hr
Feb 19, 12:10 PM PST	High Wind Watch	PSR	25 hr
Feb 20, 12:45 PM PST	High Wind Warning	PSR	54 hr
Feb 20, 12:45 PM PST	Wind Advisory	PSR	57 hr
Feb 21, 7:25 PM PST	Blowing Dust Advisory	PSR	12 hr
Feb 24, 1:21 PM PST	Wind Advisory	PSR	30 hr
Feb 24, 4:59 PM PST	Wind Advisory	PSR	46 hr
Feb 27, 12:30 PM PST	High Wind Watch	PSR	13 hr
Feb 28, 1:15 AM PST	High Wind Warning	PSR	42 hr
Feb 28, 1:15 AM PST	Wind Advisory	PSR	56 hr
Mar 15, 4:05 PM PDT	Special Weather Statement	PSR	40 min
Mar 15, 4:26 PM PDT	Severe Thunderstorm Warning	PSR	34 min
Mar 20, 2:15 AM PDT	High Wind Warning	PSR	54 hr
Mar 20, 2:15 AM PDT	Wind Advisory	PSR	21 hr
Mar 20, 2:15 AM PDT	Wind Advisory	PSR	56 hr
Mar 28, 12:28 PM PDT	Wind Advisory	PSR	44 hr
Apr 1, 12:52 PM PDT	High Wind Watch	PSR	13 hr
Apr 2, 1:44 AM PDT	High Wind Warning	PSR	45 hr
Apr 2, 1:44 AM PDT	Wind Advisory	PSR	51 hr
Apr 3, 12:52 AM PDT	Blowing Dust Advisory	PSR	22 hr
Apr 3, 4:28 PM PDT	Dust Storm Warning	PSR	2 hr
Apr 11, 1:23 PM PDT	Wind Advisory	PSR	46 hr
Apr 16, 1:28 PM PDT	Wind Advisory	PSR	40 hr
Apr 16, 1:28 PM PDT	Wind Advisory	PSR	64 hr
Apr 30, 2:22 AM PDT	Wind Advisory	PSR	51 hr
May 1, 2:45 PM PDT	Dust Storm Advisory	PSR	2 hr
May 1, 4:45 PM PDT	Dust Storm Advisory	PSR	2 hr
May 1, 6:43 PM PDT	Dust Storm Advisory	PSR	2 hr
May 2, 1:07 PM PDT	Wind Advisory	PSR	16 hr
May 2, 1:07 PM PDT	Wind Advisory	PSR	40 hr
May 8, 1:27 PM PDT	Wind Advisory	PSR	45 hr
May 9, 10:03 PM PDT	High Wind Warning	PSR	5 hr
May 19, 6:41 PM PDT	Dust Storm Advisory	PSR	64 min
May 19, 7:46 PM PDT	Dust Storm Advisory	PSR	59 min
May 19, 8:47 PM PDT	Dust Storm Advisory	PSR	88 min
May 25, 1:55 AM PDT	Wind Advisory	PSR	29 hr
May 26, 1:42 AM PDT	Wind Advisory	PSR	27 hr
May 29, 1:15 PM PDT	Wind Advisory	PSR	19 hr
May 30, 12:36 AM PDT	Wind Advisory	PSR	31 hr
May 31, 1:10 AM PDT	Wind Advisory	PSR	28 hr
Jun 4, 1:56 PM PDT	Wind Advisory	PSR	43 hr
Jun 6, 12:51 PM PDT	Wind Advisory	PSR	17 hr
Jun 10, 12:37 PM PDT	Wind Advisory	PSR	19 hr
Jun 10, 12:37 PM PDT	Wind Advisory	PSR	40 hr
Jun 17, 12:49 PM PDT	Wind Advisory	PSR	64 hr
Jun 18, 12:47 PM PDT	Wind Advisory	PSR	34 hr
Jun 22, 1:04 AM PDT	Wind Advisory	PSR	24 hr
Jun 25, 12:54 PM PDT	Wind Advisory	PSR	40 hr
Jun 28, 12:57 PM PDT	Excessive Heat Watch	PSR	23 hr
Jun 29, 11:49 AM PDT	Excessive Heat Warning	PSR	30 days
Jul 7, 11:52 AM PDT	Excessive Heat Watch	PSR	24 hr
Jul 12, 1:46 PM PDT	Wind Advisory	PSR	14 hr
Jul 23, 12:48 AM PDT	Dust Storm Advisory	PSR	87 min
Jul 23, 2:15 AM PDT	Dust Storm Advisory	PSR	90 min
Jul 24, 1:44 AM PDT	Excessive Heat Warning	PSR	6 days
Jul 31, 1:00 AM PDT	Special Weather Statement	PSR	2 hr
Jul 31, 3:30 AM PDT	Areal Flood Advisory	PSR	3 hr
Aug 1, 6:40 PM PDT	Special Weather Statement	PSR	35 min
Aug 1, 7:01 PM PDT	Special Weather Statement	PSR	44 min
Aug 1, 7:31 PM PDT	Special Weather Statement	PSR	44 min
Aug 2, 12:40 AM PDT	Excessive Heat Warning	PSR	6 days
Aug 8, 12:29 PM PDT	Wind Advisory	PSR	20 hr
Aug 13, 12:29 PM PDT	Excessive Heat Watch	PSR	24 hr
Aug 13, 5:45 PM PDT	Special Weather Statement	PSR	45 min
Aug 13, 6:16 PM PDT	Areal Flood Advisory	PSR	19 min
Aug 13, 6:30 PM PDT	Special Weather Statement	PSR	45 min
Aug 13, 6:35 PM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Aug 14, 12:24 PM PDT	Excessive Heat Warning	PSR	3 days
Aug 17, 1:17 PM PDT	Flood Watch	PSR	4 days
Aug 18, 1:18 PM PDT	Wind Advisory	PSR	60 hr
Aug 18, 5:02 PM PDT	Special Weather Statement	PSR	43 min
Aug 18, 5:32 PM PDT	Severe Thunderstorm Warning	PSR	28 min
Aug 18, 6:04 PM PDT	Special Weather Statement	PSR	41 min
Aug 19, 4:49 AM PDT	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 19, 8:17 AM PDT	Areal Flood Advisory	PSR	29 min
Aug 19, 8:46 AM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Aug 19, 8:51 AM PDT	Areal Flood Warning	PSR	4 hr
Aug 19, 1:50 PM PDT	High Wind Warning	PSR	29 hr
Aug 20, 11:09 AM PDT	Mesoscale Discussion	SPC	2 hr
Aug 20, 11:31 AM PDT	Severe Thunderstorm Warning	PSR	44 min
Aug 20, 11:55 AM PDT	Flash Flood Warning Considerable damage threat	PSR	6 hr
Aug 20, 12:40 PM PDT	Blowing Dust Advisory	PSR	2 hr
Aug 20, 1:00 PM PDT	Severe Thunderstorm Warning	PSR	45 min
Aug 20, 1:24 PM PDT	Blowing Dust Warning	PSR	6 hr
Aug 20, 1:24 PM PDT	Areal Flood Advisory	PSR	8 min
Aug 20, 1:32 PM PDT	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 20, 2:02 PM PDT	Areal Flood Advisory	PSR	4 hr
Aug 20, 2:30 PM PDT	Flash Flood Warning Considerable damage threat	PSR	5 hr
Aug 20, 3:06 PM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Aug 20, 4:12 PM PDT	Blowing Dust Advisory	PSR	3 hr
Aug 20, 5:12 PM PDT	Areal Flood Warning	PSR	16 hr
Aug 20, 5:34 PM PDT	Areal Flood Warning	PSR	15 hr
Aug 20, 7:43 PM PDT	Areal Flood Warning	PSR	13 hr
Aug 24, 12:20 PM PDT	Excessive Heat Watch	PSR	23 hr
Aug 25, 11:43 AM PDT	Excessive Heat Warning	PSR	5 days
Aug 31, 1:15 PM PDT	Flood Watch	PSR	35 hr
Sep 1, 12:19 PM PDT	Dust Storm Advisory	PSR	56 min
Sep 1, 12:23 PM PDT	Severe Thunderstorm Warning	PSR	52 min
Sep 1, 12:31 PM PDT	Mesoscale Discussion	SPC	2 hr
Sep 1, 12:58 PM PDT	Special Weather Statement	PSR	3 hr
Sep 1, 1:04 PM PDT	Dust Storm Warning	PSR	86 min
Sep 1, 1:06 PM PDT	Severe Thunderstorm Warning	PSR	39 min
Sep 1, 1:18 PM PDT	Flash Flood Warning Considerable damage threat	PSR	4 hr
Sep 1, 1:24 PM PDT	Flash Flood Warning Considerable damage threat	PSR	6 hr
Sep 1, 1:47 PM PDT	Dust Storm Advisory	PSR	88 min
Sep 1, 1:50 PM PDT	Severe Thunderstorm Warning	PSR	55 min
Sep 1, 2:03 PM PDT	Flash Flood Warning Considerable damage threat	PSR	4 hr
Sep 1, 2:31 PM PDT	Dust Storm Advisory	PSR	119 min
Sep 1, 2:57 PM PDT	Flash Flood Warning Considerable damage threat	PSR	6 hr
Sep 1, 3:57 PM PDT	Special Weather Statement	PSR	93 min
Sep 1, 5:52 PM PDT	Areal Flood Warning	PSR	5 hr
Sep 1, 7:32 PM PDT	Areal Flood Warning	PSR	3 hr
Sep 1, 9:15 PM PDT	Areal Flood Warning	PSR	2 hr
Sep 2, 2:54 AM PDT	Areal Flood Advisory	PSR	111 min
Sep 2, 12:43 PM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Sep 3, 1:04 AM PDT	Wind Advisory	PSR	28 hr
Sep 6, 1:01 AM PDT	Excessive Heat Watch	PSR	24 hr
Sep 7, 1:19 AM PDT	Excessive Heat Warning	PSR	4 days
Sep 21, 2:49 AM PDT	Wind Advisory	PSR	5 hr
Sep 28, 12:48 PM PDT	Wind Advisory	PSR	64 hr
Sep 30, 11:48 AM PDT	Blowing Dust Advisory	PSR	10 hr
Oct 9, 1:21 PM PDT	Wind Advisory	PSR	43 hr
Oct 21, 1:19 PM PDT	Wind Advisory	PSR	46 hr
Oct 27, 12:51 PM PDT	Wind Advisory	PSR	58 hr
Oct 28, 1:22 AM PDT	Fire Weather Watch	PSR	11 hr
Oct 28, 12:41 PM PDT	Red Flag Warning	PSR	28 hr
Oct 29, 10:35 AM PDT	Blowing Dust Advisory	PSR	9 hr
Nov 7, 11:46 AM PST	Wind Advisory	PSR	34 hr
Nov 17, 12:50 AM PST	Dense Fog Advisory	PSR	8 hr
Nov 19, 1:07 AM PST	Wind Advisory	PSR	41 hr
Dec 7, 1:12 PM PST	Wind Advisory	PSR	47 hr
Dec 20, 11:14 PM PST	Flood Watch	PSR	49 hr
Dec 22, 5:24 PM PST	Flash Flood Warning Considerable damage threat	PSR	4 hr
Dec 23, 6:18 AM PST	Dense Fog Advisory	PSR	4 hr
Dec 24, 3:17 AM PST	Dense Fog Advisory	PSR	7 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	2
Special Weather Statement	11
Flooding
Areal Flood Warning	7
Flash Flood Warning	13
Flood Watch	3
Areal Flood Advisory	6
Heat
Excessive Heat Warning	6
Excessive Heat Watch	5
Cold
Freeze Warning	1
Wind and dust
Blowing Dust Warning	1
Dust Storm Warning	2
High Wind Warning	8
High Wind Watch	4
Blowing Dust Advisory	8
Dust Storm Advisory	15
Wind Advisory	52
Fire
Red Flag Warning	1
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	4

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2022 2024

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.