Alert archive / California / Imperial County

Weather alerts in Imperial County, California, 2025

132 weather alerts in 2025, 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 2025. Tap one for its archive.

Alerts: 132
Warnings: 58
Watches: 11
Advisories: 49
Busiest month: September53 alerts
Busiest day: August 25, 202515 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, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	19	11	42%	22	82%	19 min
Flash flood warnings	23	14	39%	22	100%	72 min

Each office's whole area, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Phoenix, AZ: tornado warnings	0			1	0%
NWS Phoenix, AZ: severe thunderstorm warnings	124	35	72%	115	73%	19 min
NWS Phoenix, AZ: flash flood warnings	110	65	41%	141	89%	73 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 6, 12:38 AM PST	Wind Advisory	PSR	59 hr
Jan 8, 1:05 PM PST	Wind Advisory	PSR	30 hr
Jan 10, 11:59 PM PST	Wind Advisory	PSR	35 hr
Jan 19, 1:00 AM PST	Wind Advisory	PSR	45 hr
Jan 20, 1:43 AM PST	Freeze Watch	PSR	25 hr
Jan 21, 2:26 AM PST	Freeze Warning	PSR	30 hr
Feb 10, 1:06 PM PST	Wind Advisory	PSR	39 hr
Feb 12, 11:52 PM PST	Wind Advisory	PSR	51 hr
Feb 28, 12:45 PM PST	Wind Advisory	PSR	3 days
Mar 1, 3:24 PM PST	Dust Storm Advisory	PSR	2 hr
Mar 2, 1:41 PM PST	Blowing Dust Advisory	PSR	10 hr
Mar 5, 12:13 AM PST	Wind Advisory	PSR	46 hr
Mar 11, 8:09 PM PDT	Areal Flood Advisory	PSR	3 hr
Mar 12, 1:12 AM PDT	Wind Advisory	PSR	49 hr
Mar 14, 1:38 PM PDT	Wind Advisory	PSR	15 hr
Mar 16, 2:00 AM PDT	Wind Advisory	PSR	55 hr
Mar 27, 12:48 PM PDT	Wind Advisory	PSR	40 hr
Mar 29, 1:14 PM PDT	Wind Advisory	PSR	4 days
Mar 31, 12:16 AM PDT	Wind Advisory	PSR	50 hr
Mar 31, 12:46 PM PDT	Wind Advisory	PSR	37 hr
Apr 16, 2:00 AM PDT	Wind Advisory	PSR	66 hr
Apr 24, 12:42 PM PDT	Wind Advisory	PSR	60 hr
May 2, 12:54 PM PDT	Wind Advisory	PSR	61 hr
May 11, 1:02 AM PDT	Wind Advisory	PSR	3 days
May 16, 12:40 AM PDT	Wind Advisory	PSR	54 hr
May 17, 5:39 PM PDT	Dust Storm Advisory	PSR	2 hr
May 24, 12:38 PM PDT	Wind Advisory	PSR	10 hr
Jun 3, 8:20 PM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Jun 3, 11:41 PM PDT	Areal Flood Advisory	PSR	4 hr
Jun 10, 1:44 PM PDT	Extreme Heat Watch	PSR	47 hr
Jun 12, 12:50 PM PDT	Extreme Heat Warning	PSR	8 days
Jun 20, 12:57 PM PDT	Wind Advisory	PSR	39 hr
Jun 21, 5:52 PM PDT	Dust Storm Advisory	PSR	113 min
Jun 27, 12:05 AM PDT	Extreme Heat Warning	PSR	5 days
Jul 5, 12:49 AM PDT	Extreme Heat Watch	PSR	36 hr
Jul 6, 1:15 PM PDT	Extreme Heat Warning	PSR	4 days
Aug 1, 12:57 AM PDT	Extreme Heat Watch	PSR	36 hr
Aug 2, 12:37 PM PDT	Extreme Heat Warning	PSR	11 days
Aug 17, 11:54 AM PDT	Extreme Heat Watch	PSR	25 hr
Aug 18, 1:13 PM PDT	Extreme Heat Warning	PSR	6 days
Aug 23, 9:46 AM PDT	Areal Flood Advisory	PSR	112 min
Aug 24, 2:49 PM PDT	Severe Thunderstorm Warning	PSR	26 min
Aug 24, 3:14 PM PDT	Severe Thunderstorm Warning	PSR	31 min
Aug 24, 3:22 PM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Aug 24, 3:44 PM PDT	Severe Thunderstorm Warning	PSR	31 min
Aug 24, 4:08 PM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Aug 24, 4:50 PM PDT	Dust Storm Advisory	PSR	25 min
Aug 25, 2:00 AM PDT	Flood Watch	PSR	19 hr
Aug 25, 1:23 PM PDT	Severe Thunderstorm Warning	PSR	52 min
Aug 25, 2:08 PM PDT	Severe Thunderstorm Warning	PSR	52 min
Aug 25, 2:11 PM PDT	Severe Thunderstorm Warning	PSR	49 min
Aug 25, 2:37 PM PDT	Severe Thunderstorm Warning	PSR	38 min
Aug 25, 2:42 PM PDT	Severe Thunderstorm Warning	PSR	33 min
Aug 25, 2:55 PM PDT	Areal Flood Advisory	PSR	4 hr
Aug 25, 3:00 PM PDT	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 25, 3:10 PM PDT	Dust Storm Advisory	PSR	65 min
Aug 25, 3:12 PM PDT	Severe Thunderstorm Warning	PSR	48 min
Aug 25, 3:21 PM PDT	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 25, 3:25 PM PDT	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 25, 3:32 PM PDT	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 25, 3:57 PM PDT	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 25, 4:38 PM PDT	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 25, 6:37 PM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Aug 25, 6:54 PM PDT	Areal Flood Warning	PSR	12 hr
Aug 25, 7:11 PM PDT	Areal Flood Warning	PSR	12 hr
Aug 25, 7:26 PM PDT	Areal Flood Warning	PSR	12 hr
Aug 25, 7:52 PM PDT	Areal Flood Warning	PSR	12 hr
Sep 3, 1:30 PM PDT	Flood Watch	PSR	35 hr
Sep 4, 2:10 PM PDT	Severe Thunderstorm Warning	PSR	50 min
Sep 4, 3:04 PM PDT	Special Weather Statement	PSR	41 min
Sep 4, 3:25 PM PDT	Flash Flood Warning Considerable damage threat	PSR	4 hr
Sep 4, 3:41 PM PDT	Special Weather Statement	PSR	49 min
Sep 4, 4:37 PM PDT	Special Weather Statement	PSR	38 min
Sep 4, 7:30 PM PDT	Severe Thunderstorm Warning	PSR	45 min
Sep 4, 7:33 PM PDT	Dust Storm Advisory	PSR	57 min
Sep 4, 8:15 PM PDT	Severe Thunderstorm Warning	PSR	45 min
Sep 4, 10:57 PM PDT	Areal Flood Advisory	PSR	3 hr
Sep 8, 11:17 PM PDT	Wind Advisory	PSR	31 hr
Sep 9, 1:02 PM PDT	Wind Advisory	PSR	37 hr
Sep 17, 12:39 PM PDT	Flood Watch	PSR	34 hr
Sep 17, 2:06 PM PDT	Special Weather Statement	PSR	24 min
Sep 17, 3:22 PM PDT	Severe Thunderstorm Warning	PSR	38 min
Sep 17, 4:06 PM PDT	Areal Flood Advisory	PSR	3 hr
Sep 17, 4:51 PM PDT	Special Weather Statement	PSR	24 min
Sep 17, 5:14 PM PDT	Special Weather Statement	PSR	46 min
Sep 18, 1:39 AM PDT	Areal Flood Advisory	PSR	111 min
Sep 18, 11:48 AM PDT	Mesoscale Discussion	SPC	2 hr
Sep 18, 12:36 PM PDT	Flash Flood Warning Considerable damage threat	PSR	7 hr
Sep 18, 12:48 PM PDT	Severe Thunderstorm Warning	PSR	57 min
Sep 18, 1:20 PM PDT	Flash Flood Warning Considerable damage threat	PSR	6 hr
Sep 18, 4:55 PM PDT	Special Weather Statement	PSR	50 min
Sep 18, 4:56 PM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Sep 18, 5:27 PM PDT	Special Weather Statement	PSR	48 min
Sep 18, 5:39 PM PDT	Special Weather Statement	PSR	36 min
Sep 18, 5:47 PM PDT	Severe Thunderstorm Warning	PSR	28 min
Sep 18, 5:52 PM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Sep 18, 5:58 PM PDT	Special Weather Statement	PSR	32 min
Sep 18, 6:08 PM PDT	Severe Thunderstorm Warning	PSR	37 min
Sep 18, 6:12 PM PDT	Special Weather Statement	PSR	3 hr
Sep 18, 6:31 PM PDT	Flash Flood Warning Considerable damage threat	PSR	2 hr
Sep 18, 6:31 PM PDT	Severe Thunderstorm Warning	PSR	29 min
Sep 18, 6:46 PM PDT	Severe Thunderstorm Warning	PSR	29 min
Sep 18, 6:56 PM PDT	Severe Thunderstorm Warning	PSR	19 min
Sep 18, 7:08 PM PDT	Areal Flood Warning	PSR	107 min
Sep 18, 7:12 PM PDT	Areal Flood Warning	PSR	103 min
Sep 22, 2:16 AM PDT	Areal Flood Advisory	PSR	3 hr
Sep 22, 2:47 AM PDT	Flash Flood Warning Considerable damage threat	PSR	4 hr
Sep 22, 6:35 AM PDT	Areal Flood Warning	PSR	115 min
Sep 26, 4:02 PM PDT	Areal Flood Advisory	PSR	3 hr
Sep 27, 1:38 AM PDT	Flood Watch	PSR	16 hr
Sep 27, 5:22 AM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Sep 27, 8:59 AM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Sep 27, 9:57 AM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Sep 27, 11:08 AM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Sep 27, 11:47 AM PDT	Areal Flood Warning	PSR	118 min
Sep 27, 12:48 PM PDT	Areal Flood Warning	PSR	117 min
Sep 27, 1:09 PM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Sep 27, 2:02 PM PDT	Areal Flood Warning	PSR	118 min
Sep 27, 4:58 PM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Sep 27, 5:57 PM PDT	Areal Flood Advisory	PSR	3 hr
Oct 2, 12:16 PM PDT	Wind Advisory	PSR	41 hr
Oct 8, 1:37 PM PDT	Flood Watch	PSR	5 days
Oct 13, 8:46 AM PDT	Wind Advisory	PSR	26 hr
Oct 21, 1:57 PM PDT	Wind Advisory	PSR	41 hr
Nov 5, 5:44 AM PST	Dense Fog Advisory	PSR	2 hr
Nov 15, 10:31 AM PST	Areal Flood Advisory	PSR	4 hr
Nov 15, 3:37 PM PST	Special Weather Statement	PSR	38 min
Nov 15, 4:16 PM PST	Special Weather Statement	PSR	59 min
Nov 20, 12:12 PM PST	Flood Watch	PSR	28 hr
Nov 21, 8:48 AM PST	Areal Flood Advisory	PSR	3 hr
Nov 24, 3:34 AM PST	Dense Fog Advisory	PSR	5 hr
Dec 25, 6:39 AM PST	Dense Fog Advisory	PSR	81 min

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	19
Mesoscale Discussion	1
Special Weather Statement	13
Flooding
Areal Flood Warning	10
Flash Flood Warning	23
Flood Watch	6
Areal Flood Advisory	12
Heat
Extreme Heat Warning	5
Extreme Heat Watch	4
Cold
Freeze Warning	1
Freeze Watch	1
Wind and dust
Blowing Dust Advisory	1
Dust Storm Advisory	6
Wind Advisory	27
Fog and smoke
Dense Fog Advisory	3

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2024 2026

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.