Alert archive / California / Riverside County

Weather alerts in Riverside County, California, 2025

208 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Riverside County and its neighbors

Each county as a circle sized by its count in 2025. Tap one for its archive.

Alerts: 208
Warnings: 53
Watches: 35
Advisories: 106
Busiest month: September50 alerts
Busiest day: August 25, 202512 alerts

Over time

By month

Warning verification

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

Riverside County, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	14	2	86%	6	33%	2 min
Flash flood warnings	17	4	76%	10	20%	129 min

Each office's whole area, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS San Diego, CA: severe thunderstorm warnings	8	3	63%	13	23%	3 min
NWS San Diego, CA: flash flood warnings	36	8	78%	45	47%	208 min
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 4, 12:38 PM PST	High Wind Watch	SGX	49 hr
Jan 5, 12:52 PM PST	Fire Weather Watch	SGX	24 hr
Jan 6, 12:38 AM PST	Wind Advisory	PSR	59 hr
Jan 6, 12:57 PM PST	Red Flag Warning	SGX	4 days
Jan 6, 1:39 PM PST	High Wind Warning	SGX	4 days
Jan 8, 1:05 PM PST	Wind Advisory	PSR	30 hr
Jan 10, 12:24 PM PST	Fire Weather Watch	SGX	15 hr
Jan 10, 11:59 PM PST	Wind Advisory	PSR	35 hr
Jan 11, 3:40 AM PST	Red Flag Warning	SGX	5 days
Jan 11, 1:06 PM PST	Fire Weather Watch	SGX	24 hr
Jan 13, 2:11 AM PST	Frost Advisory	SGX	7 hr
Jan 13, 2:11 AM PST	Frost Advisory	SGX	31 hr
Jan 13, 2:11 AM PST	Wind Advisory	SGX	64 hr
Jan 17, 12:59 PM PST	Fire Weather Watch	SGX	24 hr
Jan 18, 12:54 PM PST	Red Flag Warning	SGX	6 days
Jan 18, 8:57 PM PST	High Wind Watch	SGX	16 hr
Jan 19, 1:00 AM PST	Wind Advisory	PSR	45 hr
Jan 19, 11:57 AM PST	High Wind Warning	SGX	52 hr
Jan 20, 1:43 AM PST	Freeze Watch	PSR	25 hr
Jan 20, 1:35 PM PST	Fire Weather Watch	SGX	23 hr
Jan 21, 2:26 AM PST	Freeze Warning	PSR	30 hr
Jan 22, 2:41 AM PST	High Wind Watch	SGX	9 hr
Jan 22, 12:04 PM PST	High Wind Warning	SGX	30 hr
Jan 23, 12:56 PM PST	Winter Storm Watch	SGX	24 hr
Jan 24, 12:59 PM PST	Winter Storm Warning	SGX	3 days
Feb 10, 1:49 PM PST	Flood Watch	SGX	4 days
Feb 12, 12:58 PM PST	Wind Advisory	SGX	63 hr
Feb 13, 5:17 PM PST	Areal Flood Advisory	SGX	3 hr
Feb 13, 8:11 PM PST	Areal Flood Advisory	SGX	4 hr
Feb 13, 9:15 PM PST	Areal Flood Advisory	SGX	4 hr
Feb 26, 2:55 AM PST	Wind Advisory	SGX	37 hr
Feb 28, 12:44 PM PST	Winter Weather Advisory	SGX	71 hr
Feb 28, 12:45 PM PST	Wind Advisory	PSR	3 days
Feb 28, 12:51 PM PST	Wind Advisory	SGX	3 days
Mar 2, 1:41 PM PST	Blowing Dust Advisory	PSR	10 hr
Mar 3, 1:03 PM PST	Winter Storm Watch	SGX	24 hr
Mar 4, 1:19 PM PST	Winter Storm Warning	SGX	61 hr
Mar 5, 12:13 AM PST	Wind Advisory	PSR	46 hr
Mar 5, 2:29 AM PST	Wind Advisory	SGX	45 hr
Mar 6, 11:49 PM PST	Frost Advisory	SGX	9 hr
Mar 6, 11:49 PM PST	Frost Advisory	SGX	33 hr
Mar 7, 3:56 PM PST	Areal Flood Advisory	SGX	60 min
Mar 10, 1:19 PM PDT	Winter Storm Watch	SGX	37 hr
Mar 10, 1:28 PM PDT	Flood Watch	SGX	3 days
Mar 11, 1:15 PM PDT	Winter Storm Warning	SGX	57 hr
Mar 11, 1:26 PM PDT	Wind Advisory	SGX	4 days
Mar 12, 1:12 AM PDT	Wind Advisory	PSR	49 hr
Mar 13, 4:46 AM PDT	Areal Flood Advisory	SGX	4 hr
Mar 13, 5:22 AM PDT	Areal Flood Advisory	SGX	3 hr
Mar 13, 7:30 AM PDT	Areal Flood Advisory	SGX	119 min
Mar 14, 2:03 AM PDT	Winter Weather Advisory	SGX	20 hr
Mar 16, 2:00 AM PDT	Wind Advisory	PSR	55 hr
Mar 16, 3:13 AM PDT	Wind Advisory	SGX	56 hr
Mar 28, 12:48 PM PDT	Wind Advisory	SGX	22 hr
Mar 29, 1:07 PM PDT	Wind Advisory	SGX	4 days
Mar 29, 1:14 PM PDT	Wind Advisory	PSR	4 days
Mar 31, 12:46 PM PDT	Wind Advisory	PSR	37 hr
Apr 3, 6:08 PM PDT	Areal Flood Advisory	SGX	2 hr
Apr 24, 12:34 PM PDT	Wind Advisory	SGX	58 hr
Apr 25, 12:48 PM PDT	Winter Weather Advisory	SGX	34 hr
May 2, 12:38 PM PDT	Wind Advisory	SGX	41 hr
May 4, 12:44 PM PDT	Areal Flood Advisory	PSR	2 hr
May 6, 10:24 PM PDT	Areal Flood Advisory	PSR	3 hr
May 8, 11:37 AM PDT	Heat Advisory	SGX	57 hr
May 11, 1:02 AM PDT	Wind Advisory	PSR	3 days
May 11, 2:15 AM PDT	Wind Advisory	SGX	3 days
May 16, 12:40 AM PDT	Wind Advisory	PSR	54 hr
May 16, 2:48 AM PDT	Wind Advisory	SGX	47 hr
May 22, 2:02 PM PDT	Wind Advisory	SGX	4 days
Jun 3, 3:06 PM PDT	Special Weather Statement	PSR	24 min
Jun 3, 3:39 PM PDT	Flash Flood Warning Considerable damage threat	SGX	4 hr
Jun 3, 4:33 PM PDT	Areal Flood Advisory	SGX	3 hr
Jun 3, 5:10 PM PDT	Special Weather Statement	PSR	50 min
Jun 3, 5:17 PM PDT	Severe Thunderstorm Warning	PSR	43 min
Jun 3, 5:20 PM PDT	Areal Flood Advisory	SGX	119 min
Jun 3, 7:32 PM PDT	Areal Flood Advisory	SGX	118 min
Jun 3, 10:50 PM PDT	Areal Flood Advisory	PSR	4 hr
Jun 3, 11:12 PM PDT	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jun 3, 11:38 PM PDT	Areal Flood Advisory	PSR	4 hr
Jun 3, 11:41 PM PDT	Areal Flood Advisory	PSR	4 hr
Jun 3, 11:59 PM PDT	Flash Flood Warning Considerable damage threat	PSR	4 hr
Jun 4, 12:16 AM PDT	Flash Flood Warning Considerable damage threat	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 16, 9:53 AM PDT	Heat Advisory	SGX	58 hr
Jun 19, 12:57 PM PDT	Wind Advisory	SGX	61 hr
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, 2:01 AM PDT	Extreme Heat Watch	SGX	11 hr
Jul 6, 12:44 PM PDT	Extreme Heat Warning	SGX	4 days
Jul 6, 1:15 PM PDT	Extreme Heat Warning	PSR	4 days
Jul 7, 12:16 PM PDT	Heat Advisory	SGX	3 days
Jul 18, 3:37 PM PDT	Flash Flood Warning Considerable damage threat	SGX	113 min
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 4, 2:53 AM PDT	Extreme Heat Warning	SGX	10 days
Aug 4, 12:24 PM PDT	Heat Advisory	SGX	7 days
Aug 10, 3:48 PM PDT	Special Weather Statement	PSR	27 min
Aug 17, 11:54 AM PDT	Extreme Heat Watch	PSR	25 hr
Aug 18, 1:56 AM PDT	Extreme Heat Watch	SGX	35 hr
Aug 18, 1:13 PM PDT	Extreme Heat Warning	PSR	6 days
Aug 19, 12:28 PM PDT	Heat Advisory	SGX	4 days
Aug 19, 12:28 PM PDT	Extreme Heat Warning	SGX	4 days
Aug 24, 2:13 PM PDT	Areal Flood Advisory	SGX	119 min
Aug 24, 4:12 PM PDT	Areal Flood Advisory	SGX	2 hr
Aug 25, 2:00 AM PDT	Flood Watch	PSR	19 hr
Aug 25, 6:57 AM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Aug 25, 7:56 AM PDT	Areal Flood Advisory	PSR	2 hr
Aug 25, 1:30 PM PDT	Areal Flood Advisory	SGX	2 hr
Aug 25, 2:23 PM PDT	Areal Flood Advisory	SGX	119 min
Aug 25, 2:28 PM PDT	Severe Thunderstorm Warning	SGX	62 min
Aug 25, 3:02 PM PDT	Flash Flood Warning Considerable damage threat	SGX	3 hr
Aug 25, 3:06 PM PDT	Severe Thunderstorm Warning	SGX	54 min
Aug 25, 3:15 PM PDT	Areal Flood Advisory	SGX	119 min
Aug 25, 3:40 PM PDT	Flash Flood Warning Considerable damage threat	PSR	4 hr
Aug 25, 4:15 PM PDT	Special Weather Statement	PSR	45 min
Aug 25, 4:42 PM PDT	Areal Flood Advisory	SGX	59 min
Aug 26, 2:34 PM PDT	Areal Flood Advisory	SGX	118 min
Aug 26, 2:43 PM PDT	Areal Flood Advisory	PSR	3 hr
Aug 26, 3:38 PM PDT	Areal Flood Advisory	SGX	86 min
Aug 26, 4:11 PM PDT	Flash Flood Warning Considerable damage threat	SGX	3 hr
Aug 30, 12:19 PM PDT	Heat Advisory	SGX	3 days
Sep 3, 1:30 PM PDT	Flood Watch	PSR	35 hr
Sep 4, 1:50 PM PDT	Areal Flood Advisory	SGX	119 min
Sep 4, 2:10 PM PDT	Severe Thunderstorm Warning	PSR	50 min
Sep 4, 3:25 PM PDT	Flash Flood Warning Considerable damage threat	PSR	4 hr
Sep 7, 2:41 PM PDT	Areal Flood Advisory	PSR	2 hr
Sep 8, 2:22 PM PDT	Wind Advisory	SGX	35 hr
Sep 17, 12:17 PM PDT	Flood Watch	SGX	38 hr
Sep 17, 12:39 PM PDT	Flood Watch	PSR	34 hr
Sep 17, 1:05 PM PDT	Special Weather Statement	PSR	40 min
Sep 17, 2:15 PM PDT	Special Weather Statement	PSR	30 min
Sep 17, 2:30 PM PDT	Severe Thunderstorm Warning	PSR	45 min
Sep 17, 2:45 PM PDT	Severe Thunderstorm Warning	PSR	24 min
Sep 17, 2:59 PM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
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, 4:12 PM PDT	Areal Flood Advisory	SGX	113 min
Sep 18, 5:14 AM PDT	Areal Flood Advisory	PSR	2 hr
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, 1:10 PM PDT	Severe Thunderstorm Warning	PSR	50 min
Sep 18, 1:20 PM PDT	Flash Flood Warning Considerable damage threat	PSR	6 hr
Sep 18, 1:28 PM PDT	Areal Flood Advisory	SGX	106 min
Sep 18, 2:39 PM PDT	Areal Flood Advisory	SGX	119 min
Sep 18, 3:13 PM PDT	Areal Flood Warning	SGX	2 hr
Sep 18, 3:38 PM PDT	Flash Flood Warning Considerable damage threat	SGX	3 hr
Sep 18, 4:16 PM PDT	Special Weather Statement	SGX	44 min
Sep 18, 4:32 PM PDT	Severe Thunderstorm Warning	SGX	58 min
Sep 18, 5:05 PM PDT	Flash Flood Warning Considerable damage threat	SGX	85 min
Sep 18, 5:23 PM PDT	Special Weather Statement	PSR	37 min
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, 7:08 PM PDT	Areal Flood Warning	PSR	107 min
Sep 18, 7:11 PM PDT	Special Weather Statement	PSR	49 min
Sep 18, 7:12 PM PDT	Areal Flood Warning	PSR	103 min
Sep 18, 7:51 PM PDT	Special Weather Statement	PSR	39 min
Sep 18, 7:53 PM PDT	Areal Flood Advisory	SGX	59 min
Sep 18, 8:15 PM PDT	Special Weather Statement	SGX	45 min
Sep 18, 8:31 PM PDT	Special Weather Statement	PSR	14 min
Sep 26, 12:03 PM PDT	Flood Watch	SGX	31 hr
Sep 26, 2:36 PM PDT	Areal Flood Advisory	PSR	3 hr
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, 3:13 PM PDT	Areal Flood Advisory	PSR	3 hr
Sep 27, 4:29 PM PDT	Areal Flood Advisory	SGX	115 min
Sep 27, 4:42 PM PDT	Areal Flood Advisory	SGX	108 min
Sep 27, 4:58 PM PDT	Flash Flood Warning Considerable damage threat	PSR	3 hr
Sep 27, 5:22 PM PDT	Special Weather Statement	PSR	38 min
Sep 27, 5:57 PM PDT	Areal Flood Advisory	PSR	3 hr
Oct 2, 12:17 PM PDT	Wind Advisory	SGX	41 hr
Oct 8, 1:37 PM PDT	Flood Watch	PSR	5 days
Oct 10, 2:27 PM PDT	Areal Flood Advisory	SGX	118 min
Oct 12, 1:07 PM PDT	Wind Advisory	SGX	34 hr
Oct 13, 2:15 AM PDT	Flash Flood Watch	SGX	39 hr
Oct 13, 8:27 AM PDT	Severe Thunderstorm Warning	PSR	27 min
Oct 13, 8:52 AM PDT	Severe Thunderstorm Warning	PSR	38 min
Oct 14, 2:27 AM PDT	Wind Advisory	SGX	13 hr
Oct 14, 12:10 PM PDT	Areal Flood Advisory	SGX	80 min
Oct 21, 12:55 PM PDT	Wind Advisory	SGX	35 hr
Oct 26, 12:32 PM PDT	Heat Advisory	SGX	3 days
Nov 13, 11:49 AM PST	Flood Watch	SGX	58 hr
Nov 13, 11:50 AM PST	Flood Watch	PSR	56 hr
Nov 15, 8:34 AM PST	Areal Flood Advisory	SGX	118 min
Nov 15, 8:47 AM PST	Areal Flood Advisory	SGX	117 min
Nov 15, 9:45 AM PST	Areal Flood Advisory	SGX	118 min
Nov 15, 10:50 AM PST	Areal Flood Advisory	SGX	116 min
Nov 15, 11:23 AM PST	Areal Flood Advisory	SGX	119 min
Nov 15, 12:50 PM PST	Areal Flood Advisory	SGX	119 min
Nov 15, 2:01 PM PST	Areal Flood Advisory	SGX	119 min
Nov 15, 2:23 PM PST	Areal Flood Advisory	SGX	119 min
Nov 16, 1:14 AM PST	Areal Flood Advisory	SGX	117 min
Nov 19, 11:42 AM PST	Winter Storm Watch	SGX	15 hr
Nov 20, 2:22 AM PST	Winter Storm Warning	SGX	56 hr
Nov 20, 12:12 PM PST	Flood Watch	PSR	28 hr
Nov 20, 10:36 PM PST	Areal Flood Advisory	SGX	3 hr
Nov 21, 1:39 AM PST	Areal Flood Advisory	SGX	119 min
Dec 21, 11:47 AM PST	Flood Watch	SGX	4 days
Dec 22, 2:18 AM PST	Dense Fog Advisory	SGX	8 hr
Dec 22, 12:19 PM PST	Wind Advisory	SGX	58 hr
Dec 24, 10:52 AM PST	Areal Flood Advisory	SGX	7 hr
Dec 24, 1:40 PM PST	Areal Flood Advisory	SGX	3 hr
Dec 25, 6:39 AM PST	Dense Fog Advisory	PSR	81 min
Dec 25, 9:53 AM PST	Flood Watch	SGX	30 hr
Dec 27, 3:13 PM PST	High Wind Watch	SGX	21 hr
Dec 28, 11:56 AM PST	Wind Advisory	SGX	49 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	14
Mesoscale Discussion	1
Special Weather Statement	13
Flooding
Areal Flood Warning	3
Flash Flood Warning	17
Flash Flood Watch	1
Flood Watch	14
Areal Flood Advisory	55
Winter
Winter Storm Warning	4
Winter Storm Watch	4
Winter Weather Advisory	3
Heat
Extreme Heat Warning	8
Extreme Heat Watch	6
Heat Advisory	7
Cold
Freeze Warning	1
Freeze Watch	1
Frost Advisory	4
Wind and dust
High Wind Warning	3
High Wind Watch	4
Blowing Dust Advisory	1
Wind Advisory	34
Fire
Red Flag Warning	3
Fire Weather Watch	5
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 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.