Alert archive / California / Flash Flood Warnings

Flash Flood Warnings in California, 2022

307 flash flood warnings in 2022. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of flash flood warnings reaches back to 1986.

Flash Flood Warnings by county

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

Flash Flood Warnings: 307
Busiest month: August154 flash flood warnings
Busiest day: July 31, 202222 flash flood warnings

Over time

By month

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	Counties	Lasted
Mar 28, 5:54 AM PDT	Flash Flood Warning Considerable damage threat	LOX	Santa Barbara	104 min
Mar 28, 1:53 PM PDT	Flash Flood Warning Considerable damage threat	MTR	Monterey	37 min
Jun 12, 5:12 PM PDT	Flash Flood Warning Considerable damage threat	STO	Lassen, Plumas	6 hr
Jun 22, 3:20 PM PDT	Flash Flood Warning	SGX	Riverside	105 min
Jun 22, 4:29 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	2 hr
Jun 22, 4:39 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	3 hr
Jun 23, 2:21 PM PDT	Flash Flood Warning	REV	Plumas	3 hr
Jun 25, 5:05 PM PDT	Flash Flood Warning Considerable damage threat	STO	Lassen, Plumas	4 hr
Jun 25, 5:35 PM PDT	Flash Flood Warning Considerable damage threat	STO	Lassen, Plumas	3 hr
Jun 25, 5:44 PM PDT	Flash Flood Warning	REV	Lassen	3 hr
Jul 18, 3:34 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Jul 25, 2:38 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside	2 hr
Jul 25, 5:59 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Jul 26, 3:25 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Jul 28, 11:29 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	2 hr
Jul 29, 5:45 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Jul 29, 6:32 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Jul 29, 7:58 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Jul 29, 9:19 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Jul 29, 10:51 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Jul 30, 1:05 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Jul 30, 4:32 PM PDT	Flash Flood Warning Considerable damage threat	STO	Lassen, Plumas	5 hr
Jul 30, 5:21 PM PDT	Flash Flood Warning	SGX	San Bernardino	3 hr
Jul 30, 6:11 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside, San Bernardino	97 min
Jul 30, 7:06 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	2 hr
Jul 30, 7:17 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	2 hr
Jul 31, 10:12 AM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Jul 31, 10:38 AM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Jul 31, 10:53 AM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside, San Bernardino	2 hr
Jul 31, 11:24 AM PDT	Flash Flood Warning Considerable damage threat	SGX	San Bernardino	4 hr
Jul 31, 11:41 AM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo, San Bernardino	6 hr
Jul 31, 12:02 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo, San Bernardino	5 hr
Jul 31, 12:45 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Jul 31, 1:04 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo, San Bernardino	116 min
Jul 31, 1:21 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Bernardino	3 hr
Jul 31, 1:30 PM PDT	Flash Flood Warning Considerable damage threat	HNX	Tulare	2 hr
Jul 31, 1:58 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Jul 31, 2:30 PM PDT	Flash Flood Warning	HNX	Kern, Tulare	110 min
Jul 31, 3:07 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo, San Bernardino	113 min
Jul 31, 3:40 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	80 min
Jul 31, 3:41 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	4 hr
Jul 31, 4:51 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Jul 31, 4:53 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo, San Bernardino	5 hr
Jul 31, 4:57 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 1, 11:33 AM PDT	Flash Flood Warning	SGX	San Bernardino	3 hr
Aug 1, 12:45 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	5 hr
Aug 1, 12:46 PM PDT	Flash Flood Warning	HNX	Kern	98 min
Aug 1, 12:47 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside, San Diego	2 hr
Aug 1, 1:25 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside, San Bernardino	3 hr
Aug 1, 1:40 PM PDT	Flash Flood Warning	HNX	Kern	3 hr
Aug 1, 2:36 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside, San Bernardino	2 hr
Aug 1, 2:43 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Bernardino	2 hr
Aug 1, 3:44 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 1, 4:33 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	110 min
Aug 1, 5:12 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Aug 2, 2:43 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Aug 2, 6:10 PM PDT	Flash Flood Warning	EKA	Trinity	2 hr
Aug 2, 6:10 PM PDT	Flash Flood Warning	MFR	Siskiyou	2 hr
Aug 2, 7:32 PM PDT	Flash Flood Warning	MFR	Siskiyou	2 hr
Aug 3, 3:03 PM PDT	Flash Flood Warning	REV	Alpine, Mono	117 min
Aug 3, 4:43 PM PDT	Flash Flood Warning EmergencyCatastrophic damage threat	REV	Alpine, Mono	3 hr
Aug 3, 5:56 PM PDT	Flash Flood Warning	REV	Alpine, Mono	3 hr
Aug 3, 6:42 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Aug 4, 12:02 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Aug 4, 12:39 PM PDT	Flash Flood Warning Considerable damage threat	HNX	Tulare	59 min
Aug 4, 1:04 PM PDT	Flash Flood Warning	REV	Alpine, Mono	5 hr
Aug 4, 1:23 PM PDT	Flash Flood Warning	HNX	Fresno, Tulare	59 min
Aug 4, 1:44 PM PDT	Flash Flood Warning	HNX	Kern	59 min
Aug 4, 1:46 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 4, 2:08 PM PDT	Flash Flood Warning	HNX	Kern	112 min
Aug 4, 2:17 PM PDT	Flash Flood Warning	HNX	Tulare	3 hr
Aug 4, 2:22 PM PDT	Flash Flood Warning	HNX	Mariposa, Tuolumne	83 min
Aug 4, 2:40 PM PDT	Flash Flood Warning	HNX	Kern	65 min
Aug 4, 4:05 PM PDT	Flash Flood Warning	HNX	Madera	115 min
Aug 4, 4:14 PM PDT	Flash Flood Warning	HNX	Fresno	106 min
Aug 4, 4:38 PM PDT	Flash Flood Warning	HNX	Kern	2 hr
Aug 4, 5:24 PM PDT	Flash Flood Warning	HNX	Kern, Tulare	111 min
Aug 5, 8:46 AM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	4 hr
Aug 5, 9:20 AM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Aug 5, 12:01 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Bernardino	3 hr
Aug 5, 4:05 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 5, 4:16 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside, San Bernardino	69 min
Aug 5, 6:05 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	115 min
Aug 7, 2:53 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside, San Bernardino	3 hr
Aug 8, 1:59 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 8, 2:17 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Aug 8, 3:05 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 8, 3:07 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial, Riverside	4 hr
Aug 8, 3:44 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside	3 hr
Aug 8, 4:31 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	3 hr
Aug 8, 4:36 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside, San Bernardino	3 hr
Aug 8, 5:10 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	119 min
Aug 8, 5:52 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	83 min
Aug 8, 6:08 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Aug 8, 7:12 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	3 hr
Aug 8, 8:30 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Aug 8, 9:34 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	3 hr
Aug 9, 1:39 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	3 hr
Aug 9, 1:45 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo, San Bernardino	3 hr
Aug 9, 3:17 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	3 hr
Aug 9, 4:55 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	4 hr
Aug 10, 4:05 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	2 hr
Aug 11, 4:22 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 11, 4:25 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Aug 11, 5:30 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	3 hr
Aug 11, 6:43 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	3 hr
Aug 12, 11:00 AM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Aug 12, 4:48 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	3 hr
Aug 12, 5:29 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	3 hr
Aug 12, 8:00 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 12, 8:13 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	6 hr
Aug 12, 9:25 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	6 hr
Aug 12, 10:29 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	3 hr
Aug 12, 11:43 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside	3 hr
Aug 13, 12:27 AM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial, Riverside	4 hr
Aug 13, 12:33 AM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	3 hr
Aug 13, 1:18 AM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Aug 13, 1:40 AM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Aug 13, 12:55 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 13, 1:32 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside, San Bernardino	118 min
Aug 13, 3:05 PM PDT	Flash Flood Warning	SGX	San Diego	3 hr
Aug 13, 3:06 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Aug 13, 3:43 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 13, 3:48 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside, San Bernardino	4 hr
Aug 13, 3:57 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Aug 13, 4:47 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 13, 5:16 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Aug 13, 6:05 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Aug 13, 7:39 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 14, 12:27 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 14, 1:53 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 14, 2:22 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 14, 3:09 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	2 hr
Aug 14, 3:46 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 14, 4:33 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 14, 5:53 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Aug 14, 6:15 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Aug 14, 7:19 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	3 hr
Aug 14, 8:16 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Aug 14, 9:46 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Aug 15, 1:18 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside, San Bernardino	3 hr
Aug 15, 2:24 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo, San Bernardino	3 hr
Aug 15, 2:33 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Aug 15, 3:00 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside, San Bernardino	4 hr
Aug 15, 3:03 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 15, 3:25 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Aug 15, 3:58 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	3 hr
Aug 15, 4:57 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Aug 16, 11:45 AM PDT	Flash Flood Warning Considerable damage threat	SGX	San Bernardino	3 hr
Aug 16, 1:12 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside, San Bernardino	3 hr
Aug 16, 1:55 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Bernardino	3 hr
Aug 16, 2:02 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Aug 16, 2:37 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 16, 3:14 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside, San Bernardino	4 hr
Aug 16, 3:29 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 16, 3:55 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside	2 hr
Aug 16, 4:36 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	102 min
Aug 16, 4:53 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 17, 2:12 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 17, 3:40 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside	110 min
Aug 17, 4:15 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 17, 6:06 PM PDT	Flash Flood Warning	MFR	Siskiyou	61 min
Aug 18, 12:51 PM PDT	Flash Flood Warning	REV	Plumas	3 hr
Aug 18, 4:21 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	106 min
Aug 18, 6:50 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 18, 8:27 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Aug 18, 11:25 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Aug 19, 5:36 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 20, 1:40 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	2 hr
Aug 20, 3:09 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 20, 4:08 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside, San Bernardino	115 min
Aug 24, 12:06 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	3 hr
Aug 24, 1:25 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 24, 1:34 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside	97 min
Aug 24, 1:44 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	84 min
Aug 24, 1:50 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	3 hr
Aug 24, 2:06 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	2 hr
Aug 24, 2:30 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Bernardino	3 hr
Aug 24, 2:30 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	4 hr
Aug 24, 2:33 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 24, 2:44 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	3 hr
Aug 24, 4:06 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	3 hr
Aug 24, 4:12 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	3 hr
Aug 24, 4:16 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	3 hr
Aug 24, 4:27 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	3 hr
Aug 24, 4:32 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	88 min
Aug 24, 5:37 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 24, 5:49 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial, Riverside	4 hr
Aug 24, 5:56 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside, San Bernardino	110 min
Aug 24, 6:52 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial, Riverside	3 hr
Aug 24, 7:40 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 24, 8:39 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 24, 9:08 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 25, 5:14 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	88 min
Aug 25, 5:33 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Aug 25, 9:21 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	5 hr
Aug 26, 4:06 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Aug 28, 2:37 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Sep 3, 2:43 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Orange	3 hr
Sep 3, 3:38 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Sep 3, 4:28 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Sep 4, 2:01 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Bernardino	3 hr
Sep 9, 10:29 AM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	5 hr
Sep 9, 11:24 AM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Sep 9, 12:06 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Sep 9, 1:01 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	3 hr
Sep 9, 1:22 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	2 hr
Sep 9, 2:17 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	5 hr
Sep 9, 3:07 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Sep 9, 3:26 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside, San Diego	3 hr
Sep 9, 4:10 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	5 hr
Sep 9, 7:28 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside, San Bernardino	3 hr
Sep 9, 7:39 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	3 hr
Sep 10, 9:11 AM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial, Riverside	3 hr
Sep 10, 1:04 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Sep 10, 2:14 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Sep 10, 3:36 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Sep 10, 4:05 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	4 hr
Sep 10, 5:22 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Sep 10, 6:14 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	46 min
Sep 11, 2:07 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Sep 11, 2:27 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	3 hr
Sep 11, 3:18 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside	3 hr
Sep 11, 3:29 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside, San Bernardino	3 hr
Sep 11, 3:33 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Sep 11, 4:04 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside	3 hr
Sep 11, 4:37 PM PDT	Flash Flood Warning	LOX	Santa Barbara	2 hr
Sep 11, 5:09 PM PDT	Flash Flood Warning	LOX	Santa Barbara	2 hr
Sep 11, 5:24 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Orange, Riverside	3 hr
Sep 11, 5:59 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Bernardino	3 hr
Sep 11, 6:10 PM PDT	Flash Flood Warning	SGX	San Bernardino	3 hr
Sep 11, 6:44 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Bernardino	3 hr
Sep 11, 6:56 PM PDT	Flash Flood Warning	LOX	Los Angeles	2 hr
Sep 11, 7:18 PM PDT	Flash Flood Warning	LOX	Los Angeles	87 min
Sep 11, 7:46 PM PDT	Flash Flood Warning Considerable damage threat	LOX	Los Angeles	104 min
Sep 11, 7:50 PM PDT	Flash Flood Warning	LOX	Los Angeles, Ventura	3 hr
Sep 12, 11:54 AM PDT	Flash Flood Warning	HNX	Kern	3 hr
Sep 12, 1:11 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo, San Bernardino	3 hr
Sep 12, 1:27 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside, San Bernardino	5 hr
Sep 12, 1:54 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Bernardino	3 hr
Sep 12, 1:54 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Sep 12, 2:37 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside, San Bernardino	3 hr
Sep 12, 2:55 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Sep 12, 3:06 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Bernardino	3 hr
Sep 12, 3:51 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside	3 hr
Sep 12, 4:03 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Bernardino	3 hr
Sep 12, 4:43 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside, San Bernardino	3 hr
Sep 12, 5:25 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Sep 12, 5:48 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Bernardino	2 hr
Sep 12, 6:11 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Sep 12, 7:31 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Sep 13, 1:30 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	5 hr
Sep 13, 2:37 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Sep 13, 3:24 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Sep 13, 3:35 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Sep 13, 4:31 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Sep 13, 5:14 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Sep 13, 6:34 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Sep 19, 6:14 PM PDT	Flash Flood Warning Considerable damage threat	STO	Yolo	3 hr
Sep 20, 5:48 PM PDT	Flash Flood Warning	MFR	Siskiyou	57 min
Sep 23, 4:11 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Sep 23, 4:55 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Sep 24, 5:15 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside, San Bernardino	3 hr
Sep 28, 12:05 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside, San Bernardino	4 hr
Sep 28, 12:05 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Sep 28, 1:18 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Sep 28, 2:59 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	3 hr
Sep 28, 3:25 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	3 hr
Sep 28, 4:23 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside, San Bernardino	82 min
Sep 29, 2:06 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	114 min
Oct 1, 2:48 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	6 hr
Oct 3, 1:16 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Oct 6, 5:01 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Oct 10, 12:56 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Oct 10, 1:57 PM PDT	Flash Flood Warning	HNX	Kern	54 min
Oct 10, 2:23 PM PDT	Flash Flood Warning Considerable damage threat	VEF	Inyo	3 hr
Oct 10, 2:34 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Oct 10, 3:07 PM PDT	Flash Flood Warning Considerable damage threat	HNX	Kern	71 min
Oct 11, 2:59 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Oct 11, 3:19 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside, San Bernardino	2 hr
Oct 12, 1:25 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Oct 15, 10:47 AM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	118 min
Oct 15, 1:06 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Oct 15, 1:30 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial, Riverside	6 hr
Oct 15, 2:28 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Oct 15, 2:38 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial, Riverside	3 hr
Oct 15, 3:06 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial, Riverside	4 hr
Oct 15, 3:07 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Oct 15, 3:15 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside, San Diego	3 hr
Oct 15, 3:29 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Oct 15, 3:32 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside	4 hr
Oct 15, 3:48 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside	3 hr
Oct 15, 4:12 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Riverside, San Bernardino	5 hr
Oct 15, 4:35 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Oct 15, 4:49 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Oct 15, 5:11 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Oct 15, 5:36 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	93 min
Oct 15, 5:46 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	4 hr
Nov 8, 10:02 AM PST	Flash Flood Warning	SGX	Riverside, San Bernardino	3 hr
Nov 8, 12:40 PM PST	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	3 hr
Nov 8, 3:56 PM PST	Flash Flood Warning	LOX	Los Angeles	9 min
Nov 8, 4:09 PM PST	Flash Flood Warning Considerable damage threat	LOX	Los Angeles	26 min
Dec 10, 2:03 PM PST	Flash Flood Warning	MTR	Monterey	4 hr
Dec 10, 2:10 PM PST	Flash Flood Warning	MTR	Monterey	4 hr
Dec 10, 2:16 PM PST	Flash Flood Warning	MTR	Monterey	5 hr
Dec 10, 5:29 PM PST	Flash Flood Warning Considerable damage threat	HNX	Mariposa	3 hr
Dec 10, 5:31 PM PST	Flash Flood Warning Considerable damage threat	HNX	Madera, Mariposa	3 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record 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. Rebuilt daily.