Alert archive / California / Flash Flood Warnings / 2023
Flash Flood Warnings in California, August 2023
94 flash flood warnings in August 2023. 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 August 2023. Tap one for its archive.
- Flash Flood Warnings
- 94
- Busiest day
- August 20, 202328 flash flood warnings
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
|---|---|---|---|---|
| Aug 1, 2:41 PM PDT | Flash Flood Warning | SGX | San Diego | 2 hr |
| Aug 1, 3:52 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 1, 4:11 PM PDT | Flash Flood Warning | VEF | Inyo, San Bernardino | 3 hr |
| Aug 2, 9:21 AM PDT | Flash Flood Warning | VEF | San Bernardino | 114 min |
| Aug 2, 11:07 AM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 2, 2:17 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 11, 1:31 PM PDT | Flash Flood Warning | VEF | Inyo | 3 hr |
| Aug 11, 3:41 PM PDT | Flash Flood Warning | VEF | Inyo | 3 hr |
| Aug 13, 3:58 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 13, 6:35 PM PDT | Flash Flood Warning | PSR | Imperial, Riverside | 3 hr |
| Aug 15, 4:15 PM PDT | Flash Flood Warning | SGX | San Diego | 87 min |
| Aug 16, 1:19 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 16, 1:35 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 16, 2:42 PM PDT | Flash Flood Warning | SGX | San Diego | 3 hr |
| Aug 16, 4:48 PM PDT | Flash Flood Warning | SGX | Riverside, San Diego | 3 hr |
| Aug 18, 4:09 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 18, 4:47 PM PDT | Flash Flood Warning | PSR | Riverside, San Bernardino | 3 hr |
| Aug 18, 4:47 PM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Aug 18, 4:56 PM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Aug 18, 5:40 PM PDT | Flash Flood Warning | VEF | San Bernardino | 5 hr |
| Aug 18, 6:05 PM PDT | Flash Flood Warning | REV | Alpine, Mono | 85 min |
| Aug 18, 7:09 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 18, 8:21 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 18, 9:19 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 19, 4:49 AM PDT | Flash Flood Warning | PSR | Imperial | 4 hr |
| Aug 19, 4:55 AM PDT | Flash Flood Warning | SGX | San Diego | 114 min |
| Aug 19, 8:46 AM PDT | Flash Flood Warning | PSR | Imperial, Riverside | 3 hr |
| Aug 19, 12:16 PM PDT | Flash Flood Warning | VEF | Inyo | 3 hr |
| Aug 19, 1:15 PM PDT | Flash Flood Warning | EKA | Trinity | 3 hr |
| Aug 19, 1:16 PM PDT | Flash Flood Warning | HNX | Kern | 84 min |
| Aug 19, 1:36 PM PDT | Flash Flood Warning | VEF | Inyo | 3 hr |
| Aug 19, 1:53 PM PDT | Flash Flood Warning | HNX | Kern | 112 min |
| Aug 19, 2:01 PM PDT | Flash Flood Warning | VEF | Inyo | 3 hr |
| Aug 19, 2:51 PM PDT | Flash Flood Warning | HNX | Kern | 72 min |
| Aug 19, 3:12 PM PDT | Flash Flood Warning | VEF | Inyo | 3 hr |
| Aug 19, 3:37 PM PDT | Flash Flood Warning | MFR | Siskiyou | 113 min |
| Aug 19, 3:50 PM PDT | Flash Flood Warning | EKA | Trinity | 85 min |
| Aug 19, 4:56 PM PDT | Flash Flood Warning | STO | Shasta, Tehama | 2 hr |
| Aug 19, 6:29 PM PDT | Flash Flood Warning | MFR | Siskiyou | 61 min |
| Aug 19, 7:11 PM PDT | Flash Flood Warning | MFR | Siskiyou | 114 min |
| Aug 20, 10:54 AM PDT | Flash Flood Warning | LOX | Los Angeles | 8 hr |
| Aug 20, 11:25 AM PDT | Flash Flood Warning | SGX | San Diego | 3 hr |
| Aug 20, 11:48 AM PDT | Flash Flood Warning | LOX | Los Angeles, Ventura | 8 hr |
| Aug 20, 11:55 AM PDT | Flash Flood Warning | PSR | Imperial | 6 hr |
| Aug 20, 12:02 PM PDT | Flash Flood Warning | HNX | Kern | 3 hr |
| Aug 20, 12:03 PM PDT | Flash Flood Warning | HNX | Kern | 5 hr |
| Aug 20, 12:48 PM PDT | Flash Flood Warning | SGX | San Diego | 3 hr |
| Aug 20, 1:04 PM PDT | Flash Flood Warning | SGX | San Diego | 3 hr |
| Aug 20, 1:32 PM PDT | Flash Flood Warning | PSR | Imperial, Riverside | 4 hr |
| Aug 20, 1:40 PM PDT | Flash Flood Warning | SGX | Riverside | 10 hr |
| Aug 20, 1:51 PM PDT | Flash Flood Warning | SGX | Riverside | 10 hr |
| Aug 20, 2:16 PM PDT | Flash Flood Warning | HNX | Kern | 3 hr |
| Aug 20, 2:30 PM PDT | Flash Flood Warning | PSR | Imperial, Riverside, San Bernardino | 5 hr |
| Aug 20, 2:31 PM PDT | Flash Flood Warning | VEF | San Bernardino | 4 hr |
| Aug 20, 2:35 PM PDT | Flash Flood Warning | HNX | Kern | 8 hr |
| Aug 20, 2:58 PM PDT | Flash Flood Warning | SGX | Riverside, San Bernardino | 5 hr |
| Aug 20, 3:06 PM PDT | Flash Flood Warning | PSR | Imperial | 3 hr |
| Aug 20, 3:10 PM PDT | Flash Flood Warning | VEF | Inyo, San Bernardino | 18 hr |
| Aug 20, 3:21 PM PDT | Flash Flood Warning | HNX | Kern | 2 hr |
| Aug 20, 3:24 PM PDT | Flash Flood Warning | VEF | Inyo | 8 hr |
| Aug 20, 3:36 PM PDT | Flash Flood Warning | HNX | Kern | 114 min |
| Aug 20, 3:46 PM PDT | Flash Flood Warning | SGX | San Diego | 74 min |
| Aug 20, 4:00 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 20, 4:02 PM PDT | Flash Flood Warning | HNX | Kern, Tulare | 9 hr |
| Aug 20, 4:04 PM PDT | Flash Flood Warning | HNX | Kern | 8 hr |
| Aug 20, 4:20 PM PDT | Flash Flood Warning | LOX | Ventura | 3 hr |
| Aug 20, 5:00 PM PDT | Flash Flood Warning | HNX | Kern | 8 hr |
| Aug 20, 5:18 PM PDT | Flash Flood Warning | SGX | Riverside, San Bernardino | 3 hr |
| Aug 20, 5:19 PM PDT | Flash Flood Warning | HNX | Kern | 6 hr |
| Aug 20, 5:25 PM PDT | Flash Flood Warning | LOX | Ventura | 2 hr |
| Aug 20, 5:26 PM PDT | Flash Flood Warning | HNX | Kern | 7 hr |
| Aug 20, 5:36 PM PDT | Flash Flood Warning | HNX | Kern | 6 hr |
| Aug 20, 5:37 PM PDT | Flash Flood Warning | VEF | Inyo, San Bernardino | 15 hr |
| Aug 20, 5:48 PM PDT | Flash Flood Warning | LOX | Ventura | 117 min |
| Aug 20, 5:59 PM PDT | Flash Flood Warning | HNX | Kern | 5 hr |
| Aug 20, 6:02 PM PDT | Flash Flood Warning | HNX | Kern | 6 hr |
| Aug 20, 6:29 PM PDT | Flash Flood Warning | LOX | Los Angeles | 10 hr |
| Aug 20, 6:50 PM PDT | Flash Flood Warning | HNX | Kern | 5 hr |
| Aug 20, 7:04 PM PDT | Flash Flood Warning | VEF | San Bernardino | 14 hr |
| Aug 20, 7:22 PM PDT | Flash Flood Warning | SGX | San Bernardino | 4 hr |
| Aug 20, 7:31 PM PDT | Flash Flood Warning | SGX | Riverside | 4 hr |
| Aug 20, 7:44 PM PDT | Flash Flood Warning | LOX | Ventura | 7 hr |
| Aug 20, 9:12 PM PDT | Flash Flood Warning | HNX | Kern | 3 hr |
| Aug 20, 10:59 PM PDT | Flash Flood Warning | VEF | Inyo | 6 hr |
| Aug 20, 11:27 PM PDT | Flash Flood Warning | SGX | Riverside, San Bernardino | 5 hr |
| Aug 21, 1:21 AM PDT | Flash Flood Warning | REV | Mono | 6 hr |
| Aug 21, 1:31 AM PDT | Flash Flood Warning | VEF | Inyo | 5 hr |
| Aug 21, 3:27 PM PDT | Flash Flood Warning | HNX | Kern | 109 min |
| Aug 21, 3:52 PM PDT | Flash Flood Warning | LOX | San Luis Obispo | 2 hr |
| Aug 21, 4:28 PM PDT | Flash Flood Warning | MFR | Siskiyou | 3 hr |
| Aug 21, 5:13 PM PDT | Flash Flood Warning | HNX | Kern | 3 hr |
| Aug 24, 1:30 PM PDT | Flash Flood Warning | VEF | Inyo, San Bernardino | 3 hr |
| Aug 24, 2:41 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 24, 5:02 PM PDT | Flash Flood Warning | EKA | Trinity | 66 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
Nearby
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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.