Alert archive / California / Flash Flood Watches
Flash Flood Watches in California, 2015
51 flash flood watches in 2015. 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 watches reaches back to 2005.
Flash Flood Watches by county
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Flash Flood Watches
- 51
- Busiest month
- July21 flash flood watches
- Busiest day
- July 30, 20155 flash flood watches
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 |
|---|---|---|---|---|
| Feb 4, 2:59 AM PST | Flash Flood Watch | MTR | Marin, Napa, Sonoma | 59 hr |
| Feb 5, 1:52 PM PST | Flash Flood Watch | MFR | Siskiyou | 28 hr |
| Feb 6, 6:19 PM PST | Flash Flood Watch | HNX | 48 hr | |
| Feb 6, 6:57 PM PST | Flash Flood Watch | STO | Tuolumne | 57 hr |
| Feb 22, 1:09 PM PST | Flash Flood Watch | SGX | Orange, Riverside, San Diego | 15 hr |
| May 14, 12:58 PM PDT | Flash Flood Watch | SGX | Orange, Riverside, San Bernardino, San Diego | 27 hr |
| Jun 9, 1:29 PM PDT | Flash Flood Watch | REV | Alpine, El Dorado, Lassen, Modoc, Mono, Nevada and 3 more | 33 hr |
| Jun 10, 9:25 AM PDT | Flash Flood Watch | VEF | Inyo | 14 hr |
| Jun 12, 3:15 AM PDT | Flash Flood Watch | LOX | Santa Barbara | 18 hr |
| Jul 4, 2:38 AM PDT | Flash Flood Watch | REV | Alpine, El Dorado, Mono, Nevada, Placer | 16 hr |
| Jul 6, 3:20 AM PDT | Flash Flood Watch | REV | Alpine, El Dorado, Mono, Nevada, Placer | 18 hr |
| Jul 6, 9:32 PM PDT | Flash Flood Watch | REV | Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more | 21 hr |
| Jul 7, 2:52 AM PDT | Flash Flood Watch | VEF | Inyo | 17 hr |
| Jul 7, 10:04 PM PDT | Flash Flood Watch | REV | Alpine, El Dorado, Lassen, Modoc, Mono, Nevada and 3 more | 23 hr |
| Jul 8, 2:27 AM PDT | Flash Flood Watch | STO | 19 hr | |
| Jul 8, 2:40 AM PDT | Flash Flood Watch | MFR | Siskiyou | 20 hr |
| Jul 8, 3:48 AM PDT | Flash Flood Watch | EKA | 17 hr | |
| Jul 16, 12:35 PM PDT | Flash Flood Watch | PSR | 3 days | |
| Jul 16, 2:29 PM PDT | Flash Flood Watch | VEF | Inyo, San Bernardino | 4 days |
| Jul 18, 2:59 AM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 43 hr |
| Jul 18, 11:34 AM PDT | Flash Flood Watch | HNX | 59 hr | |
| Jul 18, 2:20 PM PDT | Flash Flood Watch | LOX | Los Angeles, Santa Barbara | 53 hr |
| Jul 19, 2:15 PM PDT | Flash Flood Watch | STO | 31 hr | |
| Jul 21, 6:16 AM PDT | Flash Flood Watch | REV | Alpine, El Dorado, Mono, Nevada, Placer | 12 hr |
| Jul 29, 8:16 PM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 25 hr |
| Jul 29, 8:30 PM PDT | Flash Flood Watch | VEF | Inyo, San Bernardino | 24 hr |
| Jul 29, 8:54 PM PDT | Flash Flood Watch | HNX | 23 hr | |
| Jul 29, 9:07 PM PDT | Flash Flood Watch | LOX | Los Angeles, Santa Barbara | 25 hr |
| Jul 30, 10:53 AM PDT | Flash Flood Watch | PSR | 9 hr | |
| Jul 31, 2:50 AM PDT | Flash Flood Watch | VEF | Inyo, San Bernardino | 44 hr |
| Aug 25, 1:04 PM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 29 hr |
| Sep 7, 9:22 PM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 71 hr |
| Sep 9, 3:10 AM PDT | Flash Flood Watch | LOX | 18 hr | |
| Sep 10, 3:14 AM PDT | Flash Flood Watch | LOX | 16 hr | |
| Sep 20, 12:45 PM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 52 hr |
| Sep 20, 12:54 PM PDT | Flash Flood Watch | PSR | 38 hr | |
| Sep 20, 2:19 PM PDT | Flash Flood Watch | VEF | San Bernardino | 21 hr |
| Oct 4, 10:58 PM PDT | Flash Flood Watch | LOX | Los Angeles | 8 hr |
| Oct 15, 9:24 PM PDT | Flash Flood Watch | VEF | Inyo, San Bernardino | 3 days |
| Oct 15, 9:30 PM PDT | Flash Flood Watch | LOX | 23 hr | |
| Oct 16, 3:47 AM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 16 hr |
| Oct 16, 4:51 AM PDT | Flash Flood Watch | HNX | 15 hr | |
| Oct 17, 3:14 AM PDT | Flash Flood Watch | LOX | Santa Barbara | 17 hr |
| Oct 17, 3:25 AM PDT | Flash Flood Watch | SGX | San Bernardino | 17 hr |
| Oct 17, 4:44 AM PDT | Flash Flood Watch | HNX | 15 hr | |
| Nov 2, 12:45 PM PST | Flash Flood Watch | STO | Lake, Solano | 5 hr |
| Nov 8, 1:36 PM PST | Flash Flood Watch | STO | Amador, Calaveras, Colusa, El Dorado, Lake, Placer and 3 more | 31 hr |
| Dec 9, 12:02 PM PST | Flash Flood Watch | MFR | Siskiyou | 22 hr |
| Dec 11, 9:08 AM PST | Flash Flood Watch | MFR | Siskiyou | 59 hr |
| Dec 21, 8:56 AM PST | Flash Flood Watch | STO | Amador, Calaveras, El Dorado, Placer, Tuolumne | 23 hr |
| Dec 21, 8:59 AM PST | Flash Flood Watch | HNX | 31 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- San Bernardino County13
- Riverside County8
- San Diego County8
- El Dorado County8
- Placer County8
- Alpine County6
- Mono County6
- Nevada County6
- Inyo County6
- Siskiyou County4
- Santa Barbara County4
- Tuolumne County3
- Lassen County3
- Plumas County3
- Sierra County3
- Los Angeles County3
- Orange County2
- Modoc County2
- Lake County2
- Solano County2
- Amador County2
- Calaveras County2
- Marin County1
- Napa County1
- Sonoma County1
- Colusa County1
- Yolo County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20142016
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.