Alert archive / California / Flash Flood Watches
Flash Flood Watches in California, 2012
38 flash flood watches in 2012. 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 2012. Tap one for its archive.
- Flash Flood Watches
- 38
- Busiest month
- August16 flash flood watches
- Busiest day
- August 17, 20124 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 |
|---|---|---|---|---|
| Jul 11, 2:15 PM PDT | Flash Flood Watch | SGX | Orange, Riverside, San Bernardino, San Diego | 55 hr |
| Jul 12, 10:56 AM PDT | Flash Flood Watch | VEF | Inyo, San Bernardino | 61 hr |
| Jul 12, 2:17 PM PDT | Flash Flood Watch | LOX | 28 hr | |
| Jul 12, 8:35 PM PDT | Flash Flood Watch | HNX | 22 hr | |
| Jul 13, 1:18 PM PDT | Flash Flood Watch | PSR | 11 hr | |
| Jul 14, 9:43 AM PDT | Flash Flood Watch | SGX | Riverside, San Diego | 9 hr |
| Jul 15, 10:14 AM PDT | Flash Flood Watch | VEF | San Bernardino | 11 hr |
| Jul 29, 9:00 PM PDT | Flash Flood Watch | VEF | San Bernardino | 25 hr |
| Jul 30, 10:55 AM PDT | Flash Flood Watch | SGX | Riverside, San Diego | 9 hr |
| Jul 30, 12:25 PM PDT | Flash Flood Watch | PSR | 9 hr | |
| Jul 30, 7:45 PM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 23 hr |
| Jul 31, 2:29 AM PDT | Flash Flood Watch | VEF | San Bernardino | 19 hr |
| Jul 31, 3:42 AM PDT | Flash Flood Watch | PSR | 15 hr | |
| Aug 1, 2:44 AM PDT | Flash Flood Watch | VEF | San Bernardino | 20 hr |
| Aug 7, 9:31 AM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 9 hr |
| Aug 12, 9:18 AM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 12 hr |
| Aug 12, 9:33 AM PDT | Flash Flood Watch | LOX | 9 hr | |
| Aug 12, 9:48 AM PDT | Flash Flood Watch | HNX | 9 hr | |
| Aug 13, 3:23 AM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 16 hr |
| Aug 16, 7:07 PM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 25 hr |
| Aug 17, 2:58 AM PDT | Flash Flood Watch | HNX | 17 hr | |
| Aug 17, 3:26 AM PDT | Flash Flood Watch | LOX | 15 hr | |
| Aug 17, 11:23 AM PDT | Flash Flood Watch | VEF | San Bernardino | 8 hr |
| Aug 17, 8:26 PM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 20 hr |
| Aug 21, 9:07 AM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 11 hr |
| Aug 21, 11:39 AM PDT | Flash Flood Watch | VEF | Inyo, San Bernardino | 36 hr |
| Aug 22, 9:57 AM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 8 hr |
| Aug 30, 3:18 AM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 16 hr |
| Aug 31, 11:11 AM PDT | Flash Flood Watch | VEF | San Bernardino | 23 hr |
| Sep 9, 3:32 AM PDT | Flash Flood Watch | LOX | 17 hr | |
| Sep 9, 2:26 PM PDT | Flash Flood Watch | VEF | Inyo, San Bernardino | 55 hr |
| Sep 9, 2:51 PM PDT | Flash Flood Watch | HNX | 28 hr | |
| Sep 9, 7:01 PM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 23 hr |
| Sep 10, 3:23 AM PDT | Flash Flood Watch | LOX | 16 hr | |
| Sep 11, 3:42 AM PDT | Flash Flood Watch | PSR | 11 hr | |
| Nov 29, 11:22 AM PST | Flash Flood Watch | MTR | Marin, Monterey, Napa, City and County of San Francisco, San Mateo, Santa Clara and 2 more | 3 days |
| Dec 23, 9:31 AM PST | Flash Flood Watch | MTR | Marin, Napa, Sonoma | 5 hr |
| Dec 23, 3:12 PM PST | Flash Flood Watch | MTR | Santa Cruz | 4 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 nowTornadoes on recordThe radar archive20112013
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.