Alert archive / California / Red Flag Warnings
Red Flag Warnings in California, 2009
60 red flag warnings in 2009. 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 red flag warnings reaches back to 2005.
Red Flag Warnings by county
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Red Flag Warnings
- 60
- Busiest month
- September24 red flag warnings
- Busiest day
- September 21, 20094 red flag 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 |
|---|---|---|---|---|
| Jan 8, 3:17 PM PST | Red Flag Warning | LOX | Los Angeles | 9 days |
| Mar 25, 2:00 PM PDT | Red Flag Warning | PSR | Imperial, Riverside | 33 hr |
| Mar 28, 3:26 PM PDT | Red Flag Warning | PSR | Imperial, Riverside | 29 hr |
| Mar 29, 2:23 PM PDT | Red Flag Warning | PSR | Imperial, Riverside | 25 hr |
| Apr 2, 2:55 PM PDT | Red Flag Warning | PSR | Imperial, Riverside | 31 hr |
| Apr 6, 3:48 AM PDT | Red Flag Warning | HNX | 14 hr | |
| Apr 6, 6:18 PM PDT | Red Flag Warning | HNX | 3 hr | |
| Apr 14, 5:10 AM PDT | Red Flag Warning | PSR | Imperial, Riverside | 15 hr |
| Apr 22, 12:52 PM PDT | Red Flag Warning | VEF | San Bernardino | 3 days |
| Apr 24, 1:51 PM PDT | Red Flag Warning | PSR | Imperial, Riverside | 15 hr |
| May 6, 3:00 PM PDT | Red Flag Warning | LOX | 61 hr | |
| May 12, 9:30 AM PDT | Red Flag Warning | LOX | 50 hr | |
| Jul 6, 10:37 AM PDT | Red Flag Warning | REV | El Dorado, Lassen, Nevada, Placer, Plumas, Sierra | 35 hr |
| Jul 11, 12:50 PM PDT | Red Flag Warning | MFR | Siskiyou | 30 hr |
| Aug 4, 6:34 AM PDT | Red Flag Warning | REV | Lassen | 38 hr |
| Aug 4, 2:37 PM PDT | Red Flag Warning | VEF | Inyo, San Bernardino, Tulare | 54 hr |
| Aug 5, 3:38 PM PDT | Red Flag Warning | STO | 22 hr | |
| Aug 6, 8:51 AM PDT | Red Flag Warning | SGX | Riverside, San Bernardino | 12 hr |
| Aug 14, 3:19 AM PDT | Red Flag Warning | REV | 17 hr | |
| Aug 25, 3:48 PM PDT | Red Flag Warning | LOX | 6 days | |
| Aug 26, 8:44 AM PDT | Red Flag Warning | HNX | 60 hr | |
| Aug 27, 4:01 AM PDT | Red Flag Warning | MTR | Monterey, San Benito | 32 hr |
| Aug 29, 9:41 AM PDT | Red Flag Warning | REV | El Dorado, Nevada, Placer, Sierra | 36 hr |
| Sep 2, 4:12 AM PDT | Red Flag Warning | MFR | Siskiyou | 16 hr |
| Sep 4, 8:43 AM PDT | Red Flag Warning | REV | El Dorado, Lassen, Modoc, Nevada, Placer, Plumas and 1 more | 35 hr |
| Sep 4, 2:42 PM PDT | Red Flag Warning | MFR | Modoc, Siskiyou | 29 hr |
| Sep 11, 2:25 PM PDT | Red Flag Warning | MTR | Marin, Monterey, Napa, San Mateo, Santa Clara, Santa Cruz and 1 more | 25 hr |
| Sep 12, 3:11 AM PDT | Red Flag Warning | STO | 17 hr | |
| Sep 12, 3:55 AM PDT | Red Flag Warning | EKA | 19 hr | |
| Sep 12, 3:55 AM PDT | Red Flag Warning | MFR | Siskiyou | 19 hr |
| Sep 19, 1:00 PM PDT | Red Flag Warning | MTR | 3 days | |
| Sep 19, 2:48 PM PDT | Red Flag Warning | STO | 3 days | |
| Sep 20, 5:38 AM PDT | Red Flag Warning | MFR | Siskiyou | 55 hr |
| Sep 20, 2:49 PM PDT | Red Flag Warning | LOX | Los Angeles | 7 days |
| Sep 21, 2:49 AM PDT | Red Flag Warning | VEF | San Bernardino | 33 hr |
| Sep 21, 9:47 AM PDT | Red Flag Warning | EKA | 29 hr | |
| Sep 21, 9:49 AM PDT | Red Flag Warning | HNX | 6 days | |
| Sep 21, 1:36 PM PDT | Red Flag Warning | SGX | Orange, Riverside, San Bernardino, San Diego | 3 days |
| Sep 27, 2:34 PM PDT | Red Flag Warning | MFR | Modoc, Siskiyou | 28 hr |
| Sep 27, 2:34 PM PDT | Red Flag Warning | REV | Lassen, Modoc, Plumas, Sierra | 53 hr |
| Sep 27, 3:16 PM PDT | Red Flag Warning | STO | 31 hr | |
| Sep 28, 11:47 AM PDT | Red Flag Warning | REV | El Dorado, Nevada, Placer, Sierra | 32 hr |
| Sep 28, 3:16 PM PDT | Red Flag Warning | VEF | Inyo, San Bernardino, Tulare | 31 hr |
| Sep 29, 2:16 PM PDT | Red Flag Warning | STO | 52 hr | |
| Sep 30, 10:03 AM PDT | Red Flag Warning | LOX | Los Angeles | 56 hr |
| Sep 30, 12:19 PM PDT | Red Flag Warning | MTR | 30 hr | |
| Sep 30, 1:29 PM PDT | Red Flag Warning | SGX | Orange, Riverside, San Bernardino, San Diego | 29 hr |
| Sep 30, 5:17 PM PDT | Red Flag Warning | VEF | San Bernardino | 23 hr |
| Oct 2, 9:51 AM PDT | Red Flag Warning | REV | El Dorado, Nevada, Placer, Sierra | 37 hr |
| Oct 25, 12:28 PM PDT | Red Flag Warning | VEF | San Bernardino | 8 hr |
| Oct 25, 1:25 PM PDT | Red Flag Warning | PSR | Imperial, Riverside | 6 hr |
| Oct 26, 2:15 PM PDT | Red Flag Warning | PSR | Imperial, Riverside, San Bernardino | 30 hr |
| Oct 26, 3:19 PM PDT | Red Flag Warning | VEF | Inyo, San Bernardino | 23 hr |
| Oct 27, 9:56 AM PDT | Red Flag Warning | SGX | Orange, Riverside, San Bernardino, San Diego | 30 hr |
| Oct 27, 1:41 PM PDT | Red Flag Warning | LOX | Los Angeles | 25 hr |
| Oct 27, 1:51 PM PDT | Red Flag Warning | PSR | Imperial, Riverside | 27 hr |
| Nov 14, 1:36 PM PST | Red Flag Warning | SGX | Orange, Riverside, San Bernardino, San Diego | 26 hr |
| Nov 15, 5:40 AM PST | Red Flag Warning | PSR | Imperial, Riverside | 6 hr |
| Nov 24, 10:01 AM PST | Red Flag Warning | SGX | Orange, Riverside, San Diego | 48 hr |
| Dec 3, 3:45 PM PST | Red Flag Warning | VEF | San Bernardino | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Riverside County16
- San Bernardino County14
- Imperial County10
- Sierra County6
- Siskiyou County6
- El Dorado County5
- Nevada County5
- Placer County5
- Orange County5
- San Diego County5
- Los Angeles County4
- Lassen County4
- Modoc County4
- Plumas County3
- Inyo County3
- Tulare County2
- Monterey County2
- San Benito County1
- Marin County1
- Napa County1
- San Mateo County1
- Santa Clara County1
- Santa Cruz County1
- Sonoma County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.