Alert archive / California / Red Flag Warnings / 2009
Red Flag Warnings in California, September 2009
24 red flag warnings in September 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 September 2009. Tap one for its archive.
- Red Flag Warnings
- 24
- Busiest day
- September 21, 20094 red flag 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 |
|---|---|---|---|---|
| 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 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Siskiyou County5
- Modoc County4
- San Bernardino County4
- Sierra County3
- El Dorado County2
- Lassen County2
- Nevada County2
- Placer County2
- Plumas County2
- Los Angeles County2
- Orange County2
- Riverside County2
- San Diego County2
- Marin County1
- Monterey County1
- Napa County1
- San Mateo County1
- Santa Clara County1
- Santa Cruz County1
- Sonoma County1
- Inyo County1
- Tulare County1
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.