Alert archive / California / Red Flag Warnings
Red Flag Warnings in California, 2018
105 red flag warnings in 2018. 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 2018. Tap one for its archive.
- Red Flag Warnings
- 105
- Busiest month
- August21 red flag warnings
- Busiest day
- October 13, 20185 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 26, 2:17 PM PST | Red Flag Warning | SGX | Orange, Riverside, San Bernardino, San Diego | 3 days |
| Jan 26, 2:25 PM PST | Red Flag Warning | LOX | Los Angeles | 3 days |
| Feb 6, 2:45 PM PST | Red Flag Warning | LOX | Los Angeles | 27 hr |
| Feb 9, 10:00 AM PST | Red Flag Warning | LOX | Los Angeles | 56 hr |
| Feb 9, 10:21 AM PST | Red Flag Warning | SGX | Orange, Riverside, San Bernardino, San Diego | 51 hr |
| Apr 10, 8:09 AM PDT | Red Flag Warning | PSR | Imperial, Riverside, San Bernardino | 61 hr |
| Apr 10, 3:06 PM PDT | Red Flag Warning | VEF | San Bernardino | 3 days |
| Apr 15, 3:44 AM PDT | Red Flag Warning | VEF | San Bernardino | 42 hr |
| May 9, 2:39 PM PDT | Red Flag Warning | VEF | Inyo, Tulare | 56 hr |
| May 9, 2:58 PM PDT | Red Flag Warning | REV | 52 hr | |
| May 10, 3:20 AM PDT | Red Flag Warning | PSR | Imperial, Riverside | 41 hr |
| May 29, 2:07 PM PDT | Red Flag Warning | VEF | San Bernardino | 53 hr |
| Jun 8, 2:40 PM PDT | Red Flag Warning | LOX | 67 hr | |
| Jun 21, 12:18 PM PDT | Red Flag Warning | STO | 3 days | |
| Jun 22, 7:45 AM PDT | Red Flag Warning | MTR | 60 hr | |
| Jun 24, 10:39 AM PDT | Red Flag Warning | REV | Lassen | 35 hr |
| Jun 26, 3:19 AM PDT | Red Flag Warning | REV | Lassen | 43 hr |
| Jun 28, 10:05 AM PDT | Red Flag Warning | STO | 3 days | |
| Jun 28, 10:07 AM PDT | Red Flag Warning | MTR | 3 days | |
| Jun 28, 12:36 PM PDT | Red Flag Warning | EKA | 58 hr | |
| Jul 3, 9:58 AM PDT | Red Flag Warning | VEF | Inyo, Tulare | 34 hr |
| Jul 3, 12:29 PM PDT | Red Flag Warning | MFR | Siskiyou | 32 hr |
| Jul 4, 2:24 PM PDT | Red Flag Warning | MFR | Modoc, Siskiyou | 30 hr |
| Jul 5, 9:12 AM PDT | Red Flag Warning | REV | Lassen, Modoc | 12 hr |
| Jul 5, 9:50 AM PDT | Red Flag Warning | LOX | Los Angeles | 56 hr |
| Jul 5, 9:38 PM PDT | Red Flag Warning | MFR | Modoc, Siskiyou | 22 hr |
| Jul 6, 2:59 AM PDT | Red Flag Warning | HNX | 41 hr | |
| Jul 6, 1:52 PM PDT | Red Flag Warning | REV | Modoc | 31 hr |
| Jul 6, 10:01 PM PDT | Red Flag Warning | MFR | Modoc | 23 hr |
| Jul 7, 1:19 PM PDT | Red Flag Warning | REV | Lassen, Modoc | 32 hr |
| Jul 7, 2:25 PM PDT | Red Flag Warning | MFR | Modoc | 31 hr |
| Jul 9, 1:32 AM PDT | Red Flag Warning | MFR | Modoc | 19 hr |
| Jul 11, 4:52 AM PDT | Red Flag Warning | REV | 16 hr | |
| Jul 14, 2:27 PM PDT | Red Flag Warning | MFR | Modoc, Siskiyou | 29 hr |
| Jul 14, 3:21 PM PDT | Red Flag Warning | EKA | 32 hr | |
| Jul 21, 2:46 PM PDT | Red Flag Warning | MFR | Modoc, Siskiyou | 32 hr |
| Jul 23, 9:41 AM PDT | Red Flag Warning | LOX | 3 days | |
| Jul 26, 9:47 PM PDT | Red Flag Warning | STO | 3 days | |
| Jul 31, 1:45 PM PDT | Red Flag Warning | MFR | Modoc | 33 hr |
| Aug 1, 4:26 AM PDT | Red Flag Warning | REV | Lassen | 17 hr |
| Aug 1, 1:07 PM PDT | Red Flag Warning | REV | Lassen, Modoc | 32 hr |
| Aug 2, 3:52 AM PDT | Red Flag Warning | MFR | Modoc | 16 hr |
| Aug 2, 10:57 AM PDT | Red Flag Warning | STO | 60 hr | |
| Aug 2, 11:00 AM PDT | Red Flag Warning | REV | El Dorado, Lassen, Modoc, Nevada, Placer, Plumas and 1 more | 59 hr |
| Aug 2, 2:49 PM PDT | Red Flag Warning | MFR | Modoc | 29 hr |
| Aug 3, 9:48 AM PDT | Red Flag Warning | EKA | 37 hr | |
| Aug 4, 12:00 PM PDT | Red Flag Warning | MFR | Modoc, Siskiyou | 8 hr |
| Aug 5, 9:38 AM PDT | Red Flag Warning | LOX | Los Angeles | 4 days |
| Aug 8, 1:22 PM PDT | Red Flag Warning | STO | 3 days | |
| Aug 8, 3:21 PM PDT | Red Flag Warning | MFR | Modoc, Siskiyou | 30 hr |
| Aug 9, 9:27 AM PDT | Red Flag Warning | EKA | 62 hr | |
| Aug 9, 9:04 PM PDT | Red Flag Warning | MFR | Modoc, Siskiyou | 24 hr |
| Aug 10, 9:31 AM PDT | Red Flag Warning | REV | Lassen, Modoc, Plumas, Sierra | 35 hr |
| Aug 10, 3:08 PM PDT | Red Flag Warning | MFR | Modoc | 29 hr |
| Aug 12, 5:21 AM PDT | Red Flag Warning | REV | 13 hr | |
| Aug 13, 11:40 PM PDT | Red Flag Warning | MFR | Modoc, Siskiyou | 47 hr |
| Aug 18, 1:35 PM PDT | Red Flag Warning | MFR | Modoc | 32 hr |
| Aug 20, 10:18 PM PDT | Red Flag Warning | MFR | Modoc | 21 hr |
| Aug 22, 1:19 PM PDT | Red Flag Warning | MFR | Modoc | 31 hr |
| Aug 25, 2:39 PM PDT | Red Flag Warning | REV | Lassen, Modoc | 31 hr |
| Sep 1, 1:03 PM PDT | Red Flag Warning | EKA | 16 hr | |
| Sep 2, 4:44 AM PDT | Red Flag Warning | EKA | 30 hr | |
| Sep 10, 10:22 AM PDT | Red Flag Warning | STO | 61 hr | |
| Sep 10, 11:10 AM PDT | Red Flag Warning | REV | El Dorado, Lassen, Modoc, Nevada, Placer, Plumas and 1 more | 66 hr |
| Sep 11, 4:02 AM PDT | Red Flag Warning | EKA | 21 hr | |
| Sep 11, 2:27 PM PDT | Red Flag Warning | VEF | Inyo, Tulare | 4 days |
| Sep 19, 11:15 AM PDT | Red Flag Warning | STO | 32 hr | |
| Sep 19, 11:37 AM PDT | Red Flag Warning | MTR | San Mateo, Santa Clara, Santa Cruz | 29 hr |
| Sep 23, 9:49 AM PDT | Red Flag Warning | MFR | Siskiyou | 49 hr |
| Sep 23, 10:43 AM PDT | Red Flag Warning | EKA | 23 hr | |
| Sep 23, 12:41 PM PDT | Red Flag Warning | STO | 52 hr | |
| Sep 24, 3:21 AM PDT | Red Flag Warning | MTR | 38 hr | |
| Sep 25, 1:07 AM PDT | Red Flag Warning | EKA | 18 hr | |
| Sep 28, 5:10 AM PDT | Red Flag Warning | REV | El Dorado, Nevada, Placer, Sierra | 39 hr |
| Oct 6, 10:25 AM PDT | Red Flag Warning | MTR | Alameda, Contra Costa, San Mateo, Santa Clara, Santa Cruz | 55 hr |
| Oct 6, 1:30 PM PDT | Red Flag Warning | STO | 52 hr | |
| Oct 12, 2:22 PM PDT | Red Flag Warning | MFR | Siskiyou | 4 days |
| Oct 13, 9:00 AM PDT | Red Flag Warning | MTR | 51 hr | |
| Oct 13, 9:12 AM PDT | Red Flag Warning | EKA | 50 hr | |
| Oct 13, 9:55 AM PDT | Red Flag Warning | STO | 3 days | |
| Oct 13, 1:44 PM PDT | Red Flag Warning | SGX | Orange, Riverside, San Bernardino, San Diego | 3 days |
| Oct 13, 3:18 PM PDT | Red Flag Warning | LOX | Los Angeles, Santa Barbara | 3 days |
| Oct 18, 9:28 AM PDT | Red Flag Warning | LOX | Los Angeles | 37 hr |
| Oct 18, 9:45 AM PDT | Red Flag Warning | SGX | Orange, Riverside, San Bernardino, San Diego | 36 hr |
| Oct 27, 11:11 AM PDT | Red Flag Warning | REV | El Dorado, Nevada, Placer, Sierra | 35 hr |
| Oct 29, 10:17 AM PDT | Red Flag Warning | MTR | 49 hr | |
| Oct 29, 10:30 AM PDT | Red Flag Warning | STO | 49 hr | |
| Oct 30, 9:33 AM PDT | Red Flag Warning | LOX | Los Angeles | 32 hr |
| Nov 2, 3:07 AM PDT | Red Flag Warning | MTR | 52 hr | |
| Nov 2, 3:30 AM PDT | Red Flag Warning | STO | 52 hr | |
| Nov 6, 9:26 AM PST | Red Flag Warning | MTR | San Mateo, Santa Clara, Santa Cruz | 70 hr |
| Nov 6, 10:16 AM PST | Red Flag Warning | STO | 69 hr | |
| Nov 7, 4:06 AM PST | Red Flag Warning | EKA | 42 hr | |
| Nov 7, 9:49 AM PST | Red Flag Warning | LOX | Los Angeles | 7 days |
| Nov 7, 9:52 AM PST | Red Flag Warning | SGX | Orange, Riverside, San Bernardino, San Diego | 60 hr |
| Nov 7, 12:23 PM PST | Red Flag Warning | HNX | 58 hr | |
| Nov 9, 12:00 PM PST | Red Flag Warning | MTR | San Mateo, Santa Clara, Santa Cruz | 52 hr |
| Nov 9, 12:46 PM PST | Red Flag Warning | EKA | 67 hr | |
| Nov 9, 2:03 PM PST | Red Flag Warning | MFR | Siskiyou | 47 hr |
| Nov 9, 2:26 PM PST | Red Flag Warning | STO | 65 hr | |
| Nov 10, 2:01 AM PST | Red Flag Warning | HNX | 53 hr | |
| Nov 10, 6:57 AM PST | Red Flag Warning | SGX | Orange, Riverside, San Bernardino, San Diego | 4 days |
| Nov 10, 1:53 PM PST | Red Flag Warning | PSR | Imperial, Riverside | 31 hr |
| Nov 10, 2:22 PM PST | Red Flag Warning | VEF | San Bernardino | 52 hr |
| Nov 16, 12:25 PM PST | Red Flag Warning | STO | 50 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Modoc County26
- Siskiyou County12
- San Bernardino County11
- Lassen County10
- Riverside County9
- Los Angeles County9
- Orange County6
- San Diego County6
- Sierra County5
- El Dorado County4
- Nevada County4
- Placer County4
- San Mateo County4
- Santa Clara County4
- Santa Cruz County4
- Imperial County3
- Inyo County3
- Tulare County3
- Plumas County3
- Alameda County1
- Contra Costa County1
- Santa Barbara County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.