Alert archive / California / Red Flag Warnings / 2026
Red Flag Warnings in California, August 2026
15 red flag warnings in August 2026. 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 August 2026. Tap one for its archive.
- Red Flag Warnings
- 15
- Busiest day
- August 20, 20262 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 |
|---|---|---|---|---|
| Aug 3, 12:48 PM PDT | Red Flag Warning | MFR | Siskiyou | 56 hr |
| Aug 5, 12:31 PM PDT | Red Flag Warning | MFR | Siskiyou | 31 hr |
| Aug 12, 11:04 AM PDT | Red Flag Warning | STO | Alpine, Amador, Calaveras, El Dorado, Tuolumne | 30 hr |
| Aug 20, 9:28 AM PDT | Red Flag Warning | MFR | Siskiyou | 12 hr |
| Aug 20, 9:28 AM PDT | Red Flag Warning | MFR | Modoc, Siskiyou | 35 hr |
| Aug 21, 7:37 AM PDT | Red Flag Warning | REV | Lassen, Modoc | 39 hr |
| Aug 21, 9:30 AM PDT | Red Flag Warning | MFR | Modoc, Siskiyou | 36 hr |
| Aug 23, 11:59 AM PDT | Red Flag Warning | MFR | Siskiyou | 32 hr |
| Aug 24, 1:46 PM PDT | Red Flag Warning | LOX | Los Angeles, San Luis Obispo, Santa Barbara, Ventura | 4 days |
| Aug 25, 12:48 PM PDT | Red Flag Warning | MFR | Modoc | 31 hr |
| Aug 26, 10:12 AM PDT | Red Flag Warning | MFR | Modoc | 34 hr |
| Aug 27, 11:07 AM PDT | Red Flag Warning | MTR | Monterey, San Benito, San Mateo, Santa Clara, Santa Cruz | 28 hr |
| Aug 27, 1:33 PM PDT | Red Flag Warning | LOX | San Luis Obispo | 25 hr |
| Aug 30, 12:56 PM PDT | Red Flag Warning | MFR | Modoc, Siskiyou | 31 hr |
| Aug 31, 11:42 AM PDT | Red Flag Warning | REV | Lassen, Modoc | 35 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
Nearby
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.