Alert archive / California / Red Flag Warnings / 2026
Red Flag Warnings in California, June 2026
14 red flag warnings in June 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 June 2026. Tap one for its archive.
- Red Flag Warnings
- 14
- Busiest day
- June 18, 20263 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 |
|---|---|---|---|---|
| Jun 5, 9:29 AM PDT | Red Flag Warning | REV | Lassen | 37 hr |
| Jun 5, 11:02 AM PDT | Red Flag Warning | PSR | Imperial, Riverside | 36 hr |
| Jun 8, 9:18 AM PDT | Red Flag Warning | STO | Butte, Colusa, Glenn, Nevada, Placer, Shasta and 5 more | 3 days |
| Jun 9, 9:38 AM PDT | Red Flag Warning | MTR | Alameda, Contra Costa, Napa, Sonoma | 47 hr |
| Jun 9, 9:44 AM PDT | Red Flag Warning | EKA | Lake | 55 hr |
| Jun 18, 11:55 AM PDT | Red Flag Warning | EKA | Humboldt, Siskiyou, Trinity | 31 hr |
| Jun 18, 12:51 PM PDT | Red Flag Warning | MFR | Modoc, Siskiyou | 33 hr |
| Jun 18, 1:49 PM PDT | Red Flag Warning | REV | Lassen, Modoc | 33 hr |
| Jun 18, 7:56 PM PDT | Red Flag Warning | STO | Shasta | 23 hr |
| Jun 23, 9:13 AM PDT | Red Flag Warning | VEF | San Bernardino | 26 hr |
| Jun 23, 10:28 AM PDT | Red Flag Warning | SGX | San Bernardino | 25 hr |
| Jun 25, 12:54 AM PDT | Red Flag Warning | VEF | Inyo, San Bernardino | 4 days |
| Jun 25, 1:07 AM PDT | Red Flag Warning | PSR | Imperial, Riverside | 4 days |
| Jun 25, 11:12 AM PDT | Red Flag Warning | HNX | Kern, Tulare | 60 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- San Bernardino County3
- Lassen County2
- Imperial County2
- Riverside County2
- Shasta County2
- Siskiyou County2
- Modoc County2
- Butte County1
- Colusa County1
- Glenn County1
- Nevada County1
- Placer County1
- Solano County1
- Sutter County1
- Tehama County1
- Yolo County1
- Yuba County1
- Alameda County1
- Contra Costa County1
- Napa County1
- Sonoma County1
- Lake County1
- Humboldt County1
- Trinity County1
- Inyo County1
- Kern County1
- Tulare County1
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.