California Red Flag Warning | Effective 05/17/2026 04:00
* AFFECTED AREA...Fire weather zone 579 West Side Hills on the
Coastal Range. Fire weather zone 580 San Joaquin Valley.
* WIND...GUSTING TO 35 MPH SATURDAY AND SUNDAY.
* HUMIDITY...20% OR LESS SATURDAY AND SUNDAY THEN 15% OR LESS
MONDAY
* HIGHEST THREAT...FAST-MOVING GRASS FIRES
* IMPACTS...Any fires that develop will likely spread rapidly.
Outdoor burning is not recommended.
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of