County of Marin - News Releases - Red Flag Warning

For Immediate Release
July 18, 2021

Red Flag Warning in Effect for Marin County

Marin County, CA -- The National Weather Service issued a Red Flag Warning on Sunday, July 18, for large portions of California including the North Bay Mountains in Marin County for predicted lighting. Thunderstorms were expected to develop over the Bay Area region and last into the afternoon of Monday, July 19.

A Red Flag Warning means that critical fire weather conditions are expected during this time frame.

Not all locations will see thunderstorms, but lightning strikes could to new fire starts given the drought conditions and dry fuels.

For any land use restrictions or closures, contact the appropriate land management agency:

  • The National Park Service Point Reyes National Seashore is 415-464-5100
  • The Mount Tamalpais State Park information number is 415-388-2070.
  • The Marin Municipal Water District information number is 415-945-1195.
  • The Marin County Fire Information Hotline number is 415-473-7191.

Residents are advised to exercise extreme caution during the Red Flag Warning because a simple spark could cause a major wildfire, including the use of equipment and machinery as well as smoking.

Defensible space is essential to improve your home’s chance of surviving a wildfire. 

To register for emergency alerts, visit To learn more about preparing for wildfire, visit


Jason Weber
Marin County Fire Department

33 Castle Rock Ave.
Woodacre, CA 94973
(415) 473-6717
Email: Jason Weber
Marin County Fire website