Update: Mason Fire in San Francisco County – July 20 status

Published Jul 21, 2026 #Fort mason fire

Updated: 9:03 p.m. July 20

First discovered: More than a month ago, 12:46 a.m. June 14

Initial location: San Francisco County, Calif.

Fire type: Wildfire

Fire name: Mason

Mason Fire initially started 12:46 a.m. June 14 in San Francisco County, California.

It has been burning on federal land managed by the National Park Service for more than a month. At this time, there are no details on the containment or cause of the fire.

Source: National Interagency Fire Center