Overview
- The blaze was first reported by aircraft on Friday, May 15, and has since scorched roughly 16,000–17,500 acres, making it the largest active wildfire in California this year and consuming about one-third of Santa Rosa Island.
- Containment has risen from near zero to the mid‑20 percent range as additional crews, Chumash firefighters, type‑6 wildland engines, unmanned aircraft and large airtankers and water‑scooping planes have been deployed to the island.
- Officials have classified the incident as human‑caused and are investigating whether a 67‑year‑old mariner’s distress flares or embers from his burning, wrecked vessel ignited the dry brush, with the U.S. Coast Guard initially raising the flare possibility before clarifying the cause remains under review and privately circulated video showing the burning boat prompting further scrutiny.
- The fire moved through the island’s critically endangered Torrey pine stand but initial on‑site checks reported low fire intensity and that the stand appears intact pending a full damage assessment, while several uninhabited historic structures have been confirmed destroyed.
- Separate mainland Southern California blazes have forced evacuations, caused injuries and produced widespread smoke that prompted air‑quality alerts for millions, a pattern experts link to record spring heat and a Sierra Nevada snowpack far below normal that is priming an early, active fire season.