Wildland fire consumes one-third of Santa Rosa Island

A wildland fire ignited on May 15, 2026, on the southeastern side of Santa Rosa Island, the second-largest of California’s Channel Islands National Park. The blaze spread over several days, ultimately consuming 18,379 acres (7,438 hectares), which represents approximately one-third of the island. The fire charred grassland, coastal sage scrub, and chaparral across the landscape.

NASA Earth Observatory imagery, utilising Landsat satellite data from the U.S. Geological Survey, captured the fire’s expansion between May 16 and May 24, 2026. The false-colour images distinguish burned areas in brown from healthy vegetation in green. NASA’s Fire Information for Resource Management System (FIRMS) and Fire Event Explorer tools tracked the fire’s movement to the north and east as it advanced.

Officials reported the fire was 97 per cent contained by the evening of May 26. Local reports suggest this event is the largest fire on record for any of California’s Channel Islands, although this claim has not been independently verified by the National Park Service or other official bodies in the provided source material.

The Channel Islands are known for their diversity of plant and animal species, including the rare Torrey pine. This tree grows naturally in the United States only on the northeastern coast of Santa Rosa Island and near San Diego. Initial post-fire surveys by firefighters and unmanned aircraft indicated that the Torrey pine stand remained largely intact, with the fire mostly burning at lower intensity through these areas and sparing the canopy.

Suppression crews also worked to protect cloud forests along the northwest edge of the fire by cooling fuels ahead of the fire’s front. According to the National Park Service, some chaparral and tree species on the islands are adapted to fire but are less dependent on it than mainland counterparts, as naturally occurring fire is less frequent on the Channel Islands.