A Third of Santa Rosa Island Scorched in Record Wildfire, NASA Images Reveal
New satellite images from NASA have laid bare the scale of destruction on Santa Rosa Island, where a wildfire has blackened more than 18,300 acres—roughly a third of the remote island that forms part of Channel Islands National Park. The Moderate Resolution Imaging Spectroradiometer (MODIS) captured false-color imagery on May 20, showing vast swaths of charred land across this rugged outpost off Southern California.
The fire, believed to be the largest ever recorded on the island, has raised alarm because Santa Rosa’s ecosystems evolved in near isolation from the mainland. Unlike much of California, these habitats are not fire-adapted, making such a massive blaze highly unusual. The cause remains under investigation, but flames were spotted after a 67-year-old sailor crashed his boat onto the island’s rocky shore and fired flares for help. Coast Guard images show he carved “SOS” into the scorched ground before being rescued by helicopter.
Fire crews faced extreme conditions—strong winds, thick coastal fog, and steep terrain that hampered aerial support and communications. Resource advisers, including restoration biologists and archaeologists, worked alongside firefighters to minimize damage from containment efforts, such as bulldozer trenches. Now, attention has turned to recovery. A Burned Area Emergency Response team will assess soil stability, hydrological shifts, and threats to cultural sites. “The post-fire landscape is fragile,” said National Park Service spokesperson Ana Cholo.
Santa Rosa is often called the “Galapagos of California” for its extraordinary biodiversity. It hosts 46 endemic species, including the island fox and deer mice that evolved into unique subspecies on each island. Seven federally listed plants cling to small, vulnerable habitats. The island’s rare Torrey pines—found only here and in a single stand in San Diego—suffered some damage but remain largely intact. “Santa Rosa is a sanctuary of rare species and ancient Chumash culture,” Cholo added, “and we recognize how meaningful it is to all who care about it.”