Thousands of residents in Southern California were forced to evacuate after authorities warned that a damaged chemical storage tank at an aerospace facility in Garden Grove could rupture or explode. Officials said the tank contained between 6,000 and 7,000 gallons of methyl methacrylate, a highly flammable chemical used in plastics manufacturing.
Emergency crews spent days spraying water on the overheating tank while monitoring pressure levels and air quality around the site. More than 40,000 residents across several Orange County communities were placed under evacuation orders as officials feared a possible large-scale explosion or toxic leak.
Authorities later announced that the immediate risk of a catastrophic explosion had been reduced after a crack formed in the tank, helping relieve internal pressure and cool the chemical inside. Despite the improvement, evacuation orders remained in place while crews continued safety inspections and containment efforts.
California Governor Gavin Newsom declared a state of emergency during the incident as officials worked to prevent environmental contamination and protect nearby residents.
