What to KnowEvacuation orders remain in effect for about 50,000 people as firefighters worked to reduce the risk of a toxic chemical tank explosion at a Garden Grove aerospace facility.Some evacuation shelters were at capacity after authorities warned people of a possible toxic chemical spill or explosion of the overheating chemical tank at GKN Aerospace. Several schools in the area will be closed until further notice as firefighters work to cool the overheating tank containing thousands of gallons of a flammable liquid called methyl methacrylate.Authorities released a map detailing the possible blast zone, including potential damage impacts and toxic chemical dispersal. The zone nearest the site will likely see severe damage.

Evacuation orders remain in effect for about 50,000 people as firefighters work to lessen the risk of a toxic chemical tank explosion at a Garden Grove aerospace facility. See below for live updates.