Emergency crews raced overnight to prevent a tank holding a volatile industrial chemical from exploding at an aerospace facility in Southern California.

Southern California officials have expanded an evacuation zone in several Orange County cities over a toxic chemical tank that they say is "actively in crisis."

Authorities in Orange County say they’re unable to control the valves on a tank that contains methyl methacrylate, a chemical used in the manufacture of plexiglass.

Southern California officials have expanded evacuations in several Orange County cities due to concerns over a leaking toxic chemical tank that they say is "actively in crisis."

An official said there's no active leak, but evacuations orders are to prepare for either a spill or an explosion from a failing chemical tank.

'This thing is going to fail. We don't know when,' Orange County Fire Authority Division Chief Craig Covey warned during a tense emergency briefing Friday.

Thousands evacuated in Southern California as officials manage a failing chemical tank to prevent potential leaks or explosions.

Chemical tank leak in Garden Grove forces 40,000 evacuations as crews race to prevent a possible explosion at a Southern California aerospace plastics plant.

Around 40,000 people were ordered to evacuate parts of Southern California after a hazardous chemical leak at an aerospace manufacturing facility in Garden Grove triggered fears…

About 40,000 residents evacuated after a chemical tank failure at a Garden Grove aerospace facility triggered safety concerns.

Firefighters were able to reduce the tank’s temperature, buying crews more time to stabilise the situation.

Stay up to date with notifications from The IndependentNotifications can be managed in browser preferences.AllNewsSportCultureLifestyleWater is sprayed on a tank that overheated…

...employees saw that the tank was bulging, a sign it was still “actively in crisis... It can crack and leak, or it can blow up.”

A pressurized tank at a GKN Aerospace facility in Garden Grove poses explosion risks as firefighters work to cool the tank and lead evacuations.

Tens of thousands of residents are under evacuation in Orange County due to a tank containing roughly 7,000 gallons of a toxic industrial chemical.

Efforts are on to stabilize a damaged chemical tank at a facility in Southern California where tens of thousands of people have been ordered out of their homes.

California Governor Gavin Newsom declared a state of emergency for Orange County and his office pleaded for residents to follow evacuation orders.

Evacuation orders are in place for an area covering tens of thousands of people in a suburb of Los Angeles.

One California town is in a state of emergency and 50,000 people are under an evacuation order as a malfunctioning chemical tank at an aerospace plant is overheating and could…

Newsom said the state is 'mobilizing every resource available' after more than 40,000 residents were ordered to evacuate Orange County.

Authorities are bracing for the possibility that a damaged chemical tank at a facility in Southern California could leak or explode.