Officials in Orange County say a major shift in conditions at a Garden Grove chemical facility has significantly reduced the immediate risk of a catastrophic explosion.

In a joint statement from the city of Westminster and the Westminster Police Department, experts described the situation as “critically positive.”

The update comes after emergency crews reported a pressurized chemical tank developed a structural issue, prompting fears earlier in the week that it could explode.

But authorities now say the situation has improved after a key change inside the container.

“OCFA has reported the tank has cracked and released some pressure, taking away the potential of a catastrophic explosion.

“There is no leak of chemical substance. This is a new positive development and the science experts are still evaluating this,” according to the city and police officials.

“We do not know when the community will be returned to normal or when evacuations will be lifted, but we will report an update as soon as it is available. Safety is the number one priority for all of us. Thank you for your patience and understanding.”

The incident remains under active monitoring by the Orange County Fire Authority (OCFA) and environmental safety specialists.

Officials say air quality sensors placed around the site have not detected any toxic releases, despite the structural change in the tank.

“Crack discovered at top of tank; releasing pressure – NOT chemicals,” the latest update said, emphasizing that the relief in pressure appears to have reduced the most dangerous risk scenario.

Air monitoring equipment at the site and in surrounding neighborhoods has so far shown no hazardous readings.

Despite the improvement, evacuation orders have not been lifted and no changes have been made to the affected zones. Authorities say the precaution remains in place while engineers and hazardous materials teams continue to assess whether the tank is fully stable.

A temporary care center has been opened at the Westminster Senior Center in nearby Westminster to support displaced residents during the ongoing emergency.

For now, emergency managers stress that while the most severe explosion risk appears to have eased, the situation is still considered active and under close watch across Garden Grove and surrounding parts of Orange County.

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