Officials were trying to determine Wednesday if a 4.5 magnitude earthquake triggered an explosion at a fuel storage facility in the San Francisco Bay Area that started a fire and trapped thousands in their homes for hours because of potentially unhealthy air. The earthquake struck about 15 miles southeast from the NuStar Energy fuel storage facility in the Bay Area community of Crockett 15 hours before the Tuesday fire that consumed thousands of gallons of fuel, the AP reports. Aftershocks in the same area were still being felt Wednesday, including one with a 3.4 magnitude. State and local inspectors were investigating the fire that shut down the facility, which, according to the company, has 24 tanks capable of holding more than 3 million barrels of different kinds of fuels.
The seven-hour blaze erupted in towering, stubborn flames Tuesday afternoon at the facility in Crockett, about 30 miles northeast of downtown San Francisco. A firefighter was injured and was treated at a hospital, said a Contra Costa Fire Department spokesman. A column of thick black smoke that could be seen for miles prompted Contra Costa County public health officials to order people in Crockett, neighboring Rodeo, and part of Hercules to stay inside with fans and air conditioners off and to seal their windows and doors with tape or wet towels. The concern was that hazardous particulates might be spewing from the fire. County health officials late Tuesday lifted a shelter in place order affecting about 12,000 people. But at least four schools in the area closed on Wednesday as a precaution.
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