CROCKETT, Calif. (CBS SF ) — The U.S. Geological Survey says a magnitude 2.7 earthquake has struck in the north East Bay.

The quake struck at 11:32 a.m. PST Tuesday 1 mile southeast of Crockett near several refineries between the Concord and North Hayward Faults.

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The Concord Fault is causing concern among Bay Area planners who worry that its 11-mile fracture zone is capable of producing a catastrophic earthquake that would impact regional and statewide fuel distribution.

A December study by the Association of Bay Area Governments found aside from the San Andreas and Hayward faults, all but two of the five Bay Area refineries, which are responsible for 40 percent of the state’s total barrels of crude in 2012, are within a couple miles of the Concord Fault.

There are no immediate reports of damage.

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COMPLETE QUAKE COVERAGE: CBS Earthquake Resource Center

This article will be updated as information warrants, and follow KPIX 5 on Twitter at @CBSSF or KCBS Radio on Twitter at @KCBSNews for updates on breaking news anytime.

DID YOU FEEL IT?: USGS Shake Map For Northern California
LIVE QUAKE MAP: Track Real-Time Hot Spots
BAY AREA FAULTS: Interactive Map Of Local Faults

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Strong earthquakes with an epicenter off the coast can trigger tsunamis, depending on the size and type of the fault movement. The Pacific Tsunami Warning Center tracks earthquake data for the West Coast.
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