Magnitude 3.9 earthquake jolts the East Bay

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4.0 earthquake rattles the East Bay, widespread shaking felt

A magnitude 4.0 earthquake rattled the East Bay on Monday. There were widespread reports of shaking but no reports of damage. KTVU Chief Meteorologist Bill Martin says the quake, with an epicenter near Castro Valley, was likely along the Hayward fault line.

A magnitude 3.9 earthquake rattled the Bay Area Monday evening. 

According to the United States Geological Survey, the temblor struck near San Lorenzo around 6:29 p.m. The earthquake was first reported as a magnitude 4.2 but downgraded to a 3.9.

There were no reports of danger or injuries. The shaker was felt in Oakland, Danville, Walnut Creek, and San Francisco.

KTVU's Chief Meteorologist Bill Martin says the earthquake was along the Hayward fault line at about five miles deep. 

BART trains recovered from a 20-minute systemwide delay as tracks were inspected. 

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KTVU anchors pause newscast during rattling and rolling at Jack London Square

KTVU anchors Mike Mibach and Julie Haener felt the jolt of the 3.9 earthquake that struck the Bay Area on Monday about 6:30 p.m. They stopped the regular newscast to discuss the rumbling. Reporter Greg Lee said his desk started to shake.