Wednesday, July 22, 2015

Earthquake warning East Bay, Hayward fault

The Daily Journal/Bay City News/Sara Gaiser, 7/22/15."Warning: Hayward fault expected to have larger quake 'any day now'".

"The fault that produced a 4.0-magnitude earthquake in Fremont early Tuesday morning is expected to produce a major earthquake “any day now” and Bay Area residents should be prepared, a U.S. Geological Survey scientist said. The 2:41 a.m. earthquake on the border of Fremont and Union City occurred on the Hayward Fault at a depth of 5 miles. The epicenter was at a spot just north of the intersection of Niles Canyon Road and Mission Boulevard.

....  While damage from the quake was minimal, scientists warn that a much larger one is expected on the Hayward Fault, which extends from San Pablo Bay in the north to Fremont in the south and passes through heavily populated areas including Berkeley, Oakland, Hayward and Fremont.
The last big earthquake on the fault, estimated to have a 6.8-magnitude, occurred in 1868, according to the USGS."  Read more.

Reference -  UC Berkeley/Seismological Laboratory, article and graphic. "The Hayward fault runs through the East Bay hills from San Jose through Richmond." 

Posted by Kathy Meeh

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