The US Geological Survey says the quake's epicenter was 2 miles from Berkeley.
Gravity signals may play a crucial role in early identification of the occurrence of earthquakes. (Photo: PTI/ File)
San Francisco: A preliminary magnitude 4.5 earthquake shook San Francisco Bay Area residents out of their slumber early Thursday.
The US Geological Survey says the quake’s epicenter was 2 miles (3 kilometers) from Berkeley, California. The earthquake had a preliminary depth of 8 miles (13 kilometers).
No damage or injuries was immediately recorded.
The USGS website says people reported feeling the quake 40 miles (64 kilometers) south in San Jose.
( Source : AP )
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