Two nighttime quakes shake Santa Clara County

SAN JOSE — A pair of earthquakes rattled the South Bay Tuesday night, in an area notorious for seismic restlessness, according to the U.S. Geological Survey.
A 3.9 magnitude quake, the stronger of the two temblors, struck at 10:32 p.m. about 5 miles east-northeast of Alum Rock at a depth of about 5.5 miles, the USGS reported.
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An earlier quake — a 3.1 — hit at 7:19 p.m. about 5.6