Second small quake rolls through South Bay

A second small earthquake was reported in Santa Clara County Tuesday evening, according to the U.S. Geological Survey.

At about 10:30 p.m., a preliminary magnitude 3.8 earthquake struck about 5 miles from San Jose’s Alum Rock neighborhood.

Earlier this evening, a preliminary magnitude 3.1 earthquake was reported around 7:20 p.m. That earthquake struck about 5.6 miles from San Martin and 7.5 miles from Morgan Hill, USGS officials said.