Strong earthquake aftershock shakes Napa Valley
A significant aftershock from last weekend’s magnitude-6.0 earthquake has rattled Northern California’s wine country. The U.S. Geological Survey says the magnitude-3.2 tremor struck 5 miles south of the city of Napa just before 2 a.m. Sunday. Thomas Brocher, director of USGS’ Earthquake Science Center, says it wasn’t the strongest aftershock to rumble the region since
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