Napa was hit by three aftershocks Tuesday, two days after the northern California wine region was hit by a magnitude 6.0 earthquake that caused significant damage and a number of injuries.
USA Today reported the first and largest of the three aftershocks, a magnitude-3.9 quake, occurred 7 miles south of Napa just after 5:30 a.m. Pacific time. A magnitude-2.7 quake followed two minutes later roughly a half-mile away, and a magnitude-2.8 roughly 40 minutes later at the same location.
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In total, the area has experienced five earthquakes with a magnitude-3.0 or greater in the past 10 days,
according to The Los Angeles Times. There have been 65 aftershocks in Napa County since Sunday's big tremor, now dubbed the "South Napa earthquake" by the U.S. Geological Survey.
Sunday's earthquake was the largest in the Bay Area since 1989's magnitude-6.9 in Loma Prieta.
According to The Associated Press, 150 homes and buildings in the city of Napa have been deemed unsafe to occupy by local officials.
"It's devastating. I've never seen anything like this," Tom Montgomery, a winemaker for B.R. Cohn Winery told the AP. He fears he may have lost 50 percent or more of his wine reserves. "It's not just good wine we lost, it's our best wine," he said.
Two days after the big quake, experts have estimated that the region experienced roughly $1 billion in damages.
California's senior senator, Democrat Dianne Feinstein, joined a chorus of people calling for the building of an early warning system. Such a system would cost roughly $80 million and could send an alert about larger earthquakes before they reach the earth's surface, buying people up to 40 seconds of warning in some cases.
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