A damaged barrel sits outside at Bouchaine Vineyards in downtown Napa, California after an earthquake struck the area. California's governor Jerry Brown declared a state of emergency Sunday following a strong 6.0-magnitude earthquake that seriously injured three people including a child and ignited fires in the scenic Napa valley wine region. The US Geological Service said that the quake was the most powerful to hit the San Francisco Bay area since the 1989 6.9-magnitude Loma Prieta earthquake. AFP PHOTO/JOSH EDELSON         (Photo credit should read Josh Edelson/AFP/Getty Images)