Photo by AP Wideworld

Early damage estimates top $1 billion from a magnitude-6.0 quake that struck Napa, Calif., on Aug. 24. Nearly 100 residential and commercial buildings have been condemned in Napa County due to structural damage, mostly to unreinforced masonry buildings. However, engineers are investigating why some recently reinforced buildings also sustained damage.

Emergency rooms treated more than 200 patients, mostly for minor injuries, but there were no fatalities. Around 90 broken water mains are being repaired, and some roadways buckled, but all of the area's bridges remain safe, according to Caltrans. Dozens of minor aftershocks continue to rock Napa's famed wine country.