Napa reels from $1 BILLION in damage caused by the largest California earthquake in 25 years: Experts warn Bay Area risks DOZENS of powerful aftershocks for another week The 6.0 magnitude earthquake hit Northern California about six miles southwest of Napa around 3:30am Sunday morning  It was the largest earthquake to hit … Continue reading Napa reels from $1 BILLION in damage caused by the largest California earthquake in 25 years: PHOTO GALLERY