(AP) - A cluster of small earthquakes rattled cities east of San Francisco Wednesday morning.
The largest was a magnitude 2.9 that occurred just before 4 a.m. Wednesday. Five of the quakes were a magnitude 2.0 or greater.
The United States Geological Survey reports there have been at least 20 tremors since Tuesday morning.
The quakes were felt in San Ramon and nearby Danville as well as other parts of the East Bay.