DANVILLE ― The East Bay has been rattled by numerous small earthquakes from Friday through Sunday, according to the U.S. Geological Survey.

The most recent jolt occurred at 12:25 a.m. on Sunday with a magnitude of 1.9.

It was the second quake felt within an hour by Contra Costa County residents; a magnitude 1.5 quake struck about 11:50 p.m. on Saturday.

The USGS reported that epicenters of both quakes were at least 4 miles deep and about 5 miles west of Danville and a few miles south of Alamo.

There were two other quakes occuring earlier Saturday in the same area, scientists said.

A magnitude-2.5 temblor occurred at 3:25 p.m. and was centered 3 miles southwest of Alamo and 5 miles west of Danville, and an earthquake with a magnitude of 2.2 struck at 6:58 a.m.

The Saturday morning quake had a depth of 4.3 miles and was centered 5 miles west of Danville and 9 miles east of Oakland.

In addition, there were three jolts felt by residents near Danville on Friday, with magnitudes of 1.7, 3.0 and 3.5.