SAN RAMON (CBS SF) -- A 3.0-magnitude earthquake shook the San Ramon Valley Wednesday morning -- the 22nd quake to strike the area in 24 hours.
The quake struck at 8:14 a.m. and was centered 1 mile northeast of San Ramon and 3 miles southeast of Danville.
The USGS reported the temblor to have a depth of 5.3 miles.
Over 100 people reported feeling some shaking in the area.
The temblor follows several other small quakes in the same area overnight, including a 2.6-magnitude quake at 3:22 a.m. and a 2.9 quake at 3:58 a.m.
The earthquakes are most likely a result of seismic activity on the Calaveras fault, according to the USGS.
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Strong earthquakes with an epicenter off the coast can trigger tsunamis, depending on the size and type of the fault movement. The Pacific Tsunami Warning Center tracks earthquake data for the West Coast.
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