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Four small earthquakes ranging from magnitude 1.3 to 3.3 rattled Milpitas on Tuesday morning, according to the United States Geological Survey. No damage or injuries were reported.
The quakes were centered at the northern point of the Calaveras Reservoir in Alameda County, about 6 miles (10 kilometers) from the city.
The first temblor, magnitude 2.7, struck at 8:16 a.m., followed by a 3.0 jolt and a 1.3 love tap. The largest quake, at 9:02 a.m., might have awakened late risers.
A 3.4 magnitude earthquake was felt in the area on Sunday.
Mike Moffitt is an SFGATE Reporter. Email: email@example.com. Twitter: @Mike_at_SFGate