MERCED COUNTY (CBS SF) — The U.S. Geological Survey is reporting an earthquake with a magnitude of 4.0 has struck Merced County Tuesday morning.

The USGS says the quake hit at 11:36 a.m. and was centered 25 miles southwest of South Dos Palos at a depth of 1 mile.

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Deeper quakes are less noticeable while a shallow quake–in the 0 to 40 mile depth range–can feel much stronger than their actual reported magnitude. Quakes just below the earth’s surface, in the 0 to 10 miles range, can cause even more damage at lower magnitudes.

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People as far north as Gilroy reported feeling the quake on the USGS’ website. No damage was immediately reported.

A series of smaller quakes have shook the area over the last couple days.

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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.

Tsunami Alerts & Maps