GARRISON, N.Y. (CBSNewYork/AP) — A “micro earthquake” shook Putnam County on Saturday.

The Lamont-Doherty Cooperative Seismographic Network says a 2.5-magnitude earthquake was recorded at 10:46 in a heavily wooded area of Garrison, about 3 miles beneath the Appalachian Trail and a few miles north of Peekskill in Westchester County.

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Seismologist Leonardo Seeber told the Journal News it wasn’t along any known fault lines.

The paper reported that residents in the lower Hudson Valley didn’t hear or feel anything, but those near the epicenter were startled into the streets. No injuries have been reported, CBS 2 said.

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The U.S. Geological Survey listed the event as a category 5 earthquake. It typically causes light shaking and no damage. The weakest category is 1; the strongest is 10-plus.

The United States Geological Survey told 1010 WINS the tremor is “normal” and such occurrences happen around the world all the time.

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