Many residents of Putnam and northern Westchester counties woke up with a bang this morning, and not because of the impending storm. A 2.2-magnitude earthquake was reported about three miles northwest of Mohegan Lake in Yorktown, according to the United States Geological Survey. The epicenter of the quake, which was reported at 6:14 a.m., was in Putnam Valley, according to the USGS. People throughout the area posted on social media about feeling the quake, including residents of Chappaqua, Cortlandt, Lewisboro, Mahopac and Putnam Valley, and even Monroe in Orange County. Erik Contzius said he felt the earthquake at his home in Peekskill. "I thought it was a snowplow at first," he told The Journal News/lohud. "But then the entire house started shaking. My first thought was Indian Point or something bad happening." Contzius said "there was a little bit of relief" when it was confirmed to be an earthquake.