A earthquake of magnitude 4.5 occurred near Quincy at 4:19 a.m., according to the U.S. Geological Service's Web site.

A Plumas County Sheriff's Office dispatcher in Quincy confirmed that the quake occurred but said no damage was reported, at least as of now.

The epicenter was described as 4 miles from Quincy, according to the U.S.G.S. data.

The quake was felt at homes in Grass Valley and Nevada City, according to some residents. It was described as a quick twisting motion and woke up some people.

This reporter and his family felt the shake at their home in Nevada City, prompting an inquiry on the U.S.G.S. site and call to the Plumas County Sheriff's Office for confirmation.

More than 250 people from this area, as well as Chico, Susanville, Truckee and Reno also reported feeling the quake, according to the U.S.G.S. Web site. They reported the shaking as "light" to "moderate."

Earthquakes are rare in the Sierra, but the shaking is unmistakable to people who remember them.

Here's the data on the quake from the U.S.G.S. Web site:

http://earthquake.usgs.gov/eqcenter/recenteqsus/Quakes/nc51213957.php

Here are reports from people who felt the quake:

http://earthquake.usgs.gov/eqcenter/dyfi/events/nc/51213957/us/index.html