The locations of the quakes.
Enlarge U.S. Geological Survey

The locations of the quakes.

The locations of the quakes.
U.S. Geological Survey

The locations of the quakes.

"The largest earthquake to strike Colorado in almost 40 years" shook buildings but apparently caused little damage late last night, Denver's ABC 7 News reports. A few homes may have been damaged and some rock slides were reported.

It was a 5.3 magnitude temblor and the epicenter was "about 180 miles south of Denver."

The shaking hasn't stopped, according to the U.S. Geological Survey. It counts 12 earthquakes of 2.1-magnitude or greater in the same area since Monday afternoon.

Tags: Colorado earthquake