A rare earthquake jolted the northern suburbs of Denver, in the area of the Mile High City, just after sunrise, catching many Colorado residents completely off guard.According to the U.S. Geological Survey (USGS), the quake struck at 6:08 a.m. The epicenter was located roughly 3 miles southwest of Dacono, a small town just off Interstate 25. While USGS didn't classify the tremor as large, it was shallow and strong enough to be widely felt across Denver's northern corridor, including Thornton, Broomfield, Erie, and even some parts of Boulder.
