CRAIG | A magnitude 3.7 earthquake struck northwest Colorado at 8:50 p.m. Monday about 11 miles north of Craig, according to the National Earthquake Information Center in Golden.
The tremors could be felt over a sizable area in northwestern Colorado with more than 130 people reporting to the USGS that they felt it.
Although there are a number of young, mapped faults in Moffat County, this earthquake does not appear to fall on any of them, according to Dr. Vincent Matthews, director of the Colorado Geological Survey. The most recent earthquake in the vicinity occurred in 1994 when a magnitude 2.7 struck about 5 miles to the southeast.
“Northwest Colorado is another part of the state where a lack of monitoring equipment makes it very difficult to detect and locate smaller earthquakes,” Matthews said. “That’s key to understanding the region’s earthquake potential.”
This is the second earthquake of this size to strike Colorado in two days. A 3.9 magnitude hit the eastern plains on Sunday night.