Magnitude 4.2 earthquake strikes near Yellowstone

An earthquake struck Wyoming in the area of Yellowstone National Park on Wednesday morning, according to the University of Utah's Seismograph Stations. There were no reports of damage or injuries.

The 4.2 magnitude earthquake struck just after 7:30 a.m. local time at a depth of 8.7 miles, the University of Utah said. 

According to the U.S. Geological Survey, "The Yellowstone region is one of the most seismically active areas in the United States." The area sees an average of 1,500 to 2,500 quakes a year, but most are too small for humans to detect — 99% of them are below magnitude 2.