The northern half of Yellowstone National Park reported a 4.8 earthquake early Sunday.
The earthquake shook the park around 6:34 a.m., about 4 miles north-northwest of Norris Geyser Basin, according to the University of Utah Seismograph Station.
Utah university spokesmen said the temblor was felt in the Montana border towns of West Yellowstone and Gardiner, both about 20 miles from the epicenter. There were no reports of damage or injuries.
The park, at this time of year, does not draw many visitors.
Yellowstone sees frequent small earthquakes. Since Thursday, there have been at least 25 recorded in the nation’s first national park.
On Sunday alone, geologists have registered a total of eight earthquakes. The site at http://tinyurl.com/7db3ty records the size and location of nearly every quake that’s registered in the park.
Yellowstone National Park sits on top of a “supervolcano” that last erupted on a massive scale about 640,000 years ago. Scientists do not believe a super explosion is due anytime soon.