Researchers Report Yellowstone Earthquake Swarm

YELLOWSTONE NATIONAL PARK, Wyo. (AP) - A moderate swarm of earthquakes is rattling Yellowstone National Park in what researchers at the University of Utah say is a common event.

Jamie Farrell is a doctoral student with the university in Salt Lake City. He says that the earthquake swarm started Sunday night and that more than 200 had been counted by 9 a.m. Monday. The swarm is centered about 10 miles northwest of Old Faithful. The largest of those quakes was magnitude 2.7. There has been one report of an earthquake being felt in the park.

The U.S. Geological Survey says a 3.3-magnitude quake struck at 8:39 last night, centered 9 miles southeast of the town of West Yellowstone, Montana. No damages or injuries have been reported.

Farrell says researchers have identified 79 earthquake swarms at Yellowstone since 1995. He says the swarms generally last from a few days to weeks but sometimes last for months.

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