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Earthquake swarm noted in Yellowstone Park
Jun 3, 2014 - The Associated Press
HELENA, Mont. -- Seismographs have picked up a swarm of earthquakes in the northwestern corner of Yellowstone National Park, including dozens early Tuesday.
The University of Utah Seismograph Station reported five small earthquakes including those with magnitudes of 3.4, 2.7 and 3.2 in a 20-minute period starting at 3:33 a.m. in an area 16 to 18 miles south of Gardiner.
Earthquake information specialist Paul Roberson says there were another 20 to 30 small quakes Tuesday that hadn't yet been posted on the university's website.