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.
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Earthquake information specialist Paul Roberson said there were another 20 to 30 small quakes Tuesday morning that hadn't yet been posted on the university's website. He called it a fairly normal swarm for Yellowstone. He didn't expect there to be any damage.
Seismographs recorded 31 quakes in the same area south of Gardiner on Saturday, while another 23 were reported last Wednesday and Thursday in an area between 18 and 19 miles east-southeast of West Yellowstone.