Two earthquakes — a 4.2 magnitude and a 3.3 magnitude — hit near Manhattan, about 66 miles east of Butte, around 6 p.m. Thursday.
Paul Laustsen, spokesperson for the U.S. Geological Survey, which tracks earthquakes around the world, said via text message that 74 people reported feeling the first Manhattan earthquake within a few minutes of its happening.
Many in Butte reported feeling the tremor.
Jessica Turner, geophysist with the USGS, said from her Golden, Colorado, office that, besides Butte, the earthquakes were felt as far away as Helena to the north and in Bozeman to the west.
She said there have been no reports of injuries. Turner said earthquakes of those magnitudes would likely cause nothing more than things falling off shelves.
A small tremor was reported near Seeley Lake in northwest Montana just after midnight Thursday. That registered as a 2.7 magnitude quake, Laustsen said.
Almost exactly 60 years ago, the Lake Hebgen earthquake hit south-central Montana with a 7.2 magnitude and took the lives of 28 people.