Mag. 3.2 earthquake - 22 km SSW of Mammoth, Wyoming

"A light magnitude 3.2 earthquake hit 99 km (61 mi) away from Bozeman, Montana, United States, in the early morning at 1.29 am local time (GMT -6). The quake had a very shallow depth of 8.1 km (5 mi) and was not felt (or at least not reported so)." VD