yellowstone-volcanoThe Yellowstone Volcano Observatory says in its monthly update that 98 earthquakes happened in the Yellowstone National Park region in October. The largest quake measured 2.7 magnitude, and occurred on October 29 at 3:55 p.m. about 11 miles south-southwest of West Thumb. The quake was part of a small swarm of 15 earthquakes that occurred over six hours. The observatory, which utilizes the University of Utah’s Yellowstone Seismic Network for the report, said that the earthquake activity in October is considered “at low background levels.” More