During the month of November 2010, 96 earthquakes were located in the Yellowstone National Park region. The largest event was a magnitude 2.1 on November 6 at 8:51 PM MDT, located about 9 miles southeast of West Yellowstone, MT. This event was part of a small earthquake swarm recorded November 5 - 8 about 9 miles southeast of West Yellowstone, MT. The swarm contained 40 events with magnitudes 2.1 to 0.3.
Earthquake activity continues at background levels.
Ground Deformation Summary: Careful analysis of the Yellowstone GPS data shows that the period of accelerated Yellowstone caldera uplift, beginning in 2004, has decreased. Some GPS stations exhibit little change and others appear to reflect slight subsidence. A record of recent ground displacement can be found at:
http://pboweb.unavco.org/shared/scripts/stations/?checkkey=WLWY&sec=timeseries_plots×eries=raw