During the month of July 2010, 76 earthquakes were located in the Yellowstone region. The largest event was a magnitude 1.6 on July 1 at 8:34 PM MDT, located about 6 miles south of West Yellowstone, MT. No earthquake swarms were recorded in July. Seismicity continues at background levels.
Ground Deformation Summary: On the basis of detailed analysis of the Yellowstone GPS data, the period of accelerated Yellowstone caldera uplift, beginning in 2004, appears to have notably decreased in the last several months toward long-term background levels. Analysis of Yellowstone-wide deformation will be reported by YVO as they are completed. A record of recent ground displacement can be found at: http://pboweb.unavco.org/shared/scripts/stations/?checkkey=WLWY&sec=timeseries_plots×eries=raw