During the month of March 2012, the University of Utah reports 51 earthquakes were located in the Yellowstone National Park region. The largest was a magnitude 2.3 event on March 3 at 6:02 PM MST, located about 20 miles west northwest of West Yellowstone, MT A small swarm of 10 events was recorded on March 3 about 10 miles northwest of West Yellowstone, MT with magnitudes ranging from M 2.1 to M 0.7
Yellowstone earthquake activity continues at relatively low background levels.
Slow subsidence of the caldera, which began in early 2010, continues. Current deformation patterns at Yellowstone are well within historical norms.
Please see: http://www.uusatrg.utah.edu/ts_ysrp.html for a map of GPS stations in the Yellowstone vicinity. For a graph of daily GPS positions at White Lake, within the Yellowstone caldera, please see: http://pbo.unavco.org/station/overview/WLWY