The ground deformation occurring in north-central Yellowstone, which we reported in an Information Statement on February 18, 2014, continues. In March, YVO plans to deploy several additional GPS instruments to learn more about this scientifically interesting deformation episode. Caldera subsidence, which began in 2010, appears to be slowing. All the deformation currently occurring in Yellowstone remains well within historical norms.

During February 2014, the University of Utah reports 245 earthquakes were located in the Yellowstone National Park region. February seismicity in Yellowstone was marked by an ongoing cluster of 153 earthquakes, located about 5 miles WNW of Norris Geyser Basin, YNP, that persisted throughout the month. The cluster included the largest event of the month, which was a minor earthquake of magnitude 3.5 on February 11, 2014 at 4:03 PM MST.

via USGS Volcano Hazards Program Volcano Update.