USGS Volcano Hazards Program Volcano Update

YVO update page and observatory web site

November 2013 Yellowstone Monthly Earthquake Activity Report (updated December 3, 2013)

During November 2013, the University of Utah reports 301 earthquakes were located in the Yellowstone National Park region. The largest earthquake was a minor event of magnitude 3.4 on November 23, 2013 at 01:47 PM MST, located about eleven miles north northeast of West Yellowstone, Montana. This event was part of an energetic earthquake swarm, of 209 earthquakes, that began November 23, 2013 and continued through the end of the month. The swarm contained three events of magnitude 3 or larger and several magnitude 2 events. No earthquakes were reported felt. The swarm was located in an area that has experienced earthquake swarm activity in the past.

Current deformation patterns at Yellowstone remain within historical norms.

Please see: 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: Yellowstone Volcano Observatory (YVO) provides long-term monitoring of volcanic and earthquake activity in the Yellowstone National Park region. Yellowstone is the site of the largest and most diverse collection of natural thermal features in the world and the first National Park. YVO is one of the five USGS Volcano Observatories that monitor volcanoes within the United States for science and public safety.

YVO Member agencies: USGS, Yellowstone National Park, University of Utah, University of Wyoming, UNAVCO, Inc., Wyoming State Geological Survey, Montana Bureau of Mines and Geology, Idaho Geological Survey

Update in Common Alerting Protocol (CAP) format