During October 2015, the University of Utah Seismograph Stations, responsible for the operation and analysis of the Yellowstone Seismic Network, reports 83 earthquakes were located in the Yellowstone National Park (YNP) region. The largest event was a small earthquake of magnitude 2.4 on October 13, at 06:23 AM MDT, located about 8.5 miles west of Old Faithful, WY.
October 2015 seismicity included a small earthquake swarm of 23 earthquakes occurring on October 13 and 14 (MDT). The largest swarm earthquake (magnitude 2.1) occurred October 13, 09:10 PM MDT, located 9 miles north northwest of West Yellowstone, MT.
Yellowstone earthquake activity in October remains at low background levels.
GPS stations in Yellowstone continue to show little or no ground movement.
http://www.unavco.org/instrumentation/networks/status/pbo/data/HVWY (click on Static Plots / Time Series)
The 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.
November 03, 2015. Yellowstone, Etats-Unis :
44°25’48” N 110°40’12” W,
Summit Elevation 9203 ft (2805 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
Source : YVO.
Photo : Ron Niebrugge