YELLOWSTONE VOLCANO OBSERVATORY MONTHLY UPDATE (1 Viewer)


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YELLOWSTONE VOLCANO OBSERVATORY MONTHLY UPDATE
U.S. Geological Survey
Monday, May 1, 2017, 12:53 PM MDT (Monday, May 1, 2017, 18:53 UTC)


YELLOWSTONE VOLCANO (VNUM #325010)
44°25'48" N 110°40'12" W, Summit Elevation 9203 ft (2805 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Seismicity

During April 2017, the University of Utah Seismograph Stations, responsible for the operation and analysis of the Yellowstone Seismic Network, reports 61 earthquakes were located in the Yellowstone National Park (YNP) region. The largest event was a microearthquake of magnitude 2.4 that occurred on April 21, 01:35 AM MDT located 2.5 miles north northeast of Lake Village in YNP.

April seismicity did not include any swarm activity.

Yellowstone earthquake activity in April remains at low background levels.

Ground deformation

Monitored locations within the Yellowstone caldera continue to slowly subside.
Uplift north of the caldera, centered near the Norris Geyser Basin continues at a low rate.
Current deformation patterns at Yellowstone remain within historical norms.

An example of GPS data can be found at http://www.unavco.org/instrumentation/networks/status/pbo/data/WLWY (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.

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
 

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