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Updates are compiled for the previous month and posted in the first week of the new month.

YELLOWSTONE VOLCANO OBSERVATORY MONTHLY UPDATE
Thursday, July 1, 2010 12:08 PM MDT (Thursday, July 1, 2010 18:08 UTC)


YELLOWSTONE VOLCANO (CAVW #1205-01-)
44°25'48" N 110°40'12" W, Summit Elevation 9203 ft (2805 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

During the month of June 2010, 131 earthquakes were located in the Yellowstone region. The largest event was a magnitude 2.9 on June 25th at 6:07 PM MDT, located about 15 miles south southeast of Old Faithful, YNP. One small earthquake swarm was recorded from June 6th through 12. The swarm included 47 earthquakes with magnitudes ranging from 2.2 to -0.5 and was located 6 miles east of West Thumb, YNP. Seismicity continues at background levels.

Ground Deformation Summary: Continuous GPS data show that uplift of the Yellowstone Caldera has ceased for now. The WLWY station, located in the northeastern part of the caldera, underwent a total of ~23 cm of uplift between mid-2004 and mid-2009. Its record can be found at:
http://pboweb.unavco.org/shared/scripts/stations/?checkkey=WLWY&sec=timeseries_plots×eries=raw

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The Yellowstone Volcano Observatory (YVO) is a partnership of the U.S. Geological Survey (USGS), Yellowstone National Park, and University of Utah to strengthen the long-term monitoring of volcanic and earthquake unrest 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.

CONTACT INFORMATION:
Jacob Lowenstern, USGS
Scientist-in-Charge, Yellowstone Volcano Observatory
jlwnstrn@usgs.gov

Robert Smith, University of Utah
Coordinating Scientist, YVO

Henry Heasler, Yellowstone National Park
Coordinating Scientist, YVO

The Yellowstone Volcano Observatory (YVO) was created as a partnership among the U.S. Geological Survey (USGS), Yellowstone National Park, and University of Utah to strengthen the long-term monitoring of volcanic and earthquake unrest 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.

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