Largest earthquake in Yellowstone in more than 30 years

Excerpts from press release issued by Yellowstone Volcano Observatory.
30 March 2014 – West Yellowstone, Montana


The epicenter of the magnitude 4.8 shock was located 4 miles north-northeast of Norris Geyser Basin in Yellowstone National Park, Wyoming.

This earthquake is part of a series of earthquakes that began in this area on Thursday, March 27. As of 8:15 am today, this series has included at least 25 earthquakes in addition to the main shock, with the largest of magnitude 3.1.

The magnitude 4.8 main shock was reported felt in Yellowstone National Park and in the towns of West
Yellowstone and Gardiner, Montana.

Today’s event is the largest earthquake at Yellowstone since February 22, 1980, and occurred near the center of a region of recent ground uplift described in a YVO Information Statement on February 18, 2014. The Yellowstone Volcano Observatory has been tracking this uplift episode for about 7 months.

According to the Italian website, this earthquake is not associated with volcanic activity. 

However, it is a continuation of the ground deformation that has been occurring during the last two months, which was reported in a statement on February 18, 2014. At that time the University of Utah reported 245 earthquakes in the region of Yellowstone National Park.

Seismicity at Yellowstone in February was characterized by a continuous swarm of 153 earthquakes about 5 miles NW of Norris Geyser Basin, YNP, which persisted throughout the month.

Thanks to Jack Hydrazine and Alessandro Decet for these links

9 thoughts on “Largest earthquake in Yellowstone in more than 30 years”

  1. 4.8 could be the “main” one, or it could be one of the warm ups. Nobody can say yet. Asserting that was “the main one” is part of why so-called “science” has no credibility.

  2. “…this earthquake is not associated with volcanic activity… However, it is a continuation of the ground deformation…”

    Hmm… I thought ground deformation was a common forerunner of volcanic activity, prior to actual eruptions?

    • They have never experienced a volcano as large as this one. The precursors of something this large are something never before encountered. Who knows what to expect on a scale this large.

  3. March has the most earthquakes on average..worldwide! Japanese tsunami march 11,2011… also 2 of strongest quakes ever recorded in Alaska,just making an observation,there must be a reason? March is here,so you can bet,its gona get shaky.

  4. See what AGW can do? – make it hotter and colder; drier and wetter; windier and not windier; no volcanoes and big volcanoes. /sarc

  5. If the Yellowstone super volcano Erupts, then those living in coal country will again have something to use the mines for to move underground, that will be more action then they’ve seen since 2008 when Obama took office.

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