Yellowstone National Park Rattled by Largest Earthquake in 34 years
(Reuters) - Yellowstone National Park, which sits atop one of the world's largest super-volcanoes, was struck on Sunday by a magnitude 4.8 earthquake, the biggest recorded there since February 1980, but no damage or injuries were immediately reported.
The tremor, a relatively light event by seismic standards, struck the northwest corner of the park and capped a flurry of smaller quakes at Yellowstone since Thursday, geologists at the University of Utah Seismograph Stations said in a statement.
The latest earthquake struck at 6:34 a.m. near the Norris Geyser Basin and was felt about 23 miles away in two small Montana towns adjacent to year-around entrances to the park - Gardiner and West Yellowstone.
The national park spans 3,472 square miles (8,992 square km) of Wyoming, Montana and Idaho, and draws about 3 million visitors each year to its iconic geysers and wildlife attractions, including bison.
http://www.scientificamerican.com/article/yellowstone-national-park-rattled-by-largest-earthquake-in-34-years/?&WT.mc_id=SA_DD_20140331
This is not a good sign ...