An earthquake swarm hit a region of flood-stricken Yellowstone on Sunday ahead of the closure of the National Park due to unprecedented floods. Data from the University of Utah's seismograph ...

A 3.5 earthquake hit Yellowstone National Park this afternoon as the swarm of earthquakes that started Sunday continues to intensify. The earthquake occurred at 2:32 p.m., according to scientists ...

That’s more than half the total annual average in the park — 1,600 a year. Last year, a swarm of more than 800 quakes near Yellowstone Lake was recorded in late December and early January.

The quakes took place near Grizzly Lake in the northwest region of the park, between the areas of Norris and Mammoth, as part of an earthquake "swarm" there that started in July, according to the ...