4.2 magnitude earthquake 20 km from West Yellowstone, Montana, United States

1981-05-22 07:56:41 UTC

UTC time: Friday, May 22, 1981 07:56 AM
Your time: 1981-05-22T07:56:41Z
Magnitude Type: ml
USGS page: M 4.2 - Yellowstone National Park, Wyoming
USGS status: Reviewed by a seismologist
Reports from the public: 0 people