On a quiet night in 1959, the ground shook violently in Montana, creating Earthquake Lake and leaving a lasting mark. Here’s ...

Monday morning's magnitude-4.2 quake was the strongest to occur near western Montana since 2020, and the second strongest ...

Ranger naturalist George D. Marler monitoring of changes in hydrothermal activity in Yellowstone was useful in understanding the changes in hydrothermal activity following the August 1959 M7.3 Hebgen ...