United States Geological Survey scientists have shared maps that show where ash would fall across the US if a Yellowstone ...
The new map shows where volcanic ash would fall in the event of a Yellowstone supereruption, with the supervolcano's last ...
A magnitude 2.7 earthquake was recorded near Helena on Sunday, March 9, 2025, according to the U.S. Geological Survey (USGS).
An example of the possible distribution of ash from a month-long Yellowstone supereruption. The distribution map was generated by a new model developed by the US Geological Survey using wind ...