Add Yahoo as a preferred source to see more of our stories on Google. When Mount St. Helens erupted on May 18, 1980, it caused enormous devastation. The eruption triggered mudslides, an explosion, and ...

The 1980 eruption of Mount St. Helens led to better seismic monitoring, increasing seismometers in the Pacific Northwest from a dozen to over 700. Mount St. Helens environment recovering 45 years ...

For a moment, it seemed like a blast from the past: a plume over Mount St. Helens on Tuesday looked like the volcano might be erupting again. But fortunately, this was not an eruption — just a ...

Peggy Short-Nottage and her husband joined sightseers rushing to Mount St. Helens when volcanic activity escalated in the spring of 1980. Instead of hopping in a car and making the drive to ...

MT. ST. HELENS, Wash — For many people who lived through the 1980 eruption of Mount Saint Helens, it is the biggest news story of their lifetimes. 45 years ago, the mountain that had been rumbling for ...

Sunday marks 45 years since Mount St. Helens erupted in Washington state. The deadly eruption happened shortly after 8:30 a.m. on May 18, 1980, following months of small explosions and earthquakes.