Four dozen earthquakes were detected at Mount St. Helens over the last month, but volcano seismologist Dr. Weston Thelen of the United States Geological Survey said it’s nothing to worry about. While ...

Scientists and emergency managers who keep an eye on Washington state volcanoes Mount Rainier and Mount St. Helens in case of a future eruption are collaborating with their counterparts from Columbia.

World’s largest lahar evacuation drill In the wake of the Mount St. Helens eruption, the US Geological Survey set up an lahar detection system at Mount Rainier in 1998, which since 2017 has been ...

The most destructive volcanic eruption in United States history happened less than half a century ago in Washington state. On May 18, 1980, the north side of Mount St. Helens, in southwestern ...

The effects of isolation on primary succession are poorly documented I monitored vegetation recovery on two Mount St. Helens lahars (mud flows) with different degrees of isolation using contiguous ...

The scenic national forest road to the southeast side of Mount St. Helens National Volcanic Monument, closed since the November 2006 floods, reopens Friday, Oct.3, 2008. Gifford Pinchot National ...

A volcanic eruption is one of the most powerful forces in nature, a seemingly unstoppable phenomenon that can have far-reaching impacts far beyond the area surrounding the volcano itself. When a ...

Four dozen earthquakes were detected at Mount St. Helens over the last month, but volcano seismologist Dr. Weston Thelen of the United States Geological Survey said it’s nothing to worry about. While ...