After May 18, 1980, five more explosive eruptions of Mount St. Helens occurred in 1980, including this spectacular event of July 22, which sent pumice and ash 6 to 11 miles into the air. Mike ...

Inside the Cascades Volcano Observatory in Vancouver, Wash., SALI the robot weighs small crucibles holding sediment.SALI stands for Sediment Analysis Laboratory Instrument.“This is the modern legacy ...

The Toutle River in Mount St. Helen’s Monument, April 22, 2005, 25 years after the eruption. An aerial view of Mount St. Helens erupting, May 18, 1980. Nicholas George/The Chronicle/AP Photo ...

It was a quiet Sunday morning, at 8:32 a.m., 35 years ago when Mount St. Helens blew its top, sending tons of ash into the sky.

CASTLE ROCK, Wash. — In this week's Let's Get Out There, it's been 43 years since the 1980 eruption of Mount St. Helens. We look back at how the landscape changed back then, and how it continues ...

On May 18, 1980, after a series of earthquakes and venting, Mount St. Helens in Washington State erupted, depositing ash in 11 states and causing volcanic mudslides. Approximately 57 people were ki… ...

The May 18, 1980, eruption of Mount St. Helens in southern Washington claimed 57 lives and blasted the terrain of old-growth spruce over an area of 229 square miles.

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.

An unrivaled view of Mount St. Helens As the volcano blew on May 18, 1980, 11-year-old Tara Bowen and her father flew a small plane closer to the eruption than anyone else.

Mount St. Helens sends a huge column of steam and ash skyward, one day after scientists warned an eruption was imminent. Before Friday's mild eruption, Mount St. Helens had lain dormant for 18 years.

One such event was the eruption of Mount St. Helens in 1980, when the lava engulfed all living beings for miles. To counter this loss, scientists dropped gophers onto the scorched areas for one ...

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.