“This is it!”: Mount St. Helens blew 45 years ago this week. A young grad with a camera watched the ash fall — and began to understand his calling.

The 45th anniversary of the catastrophic eruption of Mount St. Helens is on May 18. Here's what to know and when the volcano might erupt again.

The Mount St. Helens eruption anniversary prompts investigation into the California earthquakes: eruption history, threat levels.

The 1990s focused on rebuilding and establishing new visitor facilities, including the Johnston Ridge Observatory, which ...

ST HELENS, Wash — Engineers who spent the days and years following the 1980 eruption of Mount St. Helens working on the recovery of the region, returned Tuesday to check in on some of their work.

The 45th anniversary of the catastrophic eruption of Mount St. Helens is on May 18. Here's what to know and when the volcano might erupt again.

According to the USGS, Mount St. Helens is the most active volcano in the lower 48 states and the most likely in the Cascades to erupt again.