By the numbers, the May 18, 1980 eruption of Mount St. Helens resulted in about $1 billion in damages. The eruption killed 57 people, approximately 7,000 big game animals, and about 12 million fingerlings in hatcheries. Lahars destroyed 27 bridges and nearly 200 homes, and volcanic ash caused the first known in-flight aircraft engine failure, plus disrupted thousands of households for many months. The devastation spurred efforts to understand the power and awe of those moments, and to communicat

All volcanoes in the Cascade Range of Washington and Oregon are at normal background levels of activity this week. Current Volcano Alert Level: NORMAL Current Aviation Color Code: GREEN Weekly Update: https://on.doi.gov/2hwAiRm The spectacular eruption of Mount St. Helens on May 18, 1980, electrified scientists and the public. The colossal landslide, northward-directed blast, and eruption column made news worldwide. Reconnaissance of the devastation spurred efforts to understand the power and aw

All volcanoes in the Cascade Range of Oregon and Washington are at normal background activity levels. Current Volcano Alert Level: NORMAL Current Aviation Color Code: GREEN During the past week, small earthquakes were detected at Mount Rainier, Mount St. Helens, and Mount Hood. Field crews were at Mount St. Helens and Mount Rainier to finish installation of new monitoring stations. Last week, CVO staff installed five new stations along the White River, north of Mount Rainier in Washington state.

This week, all volcanoes in the Cascade Range of Washington and Oregon are at normal background levels of activity. Current Volcano Alert Level: NORMAL Current Aviation Color Code: GREEN Weekly Update: https://www.usgs.gov/programs/VHP/volcano-updates#cvo Past week observations: Small earthquakes were detected at Mount Baker, Mount Rainier, Mount St. Helens, Mount Hood, and Crater Lake. All monitoring data are consistent with background activity levels in the Cascade Range. This week marks the 1

Keep hiking along the Naches Loop Trail, and you'll start to notice chunks of dark granite scattered throughout the green bedrock. Where did that magma come from, and how old is it compared to Mount Rainier? | Cascade PBS