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 months exploded, sending millions of tons of rock and debris skyward. The eruption blocked out the sun in parts of central and eastern Washington, and sent massive waves of instantly-melted snow and millions blasted trees down river valleys. 57 people died that day - many of them instantly. Washington Emergency Managemen

Mayon Volcano's 47-DAY Eruption CONTINUES — Incandescent Lava CASCADES as Alert Level 3

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

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://ow.ly/4v2i50WKzEk Past Week Observations: Small earthquakes were detected at Mount Rainier and Mount St. Helens. Seismicity at Mount Rainier has largely returned to background levels after a swarm of small earthquakes that began on July 8. Coming in for a landing! Taking advantage of the g

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