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

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 Rainier and Mount St. Helens. All monitoring data are consistent with background activity levels in the Cascade Range. Deep beneath the volcano's surface, gases are dissolved in m