USGS Volcano Notice - DOI-USGS-CVO-2024-06-14T20:56:08+00:00

Activity Update: All volcanoes in the Cascade Range of Oregon and Washington are at normal background activity levels. These include Mount Baker, Glacier Peak, Mount Rainier, Mount St. Helens, and Mount Adams in Washington State and Mount Hood, Mount Jefferson, Three Sisters, Newberry, and Crater Lake in Oregon.

Past Week Observations: Earthquakes consistent with background-level activity were detected by monitoring stations at Newberry, Mount Baker, Mount Rainier, Mount Hood, and Mount St. Helens. Deep earthquakes under Mount St. Helens have slowly increased this spring and early summer, peaking this week at 38 events per week. These earthquakes are similar in depth and character to activity noted during the summer and fall of 2023, but are lower in intensity. There was no measurable change in deformation or gas during this time period. Geologists were in the field this week studying pre-1980 deposits from Mount St. Helens and a field crew performed maintenance on monitoring stations at Mount Rainier.