USGS Volcano Notice - DOI-USGS-CVO-2026-10-30T17:16:32+00:00

CASCADES VOLCANO OBSERVATORY WEEKLY UPDATE
U.S. Geological Survey
Friday, October 30, 2026, 10:53 AM PDT (Friday, October 30, 2026, 17:53 UTC)

CASCADE RANGE (VNUM #)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Summary: All volcanoes are at normal levels.

Activity Update: All volcanoes in the Cascade Range of Washington and Oregon 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.

Over the past week, small earthquakes were detected at Mount Rainier, Mount St. Helens, and Mount Hood. All monitoring data remain consistent with background activity levels throughout the Cascade Range. Field crews installed a new station at Crater Lake and performed station maintenance at Newberry.

At Mount Hood, winter conditions have arrived, and the melt pond near Coalman Glacier has begun to freeze over.

The U.S. Geological Survey Cascades Volcano Observatory and the University of Washington Pacific Northwest Seismic Network continue to monitor Washington and Oregon volcanoes closely and will issue additional notifications as warranted.

Website Resources

For images, graphics, and general information on Cascade Range volcanoes: https://www.usgs.gov/observatories/cvo
For seismic information on Oregon and Washington volcanoes: http://www.pnsn.org/volcanoes
For information on USGS volcano alert levels and notifications: https://www.usgs.gov/programs/VHP/volcano-notifications-deliver-situational-information

CONTACT INFORMATION:

Seth Moran, Acting Scientist-in-Charge, Cascades Volcano Observatory, smoran@usgs.gov

General inquiries: askCVO@usgs.gov

Media inquiries: volcanomedia@usgs.gov