USGS Volcano Notice - DOI-USGS-CVO-2021-11-19T10:49:37-08:00

CASCADES VOLCANO OBSERVATORY WEEKLY UPDATE
U.S. Geological Survey
Friday, November 19, 2021, 10:57 AM PST (Friday, November 19, 2021, 18:57 UTC)

CASCADE RANGE VOLCANOES
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN

Activity Update: All volcanoes in the Cascade Range of Oregon and Washington are at normal background levels of activity. 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.

Recent Observations: Earthquakes were located at Mount Rainier, Mount St. Helens, and Mount Hood this past week, consistent with background seismicity levels at each volcano. This week field crews worked at Mount Rainier to perform maintenance on several monitoring stations.

The U.S. Geological Survey and Pacific Northwest Seismic Network (PNSN) continue to monitor these volcanoes closely and will issue additional updates and changes in alert level as warranted.

For images, graphics, and general information on Cascade Range volcanoes: https://www.usgs.gov/observatories/cascades-volcano-observatory
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/natural-hazards/volcano-hazards/notifications