Alerts

September 24, 2020

Sep 23, 2020 19:31 - Low-level seismic tremor and small earthquakes detected over the past day. No activity observed in cloudy satellite and web camera images.

September 24, 2020

Sep 23, 2020 19:31 - Occasional small earthquakes detected over the past day. No activity was detected on the regional infrasound network. Minor steaming was observed from the active crater in partly cloudy satellite views.

September 24, 2020

Sep 23, 2020 19:31 - No small earthquakes were detected at Great Sitkin over the past day. Very minor steaming observed in clear satellite views of the volcano, but no activity observed in clear web camera views.

September 24, 2020

Sep 22, 2020 17:57 - Monitored CALIFORNIA VOLCANOES
Current Volcano Alert Level: all NORMAL
Current Aviation Color Code: all GREEN

September 24, 2020

Sep 18, 2020 15:39 - 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.