Mount Adams earthquakes time vs depth plot 1982-2024

During September 2024, the U.S. Geological Survey Cascades Volcano Observatory (CVO) and Pacific Northwest Seismic Network (PNSN) located six earthquakes at Mount Adams. For comparison, earthquakes at this volcano are typically located at a rate of about 1 every 2-3 years. Six earthquakes represent the most earthquakes located at Mount Adams in one month since monitoring began in 1982. The September earthquake magnitudes range from 0.9 to 2.0 and were not felt at the surface.

5-year period     Number of events located within 15 km of Mt. Adams

• 1980-1985                          0
• 1985-1990                          2
• 1990-1995                          1
• 1995-2000                          4
• 2000-2005                          5
• 2005-2010                          0
• 2010-2015                          2
• 2015-2020                          5
• 2020-9/30/2024               13