|Active and Potentially Active Volcanoes in Washington|
|Volcano||Eruption type(s)||Number of eruptions in past 200 years||Latest activity (in years before present or year(s) A.D.)||Remarks|
|Mount Baker||Ash, lava||1||1870||Increased heat output and minor melting of summit glacier in 1975; some debris flows not related to eruption. History of extensive pyroclastic flows|
|Glacier Peak||Ash||More than 1?||Before 1800|| |
|Mount Rainier||Ash, lava||1?||1882||History of massive debris avalanches and debris flows. Occasional very shallow seismicity|
|Mount Adams||Lava, ash||0||More than 3,500 years ago||Debris flows are the most recent events|
|Mount St. Helens||Ash, dome, lava||2-3||1980 to present||Continuing intermittent volcanic activity|
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