Mount Edgecumbe has not had a major eruption in 4000 years. Recent earthquake activity shows magma intrusion at a depth of , but as of 2022, an eruption does not appear to be imminent. It has been classified by the Alaska Volcano Observatory (AVO) as "historically active". Mount Edgecumbe was a prop in a 1974 April Fools' Joke, which involved tricking the citizens of Sitka into believing the volcano was erupting.
