Description: Finch (1935) reports that on August 11, 1931: "One vent in the cone emitted dark smoke or ash along with a rumble." He also reports that smoke was observed in May 1931.
Jaggar (1931) reports that on August 11, 1931 a rumbling was heard, and on July 24, 1931, an ascent of Akutan showed the crater was hot, with steam.