This is a questionable event. Description:
|Start:||May 5, 1933 ± 10 Days||Observed|
Till and others (1993) summarize this event as follows: "Following an earthquake in May 1933, Redoubt was observed 'belching smoke,' which was unusual since it 'had never been known to emit anything more than a slight wisp of smoke' (Fairbanks Daily News-Miner, May 25, 1933). The report does not mention tephra or that the smoke was dark in color. Hence, it seems likely that the activity was water-vapor emissions rather than an eruption."
Newspaper accounts of this event state that Captain Heine Berger, of the Discoverer, brought word of earthquakes in the region in early May, along with cracks in the ground up to several hundred feet long, and news that Mt. Redoubt was "smoking."