|Start:||August 1951 ||Observed|
|Remobilized tephra - no eruption: ||
|Eruption Type:||Not an eruption.|
From Jones (1952): "On August 9 , A.E. Jones saw the volcanoes from Pavlof to Douglas, and, although an ash fall near Katmai had been reported a few days before, he could see no signs of activity." Hildreth (1983) states: "Published compilations notwithstanding, there are no credible reports of historic eruptions in the Katmai group except at Novarupta in 1912 and at Trident in 1953 - 1968."