Trajectory of the mt. St. Augustine 1976 eruption ash cloud.
The ash clouds from the 23 January 1976 eruption of Mt. St. Augustine in Alaska drifted over Arizona on 25 January at an altitude of 6 kilometers as deduced from air trajectories and the observation of an unusual cloud.
Meinel
A B
AB
Meinel
M P
MP
Shaw
G E
GE