MT. KLYUCHEVSKOI VOLCANO 56o11'N, 160o39'E April 1, 1994, 1930 KDT (0630 UMT) Seismic activity at the volcano included both deep (3-13 events a day) and shallow (1-2 events a day) earthquakes as well as weak volcanic tremor (4.5-6 hours a day). Weak fumarolic activity from the central crater was observed on March 29 resulting in a plume extending to a height of about 1 km above the crater.