MT. KLYUCHEVSKOI VOLCANO 56o03'N, 160o39'E INFORMATION RELEASE No. 57 and 58 November 28, 1530 KST (0330 UTC) and November 30, 1645 KST (0445 UTC) On November 24, observers in Klyuchi reported a gas and steam plume rising 2 km above the volcano (to an estimated altitude of 22,000 ft above MSL). The plume extended to the SW for about 3 km. On November 30, observers in Klyuchi reported a vigorous gas and steam plume of unknown height visible above the volcano. Continuous volcanic tremor with an amplitude of 0.4 microns was recorded about 11 km from the volcano and 73 shallow earthquakes were recorded at stations as far away as 70 km. The possibility of more steam and ash explosions similar to those of the past several days remains high for the near future.