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Eruptive activity continued at Veniaminof Volcano yesterday and into last night. At midday on Tuesday, pilots of a Reeve Aleutian Airways plane and personnel from the U.S. Fish and Wildlife Service (Alaksa Peinsula/Becharof National Wildlife Refuge) observed the eruption site. They described intermittent ash emission and block ejection from the prominent cinder cone located within the summit caldera at an elevation of 7075 feet. Material was being thrown to an estimated height of 500-1000 feet above the cone. Steam was emanating from a 200-300-yd-wide depression in the glacial ice east of the base of the cone.
Last Night, residents of Port Heiden, located approximately 50 miles northeast of the volcano, reported a very light ash fall. Residents of Perryville, Chignik, and Chignik Lake, south and east of the volcano, reported hearing a "rumbling noise" accompanied by a slight tremor about 22:00 last night.
Today, AVO received no reports of eruptive activity at Veniaminof Volcano. However, heavy clouds have obscured the mountain for most of the day, presumably hampering observations by aircraft and satellite. It is possible that intermittent eruption of ash above the volcanoe's summit continues. Ash falls are possible at Perryville and other nearby villages. Pilots should be aware of possible ash clouds at elevations generally not exceeding 20,000 feet above sea level.
Today, a scientist from the Geophysical Institute at the University of Alaska installed a seismometer in the town of Perryville, 20 miles south of the volcano. An additional instrument will be installed closer to the volcano and should aid in efforts to identify activity at Veniaminof.
AVO has received no new information regarding a continuation of eruptive activity at Seguam Volcano.