Printer friendly version
Observers in Port Heiden were able to view Veniaminof on several days this week. No steam or ash clouds were visible above the volcano. On Tuesday, August 16, the National Weather Service received a pilot report of a plume possibly containing small amounts of ash rising 1000 feet above the volcano. Analysis of satellite imagery detected no hot spots at the volcano during the week.
Beginning early on the 18th, eruptive activity at Kanaga Volcano appears to have intensified. Pilots reported "glowing" at the summit of the volcano in the early morning. Throughout the day, pilots and U.S. Fish and Wildlife personnel observed an eruption cloud over the mountain consisting of a white, dominantly steam portion, which rose to an estimated 15,000 feet ASL and a vigorously roiling, gray, ash-bearing portion which rose an estimated 8-10,000 feet. A loud rumbling, similar to the sound of a freight train, was heard in Adak all afternoon and into the evening. Prevailing winds carried the plume to the northeast and a light curtain of fallout was observed. A satellite image from approximately 2000 ADT on August 18 showed a plume drifting northeast from the volcano. However, no fallout was reported in Adak. The hot spot at the summit of the volcano, which yesterday appeared to have doubled in size, persists on a satellite image from 1004 ADT this morning. No plume is visible today, although cluod cover may obscure it. U.S. Fish and Wildlife observers report continued rumbling from the direction of the volcano.
COOK INLET VOLCANOES
Seismic activity at Spurr, Augustine, Redoubt and Iliamna
volcanoes remains at normal levels. AVO field crews are performing maintenance work at instrument sites on Spurr and Redoubt volcanoes today.
The Alaska Volcano Observatory continues to seismically
monitor Spurr, Augustine, Redoubt and Iliamna volcanoes.
We maintain a computerized alarm system that is capable of
notifying AVO seismologists during non business hours
should unusual seismic activity occur.