USGS Volcano Hazards Program Volcano Update
AVO update page and observatory web site
Seismicity remains somewhat elevated. Web camera and satellite views of Iliamna from the past week show mostly clear conditions.
Last Friday evening, October 12, at 8:16 pm AKDT (4:16 Saturday UTC) a rock and snow avalanche occurred at Iliamna, originating from a large rock face adjacent to the northernmost fumaroles near the summit. The slide measured 200 m wide and ran at least 2.8 km down the eastern flank onto the Red Glacier. The dark-colored slide was visible the following day to residents on the Kenai Peninsula, 80 km to the east across Cook Inlet. The duration (6-10 minutes), and the run out (nearly 3 km) corresponds to a flow speed of 5-9 m/s. The upper east flank of Iliamna is known to produce large avalanches, most recently in 2005.
Last Friday evening, October 12, at 8:16 pm AKDT (4:16 Saturday UTC) a rock and snow avalanche occurred at Iliamna, originating from a large rock face adjacent to the northernmost fumaroles near the summit. The slide measured 200 m wide and ran at least 2.8 km down the eastern flank onto the Red Glacier. The dark-colored slide was visible the following day to residents on the Kenai Peninsula, 80 km to the east across Cook Inlet. The duration (6-10 minutes), and the run out (nearly 3 km) corresponds to a flow speed of 5-9 m/s. The upper east flank of Iliamna is known to produce large avalanches, most recently in 2005.
Update in Common Alerting Protocol (CAP) format
