AVO Iliamna GREEN/NORMAL – Debris avalanche detected in seismic and pressure sensor data. No volcanic unrest.

Jun 25, 2019 17:05 – AVO detected seismic and pressure sensor signals associated with a debris avalanche on Red Glacier on the flank of Iliamna Volcano around 4:05 p.m. Alaska Daylight Time on Thursday, June 20, 2019 (00:00 UTC on June 21, 2019). Avalanche events are somewhat common at this volcano. The most recent prior to last week’s occurred in April 2019. The seismic signals from the avalanche were observed on volcano monitoring networks on Illiamna and Redoubt volcanoes. Infrasound from this slide was detected with pressure sensors in Dillingham, Fairbanks, and those on the EarthScope …