AVO Shishaldin ORANGE/WATCH – Active lava and spattering observed within the summit crater; alert level raised

Jul 24, 2019 21:17 – Elevated surface temperatures were observed in multiple satellite images over the past 24 hours accompanied by periods of weak seismic tremor. Yesterday, Alaska Volcano Observatory field crews observed active lava and minor spattering deep within the summit crater. In response, the Aviation Color Code was raised to ORANGE and the Alert Level to WATCH. No eruptive activity outside of the crater was detected in infrasound data or in clear web camera views of the volcano.

Shishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a …