AVO Bogoslof YELLOW/ADVISORY - No activity observed in seismic and infrasound data.
Oct 10, 2017 20:26 - Low-level unrest at Bogoslof volcano continues. No activity was observed in partly cloudy satellite views over the past day. No significant activity was detected in seismic or infrasound data from sensors located on neighboring islands over the past day. Bogoslof volcano remains at a heightened state of unrest and in an unpredictable condition. Activity can escalate quickly with explosions producing high-altitude (>15,000 ft) volcanic clouds with little to no detectable precursory activity. Some previous explosions have been preceded by an increase in earthquake ...