AVO Bogoslof ORANGE/WATCH - Weakly elevated surface temperatures observed over past day. Otherwise, no activity.
Jul 16, 2017 23:12 - Weakly elevated surface temperatures were observed in a clear satellite image over the past day. No activity was detected in seismic, infrasound, or lightning data. Bogoslof volcano remains at a heightened state of unrest and in an unpredictable condition. Activity can escalate quickly with additional 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 activity that allowed for short-term forecasts of imminent significant explosive ...