Seismicity at Pavlof Volcano has increased in the past 24 hours, and minor steam emissions were observed in web camera images on July 2, 2016. This unrest prompts the Alaska Volcano Observatory (AVO) to raise the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory. Pauses in eruptive activity lasting for weeks to months have occurred during past eruptive episodes of Pavlof Volcano.
Pavlof is one of those volcanoes that can erupt without very much in the way of precursory activities. It’s very easy for the magma to arise in the volcano and make it out. So even subtle signs of unrest it is more prudent to increase the alert level. FULL REPORT