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Thursday, 23 June 2016 10:18

Bulusan Volcano exhibited vigorous steaming activity characterized by dirty white steam plumes that crept downslope towards the west-northwest direction. This activity was observed visually from around 9:00 AM to 9:18 AM today. The dirty white plumes suggest a low energy ash emission. No seismic signal was detected prior or during the event indicating a shallow volcanic source.

Alert Level 1 (abnormal) remains in effect over Bulusan Volcano. This indicates that hydrothermal processes are ongoing beneath the volcano that may lead to more steam-driven eruptions. The local government units and the public are reminded that entry to the 4-kilometer radius Permanent Danger Zone (PDZ) is strictly prohibited due to the possibility of sudden and hazardous steam-driven or phreatic eruptions. Civil aviation authorities must also advise pilots to avoid flying close to the volcano’s summit as ash from any sudden phreatic eruption can be hazardous to aircraft. Furthermore, people living within valleys and along river/stream channels especially on the southwest and northwest sector of the edifice should be vigilant against sediment-laden stream flows and lahars in the event of heavy and prolonged rainfall. DOST-PHIVOLCS is closely monitoring Bulusan Volcano’s condition and any new development will be relayed to all concerned.