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BULUSAN VOLCANO BULLETIN 31 May 2015 8:00 A.M. PDF Print
Sunday, 31 May 2015 07:48

Bulusan Volcano’s (12°46.2’N, 124°03’E) seismic monitoring network recorded one (1) volcanic earthquake during the past 24-hour observation period.  Weak emissions of white steam plumes that crept downslope towards southwest were observed.  Precise Leveling surveys conducted from May 5 to May 14, 2015 indicate very slight inflation of the volcano’s edifice relative to the March 2015 surveys.

Alert Level 1 (abnormal) remains in effect over Bulusan Volcano. This indicates that hydrothermal processes may be underway 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 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.