BULUSAN VOLCANO BULLETIN, 13 December 2010, 8:00 A.M. PDF Print
Monday, 13 December 2010 08:01

The seismic network around Bulusan Volcano (12°46.2’N, 124°03’E) recorded seven (7) volcanic earthquakes during the past 24-hour observation period.  Steaming activity at the crater and known thermal vents ranged from wispy to moderate. The average sulfur dioxide flux yesterday was 4 tonnes/day.


Alert Level 1 remains enforced over Bulusan Volcano area. The public is strongly advised not to enter the 4-kilometer radius Permanent Danger Zone (PDZ) because the area is at risk to sudden steam and ash explosions.  Because of the prevailing wind direction, people residing in the northwest and southwest sectors of the volcano are reminded to take precautions against ashfalls.  Civil aviation authorities must also warn pilots to avoid flying close to the volcano’s summit as ejected ash and volcanic fragments from sudden explosions may pose hazards to aircrafts.  Furthermore, residents near valleys and river/stream channels should be vigilant against sediment-laden stream flows and lahars in the event of heavy and continuous rainfall.  DOST-PHIVOLCS is closely monitoring Bulusan Volcano’s activity and any new significant development will be immediately relayed to all concerned.