|BULUSAN VOLCANO BULLETIN 16 December 2010 5:00 P.M.|
|Friday, 17 December 2010 06:52|
At 2:17 P.M. today, Bulusan Volcano (12°46.2’N, 124°03’E) ejected a grayish steam and ash column that reached approximately 500 meters above the crater rim and drifted to the southwest direction. The ash ejection was recorded as an explosion-type earthquake with a duration of three minutes. No ashfall was observed beyond the 4-km Permanent Danger Zone (PDZ). From 6:00 A.M to 2:00 PM today, one (1) volcanic earthquake was detected by the Bulusan seismic network. Steaming activity at the northwest and southeast vents ranged from weak to very weak. No sulfur dioxide (SO2) was detected during the measurement conducted today.
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.