|BULUSAN VOLCANO BULLETIN 22 November 2010 8:00 A.M.|
|Sunday, 21 November 2010 23:59|
Bulusan Volcano’s (12°46.2’N, 124°03’E) seismic network recorded thirty-three (33) volcanic earthquakes during the past 24-hour observation period. One of the recorded quakes was an explosion type that accompanied the 7:22 A.M. 2 kilometers ash ejection yesterday. The summit of the volcano was obscured the whole day yesterday. Early this morning, weak emission of white steam from the volcano’s crater and known thermal vents was observed.
Alert Level 1remains in effect over Bulusan Volcano. The public is reminded not to venture inside the 4-kilometer radius Permanent Danger Zone (PDZ) because the area is at risk to sudden steam and ash explosions. Due to the prevailing wind direction, residents located in the northwest and southwest sectors of the volcano are advised 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 watchful against sediment-laden stream flows and lahars because ash and other loose volcanic materials may be remobilized during heavy and prolonged rainfall. DOST-PHIVOLCS is closely monitoring Bulusan Volcano’s activity and any new significant development will be immediately relayed to all concerned.