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BULUSAN VOLCANO UPDATE, 21 November 2010, 8:00 A.M PDF Print
Sunday, 21 November 2010 08:54

At 7:22 A.M today, Bulusan Volcano (12°46.2’N, 124°03’E) ejected a grayish steam and ash column that reached a height of approximately 2km above the crater rim and drifted to the southwest direction. The ash ejection was accompanied by a rumbling sound and reflected as an explosion type earthquake with duration of nine minutes and thirty seconds. Prior to the ash ejection, the Bulusan seismic network detected a total of twelve (12) volcanic earthquakes.

Alert Level 1 remains 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.