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Awareness and Preparedness
|BULUSAN VOLCANO BULLETIN 27 November 2010 8:00 A.M.|
|Saturday, 27 November 2010 08:11|
The seismic network around Bulusan Volcano (12°46.2’N, 124°03’E) recorded eleven (11) volcanic quakes during the 24-hour observation period. One of these was an explosion-type earthquake which was detected at 7:27 PM last night and lasting for eleven minutes. However, the summit was cloud-covered hampering visual observation. No rumbling sound was heard and no ashfall was observed at areas beyond four kilometers from the crater. Sulfur dioxide emission rate was measured at 13 tonnes/day.
The alert status of Bulusan Volcano remains at Alert Level 1. 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.