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Awareness and Preparedness
|BULUSAN VOLCANO BULLETIN 24 November 2010 8:00 A.M.|
|Thursday, 25 November 2010 08:25|
No volcanic earthquake was recorded by the seismic network around Bulusan Volcano (12°46.2’N, 124°03’E) during the past 24 hours. From 4:00 PM to 6:00 PM yesterday, emission of a very weak to weak volume of white steam was observed from the SE thermal vent. However, when the summit was visible at 5:20 AM today, no steaming was observed from the summit crater and all known thermal vents at the upper slope of the volcano. Measurement of sulfur dioxide (SO2) emission rate during traverse readings from 8:00 AM to 10:52 AM yesterday, detected no gas emanations from the volcano.
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.