Anao-aon Central Elementary School_San Francisco-rev.jpg Runway_Surigao Airport-rev.jpg Surigao State College of Technology-rev.jpg Honrado-rev.jpg Rupture in Brgy.jpg Rupture in San Francisco,SDN-rev.jpg Archway_San Francisco, SDN-rev.jpg parallel fault trace in Brgy.jpg
Friday, 04 March 2011 07:01

Bulusan Volcano’s (12°46.2’N, 124°03’E) seismic network recorded one (1) volcanic earthquake and three (3) rockfall related events during the past 24 hours.  Steaming activity at the SE thermal vent was weak while steaming in other known vents was not observed due to thick cloud cover. No other significant volcanic activity was observed since the 21 February 2011 ash explosion. 


Bulusan Volcano’s status remains at Alert Level 1.  This means that the source of activity is hydrothermal and shallow. Entry to the 4-kilometer radius Permanent Danger Zone (PDZ) is strictly prohibited, since the area is at risk to sudden steam and ash explosions.  Due to the prevailing wind direction, residents 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 be hazardous to aircraft. If possible aircraft should avoid flying on the western side of the volcano as volcanic debris are likely to be carried in this direction by the prevailing winds. Furthermore, people living near valleys and river/stream channels should be vigilant against sediment-laden stream flows and lahars in the event of 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.