|BULUSAN VOLCANO BULLETIN 29 December 2011 8:00 A.M.|
|Thursday, 29 December 2011 07:14|
Bulusan Volcano’s (12.7667°N, 124.0500°E) seismic network detected five (5) volcanic earthquakes during the past 24 hours. Steaming activity was weak with white steam clouds rising 50 meters above the southwest vents and creeping downslope from the northwest vents. Ground deformation survey (precise leveling) last 14-18 November 2011 yielded slight inflation at both Inlagadian leveling line on the north-northeast flank and at Mapaso leveling line on the south-southeast flank relative to the previous survey last 16 - 20 August 2011.
Alert Level 1 status is strongly reiterated over Bulusan Volcano. The local government units and the public are reminded that entry to the 4-kilometer radius Permanent Danger Zone (PDZ) is strictly prohibited due to the possibility of sudden steam and ash eruptions. Civil aviation authorities must also warn pilots to avoid flying close to the volcano’s summit as ejecta from sudden eruptions may be hazardous to aircraft. Furthermore, people living within valleys and along 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 development will be relayed to all concerned.