I. SITUATION OVERVIEW
Bulusan Volcano (12=B046.2'N, 124=B003'E) seismic netwo rk recorded one (1) volcanic earthquake during the past 24 hours. Steaming activity from the crater and known thermal vents was not observed due to thick clouds that covered the upper slope of the volcano during the past observation period. No other significant volcanic activity was observed since the 21 February 2011 ash explosion.
Alert Level 1 remains hoisted over Bulusan Volcano which means that the source of activity is hydrothermal and shallow
- The public is strongly advised not to enter inside the 4-kilometer radius Permanent Danger Zone (PDZ) as it may be affected by sudden steam and ash explosions.
- People residing near valleys and river/streams are also strongly advised to be vigilant against sediment-laden stream flows in the event of heavy and prolonged rainfall.
- 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 advise pilots to avoid flying close to the volcano's summit as ejected ash and volcanic fragments from sudden explosions may pose hazards to aircrafts.