|MAYON VOLCANO BULLETIN 31 May 2011 8:00 A.M.|
|Monday, 30 May 2011 23:07|
Mayon Volcano’s (13.2500°N, 123.6833°E) seismic network recorded one (1) volcanic earthquake and one (1) rockfall related event during the past 24 hours. Steaming activity at the crater was moderate with white steam clouds creeping down slope towards northeast. Fair crater glow (Intensity II - can be seen by the naked eye) was observed last night. Results of ground deformation measurement (precise leveling) conducted last 07-11 May, 2011 showed slight inflation of the volcano’s edifice as compared with 06-10 March survey.
Alert Level 1 is in effect over Mayon Volcano. Although this means that no eruption is imminent, it is recommended that the public should not enter the 6-kilometer radius Permanent Danger Zone (PDZ) due to the continuing threat from sudden small explosions and rockfalls from the upper and middle slopes of the volcano. Active stream/river channels and those perennially identified as lahar prone areas in the southern sector should also be avoided especially during bad weather conditions or when there is heavy and prolonged rainfall. DOST-PHIVOLCS is closely monitoring Mayon Volcano’s activity and any new development will be relayed to all concerned.