|MAYON VOLCANO BULLETIN 12 February 2011 8:00 A.M.|
|Friday, 11 February 2011 23:55|
Seismic network at Mayon Volcano (13.2576°N, 123.6856°E) detected one (1) volcanic earthquake and four (4) rockfall events during the past 24 hours. Steaming activity varied from weak to moderate emission of white steam drifting towards the WNW direction. Fair crater glow (Intensity II- seen by naked eye) was observed last night. Results of ground deformation survey conducted on 02-03 February 2011 showed that the volcanic edifice remained inflated based from 2007 baseline data (Lidong Precise Leveling Line).
Alert Level 1is in effect over Mayon Volcano. While this means 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 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 and any new development will be relayed to all concerned.