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MAYON VOLCANO BULLETIN 28 June 2011 8:00 A.M. PDF Print
Monday, 27 June 2011 22:21

Mayon Volcano’s (13.2500°N, 123.6833°E) seismic network detected one (1) volcanic earthquake during the past 24 hours. Weak steaming activity was observed from the crater. Night observation was not possible due to thick clouds covering the summit. Yesterday’s measurement of sulphur dioxide (SO2) emission rate yielded an average value of 144 tonnes per day. Results of ground deformation measurement (precise leveling) conducted last 31 May 2011 to 04 June 2011 showed slight inflation of the volcano’s edifice as compared with 06-10 March survey.

 

Alert Level 1 remains 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.

 

 

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