PHIVOLCS-DOST: Mayon Volcano update as of 04 April, 2018 - PH Trending

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Wednesday 4 April 2018

PHIVOLCS-DOST: Mayon Volcano update as of 04 April, 2018

The PHIVOLCS had announced from Alert Level IV down to III and now at Level III the current condition of Mayon Volcano. DOST-PHIVOLCS recommends that entry into the six kilometer-radius Permanent Danger Zone or PDZ and a precautionary seven kilometer-radius Extended Danger Zone or EDZ in the south-southwest to east-northeast sector, stretching from Anoling, Camalig to Sta. Misericordia, Sto. Domingo, must be strictly prohibited. People residing close to these danger areas are also advised to observe precautions associated with rockfalls, PDCs and ashfall.  


Summary | Mayon Volcano’s seismic monitoring network did not detect any volcanic earthquakes during the past 24 hours. Weak to moderate emission of white steam-laden plumes that rose up to 500 meters before drifting west-northwest and southwest occurred throughout the day. Fair crater glow from the summit could be observed at night. Sulfur dioxide (SO2) emission was measured at an average of 991 tonnes/day on 02 April 2018. Medium-term deflation has been recorded by electronic tiltmeter since 20 February 2018 despite short-term episodes of inflation at the lower and middle slopes. Precise leveling data obtained on 22-29 March 2018 indicate deflation of the edifice relative to the 10-19 March 2018 surveys. However, overall ground deformation data indicate that the edifice is still inflated relative to pre-eruption baselines.

Alert Level 2 currently prevails over Mayon Volcano. This means that Mayon is at a moderate level of unrest. DOST-PHIVOLCS reminds the public of sudden explosions, lava collapses, pyroclastic density currents or PDCs and ashfall can still occur and threaten areas in the upper to middle slopes of Mayon. 

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