Mayon Volcano Bulletin

This is a notice for the lowering of the alert status of Mayon from Alert Level 3 to Alert Level 2.
Since the last recorded seismic swarm on 29 November 2014, a general decline in the overall activity of Mayon Volcano has been observed, as indicated by the following monitored parameters:

Volcanic Earthquake Activity: For nearly the past three weeks, seismic activity has declined to an average 2-3 mostly volcano-tectonic earthquakes daily that are attributed to rock fracturing beneath the northern flank of the edifice. There have been even lesser low frequency earthquakes associated with magma or volcanic gas movement recorded, while few minor rockfall events detected were more likely enhanced by intense rainfall over the volcano summit rather than by lava extrusion at the crater. Such overall low-level seismicity indicates that there is currently no active transport of eruptible magma to the shallow levels of the volcano.

Ground Deformation: Since June 2014, Mayon’s edifice has been inflating or swelling due to very slow intrusion of subsurface magma beneath the northern flank of the edifice, based on Precise Leveling (PL) surveys and continuous electronic tilt measurements. Distinct short-term increases in edifice inflation in October 2014 notably preceded episodes of short lava flow from the summit crater on 12 and 19 October. However, short-term increase in edifice inflation recorded by PL surveys in the last week of November 2014 was not succeeded by lava extrusion. Although the volume of yet unerupted magma accumulated beneath the volcano since June 2014 is in the order of 107 m3 based on ground deformation data, intrusion to shallow levels has not occurred in nearly three weeks, based on stationary tilt data for the corresponding period.

Gas Emission: Sulfur Dioxide emission or SO2 flux from Mayon crater has declined since 2 October to below 500 tonnes/day, which is the baseline value during quiescence. SO2 flux levels have decreased from a high of 2,360 t/d on 6 September, with the latest flux measured on 9 December at 259 t/d. The low levels of SO2 flux indicate that shallow magma degassing has declined, due to either the progressive loss of volcanic gas from shallow magma, or the generally low volcanic gas content of magma intruded at deeper levels beneath the edifice, or both.

Visual Observation of the Summit: Since the last observation of lava flow on 19 October, no new lava material has been observed at Mayon’s summit crater. Crater glow, which is incandescence associated with superheated gas emission at the summit vent, has not been observed since 28 November. The decline in observable parameters at the summit is consistent with the cessation of magma supply to the shallow levels of the volcanic edifice.

In view of the above, PHIVOLCS-DOST is now lowering the alert status of Mayon from Alert Level 3 to Alert Level 2. This means that the likelihood of hazardous eruption within days to weeks has lessened. However, the lowering of the alert status should not be interpreted that the volcano’s unrest has ceased, considering that deeper beneath it eruptible magma has already accumulated. If there is a resurgence of volcanic unrest based on any one or combination of the above monitoring parameters, the alert status may step up to Alert Level 3 again. On the other hand, if there is a noticeable return to baseline levels of ground deformation and sustained low levels of other parameters, then the Alert Level may further step down. The public is still reminded to avoid entry into the 6-km Permanent Danger Zone or PDZ due to perennial hazards of rockfalls, avalanche, ash puffs and sudden steam-driven or phreatic eruptions at the summit area. Furthermore, people living in valleys and active river channels are cautioned to remain vigilant against sediment-laden streamflows and lahars in the event of prolonged and heavy rainfall. PHIVOLCS-DOST is closely monitoring Mayon Volcano’s activity and any new development will be immediately posted to all concerned.

Karangahan Green Christmas Festival 2014 Formally Opened


After a few setbacks, owing to the threat of Supertyphoon Ruby and the looming dangers of a Mayon Volcano eruption, the Karangahan Green Christmas Festival 2014 was finally declared open last December 13, 2014.

Although the Karangahan Festival had a soft opening three days prior, the formal opening was set on Saturday and was even marred by heavy rains which prompted the open air activities to the covered venue of nearby Albay Astrodome after the ceremonial lighting of the giant Christmas tree.

Stunning and elegant, this year’s edition, the fifth of its kind, once again featured a one of a kind organic tree made out of young camote plants, to symbolize not only the advocacy of environmentalism by the Provincial Government of Albay, but also the living dream of liberating the poor from hunger.

Governor Joey Sarte Salceda, who was tied up in his awarding ceremony for his Outstanding Alumni award from His Alma Mater, Ateneo de Manila, said in his message, delivered by Vice Governor Harold Imperial, that the Karangahan Green Christmas Festival is a joyful celebration that hopes to bring the spirit of Christmas to our province mates who remain here or who could not be with their loved ones elsewhere.

Governor Salceda also expressed dismay of losing the chance to host the APEC ISOM to the threat of a devastating typhoon but articulated that we simply have to move on, accept it, and to focus instead in the joyful celebration of the people’s resilience and strength.

“True to the needs of the world today, we are celebrating a green Christmas, green is the color of growth, it’s the color of hope, and green is clean,” he further stated.

Following the theme of the festivities, stall owners and producers were encouraged to deliver products made from indigenous green abaka while food being offered in the food stalls of the Culinaria Albay grounds would be made from indigenous green crops, fruits, and vegetables,

After the formal opening, attendees of the ceremony were entertained by comedian Neggi soliciting guffaws from the amused crowd, followed by shrieks and thunderous clapping when up and coming celebrity, Inigo Pascual took center stage. (PGA-PIO/December 15, 2014)

PDRRMC Advisory 6 | Typhoon Ruby

PDRRMC Advisory no. 6
December 8, 2014

In view of the improving weather condition today, the PDRRMC hereby orders the LIFTING of the suspension of classes and school outdoor activities per PDRRMC Advisory no. 2 in the entire province dated December 4, 2014, therefore all classes resume tomorrow December 9, 2014.

So ordered.

JOEY SARTE SALCEDA
Governor and PDRRMC Chairman

PDRRMC Advisory 5 | Typhoon Ruby

PDRRMC Advisory No. 5

1) Decamp but avoid flooded routes.
2) Class suspensions are maintained. As consulted with DepEd Superintendent Bibz Sentillas
3) Back to work everyone.
4) Notifying APEC SMEC to lift isolation-driven power curtailment.
5) Karangahan opening to be adjusted further to Dec. 10.