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This is to notify all concerned authorities and the public on recent activity at Bulusan Volcano. In the last 24-hour observation period, the Bulusan Volcano Network recorded five (5) volcanic earthquakes. In view of the possibility of sudden steam-driven or phreatic explosion from the summit crater or from vents on the Bulusan upper slopes, DOST-PHIVOLCS strongly reminds the public and local government units that the 4-kilometer radius Permanent Danger Zone (PDZ) should be avoided at all times as a precaution. In particular, all treks to the summit must be avoided due to the increased risk of phreatic activity. DOST-PHIVOLCS is keeping close watch and evaluating the status of the volcano and will inform all concerned of any further developments.

 

DOST-PHIVOLCS  

00 volcano icon for bulletin DOST-PHIVOLCS is currently monitoring an ongoing series of earthquakes on the west lower flanks of Kanlaon Volcano. This began at June 21, 2020 at 04:03 PM, with the largest registering at M4.7 at June 22, 2020, 01:15 AM this morning and was felt at Intensity V at La Carlota City. As of 01:50 AM, a total of 81 events have been recorded. DOST-PHIVOLCS would like to assure the public especially the local communities in Negros Island that we are keeping close watch and shall inform all concerned of any further developments.

 

DOST-PHIVOLCS

00 volcano icon for bulletin This is to notify the public and concerned authorities on the current activity of Mayon Volcano.

Since the end of magmatic eruption in March 2018, Mayon Volcano has exhibited declining earthquake activity and SO2 emission; however, a slight swelling or inflation of the edifice began in February 2019 based on continuous GPS and electronic tilt monitoring. These observations indicate that Mayon’s recent behavior has been mainly driven by changes occurring within magma already emplaced beneath the edifice rather than by renewed magma intrusion events. In the past two days, crater glow has been detected at the summit crater that is likely caused by hot magmatic gases heating the overlying atmosphere. This suggests the possibility that remnant magma may be quietly rising to the shallow levels of the edifice.

           

DOST-PHIVOLCS reiterates that Alert Level 2 still currently prevails over Mayon because the volcano is still at a moderate level of unrest. It is therefore strongly recommended 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, should be strictly prohibited. The public is reminded that sudden explosions, lava collapse, pyroclastic density currents or PDCs and ashfall can occur without warning and threaten areas in the upper to middle slopes of Mayon. People residing close to these danger areas are also advised to observe precautions against rockfalls, PDCs and ashfall. Active stream/river channels and those identified as perennially lahar-prone areas on all sectors of the volcano should also be avoided especially during extreme weather conditions when there is heavy and prolonged rainfall. Civil aviation authorities must advise pilots to avoid flying close to the volcano’s summit as airborne ash and ballistic fragments from sudden explosions and PDCs may pose hazards to aircraft.

DOST-PHIVOLCS is closely monitoring Mayon Volcano’s condition and any new development will be relayed to all concerned.

DOST-PHIVOLCS

00 volcano icon for bulletin  Based on its Severe Weather Bulletin # 8 issued at 11:00 AM today (May 13, 2020), the Philippine Atmospheric Geophysical and Astronomical Services Administration (PAGASA) forecasts that Albay will be experiencing moderate to heavy rains tomorrow, 14 May 2020, due to Tropical Storm “AMBO”.

Due to this development, DOST-PHIVOLCS strongly recommends increased vigilance and readiness of communities in pre-determined zones of lahar hazards in Mayon Volcano. Prolonged and heavy rainfall may generate post-eruption lahars on major channels draining the Mayon Volcano edifice by incorporating loose material from thick pyroclastic density current (PDC) deposits and remnant ashfall from the January-March 2018 eruption. The bulk of erodible PDC deposits occupy the watershed areas of the Miisi, Mabinit, Buyuan and Basud Channels. In addition, older and erodible eruption deposits occupy the watershed areas on the eastern and western slopes of the edifice and can be remobilized as non-eruption lahars by erosion of banks and channel beds.  Mayon lahars can threaten communities along the middle and lower slopes and downstream of these channels with inundation, burial and wash away.

DOST-PHIVOLCS, therefore, warns of potential lahars and sediment-laden streamflows on all river channels draining the slopes of Mayon Volcano, particularly the Miisi, Binaan, Anoling, Quirangay, Maninila, Masarawag, Muladbucad, Nasisi, Mabinit, Matan-ag, and Basud Channels, that may be generated by heavy rainfall brought about by Tropical Storm “AMBO”. Communities and local government units beside these drainages are advised to be additionally vigilant and to move residents to high ground should heavy rains occur.

 

 

DOST-PHIVOLCS

Based on its Severe Weather Bulletin # 8 issued at 8:00 AM today (December 24, 2019), the Philippine Atmospheric Geophysical and Astronomical Services Administration (PAGASA) forecasts that Albay will be experiencing light to moderate with intermittent heavy rains between today and tomorrow noon due to Severe Tropical Storm “URSULA”.

In view of the above, DOST-PHIVOLCS strongly recommends vigilance and readiness of communities in pre-determined zones of lahar hazards in Mayon Volcano. Prolonged and heavy rainfall may generate post-eruption lahars on major channels draining the Mayon Volcano edifice from thick pyroclastic density current (PDC) material and ashfall deposited during the January-March 2018 Mayon eruption. The bulk of erodible PDC deposits occupy the watershed areas of the Miisi, Mabinit, Buyuan and Basud channels. These deposits can be remobilized by rainwater and incorporate existing erodible material on channel banks and channel beds to generate boulder-rich or sediment-rich lahars.

DOST-PHIVOLCS therefore warns of potential lahars and sediment-laden streamflows on all river channels draining the slopes of Mayon Volcano, particularly the Mi-isi, Binaan, Anoling, Quirangay, Maninila, Masarawag, Muladbucad, Nasisi, Mabinit, Matan-ag, and Basud River Channels, that may be generated by heavy rainfall brought about by Severe Tropical Storm “URSULA”. Communities and local government units beside these drainages are advised to be additionally vigilant and to move residents to high ground when heavy rains occur.

 

 

DOST-PHIVOLCS

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