On a related note:
Indonesia's Sinabung volcano erupts
"Sinabung, a 2,460-metre (8,070-foot) volcano, was dormant for centuries before roaring back to life in 2010 when an eruption killed two people.
After another period of inactivity, it erupted again in 2013 and has remained highly active since.
The following year an eruption killed at least 16 people, while seven died in a 2016 blast."
BULUSAN VOLCANO BULLETIN 11 May 2 21 7: P.M.
BULUSAN VOLCANO BULLETIN 11 May 2021 07:00 P.M.
This serves as a notice for raising the alert status of Bulusan Volcano from Alert Level 0 (Normal) to Alert Level 1 (Low-level Unrest).
Bulusan Volcano’s monitoring network has recorded a total of one hundred twenty-four (124) volcanic earthquakes since 08 May 2021. The increased seismicity could be followed by steam-driven or phreatic eruptions at the summit crater or from flank vents on the upper to middle slopes. Ground deformation data from real-time electronic tilt monitoring has been recording sustained inflation of the upper slopes that began 6 March 2021 consistent with short-term inflation of the edifice measured by continuous GPS monitoring since February 2021. These parameters indicate that volcanic processes are underway beneath the edifice that are likely caused by shallow hydrothermal activity.
Alert Level 1 (abnormal) status now prevails over Bulusan Volcano, which means that it is currently in an abnormal condition. Local government units and the public are reminded that entry into the 4-kilometer radius Permanent Danger Zone (PDZ) must be strictly prohibited and that vigilance in the 2-kilometer Extended Danger Zone (EDZ) on the southeast sector must be exercised due to the increased possibilities of sudden and hazardous phreatic eruptions. Civil aviation authorities must also advise pilots to avoid flying close to the volcano’s summit as ash from any sudden phreatic eruption can be hazardous to aircraft. Furthermore, people living within valleys and along river/stream channels especially on the southeast, southwest and northwest sector of the edifice should be vigilant against sediment-laden stream flows and lahars in the event of heavy and prolonged rainfall should phreatic eruption occur. DOST-PHIVOLCS is closely monitoring Bulusan Volcano’s condition and any new development will be communicated to all concerned stakeholders.