Philippines, Bulusan Volcano Eruption (Region V)

On 28 April 2025 at 04:36 AM, a phreatic eruption occurred from the summit crater of Bulusan Volcano and lasted 24 minutes based on seismic and infrasound records. The incident produced a bent plume that rose 4,500 meters above the crater before drifting west to southwest. Ashfall was reported in Brgys. Cogon and Bolos, Irosin, Brgys. Puting Sapa, Guruyan, and Buraburan, Juban, and Brgy. Tulatula Sur, Magallanes, Sorsogon Province. A pyroclastic density current (PDC) or “uson” descended the southwestern slopes and travelled within three (3) kilometers from the summit vent. Prior to the eruption, a total of fifty-three (53) volcanic earthquakes were recorded over the 24-hour period yesterday. Rumbling sounds were reported by local government officials approximately 15 minutes before the eruption and were recorded by infrasound sensors.



Alert Level 1 status is now raised over Bulusan Volcano, which means that the volcano is currently in a state of low-level unrest with chances of phreatic eruptions succeeding this morning’s event.