The volcano in the southeastern end of the main Luzon island has been on a low-level unrest since Monday.
In its advisory at 8:03 pm on Tuesday, April 29, the Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that another eruption occurred at Mt. Bulusan in Sorsogon.
The said activity did not last long, as at 9:00 pm, the next update from the state volcanology bureau indicated that the eruption had ended.
This movement happened a day after the phreatic eruption that occurred at the summit of Bulusan early Monday morning, at 4:36 am.
During which, a bent plume rose 4,500 meters above the crater, resulting to an ashfall in several towns in the Sorsogon province.
In view of this situation, PHIVOLCS raised the alert status at Mt. Bulusan from level 0 to level 1, signifying that the volcano is currently in a state of “low-level unrest with chances of phreatic eruptions” succeeding the April 28 event.
The agency also implemented the prohibition of entry inside the 4-kilometer radius Permanent Danger Zone (PDZ) and vigilance in the extended PDZ inside the 2-kilometer radius beyond the initial area.
This is due to the impact of several hazards, including PDCs, ballistic projectiles, rockfall, and avalanches, and ashfall.
Aside from Bulusan, there are monitored activities in other volcanoes Taal and Mayon, both under Alert Level 1, and Kanlaon, where Alert Level 3 is hoisted over.