Phivolcs reports increase in Kanlaon’s seismic activity

The Philippine Institute for Volcanology and Seismology reported increased activity for Kanlaon Volcano in its 24-hour observation on Sunday, October 5, 2025. — Photo from Phivolcs/Facebook

MANILA, Philippines — Kanlaon Volcano logged an increase in seismic activity on Saturday, based on the 24-hour monitoring of the Philippine Institute of Volcanology and Seismology (Phivolcs).

Phivolcs’ Sunday bulletin said that Kanlaon Volcano recorded 65 volcanic earthquakes, a sharp increase from Saturday’s 11. The volcano also emitted 1,805 tons of sulfur dioxide, which is a slight increase from Saturday’s 1,531 tons.

READ: Phivolcs identifies fault that caused magnitude 6.9 quake in Cebu

Aside from this, Phivolcs said that the volcano generated a plume that rose 650 meters tall that drifted west-northwestward and northwestward.

The state seismologist also observed that the volcano’s edifice is still inflated.

The volcano, which sits between Negros Oriental and Negros Occidental, remains under Alert Level 2 or increased unrest.

READ: Phivolcs says Cebu quake generated over 5,000 aftershocks

The agency still prohibits entry into the four-kilometer radius, or the permanent danger zone. Flying any aircraft close to the volcano is also not allowed.

It also reminded nearby communities that possible hazards such as sudden steam-driven or phreatic eruptions and precursor magmatic activity might occur. /das