Bulusan Volcano, located in Sorsogon, Philippines, has exhibited increased seismic activity, prompting the Philippine Institute of Volcanology and Seismology (Phivolcs) to issue an advisory. Since May 18, a total of 442 volcano-tectonic earthquakes have been recorded, with 55 of these occurring at depths of less than 5 kilometers beneath the volcano. The degassing activity is currently categorized as 'very weak to moderate,' with an emission rate measured at 121 tonnes per day. Ground deformation data indicates inflation of the volcano's northern and upper western slopes, suggesting slow pressurization due to hydrothermal or tectonic processes. As a result, Alert Level 1 (indicating low-level unrest) remains in effect, which raises the likelihood of phreatic eruptions. Entry into the four-kilometer radius permanent danger zone is prohibited, and local communities are urged to remain vigilant, particularly in the two-kilometer extended danger zone. Residents are advised to prepare for potential ashfall and lahar flows, especially those living near river channels.