Sudden increase in volcanic earthquakes triggers Alert Level 1 for Bulusan volcano, Philippines
On October 25, 2023, the Philippine Institute of Volcanology and Seismology (PHIVOLCS) raised the alert status of Bulusan Volcano from Alert Level 0 to Alert Level 1 due to a period of low-level unrest that began on October 14, 2023. This includes a series of 121 volcanic earthquakes and signs of ground deformation.