Based on its Severe Weather Bulletin # 8 issued at 8:00 AM today (December 24, 2019), the Philippine Atmospheric Geophysical and Astronomical Services Administration (PAGASA) forecasts that Sorsogon will be experiencing occasional to frequent heavy rains between today and tomorrow noon due to Severe Tropical Storm “URSULA”.

In view of the above, DOST-PHIVOLCS strongly recommends vigilance and readiness of communities in pre-determined zones of lahar hazards in Bulusan Volcano. Prolonged and heavy rainfall may cause excessive erosion of existing pyroclastic deposits in the upper slopes of Bulusan Volcano, which can trigger lahars in rivers draining the southeastern, southwestern and northwestern flanks. Potential lahars can threaten downstream communities along the Malunoy (Patag), Mapaso, Cadac-an, Tinampo and Cogon Rivers in Irosin and the Añog-Rangas River in Juban.

DOST-PHIVOLCS