The Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) has released its latest heavy rainfall outlook as Tropical Cyclone Basyang continues to influence weather conditions across several parts of the country. The state weather bureau warned that widespread rainfall may trigger flooding and landslides, particularly in areas expected to receive intense precipitation over the next few days.
According to PAGASA, several provinces are forecast to experience extremely heavy rainfall today, with accumulated precipitation expected to exceed 200 millimeters. These areas include Cebu, Negros Oriental, Bohol, Siquijor, Surigao del Norte, Dinagat Islands, Agusan del Norte, Misamis Oriental, and Camiguin. Residents in these locations are advised to remain alert as heavy downpours may cause rapid rises in water levels and pose risks to communities located near rivers and low-lying areas.
Meanwhile, rainfall amounts ranging from 100 to 200 millimeters are expected in Palawan, Negros Occidental, Southern Leyte, Leyte, Antique, Iloilo, Guimaras, Agusan del Sur, Surigao del Sur, Misamis Occidental, Lanao del Norte, Lanao del Sur, Bukidnon, Davao del Norte, Davao de Oro, Davao Oriental, and Zamboanga del Norte. These areas may also experience flooding, especially in regions that have already received significant rainfall in recent days.
Moderate to heavy rainfall, estimated between 50 and 100 millimeters, is expected in Eastern Samar, Aklan, Capiz, Zamboanga del Sur, Zamboanga Sibugay, Maguindanao del Norte, Cotabato, and Davao del Sur. PAGASA emphasized that rainfall may be heavier in mountainous and elevated terrain, where runoff and landslides are more likely to occur.
For tomorrow, Palawan remains under the forecast for moderate to heavy rainfall due to Basyang. Additionally, the shear line is expected to bring moderate to heavy rainfall to Quezon, Oriental Mindoro, Marinduque, and Camarines Norte. Similar weather conditions are forecast to persist on Sunday, particularly in Isabela, Aurora, Quezon, Oriental Mindoro, and Camarines Norte.
PAGASA also noted that previous rainfall may worsen the potential impacts of incoming weather disturbances. The agency urged local disaster risk reduction and management offices to take proactive measures to safeguard lives and properties. Residents are encouraged to monitor official updates and follow instructions from local authorities.
The weather bureau clarified that a Heavy Rainfall Warning differs from a Weather Advisory in terms of coverage and accuracy. Heavy Rainfall Warnings provide highly localized forecasts for the next three hours and use Doppler radar technology to track rainfall intensity in real time, making them crucial for immediate disaster response planning.