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Pagasa: Heavy Rainfall To Continue Due To Monsoon; Tropical Storm Peilou Being Monitored Outside PAR

Pagasa: Heavy Rainfall To Continue Due To Monsoon; Tropical Storm Peilou Being Monitored Outside PAR
Residents wade through floodwaters amid torrential rains brought by the enhanced southwest monsoon in Cainta, Rizal on Sunday, Aug. 9, 2026. Photo by Miguel de Guzman, The Philippine STAR

The Philippine Atmospheric, Geophysical and Astronomical Services Administration warned today, Aug. 10, that heavy rainfall will continue to be experienced in various parts of the country due to the southwest monsoon.

A tropical storm with international name Peilou is also being monitored outside the Philippine area of responsibility but is not expected to have a significant effect as it is moving away from the country, PAGASA said in its 5 a.m. advisory.

As of today, heavy rainfall outlook is issued over Benguet, Zambales, Bataan, Occidental Mindoro, Metro Manila, Ilocos Norte, Ilocos Sur, La Union, Abra, Pangasinan, Kalinga, Mountain Province, Ifugao, Nueva Vizcaya, Tarlac, Nueva Ecija, Pampanga, Bulacan, Rizal, Cavite, Batangas, Laguna and Oriental Mindoro.

Tomorrow, Aug. 11, Benguet, Zambales, Bataan, Occidental Mindoro, Ilocos Sur, La Union, Pangasinan, Batangas and Oriental Mindoro will still experience heavy rainfall.

On Wednesday, Aug. 12, forecast rainfall remains heavy for Zambales, Bataan, and Occidental Mindoro.

President Marcos has ordered agencies to undertake measures to ensure the safety of residents in areas affected by the southwest monsoon, Malacañang said yesterday.

Water levels rise in 9 dams

All nine dams being monitored by PAGASA have increased water level, figures showed on Sunday, Aug. 9.

Based on the dam information of PAGASA as of Sunday 8 a.m., Angat Dam’s level is now at 161.81 meters, a 2.92-m increase from the earlier day’s 158.89 m. However, this is still far from the 210 m normal high-water level of the dam.

Ambuklao Dam and Binga Dam are now at their exact normal high-water level at 752 m and 575 m, respectively. Both dams have opened their gates and released water as habagat continues to drench the Cordillera region.

Other dams have also increased their water levels, with San Roque Dam reaching the highest elevation, rising from 233.62 m to 239.72.

La Mesa Dam’s water level has increased from 79.37 m to 79.72 m, near the normal high-water level at 80.15 m, while Pantabangan Dam’s level has risen from 180.83 m to 181.46 m.

Magat Dam recorded an increase from 169.62 m to 170.73 m, while Caliraya Dam was raised from 286.75 m to 286.99 m.

In Bulacan, the Provincial Disaster Risk Reduction and Management Office reported that water level in Bustos Dam has reached 16.48 meters, which is above its spilling level of 16 meters. – With Ramon Efren Lazaro, Artemio Dumlao, Alexis Romero