STATE weather bureau PAGASA issued an advisory at 11:00 a.m. on August 29, 2026, warning of continued heavy rainfall across wide swaths of Northern and Central Luzon due to the enhanced Southwest Monsoon or Habagat.
From Saturday through Sunday noon (August 30), areas including Ilocos Sur, Pangasinan, La Union, Benguet, Bataan, Zambales, Tarlac, and Pampanga can expect between 100 to 200 millimeters of rain. Meanwhile, 50 to 100 millimeters may fall over Ilocos Norte, Abra, Apayao, Kalinga, Ifugao, Mountain Province, Nueva Vizcaya, Nueva Ecija, Bulacan, Metro Manila, Rizal, Cavite, Laguna, Batangas, and the two Mindoro provinces.
The heavy rains are forecast to persist and expand through Sunday noon to Monday noon (August 31), with the heaviest rainfall — 100–200 mm — shifting to Ilocos Norte, Ilocos Sur, La Union, Pangasinan, Abra, Benguet, Zambales, and Bataan. Another belt of 50–100 mm will cover Apayao, Kalinga, Ifugao, Mountain Province, Nueva Vizcaya, Tarlac, Nueva Ecija, Pampanga, Bulacan, Metro Manila, Rizal, Cavite, and Batangas. The monsoon is expected to remain strong through Monday noon to Tuesday noon (September 1), continuing to dump 100–200 mm over the Ilocos region, Abra, Benguet, and Zambales, while 50–100 mm spreads across Batanes and the rest of the Luzon interior and western lowlands.
PAGASA cautioned that actual rainfall could be significantly higher in mountainous and elevated areas, and the risk of flooding and landslides is further compounded by already saturated ground from days of antecedent rains. Local government units and disaster risk reduction offices have been urged to take all necessary precautions to protect lives and property, activate early warning systems, and prepare for possible evacuations. Residents in low‑lying and slope‑side areas are advised to remain vigilant and heed immediate warnings from local authorities.
The bureau also clarified the distinction between a Heavy Rainfall Warning and a Weather Advisory to guide public action. Heavy Rainfall Warnings are precise, three‑hour, municipal‑level forecasts based on Doppler radar data — the primary reference for class suspensions and immediate decisions. Weather Advisories, by contrast, provide broader 24‑hour outlook at the provincial level.
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