The southwest monsoon may bring intense rainfall in Zambales and drench almost the entire country in the next 24 hours, posing a risk of flooding and landslides, especially in high-risk areas, according to the state weather bureau on Thursday.
Rainfall in Zambales may range between 100 to 200 millimeters (mm), potentially causing numerous flooding events and landslides, the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) said in a 5:00 a.m. advisory.
Heavy downpours, or rainfall between 50 to 100 mm, are expected in 18 areas, including Pangasinan, La Union, Benguet, Isabela, Nueva Vizcaya, Quirino, Aurora, Bataan, Tarlac, Pampanga, and Nueva Ecija.
It is likewise expected in Bulacan, Metro Manila, Rizal, Cavite, Batangas, Oriental Mindoro, and Occidental Mindoro.
PAGASA warned of localized flooding and landslides, especially in the same high-risk areas.
The southwest monsoon will also cause thunderstorms in Visayas, the rest of Luzon, Zamboanga Peninsula, and Northern Mindanao, PAGASA said.
Generally fairer weather is expected in large parts of Mindanao, with a chance of localized thunderstorms.
PAGASA is not monitoring any tropical cyclones, but a low-pressure area is expected to develop in the next few days, which may weaken the effects of the southwest monsoon by the weekend. — Edg Adrian A. Eva
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