The Southwest Monsoon, or habagat, will bring cloudy skies and rain over parts of Luzon on Friday, August 4.
According to PAGASA, Pangasinan, Zambales, and Bataan will have occasional rains due to the Southwest Monsoon, adding that flooding or landslides in these areas may occur due to moderate to heavy rains.
The Cordillera Administrative Region (CAR), Batanes, Babuyan Islands, Occidental Mindoro, and the rest of Ilocos Region and Central Luzon will have cloudy skies with scattered rain showers and thunderstorms due to habagat, with the possibility of flash floods or landslides occurring due to moderate to at times heavy rains.
The weather bureau also noted that Metro Manila and the rest of the country may experience partly cloudy to cloudy skies with isolated rain showers or thunderstorms due to the southwest monsoon and localized thunderstorms with flash floods or landslides occurring during severe thunderstorms.
Strong winds with a southwesterly direction are predicted for Luzon along with coastal waters.
Visayas will have moderate to strong wind speeds moving southwestward with moderate to rough coastal waters.
Mindanao will have light to moderate winds coming from the south to southwest and light to moderate seas along the shore.
PAGASA is currently monitoring a tropical storm that is active but outside the Philippine Area of Responsibility (PAR).
Based on PAGASA's latest bulletin issued at 3AM, Typhoon Khanun (formerly known as Falcon) was seen 715 kilometers north-northeast of Itbayat, Batanes, with maximum winds of 130 km/h in the center and gustiness up to 160 km/h moving virtually still.

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Habagat to bring occasional rain over Pangasinan, Zambales, Bataan — PAGASA