Luzon and Western Visayas will be drenched in the next five days because the southwest monsoon will spawn more heavy rains, the weather bureau said.
The Philippine Atmospheric, Geophysical and Astronomical Services Administration said monsoon rains will continue to pound Metro Manila, Zambales, Bataan, Pampanga, Pangasinan, Nueva Ecija, Tarlac, Bulacan, Rizal, Cavite, Laguna, and Batangas.
Residents in these areas should watch out for flashfloods and landslides.
The weather bureau said the Ilocos region, Cordillera Administrative Region (CAR), the rest of Central Luzon and MIMAROPA will have occasional rains. Coastal waters will be moderate to rough.
Torrential rains flooded many areas in Metro Manila and some towns in Luzon Saturday as a low pressure area (LPA) and a tropical depression outside the Philippine Area of Responsibility (PAR) enhanced the southwest monsoon.
At least 19 flights were diverted to Clark International Airport from the Ninoy Aquino International Airport (NAIA) because of the bad weather.
A Cebu Pacific flight from Tacloban City and an Etihad Airlines flight from Abu Dhabi landed at the Clark airport and passengers were provided transportation to Metro Manila.
Other flights that were diverted to Clark were Cebu Pacific flights from Tagbilaran, Vigan, Cebu, El Nido, Dipolog, Caticlan, Mactan and Bacolod.
A Cathay Pacific flight from Hong Kong, Zest Air flight from Tagbilaran, Airphil flight from Iloilo, Kuwait Airways flight from Kuwait, Emirates Airline flight from Dubai, Philippine Airlines flight from Honolulu, ITI Air flight from Taiwan, China Southern flight from Gungzhou, and Singapore Airline flight from Singapore also landed in Clark.
Manila International Airport Authority (MIAA) media affairs division assistant head Jess Martinez said they had to divert flights because of poor runway visibility in Manila.