The low pressure area (LPA) east of Sorsogon will bring scattered rain showers and thunderstorms over parts of Luzon and the entire Visayas, said the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said on Saturday, Dec. 10.
PAGASA last spotted the LPA 215 kilometers east of Juban, Sorsogon at 3 a.m.
“This weather disturbance has a high likelihood of developing into a tropical depression within 12 to 24 hours,” it said.
When it becomes a tropical depression, it will be given the local name “Rosal.” It will be the 18th tropical cyclone for 2022 and first for December.
PAGASA said cloudy weather with scattered light to heavy rains may prevail over Metro Manila, Cavite, Laguna, Batangas, Rizal, Quezon, Oriental Mindoro, Occidental Mindoro, Marinduque, Romblon, Palawan, Central Luzon, Bicol Region, and Visayas.
“Under these conditions, flooding, and rain-induced landslides are possible, especially in areas that are highly or very highly susceptible to these hazards as identified in hazard maps and in areas with significant antecedent rainfall,” it warned.
PAGASA also said that cloudy weather with scattered rain showers and thunderstorms may prevail over Cagayan Valley due to the shear line—a boundary line where the cold and warm air masses meet.
Those in Cagayan Valley are advised to remain vigilant in case of moderate to heavy rains, as it may trigger flash floods or landslides.
The rest of the country will be partly cloudy to cloudy with isolated rain showers or thunderstorms due to the shear line or localized thunderstorms.
However, PAGASA advised the public to remain vigilant as severe thunderstorms may also cause flash floods or landslides, especially in areas prone to these hazards.