Rainy Christmas Day to prevail in Luzon due to shear line, amihan

Satellite image as of Wednesday, December 25, 2024 at 6:30 a.m. (Photo courtesy of Pagasa)

MANILA, Philippines — Rainy Christmas Day will prevail in Luzon due to the shear line and northeast monsoon, or “amihan,” the state weather bureau said on Wednesday.

In the 4 a.m. weather forecast of the Philippine Atmospheric, Geophysical and Astronomical Services Administration, weather specialist Aldczar Aurelio said the shear line will dump rains in Southern Luzon while most parts of Luzon will experience rain due to the northeast monsoon.

The shear line is caused by the convergence of warm and cold winds.

READ: Shear line, amihan to bring Christmas Day rain in Luzon

Aurelio also noted that no low-pressure area or tropical cyclone is developing inside the Philippine Area of Responsibility and in parts of the Pacific Ocean.

“Kalat-kalat na pag-ulan at thunderstorm ang mararanasan dito sa Metro Manila, ganoon din sa Cagayan Valley, Cordillera, Central Luzon, Calabarzon [Cavite, Laguna, Batangas, Rizal, and Quezon], ganoon din sa Bicol region, pati sa lalawigan ng Marinduque, Romblon, Oriental Mindoro, Occidental Mindoro, kasama na rin ang Eastern Visayas,” said Aurelio.

(Scattered rains and thunderstorms will prevail in Metro Manila, Cagayan Valley, Cordillera [Administrative Region], Central Luzon, Calabarzon, Bicol region, Marinduque, Romblon, Oriental Mindoro, Occidental Mindoro, and Eastern Visayas.)

“Sa nalalabing bahagi ng ating bansa ay makararanas ng medyo magandang panahon kung saan magiging bahagyang maulap hanggang sa maulap ang kalangitan maliban sa mga isolated na pag-ulan dulot ng thunderstorm,” he added.

(The rest of the country will experience slightly fair weather where partly cloudy to cloudy skies and isolated rain showers due to thunderstorms are possible.)

READ: Downpours forecast in Luzon, Visayas on Christmas Eve, Christmas Day

Meanwhile, a gale warning due to the northeast monsoon is raised over the coastal waters of the following areas:

• Batanes
• Cagayan, including Babuyan Islands
• Isabela
• The northern and western coasts of Ilocos Norte

Aurelio warned against sailing in these coastal waters where 3.1 to 4.5 meters of waves are likely to occur.