Shear Line, Easterlies, Amihan: Filipinos Face a Cloudy Start to the Week

  • Share this:
post-title

The Philippines wakes under a blanket of clouds on Monday, as three distinct weather systems converge to shape the country’s skies, PAGASA reported in its 4 a.m. forecast. 

Most regions can expect cloudy conditions accompanied by scattered rain showers and occasional thunderstorms, signaling a damp start to the week.

In northern Luzon, a shear line stretches across the eastern provinces, bringing scattered rains and isolated thunderstorms specifically to Cagayan and Isabela. 

Residents in these areas may experience intermittent downpours and sudden bursts of heavy rain, though PAGASA noted that these are not part of a larger storm system.

Elsewhere, easterlies influence the central and southern portions of the country, including Aurora, Quezon, and Metro Manila. 

These wind patterns are producing scattered showers that may appear at various times throughout the day, contributing to cooler temperatures and occasional wet spells for commuters and outdoor activities.

Further north, the northeast monsoon, locally known as “amihan,” continues to affect extreme northern Luzon. 

This weather system brings partly cloudy to cloudy skies with isolated light rains in Ilocos Norte, Apayao, Batanes, and the Babuyan Islands. 

The amihan typically ushers in cooler, drier air, but can also produce light drizzles along coastal and elevated areas, particularly in the early morning and late afternoon.

PAGASA emphasized that, at present, there are no low-pressure areas being monitored for potential tropical cyclone formation. 

This means that while rain and thunderstorms are expected in certain regions, no significant storm systems are forecast to develop that would pose widespread hazards.

City and municipal authorities in affected provinces are expected to continue monitoring local drainage systems and flood-prone areas, especially in communities where heavy rains often lead to flash floods or waterlogging. 

Residents are advised to keep an eye on weather updates throughout the day, particularly in areas under the shear line and easterlies.

With three separate weather systems simultaneously affecting different parts of the country, Monday’s forecast serves as a reminder of the Philippines’ complex weather patterns and the importance of preparedness, even when no major tropical cyclones are present.

Photo from DOST-PAGASA