The shear line or tail-end of frontal system may continue to bring light to moderate with at times heavy rains over Northern Samar and Bicol Region in the next couple of hours, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said Wednesday afternoon, Nov. 10.

"Under these conditions, flash 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," PAGASA said.

Shear line is a region where the northeasterly and easterly winds converge and form rain clouds.

Moreover, PAGASA said the northeast monsoon or "amihan" may bring light rains over Cagayan Valley, while Metro Manila and the rest of Luzon will have partly cloudy to cloudy skies with isolated light monsoon rains.

A gale warning is currently in effect due to strong to gale-force winds associated with the northeast monsoon, causing rough to very rough seas over the seaboards of northern Luzon, particularly over the seas of Batanes, Ilocos Norte, Cagayan, and Babuyan Islands.

PAGASA said fishing boats and other small seacrafts should not venture out into the sea while larger sea vessels should watch out for big waves.

Meanwhile, partly cloudy to cloudy skies with isolated rain showers or thunderstorms may persist over Mindanao and the rest of Visayas.

The public should stay vigilant against possible flash floods or landslides during the occurrence of severe thunderstorms that is often accompanied by short-lived heavy rains.