The northeasterly surface wind flow prevailing over extreme northern Luzon may bring cloudy skies with light rains over Batanes and Babuyan Islands in the next 24 hours, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said on Monday, Oct. 18.
Partly cloudy to cloudy skies with isolated rain showers or thunderstorms may also persist over Metro Manila and the rest of the country due to the northeasterly surface wind flow and localized thunderstorms.
The prevalence of northeasterly surface wind flow and afternoon or evening thunderstorms means that the country is currently in the transition period towards the northeast monsoon or "amihan."
The northeast monsoon season in the country begins around late October to early November.
Meanwhile, PAGASA has issued a gale warning on Monday morning due to strong to gale-force winds associated with the northeasterly surface wind flow.
Rough to very rough seas may prevail over the northern seaboard of Luzon and the eastern and western seaboards of northern Luzon.
"Fishing boats and other small seacraft are advised not to venture out into the sea, while larger sea vessels are alerted against big waves," PAGASA said.