The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) on Saturday, May 18, said that some parts of Luzon may experience cloudy skies with scattered rain showers and thunderstorms due to the shear line, which is the convergence of warm and cold air.

"Para naman sa magiging lagay ng ating panahon ngayong araw dito sa Luzon, dahil sa shear line, makaranas tayo ng maulap na papawirin na may mga kalat-kalat na pag ulan, pagkulog at kidlat sa mga areas ng Batanes at sa Babuyan Islands (For the weather today here in Luzon, due to the shearline, we will experience cloudy skies with scattered rain showers, thunderstorms, and lightning in the areas of Batanes and Babuyan Islands)," PAGASA Weather Specialist Daniel James Villamil said.

Meanwhile, in its latest update, the state weather bureau noted that Metro Manila and the rest of Luzon may experience fair weather conditions in the morning. However, by late afternoon to evening, there is a high chance of thunderstorm.

"So, let's still bring umbrellas because we may experience sudden and brief heavy rain showers later this afternoon until evening," Villamil said.

Also, in Metro Manila and the rest of the country, the easterlies, or winds coming from the Pacific Ocean, will have an effect.

"Therefore, we will continue to experience hot and humid weather from morning until noon, but from afternoon to evening, we might experience sudden and brief heavy rain showers," the weather specialist said.

Offshore thunderstorm activity

PAGASA urged the public to exercise caution if they are planning to set sail, as offshore thunderstorm activity can involve rain over coastal waters.

"We can expect strong winds along with a slight increase in wave height," he said.

"There are still no gale warnings raised for any coastal areas of our islands, and we can expect light to moderate sea conditions for the majority of our country," Villamil reported.

Furthermore, PAGASA monitored that no low pressure area (LPA) or weather disturbance was monitored inside or outside the Philippine Area of Responsibility (PAR) that could affect any part of the country in the coming days.