La Niña likely in the last quarter of 2021 — PAGASA

Marje Pelayo   •   September 14, 2021   •   395

MANILA, Philippines — The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said that La Niña may occur in the coming months.

Based on the agency’s La Niña Alert issued on Tuesday (September 14), there is a 70% to 80% chance that La Niña will form in the last quarter this year.

This phenomenon may persist or prevail until the first quarter of 2022, the agency said.

Also, PAGASA’s rainfall forecast suggests that above-normal rainfall conditions in many areas may be experienced in the next several months.

This can be attributed to the expected stronger easterlies, enhanced Northeast monsoon and tropical cyclone occurrences, according to the advisory.

“The eastern sections of the country which normally receive more rainfall during the last quarter of the year could further increase the likelihood of more adverse impacts such as floods and landslides over highly vulnerable areas,” PAGASA Administrator Vic Malano said in the advisory.

“With this scenario, all concerned agencies are advised to take precautionary measures to mitigate the potential adverse impacts of this looming La Niña,” he added.

La Niña phenomenon refers to the unusually cool ocean surface temperatures in the central and eastern equatorial Pacific.

Expect colder days as PAGASA announces onset of amihan season

Aileen Cerrudo   •   October 26, 2021

MANILA, Philippines—Expect colder days ahead after the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) announced the onset of northeast monsoon or amihan season in the country.

PAGASA also observed gradual cooling of the surface air temperature over the northeastern part of Luzon.

“For the past several days, strong to gale-force northeasterly winds have prevailed over Northern Luzon due to the strengthening of the high-pressure system over Siberia and enhanced by passing of low- pressure areas (LPAs),” according to PAGASA

Surges of cold temperatures may also be expected in the coming months, the state weather bureau added.

Meanwhile, with the on-going La Niña, NE monsoon rainfall may be enhanced and could trigger floods, flash floods, and rain-induced landslides over susceptible areas. PAGASA reminded local government units and the public to take precautionary measures. AAC

ITCZ brings scattered rainshowers, thunderstorms over parts of Luzon, Visayas

Aileen Cerrudo   •   October 25, 2021

MANILA, Philippines—The Intertropical Convergence Zone (ITCZ) affecting Southern Luzon, Visayas, and Mindanao will continue to bring scattered rainshowers and thunderstorms,  the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) said Monday.

Scattered rainshowers and thunderstorms will prevail over Metro Manila, CALABARZON, MIMAROPA, Bicol Region, and Western Visayas. The state weather bureau warned possible flash floods or landslides during moderate to at times heavy rains.

Cagayan Valley and Aurora will likewise have cloudy skies with scattered rainshowers and isolated thunderstorms, while the rest of the country will experience partly cloudy to cloudy skies with isolated rainshowers or thunderstorms. AAC

LPA spotted off Eastern Samar — PAGASA

Aileen Cerrudo   •   October 22, 2021

MANILA, Philippines—A low pressure area (LPA) has been spotted in Eastern Samar, according to the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA).

Based on the weather forecast of PAGASA, the LPA was spotted 525 kilometers east of Guiuan, Eastern Samar at around 3 a.m. it is embedded along the Intertropical Convergence Zone (ITCZ) affecting Palawan, Visayas, and Mindanao.

Cloudy skies with scattered rainshowers and thunderstorms are expected in Caraga, Eastern Visayas, and Central Visayas.

Batanes and Cagayan might experience partly cloudy to cloudy skies with isolated light rains.

In Metro Manila, and the rest of the country, weather will be partly cloudy to cloudy skies with isolated rainshowers or thunderstorms.

PAGASA said the LPA has a low chance of intensifying into a tropical depression within 24 hours. AAC

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