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Tuesday, December 07, 2021
MANILA

Pagasa announces onset of La Niña

MANILA. In this handout photo provided by the Philippine Coast Guard, rescuers help residents navigate floodwaters caused by Tropical Storm Maring (Kompasu) in Brooke's Point, Palawan on Tuesday Oct. 12, 2021. (Philippine Coast Guard via AP)

(UPDATE) State weather bureau Philippine Atmospheric Geophysical and Astronomical Services Administration (Pagasa) on Friday, October 15, 2021, announced the onset of the La Niña phenomenon and the termination of the southwest monsoon.

This will bring above normal rainfall to most parts of the country until the first quarter of 2022, said Pagasa Deputy Administrator for Research and Development Esperanza Cayanan.

She also said there will be four to six tropical cyclones that will develop or will enter the Philippine area of responsibiliy, and will most likely make landfall before the end of the year. These cyclones are expected to enhance the northeast monsoon.

The above normal rainfall conditions will cause flashfloods, flooding and landslides in susceptible areas, particularly in the eastern sections of the country, Cayanan added.

Pagasa issued its first advisory on La Niña Friday, just a few days after Severe Tropical Storm Maring whipped through extreme northern Luzon and left at least 30 people dead from landslides and flashfloods.

"Recent oceanic and atmospheric conditions indicate La Niña has developed in the tropical Pacific. Since July 2021, the sea surface temperatures in the central and equatorial Pacific started to cool and further temperature drop strengthened in September, reaching La Niña threhsold. Based on the latest forecast, La Niña is likely to persist until the first quarter of 2022," Cayanan said in a virtual press conference.

The weather bureau advised all concerned government agencies and the public to take precautionary measures to mitigate the potential adverse impact of La Niña. (MVI / SunStar Philippines)


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