MANILA, Philippines – The state-run weather agency on Tuesday revealedt the La Niña phenomenon may occur from September to December this year, which means there could be more tropical cyclones and above normal rainfall during this period.
Nathaniel Servando, Philippine Atmospheric Geophysical and Astronomical Services Administration (Pagasa) chief, said that the El Niño Southern Oscillation- (ENSO) neutral conditions would likely persist from August to October.
“However, model forecasts suggest an increasing probability of short-lived La Niña conditions as early as the September-October-November season until the October-November-December season,” Servando said.
Pagasa said La Niña (cool phase of ENSO) is characterized by unusually cooler-than-average sea surface temperatures in the central and eastern equatorial Pacific.
“When conditions are favorable for the development of La Niña within the next six months and the probability is 55 percent or more, a La Niña Watch is issued,” the Pagasa administrator said.
La Niña is characterized by an above-average number of tropical cyclone occurrences toward the end of the year and above-normal rainfall conditions in most parts of the country that can trigger adverse impacts, including floods and landslides in vulnerable areas, the national weather bureau said.
La Niña forecast from Sept-Dec, expect more tropical cyclones, above normal rainfall -- Pagasa, This news data comes from:http://gangzhifhm.com
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