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The Philippine Atmospheric, Geophysical and Astronomical Services Administration (Filipino: Pangasiwaan ng Pilipinas sa Serbisyong Atmosperiko, Heopisiko at Astronomiko, [4] abbreviated as PAGASA, which means "hope" as in the Tagalog word pag-asa) is the National Meteorological and Hydrological Services (NMHS) agency of the Philippines mandated to provide protection against natural calamities ...
Since 1963, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) has assigned local names to a tropical cyclone should it move into or form as a tropical depression in their area of responsibility located between 135°E and 115°E and between 5°N-25°N, even if the cyclone has had an international name assigned to it.
Whenever a tropical cyclone forms inside or enters the Philippine Area of Responsibility (PAR), the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) commences the release of Tropical Cyclone Bulletins (TCB) to inform the general public of the cyclone's location, intensity, movement, circulation radius and its forecast track and intensity for at most 72 hours.
The PAGASA naming scheme for Philippine use contains four lists, each containing twenty-five names arranged in alphabetical order. Every typhoon season begins with the first name in the assigned list, and the rolls of names are each reused every four years. An auxiliary list of ten names is used when the main list in a year had been exhausted. [13]
The next day, the PAGASA and the JTWC upgraded Nalgae to a severe tropical storm status on October 28. Nalgae would eventually make its first landfall in Virac, Catanduanes, which was quickly followed by another landfall thirty minutes later. It then traversed the Bicol Region and emerged into Ragay Gulf, eventually making another landfall.
Typhoon Ketsana, known in the Philippines as Tropical Storm Ondoy, was the second-most devastating tropical cyclone of the 2009 Pacific typhoon season, causing $1.15 billion in damages and 665 fatalities, only behind Morakot earlier in the season, which caused 956 deaths and damages worth $6.2 billion.
The PAGASA began raising Signal No. 1 as early as September 23; signals were first raised in Isabela and Aurora. [45] The Flood Forecasting and Warning Section of the PAGASA (PAGASA-FFWS) also issued advisories in parts of Ifugao and Isabela which were next to the Magat River — the main spillway of the Magat Dam , which was nearby the storm's ...
Typhoon Durian, known in the Philippines as Super Typhoon Reming, was a deadly tropical cyclone that wreaked havoc in the Philippines and later crossed the Malay Peninsula in late November 2006, causing massive loss of life when mudflows from the Mayon Volcano buried many villages.