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The Philippines is a typhoon-prone country, with approximately twenty tropical cyclones entering its area of responsibility per year. Locally known generally as bagyo (), [3] typhoons regularly form in the Philippine Sea and less often, in the South China Sea, with the months of June to September being the most active, August being the month with the most activity.
The storm's rainfall also prompted PAGASA to declare the start of the 2020 Philippine rainy season on June 12. [33] Typhoon Goni (Rolly) at peak intensity near Catanduanes on November 1, 2020. July 13–14, 2020: Tropical Depression Carina brought heavy rainfall which led to Tropical Cyclone Signal No. 1 being raised over the Babuyan Islands ...
An intensity-duration-frequency curve (IDF curve) is a mathematical function that relates the intensity of an event (e.g. rainfall) with its duration and frequency of occurrence. [1] Frequency is the inverse of the probability of occurrence. These curves are commonly used in hydrology for flood forecasting and civil engineering for urban ...
The storm, which maintained its intensity as a “super typhoon” for over 60 hours last week leaving scientists calling it a “beast”, has now gradually started to weaken as it inches close ...
The intensity and duration, however, are not uniform from year to year. ... PAGASA's Tropical Cyclone Intensity Scale [5] [6] ... Rainfall is more or less evenly ...
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 ...
The PAGASA also noted the formation and gave it the name Egay. On July 23, the system began to intensify rapidly, and achieved typhoon status. Late on July 24, the JTWC classified it as a super typhoon. The next morning the PAGASA did the same thing as on that day it reached its peak of 1 minute sustained winds of 240 km/h (150 mph).
The likelihood or probability of an event with a specified intensity and duration is called the return period or frequency. [93] The intensity of a storm can be predicted for any return period and storm duration, from charts based on historical data for the location. [94] The term 1 in 10 year storm describes a rainfall event which is rare and ...