sendong entered the philippine area of responsibility on early on december 15.
sendong entered the philippine area of responsibility on early on december 15.
when did sendong enter the philippine area of responsibility?
early on december 15
on december 11, a disturbance formed and persisted near chuuk. on december 13, the low pressure area rapidly intensified prompting the jtwc to issue a tcfa. on the same day, the jtwc upgraded the low pressure to a tropical depression and designated as "27w"; in addition, the jma also upgraded it to a tropical depression. the jtwc upgraded the system to a tropical storm on december 14, but downgraded it to a tropical depression early on december 15, and the pagasa designated it "sendong" as it entered the philippine area of responsibility. after passing palau on december 15, both the jtwc and the jma upgraded the system to a tropical storm and named it "washi". on december 16, washi made landfall over surigao del sur, a province of the philippines located in mindanao. several hours later, washi arrived at the sulu sea and regained its strength quickly, due to slight land interaction with mindanao. late on december 17, washi crossed palawan, and arrived at the south china sea. on december 19, washi weakened into a tropical depression and dissipated.
2011 pacific typhoon season
philippine area of responsibility









































the philippine area of responsibility (par) is an area in the northwestern pacific where pagasa, the philippines' national meteorological agency monitors weather occurrences. significant weather disturbances, specifically, tropical depressions and tropical cyclones, that enter or develop in the par are given philippine-specific names.









































section::::boundary.









































the area is bounded by six points namely:
philippine area of responsibility