Timeline of the 2015 Pacific typhoon season
This timeline documents all of the events of the 2015 Pacific typhoon season. Most of the tropical cyclones formed between May and November. The scope of this article is limited to the Pacific Ocean, north of the equator between 100°E and the International Date Line. This area, called the Western Pacific basin, is the responsibility of the Japanese Meteorological Agency (JMA). They host and operate the Regional Specialized Meteorological Center (RSMC), located in Tokyo. The Japanese Meteorological Agency (JMA) is also responsible for assigning names to all tropical storms that are formed within the basin. However, any storm that enters or forms in the Philippine Area of Responsibility (PAR) will be named by the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) using a local name. Also of note - the Western Pacific basin is monitored by the United States' Joint Typhoon Warning Center (JTWC), which gives all Tropical depressions a number with a "W" suffix.
Tropical Storm Bavi at peak intensity on March 14
Tropical Depression 05W intensifies into Tropical Storm Haishen on April 4
Three tropical cyclones simultaneously active in the Western Pacific; (from left to right) Linfa, Chan-hom and Nangka on July 7. 2 invests which soon to become Halola and Iune are also visible in the Central Pacific
Timeline of the 2013 Pacific typhoon season
Most of the tropical cyclones of the 2013 Pacific typhoon season formed between May and November of that year. The scope of this article is the Pacific Ocean north of the equator, between 100°E and the International Date Line. Tropical storms which form in the Western Pacific basin are assigned a name by the Japan Meteorological Agency (JMA). Tropical depressions forming in this basin are given a number with a "W" suffix by the United States' Joint Typhoon Warning Center (JTWC). The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) assigns names to tropical cyclones that enter or form in the Philippine area of responsibility, but these names are not in common use outside the Philippines.
Sonamu shortly after being classified as a tropical storm on January 4
Tropical Depression 02W on February 19, just before being classified as a tropical storm
Tropical Storms Pewa (bottom) and Unala (top–right) near the 180th meridian
Typhoon Usagi at its peak intensity as a Category 4 super typhoon