Question: What is the typical Pacific typhoon season?

2019 Pacific typhoon season


The 2019 Pacific typhoon season is an ongoing event in the annual cycle of tropical cyclone formation, in which tropical cyclones form in the western Pacific Ocean. The season runs throughout 2019, though most tropical cyclones typically develop between May and October. The season's first named storm, Pabuk, developed on January 1, becoming the earliest-forming tropical storm of the western Pacific Ocean on record.
The scope of this article is limited to the Pacific Ocean to the north of the equator between 100°E and 180th meridian. Within the northwestern Pacific Ocean, there are two separate agencies that assign names to tropical cyclones which can often result in a cyclone having two names. The Japan Meteorological Agency(JMA) will name a tropical cyclone should it be judged to have 10-minute sustained wind speeds of at least 65km/h (40mph) anywhere in the basin, whilst the Philippine Atmospheric, Geophysical and Astronomical Services Administration(PAGASA) assigns names to tropical cyclones which 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 regardless of whether or not a tropical cyclone has already been given a name by the JMA. Tropical depressions that are monitored by the United States' Joint Typhoon Warning Center(JTWC) are given a number with a "W" suffix.
Seasonal forecasts
During the year several national meteorological services and scientific agencies forecast how many tropical cyclones, tropical storms, and typhoons will form during a season and/or how many tropical cyclones will affect a particular country. These agencies included the Tropical Storm Risk(TSR) Consortium of University College London, PAGASA and Taiwan's Central Weather Bureau.
Season summary

Systems
Tropical Storm Pabuk

A tropical disturbance formed over the southern portion of the South China Sea on December 28, 2018,[1] and it absorbed the remnants of Tropical Depression 35W (Usman) on December 30.[2] Under high vertical wind shear, the low-pressure area remained disorganized until December 31 when it was upgraded to a tropical depression by both the JMA and the JTWC.[3] As it was designated 36W by the JTWC, it was unofficially the last system of the 2018 typhoon season.[4] At around 06:00 UTC on January 1, 2019, it was upgraded to the first tropical storm of the 2019 typhoon season and named Pabuk by the JMA, surpassing Alice in 1979 to become the earliest-forming tropical storm of the northwest Pacific Ocean on record.[5] At that time, Pabuk was about 650 km (405 miles) southeast of Ho Chi Minh City, Vietnam and drifted westward slowly with a partially exposed low-level circulation center.[6]
Under marginal conditions including warm sea surface temperatures, excellent poleward outflow but strong vertical wind shear, Pabuk struggled to intensify further for over two days until it accelerated west-northwestward and entered the Gulf of Thailand on January 3, where vertical wind shear was slightly weaker. It became the first tropical storm over the gulf since Muifa in 2004. Moreover, it tried to form an eye revealed by microwave imagery.[7] On January 4, the Thai Meteorological Department reported that Pabuk had made landfall over Pak Phanang, Nakhon Si Thammarat at 12:45 ICT (05:45 UTC), although other agencies indicated a landfall at peak intensity between 06:00 and 12:00 UTC.[8] Pabuk became the first tropical storm to make landfall over southern Thailand since Linda in 1997. Shortly after 12:00 UTC, the JMA issued the last full advisory for Pabuk as it exited the basin.[9][10]
One of the islands in the south of Thailand, Koh Samui, appeared to have been spared much of the brunt of the storm with no confirmed deaths. Beaches were closed, but even with the bad weather approaching, tourists on the popular island in the Gulf of Thailand continued to visit bars and restaurants catering to them.[11]
In Vietnam, Pabuk caused one death,[12] and the losses were estimated at ₫27.87 billion (US$1.2 million).[13] Eight people in Thailand were killed,[14][15] and the estimated losses in the country were about ฿3.2 billion (US$100 million).[16] Pabuk also killed one person in Malaysia.[17]
Tropical Depression 01W (Amang)

The JTWC upgraded a disturbance north of Bairiki to a tropical depression with the designation 01W late on January 4 and expected some intensification,[18] but it failed to develop and the JTWC downgraded it back to a disturbance on January 6.[19] The system continued drifting westwards for two weeks without development. On January 19, the JMA upgraded the low-pressure area to a tropical depression when it was already located about 200km (120mi) west of Palau.[20]
The depression indirectly triggered landslides and flash floods in Davao Oriental, killing 7 and leaving 2 missing. Financial losses were at PH₱2.73 million (US$51,800).[21]

Storm names

Within the Northwest Pacific Ocean, both the Japan Meteorological Agency (JMA) and the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) assign names to tropical cyclones that develop in the Western Pacific, which can result in a tropical cyclone having two names.[22] The Japan Meteorological Agency's RSMC Tokyo— Typhoon Center assigns international names to tropical cyclones on behalf of the World Meteorological Organization's Typhoon Committee, should they be judged to have 10-minute sustained windspeeds of 65km/h (40mph).[23] PAGASA names to tropical cyclones which move into or form as a tropical depression in their area of responsibility located between 135°E and 115°E and between 5°N and 25°N even if the cyclone has had an international name assigned to it.[22] The names of significant tropical cyclones are retired, by both PAGASA and the Typhoon Committee.[23] Should the list of names for the Philippine region be exhausted then names will be taken from an auxiliary list of which the first ten are published each season. Unused names are marked in gray.
International names

A tropical cyclone is named when it is judged to have 10-minute sustained windspeeds of 65km/h (40mph).[24] The JMA selected the names from a list of 140 names, that had been developed by the 14 members nations and territories of the ESCAP/WMO Typhoon Committee.[25] Retired names, if any, will be announced by the WMO in 2020; though replacement names will be announced in 2021. The next 28names on the naming list are listed here along with their international numeric designation, if they are used.






Pabuk (1901)
Wutip(unused)
Sepat(unused)
Mun(unused)
Danas(unused)
Nari(unused)
Wipha(unused)
Francisco(unused)
Lekima(unused)
Krosa(unused)
Bailu(unused)
Podul(unused)
Lingling(unused)
Kajiki(unused)
Faxai(unused)
Peipah(unused)
Tapah(unused)
Mitag(unused)
Hagibis(unused)
Neoguri(unused)
Bualoi(unused)
Matmo(unused)
Halong(unused)
Nakri(unused)
Fengshen(unused)
Kalmaegi(unused)
Fung-wong(unused)
Kammuri(unused)
Philippines

This season, PAGASA will use its own naming scheme, that will either develop within or move into their self-defined area of responsibility.[26] The names were taken from a list of names, that was last used during 2015 and are scheduled to be used again during 2023.[26] All of the names are the same except Liwayway and Nimfa, which replaced the names Lando and Nona after it was retired.[26]







Amang
Betty(unused)
Chedeng(unused)
Dodong(unused)
Egay(unused)
Falcon(unused)
Goring(unused)
Hanna(unused)
Ineng(unused)
Jenny(unused)
Kabayan(unused)
Liwayway(unused)
Marilyn(unused)
Nimfa(unused)
Onyok(unused)
Perla(unused)
Quiel(unused)
Ramon(unused)
Sarah(unused)
Tisoy(unused)
Ursula(unused)
Viring(unused)
Weng(unused)
Yoyoy(unused)
Zigzag(unused)
Auxiliary list







Abe(unused)
Berto(unused)
Charo(unused)
Dado(unused)
Estoy(unused)
Felion(unused)
Gening(unused)
Herman(unused)
Irma(unused)
Jaime(unused)

Season effects
This table summarizes all the systems that developed within or moved into the North Pacific Ocean, to the west of the International Date Line during 2019. The tables also provide an overview of a systems intensity, duration, land areas affected and any deaths or damages associated with the system.

See also

Tropical cyclones in 2019
2019 Atlantic hurricane season
2019 Pacific hurricane season
2019 North Indian Ocean cyclone season
South-West Indian Ocean cyclone seasons: 2018–19, 2019–20
Australian region cyclone seasons: 2018–19, 2019–20
South Pacific cyclone seasons: 2018–19, 2019–20














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