2018 Pacific typhoon season
Season summary map
Seasonal boundaries
First system formed	December 29, 2017 (2017-12-29)
Last system dissipated	December 29, 2018 (2018-12-29)
Strongest storm
Name	Kong-rey & Yutu
• Maximum winds	215 km/h (130 mph) (10-minute sustained)
• Lowest pressure	900 hPa (mbar)
Seasonal statistics
Total depressions	44, 1 unofficial
Total storms	29, 1 unofficial
Typhoons	13
Super typhoons	7 (unofficial)
Total fatalities	793 total
Total damage	$31.54 billion (2018 USD) (Third-costliest Pacific typhoon season on record)
Related articles
Timeline of the 2018 Pacific typhoon season 2018 Atlantic hurricane season 2018 Pacific hurricane season 2018 North Indian Ocean cyclone season
Pacific typhoon seasons 2016, 2017, 2018, 2019, 2020

The 2018 Pacific typhoon season was at the time, the costliest Pacific typhoon season on record, until the record was beaten by the following year. The season was well above-average, producing twenty-nine storms (including one that crossed over from the Eastern/Central Pacific), thirteen typhoons, seven super typhoons and six Category 5 tropical cyclones. The season ran throughout 2018, though most tropical cyclones typically develop between May and October. The season's first named storm, Bolaven, developed on January 3, while the season's last named storm, Man-yi, dissipated on November 28. The season's first typhoon, Jelawat, reached typhoon status on March 29, and became the first super typhoon of the year on the next day.

The scope of this article is limited to the Pacific Ocean, to the north of the equator between 100°E and the 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, one from the JMA and one from PAGASA. The Japan Meteorological Agency (JMA) will name a tropical cyclone should it be judged to have 10-minute sustained wind speeds of at least 65 km/h (40 mph) anywhere in the basin, while 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 and 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

TSR forecasts Date	Tropical storms	Total Typhoons	Intense TCs	ACE	Ref
Average (1965–2017)	26	16	9	294	[1]
May 11, 2018	27	17	9	307	[1]
July 6, 2018	27	17	10	331	[2]
August 7, 2018	27	17	9	319	[3]
Other forecasts Date	Forecast Center	Period		Systems	Ref
January 15, 2018	PAGASA	January–March		1–3 tropical cyclones	[4]
January 15, 2018	PAGASA	April–June		2–4 tropical cyclones	[4]
March 15, 2018	VNCHMF	January–December		12–13 tropical cyclones	[5]
March 23, 2018	HKO	January–December		5–8 tropical cyclones	[6]
July 13, 2018	PAGASA	July–September		6–8 tropical cyclones	[7]
July 13, 2018	PAGASA	October–December		4–6 tropical cyclones	[7]
2018 season	Forecast Center	Tropical cyclones	Tropical storms	Typhoons	Ref
Actual activity:	JMA	44	29	13
Actual activity:	JTWC	36	30	16
Actual activity:	PAGASA	20	15	6

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. The first forecast of the year was released by PAGASA on January 15, within its seasonal climate outlook for the period January–June.^[4] The outlook noted that one to three tropical cyclones were expected between January and March, while two to four were expected to develop or enter the Philippine Area of Responsibility between April and June.^[4] PAGASA also mentioned that the La Niña would be short-lived, predicting that it would last until February or April.^[4]

On March 15, the Vietnamese National Center for Hydro Meteorological forecasts (VNCHMF) predicted that roughly twelve to thirteen tropical cyclones would affect Vietnam during 2018, which is above average.^[5] On March 23, the Hong Kong Observatory predicted that five to eight tropical cyclones would come within 500 kilometres of Hong Kong, which is normal to above normal, with the first tropical cyclone affecting Hong Kong in June or earlier.^[6] On May 11, the Tropical Storm Risk (TSR) issued their first forecast for the season, predicting that the 2018 season would be a slightly above average season with 27 named storms, 17 typhoons, and nine intense typhoons.^[1] The TSR released their second forecast on July 6, still predicting that the season will be above average, with the only changes to their forecast increasing the number of intense typhoons from 9 to 10.^[2] The PAGASA issued their second and final outlook on July 13 for the period of July – December, predicting six to eight tropical cyclones were expected to develop or enter their area of responsibility between July and September, while four to six were forecast during October to December. On August 7, TSR released their final forecast, with its only changes decreasing the numbers of intense typhoons from 10 to 9, as well as decreasing its ACE forecast from 331 units to 319 units.^[3]

Season summary

This section needs expansion. You can help by adding to it. (November 2020)

2018 opened with Tropical Depression Agaton active to the east of the Philippines. Over the course of two days, the system moved into the South China Sea and intensified into the first named storm, Bolaven. A month later, Tropical Storm Sanba developed and affected the southern Philippines. About another month later, Tropical Depression 03W formed in the open Pacific and was named Jelawat. Jelawat intensified into the season's first typhoon on March 29, and then the season's first super typhoon. Tropical activity fired up by June, when a series of storms developed, with Tropical Storm Ewiniar making landfall over mainland China. Later that month, Typhoon Prapiroon developed and affected the Korean Peninsula, becoming the first to do so since 2013. Thereafter, Typhoon Maria developed and reached its peak intensity as a Category 5 super typhoon, being the first typhoon to reach that intensity since Typhoon Nock-ten in 2016. Hurricane Hector crossed the International Date Line on August 13, the first to do so since Genevieve in 2014. Systems like Tropical Storms Son-Tinh, Ampil, Josie, Wukong, Jongdari, Shanshan, Yagi, Leepi, Bebinca, and Rumbia formed between late July and early August.

Costliest known Pacific typhoon seasons

Rank	Total damages	Season
1	≥ $38.96 billion	2019
2	≥ $37.53 billion	2023
3	≥ $31.54 billion	2018
4	≥ $26.41 billion	2013
5	≥ $20.79 billion	2012
6	≥ $18.77 billion	2004
7	≥ $18.36 billion	1999
8	≥ $17.69 billion	2016
9	≥ $15.1 billion	2017
10	≥ $14.84 billion	2015

On August 16, Typhoon Soulik developed and headed north, until a Fujiwhara interaction with Typhoon Cimaron (which formed after Soulik) made it head west towards the East China Sea. It later made landfall on South Korea, making it the first typhoon to make landfall on South Korea since Typhoon Chaba in 2016. Cimaron made landfall near Kyoto, Japan on August 23. As Cimaron was nearing landfall, Tropical Depression Luis formed, which made landfall on China and Taiwan. Later that month, Typhoon Jebi developed over the West Pacific and intensified into the third super typhoon of the season.

In September, Typhoon Mangkhut became the fourth super typhoon of the season and made landfall on the island of Luzon in the Philippines.^[8] On the same day, Tropical Depression Neneng formed, which later became Tropical Storm Barijat and made landfall on Vietnam. By late September, Typhoon Trami (Paeng) formed, becoming the 5th super typhoon of 2018. While Typhoon Trami was in the Western Pacific, nearing Okinawa with winds of 165 km/h (103 mph), Tropical Depression 30W formed, and was named Kong-rey by the JMA after strengthening into a tropical storm. It intensified into a super typhoon on October 2, becoming the 5th Category 5 super typhoon. Later on in the month, it was followed by the sixth and final Category 5-equivalent storm of the season, Yutu.

Systems

Tropical Storm Bolaven (Agaton)

Tropical storm (JMA)
Tropical storm (SSHWS)
Duration	December 29, 2017 – January 4, 2018
Peak intensity	65 km/h (40 mph) (10-min); 1002 hPa (mbar)

A low-pressure area developed into a tropical depression northeast of Palau on December 29, 2017.^[9] The system moved generally westward, and on the first day of 2018, the PAGASA began issuing advisories on the system and locally named it Agaton.^[10] Both the JMA and the JTWC followed suit, with the latter designating the system as 01W.^[11] The depression reached the Philippines on January 1, making landfall over Bucas Grande at 17:00 UTC, then at Claver, Surigao del Norte at 17:15 UTC.^[12] The system crossed the Bohol Sea before making a third landfall near Jagna, Bohol at 20:00 UTC, a fourth in Santander, Cebu at 21:00 UTC, and a final landfall at Bais, Negros Oriental at 23:30 UTC.^[12] By January 3, the system had intensified into a tropical storm according to the JMA and was named Bolaven, thus becoming the first named storm of the season. However, several hours later, Bolaven started to weaken and rapidly deteriorate.^[13] The system was last tracked by the JMA to the east of Vietnam on January 4.

The impact caused by Bolaven (Agaton) was moderate but not as significant as the previous two systems, Kai-tak and Tembin, with about 2,000 passengers stranded in ports in the Visayas.^[14] As of January 22, three people have been reported killed by the storm, while total damages were up to Ph₱554.7 million (US$11.1 million).^[15]

Zdroj:https://en.wikipedia.org?pojem=2018_Pacific_typhoon_season
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