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2017 Pacific typhoon season
Season summary map
Seasonal boundaries
First system formed	January 7, 2017
Last system dissipated	Season ongoing
Strongest storm
Name	Nanmadol
• Maximum winds	100 km/h (65 mph) (10-minute sustained)
• Lowest pressure	985 hPa (mbar)
Seasonal statistics
Total depressions	9
Total storms	3
Typhoons	0
Super typhoons	0 (unofficial)
Total fatalities	11 total
Total damage	$40 million (2017 USD)
Related articles
2017 Atlantic hurricane season 2017 Pacific hurricane season 2017 North Indian Ocean cyclone season
Pacific typhoon seasons 2015, 2016, 2017, 2018, 2019

The 2017 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 2017, though most tropical cyclones typically develop between May and October. The season's first named storm, Muifa, developed on April 25.

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 65 km/h (40 mph) 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 115°E–135°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 include 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 during January 20, within its seasonal climate outlook for the period January – June. The outlook noted that one to two 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. During March 23, the Hong Kong Observatory predicted that the tropical cyclone season in Hong Kong would be near-normal, with four to seven tropical cyclones coming within 500 km (310 mi) of the territory compared to an average of six.

On May 5, Tropical Storm Risk (TSR) issued their first forecast for the season, anticipating an activity of slightly above normal with 27 named storms, 17 typhoons and 10 intense typhoons, including an Accumulated Cyclone Energy (ACE) of 357. On June 26, Taiwan's Central Weather Bureau (CWB) predicted a normal season with 21—25 tropical storms developing over the basin, while three — five systems were expected to affect Taiwan itself.

Season summary

The first half of the season was relatively inactive, with 7 systems developing, of which only 2 intensified into tropical storms. The first system of 2017 developed on January 7, and was named Auring by PAGASA. Tropical Depression Bising developed during the first week of February, and both systems were a factor of and worsened the effects of the 2017 Visayas and Mindanao floods.

Systems

Tropical Depression 01W (Auring)

Tropical depression (JMA)
Tropical depression (SSHWS)
Duration	January 7 – January 16
Peak intensity	55 km/h (35 mph) (10-min); 1002 hPa (mbar)

On January 7, both PAGASA and the JMA reported that Tropical Depression Auring developed about 400 km (250 mi) to the northeast of Davao City on Mindanao, Philippines. During that day, the system moved along the southern periphery of a subtropical ridge of high pressure, before the JTWC initiated advisories on the system and designated it as Tropical Depression 01W. It later made landfall in the Philippines the next day, and was assessed to have degenerated into a remnant low by the JTWC. The JMA however tracked the system until it emerged into the South China Sea. By January 15, the JTWC re-issued advisories as it was located to the east of Vietnam. However, convection dissipated due to wind shear and land interaction, the JTWC issued their final warnings on January 16.

Flooding in Cebu killed one person. Damages from Tropical Depression Auring were totaled at Ph₱7.14 million (US$140,000) from agriculture and fishing in Negros Occidental.

Tropical Depression Bising

Tropical depression (JMA)
Duration	February 3 – February 7
Peak intensity	55 km/h (35 mph) (10-min); 1000 hPa (mbar)

On February 3, a tropical depression developed near Palau. The system dissipated on the 7th.

Tropical Depression 02W (Crising)

Tropical depression (JMA)
Tropical depression (SSHWS)
Duration	April 13 – April 20
Peak intensity	55 km/h (35 mph) (10-min); 1006 hPa (mbar)

This section needs expansion. You can help by adding to it. (April 2017)

A tropical depression formed over Palau on April 13. During the next 2 days, the system moved toward the Philippines

As of April 17, at least ten people were reported to be killed in Cebu by flooding from the system. Total damages throughout the Philippines reached Ph₱84.8 million (US$1.7 million), mostly from Danao, Cebu.

Tropical Storm Muifa (Dante)

Tropical storm (JMA)
Tropical storm (SSHWS)
Duration	April 22 – April 29
Peak intensity	65 km/h (40 mph) (10-min); 1002 hPa (mbar)

During April 22, the JMA started to monitor a tropical depression that had developed near Guam. After moving westward for a couple of days, the JTWC began initiating advisories, and designated the storm 03W. By April 25, 03W organized and began consolidating further as the JMA upgraded the depression to a tropical storm, giving the name Muifa. Muifa entered the Philippine Area of Responsibility the following day, and was named Dante by PAGASA. The storm, however, started moving northwards and immediately tracked out of the area by April 27. Following this, both the JMA and the JTWC downgraded Muifa to a tropical depression. Muifa fully dissipated early on April 29, and the JMA issued their final advisory on the storm.

Severe Tropical Storm Merbok

Severe tropical storm (JMA)
Tropical storm (SSHWS)
Duration	June 10 – June 13
Peak intensity	95 km/h (60 mph) (10-min); 990 hPa (mbar)

On June 10, the JMA started to track a tropical depression to the west of Manila, Philippines. After the system had entered in an area of favorable environments, the depression had rapidly organized, prompting the JTWC to start issuing advisories, giving the designation of 04W. A few hours later, 04W had intensified into a tropical storm, receiving the name Merbok as it start to move in a north-northwestward direction.

Merbok briefly reached peak intensity as a severe tropical storm shortly before making landfall in Eastern Shenzhen on June 12. Sustained winds of 51.3 knots (95.0 km/h; 59.0 mph) and a minimum pressure of 990.3 hPa (29.24 inHg) were recorded in Hong Kong as the eye passed nearby. On June 13, the JMA issued its final warning on Merbok, as the system dissipated over China. Across Guangdong Province, 32 homes were destroyed, 122,000 people reported property damage, and 13,000 hectares of crops flooded. Total economic losses reached CN¥260 million (US$38.2 million).

Severe Tropical Storm Nanmadol (Emong)

Severe tropical storm (JMA)
Tropical storm (SSHWS)
Duration	July 1 – July 5
Peak intensity	100 km/h (65 mph) (10-min); 985 hPa (mbar)

On July 1, the JMA upgraded a low-pressure area it had been monitoring to a tropical depression, located south-southwest of Okinotorishima. Later that day, the JMA began issuing advisories once the depression's sustained winds were estimated at 55 km/h (35 mph). Shortly thereafter, the PAGASA classified the system as a tropical depression, assigning the local name Emong. On July 2, the JMA classified the system as a tropical storm, and assigned the official name Nanmadol. The JTWC followed suit and gave the internal designation of 05W. The cyclone continued to intensify, and was upgraded by the JMA to a severe tropical storm later that day. Nanmadol reached peak intensity at about 06:00 UTC on July 3, and maintained this strength until making landfall on the western coast of Kyushu several hours later. The cyclone began to accelerate while following a generally eastward course across the south of Japan. After brushing the southern coast of Japan, the JTWC issued its final advisory during the next day. The JMA followed suit early on July 5, when it had considered the system as extratropical.

Evacuation advisories were issued to at least 20,000 residents due to fears of possible flooding and landslides, especially in the Niigata, Toyama and Nagano prefectures that had experienced rainfall accumulations of up to 300 mm (12 in) in the preceding hours. At least three people were injured during the storm—a young boy's hand was injured when a school window broke in the city of Kumamoto, and two adults in Oita prefecture sustained fall injuries as a result of the strong winds.

Tropical Depression

Tropical depression (JMA)
Duration	July 4 – Present
Peak intensity	<55 km/h (35 mph) (10-min); 1010 hPa (mbar)

Early on July 4, the JMA indicated that a tropical depression had formed south of Okinotorishima.

Other systems

On March 20, a tropical depression formed close to the east coast of Leyte, Philippines, and dissipated over the Sibuyan Sea on the next day. Early on June 29, the JMA initiated advisories on a newly-formed tropical depression south of Okinawa Island. The system re-curved and started moving in a northeastward direction until it dissipated to the southwest of Tokyo on July 1.

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. 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 65 km/h (40 mph). PAGASA assigns names to tropical cyclones which move into or form as a tropical depression in their area of responsibility located between 135°E–115°E and between 5°N–25°N even if the cyclone has had an international name assigned to it. The names of significant tropical cyclones are retired, by both PAGASA and the Typhoon Committee. 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 65 km/h (40 mph). 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. Retired names, if any, will be announced by the WMO in 2018; though replacement names will be announced in 2019. The next 28 names on the naming list are listed here along with their international numeric designation, if they are used.

Philippines

This season, PAGASA will use its own naming scheme, that will either develop within or move into their self-defined area of responsibility. The names were taken from a list of names, that was last used during 2013 and are scheduled to be used again during 2021. All of the names are the same except for Lannie, Salome and Yasmin, which replaced the names Labuyo, Santi and Yolanda after they were retired.

Season effects

This table summarizes all the systems that developed within or moved into the northern Pacific Ocean, to the west of the International Date Line during 2017. 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

• 2017 Atlantic hurricane season
• 2017 Pacific hurricane season
• 2017 North Indian Ocean cyclone season
• South-West Indian Ocean cyclone seasons: 2016–17, 2017–18
• Australian region cyclone seasons: 2016–17, 2017–18
• South Pacific cyclone seasons: 2016–17, 2017–18

References

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3. ^ Cheng, Ming-Dean (June 26, 2017). "Normal Number of Typhoons Expected for 2017; Three to Five May Hit Taiwan" (doc) (Press release). Taiwan Central Weather Bureau. Retrieved June 26, 2017.
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8. "Tropical Depression 01W (One) Warning Nr 007". Joint Typhoon Warning Center. January 8, 2017. Archived from the original on January 9, 2017. Retrieved January 8, 2017. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
9. "Prognostic Reasoning for Tropical Depression 01W (One) Warning Nr 008". Joint Typhoon Warning Center. January 15, 2017. Archived from the original on January 16, 2017. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
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11. ^ http://www.philstar.com/cebu-news/2017/01/10/1661350/due-rains-auring-girl-drowns-toledo-river
12. ^ "'Auring' damage to agro-fishery in Negros Occidental reaches P7.14M". Sunstar. January 21, 2017.
13. "Tropical Cyclone Advisory for Analysis and Forecast 2017-02-03T06:00:00Z". WIS Portal – GISC Tokyo. Japan Meteorological Agency. Retrieved February 3, 2017.
14. "Marine Weather Warning for GMDSS Metarea XI 2017-04-13T00:00:00Z". WIS Portal – GISC Tokyo. Japan Meteorological Agency. Retrieved April 13, 2017. {{cite web}}: Cite has empty unknown parameter: |dead-url= (help)
15. ^ "'Crising' death toll in Cebu rises to 10". Philstar. April 17, 2017.
16. ^ "Capitol pegs Crising damage at P84.8M". Inquirer. April 25, 2017.
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21. "No casualties reported in Typhoon Merbok". Xinhua. June 14, 2017. Retrieved June 16, 2017.
22. "Marine Weather Warning for GMDSS Metarea XI 2017-07-01T06:00:00Z". WIS Portal – GISC Tokyo. Japan Meteorological Agency. Retrieved July 1, 2017.
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31. "Marine Weather Warning for GMDSS Metarea XI 2017-07-04T00:00:00Z". WIS Portal – GISC Tokyo. Japan Meteorological Agency. Retrieved July 4, 2017.
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33. "Marine Weather Warning for GMDSS Metarea XI 2017-03-21T06:00:00Z". WIS Portal – GISC Tokyo. Japan Meteorological Agency. Retrieved March 21, 2017.
34. "Marine Weather Warning for GMDSS Metarea XI 2017-03-21T12:00:00Z". WIS Portal – GISC Tokyo. Japan Meteorological Agency. Retrieved March 21, 2017.
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37. ^ Padgett, Gary. "Monthly Tropical Cyclone Summary December 1999". Australian Severe Weather. Archived from the original on August 28, 2012. Retrieved October 1, 2013. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
38. ^ The Typhoon Committee (February 21, 2013). "Typhoon Committee Operational Manual 2013" (PDF). World Meteorological Organization. pp. 37–38. Archived from the original (PDF) on August 28, 2012. Retrieved October 1, 2013. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
39. http://www.typhooncommittee.org/48th/docs/item%204%20technical%20presentations/4.1.Review2015TyphoonSeason.pdf
40. Zhou, Xiao; Lei, Xiaotu (2012). "Summary of retired typhoons within the Western North Pacific Ocean". Tropical Cyclone Research and Review. 1 (1). The Economic and Social Commission for Asia and the Pacific/World Meteorological Organization's Typhoon Committee: 23–32. doi:10.6057/2012TCRR01.03. ISSN 2225-6032. Retrieved December 21, 2014.
41. ^ "Philippine Tropical Cyclone Names". Philippine Atmospheric, Geophysical and Astronomical Services Administration. Retrieved April 18, 2015.

External links

• China Meteorological Agency
• Digital Typhoon
• Hong Kong Observatory
• Japan Meteorological Agency
  • Multilingual Tropical Cyclone Information
• Joint Typhoon Warning Center
• Korea Meteorological Administration
• Malaysian Meteorological Department
• National Weather Service Guam
• Philippine Atmospheric, Geophysical and Astronomical Services Administration
• Taiwan Central Weather Bureau
• TCWC Jakarta
• Thai Meteorological Department
• Typhoon2000
• Vietnam's National Hydro-Meteorological Service

v t e Tropical cyclones of the 2017 Pacific typhoon season
	TDAuring TDBising TDTD TDCrising TSMuifa STSMerbok TDTD STSNanmadol TDTD TDTD STSTalas VSTYNoru TSKulap TSSonca TSRoke TYNesat TDTD TSHaitang TSNalgae TYBanyan TYHato STSPakhar TDTD TYSanvu TDTD STSMawar TSGuchol VSTYTalim TYDoksuri TDNando TD23W TYKhanun VSTYLan TD26W STSSaola TD29W TYDamrey TSHaikui TSKirogi TSKai-tak TYTembin TSBolaven
Category

• 2017 Pacific typhoon season
• Pacific typhoon seasons