2020 Pacific typhoon season

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Template:Infobox hurricane season The 2020 Pacific typhoon season is a late-starting, ongoing event in the annual cycle of tropical cyclone formation, in which tropical cyclones form in the western Pacific Ocean. The season runs throughout the year, though most tropical cyclones typically develop between May and October. The season's first tropical cyclone developed on May 10, making it the sixth-latest start in the basin on record, just slightly behind 1973.

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 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[edit source | edit]

TSR forecasts
ACE Ref.
Other forecasts
Period Systems Ref.
January 22, 2020 PAGASA January–March 0–4 tropical cyclones [1]
January 22, 2020 PAGASA April–June 2–5 tropical cyclones [1]
2020 season Forecast
Typhoons Ref.
Actual activity: JMA 1 1 1
Actual activity: JTWC 1 1 1
Actual activity: PAGASA 1 1 1

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 for the year was released by PAGASA on January 22 predicting the first half of 2020, within its monthly seasonal climate outlook.[1] The PAGASA predicts that only 0-4 tropical cyclones are expected to form or enter the Philippine Area of Responsibility between January and March, while five to eight tropical cyclones are expected to form between April and June. This was due to the fact that the El Niño–Southern Oscillation was seeing neutral conditions across the Pacific, and could persist until midyear.[1]

Season summary[edit source | edit]

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 from:01/11/2020 till:01/12/2020 text:November
 from:01/12/2020 till:01/01/2021 text:December


The first few months of 2020 were extremely quiet, with no tropical systems developing between the months of January and April. On May 10, the season saw its first tropical system with the development of Typhoon Vongfong (Ambo) making it the sixth-latest starting season on record, as well as the latest since 2016. Two days later, the system strengthened to the first official named tropical storm of the season.

Systems[edit source | edit]

Typhoon Vongfong (Ambo)[edit source | edit]

Vongfong (Ambo)Typhoon icon.png
Current storm status
Typhoon  (JMA)
Current storm status
Category 3 typhoon (1-min mean)
Vongfong Geostationary VIS-IR 2020.png
Satellite image
2020 JTWC 01W forecast map.wp0120.gif
Forecast map
As of:06:00 UTC, May 14
Location:12°12′N 125°18′E / 12.2°N 125.3°E / 12.2; 125.3 (Vongfong (Ambo))
339 nmi (630 km; 390 mi) ESE of Manila, Philippines
Sustained winds:85 knots (155 km/h; 100 mph) (10-min mean)
100 knots (185 km/h; 115 mph) (1-min mean)
gusting to 120 knots (220 km/h; 140 mph)
Pressure:965 hPa (28.50 inHg)
Movement:W at 9 kn (17 km/h; 10 mph)
See more detailed information.

A low-pressure area was first noted on May 9 by the JTWC near Micronesia and was given a medium chance of developing into a tropical cyclone. The next day, the JMA had noted it had developed into a tropical depression to the east of Mindanao, Philippines and was expected to slowly move west. The JTWC then issued a Tropical Cyclone Formation Alert (TCFA) for the embryonic system just hours later while convection began to gradually obscure the center. Later that day, the PAGASA followed suit and upgraded the system to a tropical depression, assigning it the name Ambo, as it became the first tropical cyclone to enter their area of responsibility for 2020.[2][3] The system began to slowly drift westwards throughout the proceeding days,[4] gradually intensifying with occasional convective bursts occurring near the slightly elongated circulation. On the next day, the JTWC upgraded Ambo into a tropical depression, designating it as 01W.[5] The storm gradually intensified throughout the day, as signified by a well-defined rain band developing on the northwestern side, and began to turn north. At this time, the JMA upgraded 01W to a tropical storm and assigned it the first name of the year, Vongfong.[6] Shortly after, the JTWC followed and upgraded the system to tropical storm intensity.[7] Utilizing favorable conditions with low wind shear, 29-30°C waters, and excellent outflow, Vongfong began to rapidly intensify by early May 13.[8] Shortly after, the JMA upgraded the system to a severe tropical storm. Soon after, the JTWC upgraded the storm to a Category 1 typhoon with 1-minute sustained winds of 130 km/h (80 mph) as the structure quickly improved. The PAGASA and JMA would then upgrade the system to a typhoon later in the day,[8] with the JTWC quickly upgrading the system to a Category 2 typhoon as the eye became clearer. A few hours later, Vongfong intensified to a category 3-equivalent typhoon.[9] At 12:15pm on May 14 (UTC+8), Vongfong made landfall on Samar Island. [10]

Current storm information[edit source | edit]

As of 06:00 UTC May 14, Typhoon Vongfong (Ambo) is located near 12°12′N 125°18′E / 12.2°N 125.3°E / 12.2; 125.3 (Vongfong), also about 339 nautical miles (630 km; 390 mi) east-southeast of Manila, Philippines. Maximum 10-minute sustained winds are at 85 knots (155 km/h; 100 mph), while maximum 1-minute sustained winds are at 100 knots (185 km/h; 115 mph), with gusts up to 120 knots (220 km/h; 140 mph). The minimum central barometric pressure is 965 hPa (28.50 inHg), and the system is moving westward at 9 knots (17 km/h; 10 mph).

For the latest official information see:

Watches and warnings[edit source | edit]


Storm names[edit source | edit]

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.[11] 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).[12] 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.[11] The names of significant tropical cyclones are retired, by both PAGASA and the Typhoon Committee.[12] 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 Template:Tcname unused.

International names[edit source | edit]

A tropical cyclone is named when it is judged to have 10-minute sustained windspeeds of 65 km/h (40 mph).[13] 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.[14] Retired names, if any, will be announced by the WMO in 2021; replacement names will be announced in 2022. The next 28 names on the naming list are listed here along with their international numeric designation, if they are used.

Philippines[edit source | edit]

This season, PAGASA will use its own naming scheme for storms that will either develop within or move into their self-defined area of responsibility.[15] The names are taken from a list of names that were last used during 2016 and are scheduled to be used again during 2024.[15] All of the names are the same except Kristine, Leon, and Nika, which replaced the names Karen, Lawin, and Nina after they were retired.[15]

Auxiliary list

Season effects[edit source | edit]

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 2020. The tables also provide an overview of a systems intensity, duration, land areas affected and any deaths or damages associated with the system.

Template:Pacific areas affected (Top) |- | Vongfong (Ambo) || May 10 – present || bgcolor=#fdaf9a|Typhoon || bgcolor=#fdaf9a|155 km/h (100 mph) || bgcolor=#fdaf9a|965 hPa (28.50 inHg) || Palau, Philippines || None || None || |- Template:TC Areas affected (Bottom)

See also[edit source | edit]

References[edit source | edit]

  1. 1.0 1.1 1.2 1.3 121st Climate Forum March-August 2020 (PDF) (Seasonal Climate Outlook). Philippine Atmospheric Geophysical and Astronomical Services Administration. January 22, 2020. Archived from the original (PDF) on July 16, 2019. Retrieved March 13, 2020.
  2. "First storm this year to hit Mindanao, PAGASA says". CNN Philippines. May 10, 2020. Retrieved May 13, 2020.
  3. "Severe Weather Bulletin #1 for Tropical Depression "Ambo"" (PDF). Philippine Atmospheric, Geophysical and Astronomical Services Administration. May 10, 2020. Retrieved May 13, 2020.
  4. "Severe Weather Bulletin #3 for Tropical Depression "Ambo"" (PDF). Philippine Atmospheric, Geophysical and Astronomical Services Administration. Retrieved May 12, 2020.
  5. "Tropical Depression 01W Warning Nr 1". Joint Typhoon Warning Center. April 12, 2020. Archived from the original on April 12, 2020.
  6. Shu-fen, Wang; Hsin-Yin, Lee (May 12, 2020). "Tropical Storm Vongfong likely to approach Taiwan over weekend: CWB". Focus Taiwan.
  7. "Tropical Storm 01W (Vongfong) Warning Nr 004". Joint Typhoon Warning Center. May 12, 2020. Archived from the original on May 12, 2020.
  8. 8.0 8.1 "Severe Weather Bulletin #10 - Typhoon "AMBO" (VONGFONG)" (PDF). Philippine Atmospheric, Geophysical and Astronomical Services Administration.
  9. "Typhoon 01W (Vongfong) Warning Nr 009". Joint Typhoon Warning Center. May 13, 2020. Archived from the original on May 13, 2020.
  10. "Severe Weather Bulletin #14 for Ambo". PAGASA. May 14, 2020. Archived from the original on May 14, 2020.
  11. 11.0 11.1 Padgett, Gary. "Monthly Tropical Cyclone Summary December 1999". Australian Severe Weather. Archived from the original on August 28, 2012. Retrieved October 1, 2013.
  12. 12.0 12.1 The Typhoon Committee (February 21, 2013). "Typhoon Committee Operational Manual 2013". World Meteorological Organization. pp. 37–38. Archived from the original (PDF) on August 28, 2012. Retrieved October 1, 2013.
  13. "1REVIEW OF THE 2015TYPHOON SEASON" (PDF). typhooncommittee.org. 2016. Retrieved 2019-12-11. Cite journal requires |journal= (help)
  14. Zhou, Xiao; Lei, Xiaotu (2012). "Summary of retired typhoons within the Western North Pacific Ocean". Tropical Cyclone Research and Review. The Economic and Social Commission for Asia and the Pacific/World Meteorological Organization's Typhoon Committee. 1 (1): 23–32. doi:10.6057/2012TCRR01.03. ISSN 2225-6032. Archived from the original on August 12, 2017. Retrieved December 21, 2014.
  15. 15.0 15.1 15.2 "Philippine Tropical Cyclone Names". Philippine Atmospheric, Geophysical and Astronomical Services Administration. Archived from the original on December 28, 2016. Retrieved April 18, 2015.

External links[edit source | edit]

Template:WPAC EL's Template:2020 Pacific typhoon season buttons Template:TC Decades Template:Tropical cyclone season

Visibility[edit source | edit]

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