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* JMA's [https://www.data.jma.go.jp/multi/cyclone/cyclone_detail.html?id=61&lang=en Tropical Cyclone Information on Tropical Depression "b"]
* JMA's [https://www.data.jma.go.jp/multi/cyclone/cyclone_detail.html?id=61&lang=en Tropical Cyclone Information on Tropical Depression "b"]
* JTWC's [https://www.metoc.navy.mil/jtwc/products/wp9123web.txt Tropical Cyclone Formation Alert on Tropical Disturbance 91W (Invest)]
* JTWC's [https://www.metoc.navy.mil/jtwc/products/wp9123web.txt Tropical Cyclone Formation Alert on Tropical Disturbance 91W (Invest)]
* PAGASA's [https://pubfiles.pagasa.dost.gov.ph/tamss/weather/tca/TCA%231.pdf Tropical Cyclone Advisory on Tropical Depression]
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Revision as of 07:42, 27 July 2023


2023 Pacific typhoon season
Season summary map
Seasonal boundaries
First system formedMarch 4, 2023
Last system dissipatedSeason ongoing
Strongest storm
NameMawar
 • Maximum winds215 km/h (130 mph)
(10-minute sustained)
 • Lowest pressure905 hPa (mbar)
Seasonal statistics
Total depressions10
Total storms5
Typhoons3
Super typhoons2 (unofficial)[nb 1]
Total fatalities18
Total damage$142 million (2023 USD)
Related articles
Pacific typhoon seasons
2021, 2022, 2023, 2024, 2025

The 2023 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 2023, though most tropical cyclones typically develop between May and October. The season's first named storm, Sanvu, developed on April 21. The following month, Mawar, intensified into the first typhoon of the season on May 21, becoming one of the strongest Northern Hemisphere tropical cyclones on record in May, and the second-strongest early-season tropical cyclone, behind only Surigae in April 2021.[1]

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)[nb 2] 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 the Philippine Area of Responsibility (PAR) 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)[nb 3][nb 1] are given a number with a "W" suffix.

Seasonal forecasts

TSR forecasts
Date		 Tropical
storms		 Total
Typhoons		 Intense
TCs		 ACE Ref.
Average (1965–2022) 25.7 16.1 8.7 290 [4]
May 5, 2023 29 19 13 394 [4]
July 7, 2023 29 19 12 382 [5]
Other forecasts
Date		 Forecast
Center		 Period Systems Ref.
January 13, 2023 PAGASA January–March 0–2 tropical cyclones [6]
January 13, 2023 PAGASA April–June 2–4 tropical cyclones [6]
June 27, 2023 PAGASA July–September 7–10 tropical cyclones [7]
June 27, 2023 PAGASA October–December 4–7 tropical cyclones [7]
2023 season Forecast
Center		 Tropical
cyclones		 Tropical
storms		 Typhoons Ref.
Actual activity: JMA 10 5 3
Actual activity: JTWC 5 5 4
Actual activity: PAGASA 5 4 3

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 was released by PAGASA on January 13, 2023, in their monthly seasonal climate outlook predicting the first half of 2023. They predicted that only 0–2 tropical cyclones were expected to form or enter the Philippine Area of Responsibility between January and March, while 2–4 tropical cyclones are expected to form between April and June. PAGASA also stated that weakening La Niña conditions could last until it transitions back into ENSO-neutral conditions afterwards.[6]

On May 5, Tropical Storm Risk (TSR) issued its first forecast for the 2023 season with moderate to strong El Niño expected to develop and persist through October, TSR predicted that tropical activity for 2023 will be above average predicting 29 named storms, 19 typhoons and 13 intense typhoons.[4] The TSR remained constant with their prediction except slightly decreasing the intense typhoon numbers to 12 in the July forecast.[5]

Seasonal summary

Typhoon Doksuri (2023)Typhoon Mawar

Early season activity

The first two months were inactive, with no tropical cyclones formed. It started with a tropical depression on March 4, being the first system of the season, formed to the east of Singapore designated as 98S by the JTWC due to the agency analyzing the system as being located within the Southern Hemisphere.[8] It killed at least four people.[9] In early April, a depression formed and was named Amang, which became the first named storm by PAGASA. It made its first landfall in Panganiban, Catanduanes around 23:00. It made its second landfall over Presentacion, Camarines Sur and in the vicinity of Lagonoy, Camarines Sur later that day.[10] It was downgraded to a low on April 13 because of unfavorable conditions including dry air and high wind shear. Amang caused over ₱50.84 million (US$923 thousand)[nb 4] of agricultural damages throughout its path.[11] Another tropical depression formed on April 19, with JTWC giving it a high chance of developing into a tropical cyclone.[12] The agency upgraded the system to a tropical storm on April 20 and three hours later, the JMA assigned the name Sanvu, making it the first named storm of the season. Sanvu began to weaken on April 22 due to clusters of convection on its northeast quadrant absorbing its energy. The JTWC subsequently ceased issuing bulletins on the storm.

In early May, a tropical disturbance developed around 745 km (460 mi) east of Davao City, naming it as Invest 93W by the JTWC. The convection continued to broaden as it wrapped around the disorganized low pressure area. However, land interaction and the system's weak structure hindered further development, despite being in favorable environmental conditions.[13] Later on May 5, the JMA classified the disturbance as a tropical depression.[14] However, chances of being a tropical cyclone downgraded to low due to of presence of dry air and weak outflow before it dissipated on May 7.[15] A low-pressure area formed south-southwest of Chuuk Islands and then developed into a tropical depression on May 19.[16][17] It was later designated as 02W by the JTWC and named the storm "Mawar" a few hours later by the JMA before it intensified into a severe tropical storm on the next day. As it entered more favorable conditions and low wind shear, it was upgraded into category 1-equivalent typhoon by the JTWC. JMA followed suit and upgraded Mawar to Typhoon status at 03:45 UTC on May 21.[18] Mawar rapidly intensified into the season's first super typhoon, before undergoing an eyewall replacement cycle and slightly weakening as it passed through the Mariana Islands. After a close pass from Guam, Mawar regained super typhoon intensity and climaxed as a powerful Category 5 storm. It then entered the Philippine Area of Responsibility and was named Betty. Betty (Mawar) weakened later on due to dry air intrusions and unfavorable conditions, passing a hundred kilometers due east of the Batanes Islands and then weakening into a severe tropical storm as it made its way out of PAR. Mawar then began its extratropical transition as it shooted off to the northeast.

In the first weeks of June, a low-pressure area was formed north of Palau, naming the system as Invest 98W. At the following day, it intensified and entered the Philippine area of responsibility, prompting to name the PAGASA as Chedeng at 08:00 UTC.[19] The JTWC later followed suit and designated it as 03W. At 20:00 UTC, Chedeng was upgraded into a tropical storm, attaining the name Guchol. Guchol later became a strong Category 2 typhoon in the Philippine Sea, but the cold wake from Super Typhoon Mawar kept it from intensifying any further. As Guchol (Chedeng) exited the PAR, it weakened into a severe tropical storm, and continued northeastwards, avoiding the Japanese archipelago.

After weeks of inactivity, on July 12, the JTWC began monitoring a weak monsoon depression that is moving slowly towards northern Luzon. JMA followed suit and classified the disturbance as a tropical depression on the next day and took note that the system is just off the coast of Aurora, Philippines. PAGASA also started to issue advisories, which later named its local name Dodong.[20] On July 14, PAGASA noted that it made landfall in Dinapigue, Isabela.[21] As it become better organized and began moving over favorable environment, JTWC started to issue advisories on Dodong, with its designation as 04W.[22] Prior exiting the PAR, JMA later upgraded into Tropical Storm Talim as it moves away from the Philippines.

On July 16, a low pressure area which was originally a cloud cluster formed east of Mindanao.[23][24] On July 19, a tropical depression formed and the JTWC designated it as Invest 98W. It was immediately named as Doksuri by the JMA and Egay by the PAGASA on the next day.[25] On July 21, the system intensified into a tropical storm, and the very next day on July 22, the PAGASA upgraded it into a tropical storm.[26]

Systems

Tropical Depression Amang

Tropical depression (JMA)
 
DurationApril 10 – April 13
Peak intensity55 km/h (35 mph) (10-min);
1004 hPa (mbar)

The JMA first noted a low-pressure area in the Philippine Sea on April 7.[27] A strong convection to the north of the system's low-level circulation center (LLCC) prompted the JTWC to first issue a Tropical Cyclone Formation Alert (TCFA) on the disturbance as it tracked west-northwestwards into a favorable environment for further development.[28] Later that day, the JMA and the PAGASA classified the storm as a tropical depression.[29][30] As the storm formed within the Philippine Area of Responsibility (PAR), the depression received the name Amang.[30] Amang made its first landfall over Panganiban, Catanduanes around 23:00 PHT (15:00 UTC) on April 11.[31] Later the next day, the PAGASA reported that Amang had made a second landfall in Presentacion, Camarines Sur and later made its third landfall in Lagonoy, Camarines Sur.[32] Upon land interaction, the JTWC canceled its TCFA, stating that Amang had reached more unfavorable conditions including dry air and wind shear.[33] PAGASA downgraded the storm to a low on April 13.[34]

Agricultural damages caused by the storm were estimated at ₱50.84 million (US$923 thousand), affecting 1,569 farmers and 1,330 ha (3,300 acres) of land.[35] 1,918 passengers were stranded in the Bicol Region following sea travel suspensions.[36] On April 13, classes up to senior high school in 19 areas were suspended due to bad weather, along with pre-elementary classes in areas under Signal No. 1.[37]

Tropical Storm Sanvu

Tropical storm (JMA)
Tropical storm (SSHWS)
 
DurationApril 19 – April 22
Peak intensity85 km/h (50 mph) (10-min);
996 hPa (mbar)

An area of convection monitored by the JTWC spawned south-southeast of Pohnpei on April 18.[38] The JMA later classified the disturbance as a tropical depression the following day,[39] before the JTWC followed suit and designated the system 01W.[40] On April 20, the depression further intensified to a tropical storm, according to the JTWC,[41] after convection and rainbands strengthened over the LLCC.[42] The JMA subsequently upgraded its status by 6:00 UTC, and gave the name Sanvu to the storm.[43] After reaching its peak intensity early on April 21, Sanvu began to weaken afterward due to clusters of convection on its northeast quadrant absorbing its energy.[44] By April 22, Sanvu's poor, ragged structure of its circulation center prompted the JTWC to cease issuing bulletins on the storm as it was downgraded to a tropical depression.[45] The JMA cancelled advisories on the storm the same day as well.[46] The JMA tracked the system until 00:00 UTC of April 25.[47] The JTWC reported that Sanvu's remnants had dissipated on April 26.[48]

Typhoon Mawar (Betty)

Violent typhoon (JMA)
Category 5 super typhoon (SSHWS)
 
DurationMay 19 – June 3
Peak intensity215 km/h (130 mph) (10-min);
905 hPa (mbar)
Main article: Typhoon Mawar

On May 17, a weak low-level circulation (LLC) located 865 km (535 mi) south of Guam was marked by the JTWC. Global forecast models such as the Global Forecast System and Navy Global Environmental Model indicated that the disturbance would gradually intensify into a tropical cyclone in the upcoming days.[49] Later the JTWC issued a TCFA on the disturbance after thunderstorms became very wide and organization had improved.[50] The JMA also began tracking the system, marking it as LPA.[51] shortly before upgrading it to a tropical depression on May 19.[52] The JTWC followed suit on May 20 after the depression had strengthened from warm sea surface temperatures and poleward and westward outflow, designating it 02W.[53] The same day, the depression upgraded to a tropical storm. The JMA assigned the name Mawar to the storm.[54] The JMA further upgraded the storm to severe tropical storm status at 00:00 UTC of May 21,[55] as the deep convection in the CDO completely obscured the LLCC.[56] Both the JMA and JTWC upgraded Mawar to a typhoon on May 21.[57][58] Mawar underwent an eyewall replacement cycle.[59] But despite usually causing the storm to weaken, the typhoon strengthened even further into a super typhoon, after reaching winds of 250 km/h (155 mph).[60] During May 24, the center of Mawar passed about north of the northern tip of Guam, around 9 p.m. local time and slightly weakened.[61][62] Soon afterwards, Mawar reached its peak intensity, attaining 1-minute sustained winds of 295 km/h (185 mph), equivalent to Category 5 strength on the SSHWS,[63] and 10-minute sustained winds of 215 km/h (130 mph) along with the barometric pressure of 905 hPa (26.72 inHg).[64] Mawar entered the PAR, which PAGASA assigned it the name Betty.[65] Mawar slightly weakened moving around the southwestern edge of the subtropical high.[66] As a result, Mawar weakened into a severe tropical storm as the JMA reported on May 31,[67] before exiting the PAR on June 1.[68] Mawar become a tropical storm on June 2, as it approached Okinawa.[69][70][71] On June 3, Mawar became an extratropical cyclone south of Honshu, as it moved towards the open Pacific.[72]

Power outages began affecting parts of Guam on May 22 as winds from Mawar intensified.[73] Guam International Airport also recorded winds up to 104.7 miles per hour (168.5 km/h) as Mawar impacted the island.[74][75] The Weather Prediction Center recorded that multiple locations in Guam received at least 20 inches (51 cm) of rain during Typhoon Mawar, with most of it falling in just three hours.[76] At least 8,900 homes experienced power outages in Japan.[77] In the Philippines, (locally known as Betty) caused a warehouse to collapse which is the only reported damage, there was one person who suffered a minor injury was reported.[78][79] The NDRRMC reported 30,506 affected people.[80] In addition, 23 houses were damaged (with 5 houses totally destroyed).[80][81] Agricultural damages are estimated by the NDRRMC at ₱133,000[80] with infrastructural damages estimated at ₱68,696.[80] In total, the NDRRMC estimates at least ₱201,696 (US$3,585) in damages.[80]

Typhoon Guchol (Chedeng)

Typhoon (JMA)
Category 2 typhoon (SSHWS)
 
DurationJune 5 – June 12
Peak intensity140 km/h (85 mph) (10-min);
970 hPa (mbar)

A low-pressure area north of Palau developed into a tropical depression late on June 5.[82] The following day, it intensified into a tropical depression and entered the Philippine Area of Responsibility, prompting PAGASA to name the system as Chedeng at 08:00 UTC.[83] The JTWC later followed suit and designated as 03W.[84] The JMA later upgraded the system into a tropical storm, assigning the name Guchol. On June 8, JMA further upgraded the storm to a severe tropical storm at 09:00 UTC as it became more organized due to favorable conditions and low wind shear. Later that same day, the JMA upgraded Guchol into a typhoon at 21:00 UTC. It reached its peak intensity, achieved the 1-minute sustained winds of 90 knots (165 km/h; 105 mph) along with its barometric pressure of 956 hPa (28.23 inHg), equivalent to Category 2-typhoon by the SSHWS and 10-minute sustained winds up to 140 km/h (85 mph). On June 11, Guchol weakened while it was moving away the Philippines due to its cold wake from Typhoon Mawar. JMA later downgraded into severe tropical storm on June 12, moving northeastwards without affecting the Japanese archipelago.[85] Both JMA and JTWC issued its last advisory as Guchol became an extratropical cyclone.

Although Guchol didn't affect land, it enhanced the southwest monsoon over the Western parts of Luzon and Visayas.[86]

Severe Tropical Storm Talim (Dodong)

Severe tropical storm (JMA)
Category 2 typhoon (SSHWS)
 
DurationJuly 13 – July 18
Peak intensity110 km/h (70 mph) (10-min);
970 hPa (mbar)

On July 12, the JTWC began tracking a weak monsoon depression 298 nautical miles (552 km; 343 mi) east of Manila, slowly moving towards northern Luzon.[87] On July 13, the JMA took note of a low-pressure area just off the coast of Aurora, Philippines.[88] A few hours later at 12:00 UTC, the JMA recognized the formation of a tropical depression.[89] The PAGASA issued a similar announcement, and subsequently named the system Dodong.[90] It made landfall in Dinapigue, Isabela a few hours later.[91] The system continued to track westward close to the northern edge of mainland Luzon, crossing through Cagayan and Ilocos Norte.[92] It emerged off the coast of Ilocos Norte on July 14 at 09:00 UTC (17:00 PHT).[93] Around 15:00 UTC, the JTWC began issuing advisories for the now-tropical depression, and designated the system as 04W.[22] The system intensified into a tropical storm just prior to exiting the PAR and was subsequently named Talim by the JMA.[94][95][96] On July 15, Talim left the PAR while it maintained its strength which was announced by the PAGASA in its final bulletin.[97] JMA later upgraded into a severe tropical storm category at 00:00 UTC on July 16.[98] On 18:00 UTC, the JTWC upgraded Talim to a category 1 typhoon.[99] At 22:20 CST on July 17, Talim made landfall at Zhanjiang, China in Guangdong Province, according to China Meteorological Administration, with 2-minute sustained winds of 137 km/h (85 mph).[100] Talim then moved into the Gulf of Tonkin and made the second, final landfall in Beihai, Guangxi at 05:45 CST on July 17.[101] At 03:00 UTC the next day, the JTWC downgraded it to a tropical storm and issued a final warning,[102] and subsequently revised the peak intensity at 06:00 UTC on July 17 to 85 knots, equivalent to a Category 2 typhoon. The JMA, however, operationally classified this as a severe tropical storm.[103] At 06:00 UTC, the JMA downgraded it to a tropical storm.[104] At 12:00 UTC, JMA further downgraded it to a tropical depression[105], with the JTWC following suit on 00:00 UTC the next day.

Winds from Talim enhanced the East Asian monsoon over the Philippines and brought heavy rainfall and gusty conditions over the country as it neared Luzon.[106] Classes in three cities and in Cagayan were suspended as the storm crossed Luzon.[107] Three domestic flights were cancelled.[108] One person was killed by the storm. Rainfall from the storm helped raised the water level significantly in Angat Dam, the main water source for areas in Metro Manila, but only slightly in more northern Magat Dam in Isabela.[109][110] Earlier in the month, both dams neared critical levels as rainfall decreased from the onset of El Niño conditions.[111][112] CMA raised an Orange typhoon alert, expected to bring gales and torrential rains in some areas in Southern China.[113] On July 17, at 00:40 UTC, Hong Kong Observatory issued Signal No. 8 as it approaches the city and winds strengthened further.[114] Nearly 230,000 people were evacuated from Guangdong before the typhoon made landfall. Multiple railway services and flights from Nanning were cancelled in preparation of the storm.[115]On the same day at 03:00 UTC, Vietnam's National Center for Hydro-Meteorological Forecasting issued "Disaster Risk Level No. 3" alert for the Gulf of Tonkin and their northern coastal provinces.[116] Earlier, the Government of Vietnam sent a telegram to northern provinces' governments in order to urged them to make their prevention against Talim.

Typhoon Doksuri (Egay)

Main article: Typhoon Doksuri (2023)
Typhoon Doksuri (Egay)
Satellite image of Typhoon Doksuri (Egay)
Satellite image
 Forecast map for Typhoon Doksuri (Egay)
Forecast map
Current storm information
As of00:00 UTC, July 27
Location20°42′N 119°48′E / 20.7°N 119.8°E / 20.7; 119.8 (2023 Pacific typhoon season)
282 nautical miles (520 km; 325 mi) SSW of Taipei, Taiwan
MovementN at 7 kn (13 km/h; 8 mph)
Currently-active
Typhoon
10-minute sustained (JMA)
Sustained winds150 km/h (90 mph)
Gusts215 km/h (130 mph)
Pressure955 hPa (mbar); 28.20 inHg
Currently-active
Category 1-equivalent typhoon
1-minute sustained (SSHWS/JTWC)
Sustained winds150 km/h (90 mph)
Gusts175 km/h (110 mph)
Pressure963 hPa (mbar); 28.44 inHg

On July 19, JMA began tracking a low pressure area in the Philippine Sea, east of Mindanao.[117] The agency noted its formation into a tropical depression by July 20; JTWC would then release a TCFA on the storm later that day.[118] On July 21, the system intensified into a tropical storm and was named Doksuri; the PAGASA also noted the storm's formation and locally named it Egay.[119][120] The JTWC subsequently initiated advisories on the system and classified it as 05W.[121] Doksuri slightly intensified as it tracked northwestward across the following day.[121] At 12:00 UTC on July 23, Doksuri began to rapidly intensify as it reached typhoon status over the Philippine Sea.[122][123][124] PAGASA declared Doksuri a super typhoon[125] [126][127] Doksuri traversed through the extreme northern Philippines across the night, weakening into a typhoon and later making landfall at Fuga Island in Aparri, Cagayan.[128][129] Though atmospheric conditions made further development favorable, interaction with land and some dry air around the system suppressed development. As it approached and tracked further westward through the Babuyan Islands, it maintained its intensity.[130] Doksuri made a second landfall over Dalupiri Island on July 26.[131] Doksuri left the PAR at around 10:00 PHT (02:00 UTC) on July 27.[77]

In the Philippines, PAGASA began raising Tropical Cyclone Wind Signals for parts of northern Luzon.[132] Several flights were canceled because of the typhoon.[133] After reaching super typhoon status on the morning of July 25, the agency raised Signal No. 4 in extreme northern parts of Luzon.[134] Later on the same day, the agency further raised the signal into Signal No. 5 in the eastern portion of Babuyan Islands.[135] Doksuri enhanced the existing southwest monsoon, causing widespread rains and showers over most of the Philippines.[136] Doksuri is attributed with five unconfirmed deaths and another two unconfirmed injuries.[137] In Tawain, More than 300 people were evacuated in southern and eastern Taiwan as a precaution as Doksuri was expected to bring up to 1 metre (3.3 feet) of rainfall.[138]

Current storm information

Tropical Depression 06W

Tropical Depression 06W
Satellite image of Tropical Depression 06W
Satellite image
 Forecast map for Tropical Depression 06W
Forecast map
Current storm information
As of00:00 UTC, July 27
Location11°18′N 140°00′E / 11.3°N 140.0°E / 11.3; 140.0 (2023 Pacific typhoon season)
MovementN at 7 kn (13 km/h; 8.1 mph)
Currently-active
Tropical depression
10-minute sustained (JMA)
Sustained winds55 km/h (35 mph)
Gusts85 km/h (50 mph)
Pressure1002 hPa (mbar); 29.59 inHg
Currently-active
Tropical depression
1-minute sustained (SSHWS/JTWC)
Sustained winds45 km/h (30 mph)
Gusts55 km/h (35 mph)
Pressure1003 hPa (mbar); 29.62 inHg

Current storm information

As of 00:00 UTC July 27, the tropical depression is located near 11°18′N 140°00′E / 11.3°N 140.0°E / 11.3; 140.0 (TD). Maximum 10-minute sustained winds are at 30 knots (55 km/h; 35 mph), with gusts up to 45 knots (85 km/h; 50 mph), while maximum 1-minute sustained winds are at 25 knots (45 km/h; 30 mph). The minimum central barometric pressure is 1004 hPa (29.65 inHg), and the system is moving north at 7 kn (13 km/h; 8.1 mph).

For the latest official information, see:

Other systems

See also: List of tropical cyclones near the Equator
A tropical depression over Palawan on May 5.
  • According to the JMA, a tropical depression formed to the east of Singapore on March 4.[139] It was designated 98S by the JTWC shortly afterwards, due to the agency analyzing the system as being located within the Southern Hemisphere.[140] The system was last noted on March 7.[141] 50,000 people were affected in Malaysia from the floods produced by the system, which also killed four people.[9]
  • On May 1, a tropical disturbance persisted around 740 km (460 mi) east of Davao City and had fragmented but organized rainbands to the north and west of its circulation center.[142] The convection continued to broaden as it wrapped the disorganized LLCC. However, land interaction with the Philippines and the system's weak structure hindered further development, despite being in favorable environmental conditions.[143] On May 5, the JMA classified the disturbance as a tropical depression.[144] However, dry air and a weak outflow aloft showed that the depression had very little development, all while tracking west-northwestward.[145] The depression later dissipated by May 7.[146][147]
  • On June 7, the JMA detected a broad area of circulation associated with a tropical disturbance north of Hainan. The agency dubbed it a tropical depression shortly after. However, by the next day, the system moved over China and the circulation center began deteriorating. The system was last noted on 18:00 UTC of June 11. Persistent rainfall in Guangxi caused the Baisha River to flood multiple villages in Hepu County. Firefighters used boats to rescue residents trapped in their homes. A total of 2,603 people required evacuation.[148] On June 9, Vietnam's National Center for Hydrometeorological Forecasting (NCHMF) issued "Potential Tropical Depression Alert" in the Gulf of Tonkin, which warned the resurgence of this tropical depression but then discontinue monitoring on June 10.

Storm names

See also: Tropical cyclone naming and History of tropical cyclone naming

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.[149] 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).[150] 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.[149] The names of significant tropical cyclones are retired, by both PAGASA and the Typhoon Committee.[150] 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. The names of significant tropical cyclones will be retired by both PAGASA and the Typhoon Committee in the spring of 2024.[150]

International names

Main article: List of retired Pacific typhoon names

A tropical cyclone is named when it is judged to have 10-minute sustained windspeeds of 65 km/h (40 mph).[151] 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.[152] Retired names, if any, will be announced by the WMO in 2024; though replacement names will be announced in 2025. The next 28 names on the naming list are listed here along with their international numeric designation, if they are used.

  • Sanvu (2301)
  • Mawar (2302)
  • Guchol (2303)
  • Talim (2304)
  • Doksuri (2305) (active)
  • Khanun (unused)
  • Lan (unused)
  • Saola (unused)
  • Damrey (unused)
  • Haikui (unused)
  • Kirogi (unused)
  • Yun-yeung (unused)
  • Koinu (unused)
  • Bolaven (unused)
  • Sanba (unused)
  • Jelawat (unused)
  • Ewiniar (unused)
  • Maliksi (unused)
  • Gaemi (unused)
  • Prapiroon (unused)
  • Maria (unused)
  • Son-Tinh (unused)
  • Ampil (unused)
  • Wukong (unused)
  • Jongdari (unused)
  • Shanshan (unused)
  • Yagi (unused)
  • Leepi (unused)

Philippines

Main article: List of retired Philippine typhoon names

This season, PAGASA will use its own naming scheme for storms that develop in or enter their self-defined area of responsibility.[153] During this season, PAGASA is using the following list of names, that was last used during 2019 and will be used again in 2027, updated with replacements of retired names, if any.[153] All of the names are the same as in 2019 except Tamaraw and Ugong, which replaced the names Tisoy and Ursula after they were retired.[153]

  • 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)
  • Tamaraw (unused)
  • Ugong (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 2023. The tables also provide an overview of a system's intensity, duration, land areas affected, and any deaths or damages associated with the system.

Name Dates Peak intensity Areas affected Damage
(USD) 		Deaths Refs
Category Wind speed Pressure
TD March 4–7 Tropical depression 55 km/h (35 mph) 1008 hPa (29.77 inHg) Brunei, Indonesia, Malaysia, Singapore Unknown 4 [154]
Amang April 10–13 Tropical depression 55 km/h (35 mph) 1004 hPa (29.65 inHg) Palau, Philippines $923,000 None [35]
Sanvu April 19–22 Tropical storm 85 km/h (50 mph) 996 hPa (29.41 inHg) Federated States of Micronesia None None
TD May 5–7 Tropical depression Not specified 1004 hPa (29.65 inHg) Philippines None None
Mawar (Betty) May 19 – June 3 Violent typhoon 215 km/h (130 mph) 905 hPa (26.72 inHg) Federated States of Micronesia, Guam, Northern Mariana Islands, Philippines, Ryukyu Islands $136 million 6 [155][80][156]
Guchol (Chedeng) June 5–12 Typhoon 140 km/h (85 mph) 970 hPa (28.64 inHg) None None None
TD June 7–11 Tropical depression Not specified 1000 hPa (29.53 inHg) South China, Vietnam None None
Talim (Dodong) July 13–18 Severe tropical storm 110 km/h (70 mph) 970 hPa (28.64 inHg) Philippines, South China, Vietnam $5.46 million 2 [157]
Doksuri (Egay) July 19–present Very strong typhoon 185 km/h (115 mph) 925 hPa (27.32 inHg) Philippines $40,258 6 [158]
TD July 26– present Tropical depression 55 km/h (35 mph) 1004 hPa (29.65 inHg) None None None
Season aggregates
10 systems March 4 – Season ongoing 215 km/h (130 mph) 905 hPa (26.72 inHg) $142 million 18

See also

Notes

  1. ^ a b A super typhoon is an unofficial category used by the Joint Typhoon Warning Center (JTWC) for a typhoon with winds of at least 240 km/h (150 mph).[3]
  2. ^ The Japan Meteorological Agency is the official Regional Specialized Meteorological Center for the western Pacific Ocean.
  3. ^ The Joint Typhoon Warning Center is a joint United States Navy – United States Air Force task force that issues tropical cyclone warnings for the western Pacific Ocean and other regions.[2]
  4. ^ All damage totals are valued as of 2023 and in United States dollars, unless otherwise noted.

References

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External links

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