2024 Pacific typhoon season

The 2024 Pacific typhoon season is an ongoing event in the annual cycle of tropical cyclone formation in the western Pacific Ocean. It is the fifth-latest starting Pacific typhoon season on record. The season runs throughout 2024, though most tropical cyclones typically develop between May and October. The season's first named storm, Ewiniar, developed on May 25, and eventually intensified into the first typhoon of the season.

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 if it has 10-minute sustained wind speeds of at least 65 km/h anywhere in the basin. 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) 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, Vietnam's National Center for Hydro-Meteorological Forecasting and Taiwan's Central Weather Bureau.

Tropical Storm Risk (TSR) released their first forecast on May 7, predicting below average activity with 25 named storms, 15 typhoons and 7 intense typhoons. This was primarily due to the dominant El Niño event at the time, which was expected to transition into a weak or moderate La Niña by mid-2024. In their July forecast, they slightly decreased the amount of storms and typhoons.

Early activity
The Pacific typhoon season began abnormally late, with no systems forming for five months until May 22, when a tropical storm named Ewiniar formed southeast of Palau, marking it as the fifth-latest start of a Pacific typhoon season since reliable records began. Ewiniar tracked toward the Philippines, where it made nine landfalls in Homonhon Island; Giporlos, Eastern Samar; Basiao Island; Cagduyong Island; Batuan, Masbate; Masbate City; Torrijos, Marinduque; Lucena, Quezon and Patnanungan. It began to move over the warm tropical waters of Lamon Bay, where the JTWC and the JMA upgraded Ewiniar into a minimal typhoon. Ewiniar began to deteriorate as it moved away from land due to its topographical effects from the island. On May 30, another tropical depression formed southeast of Haikou, China. The next day, at 03:00 UTC, JTWC designated the disturbance as Tropical Depression 02W. A few hours later, JMA assigned the name Maliksi as they upgraded 02W into a tropical storm. Shortly after being named, on May 31, Maliksi made landfall in Southern China. the JMA and JTWC discontinued warnings as Maliksi moved inland and dissipated on June 2. No storms formed in June for the first time since 2010.

After many weeks of inactivity, on July 13, a tropical depression formed east of Vietnam. Shortly after, it tracked into Vietnam, dissipating soon after. On July 19, two tropical disturbances were recognized by the JTWC: one southeast of Manila and another east of Palau. Soon after, the both disturbances developed into a depression, being named by PAGASA. The first one, west of Batangas, was named Butchoy while the second, east of Virac, was named Carina. Later that day, the JTWC followed suit in designating them both as depressions. The next day, the easternmost disturbance was named Gaemi by the JMA. On July 21, 04W also intensified into a tropical storm, assigning the name Prapiroon from the JMA.

Typhoon Ewiniar (Aghon)
On May 21, the Joint Typhoon Warning Center (JTWC) began tracking an area of atmospheric convection 238 nmi southeast of Palau, noting that the system was moving northwestward towards an environment favorable for tropical cyclogenesis. The JTWC subsequently issued a Tropical Cyclone Formation Alert (TCFA) on the following day as the disturbance developed rainbands wrapping from the southwest. At 18:00, the disturbance was upgraded into a tropical depression. The depression would later enter PAR, assigning the name Aghon, a replacement name for Ambo. At 18:00 UTC, the JTWC designated the depression as 01W, based on surface observations from Guiuan. Aghon made landfall over Homonhon Island and subsequently Giporlos, Eastern Samar in the early morning of May 25 (PHT). It made five more landfalls over Basiao and Cagduyong Islands of Catbalogan; Batuan in Ticao Island; Masbate City; and Torrijos, Marinduque. At 12:00 UTC, 01W intensified into a tropical storm while it was still in Tayabas Bay, prompted the JMA to name the storm as Ewiniar. In the morning of May 26 (PHT), the storm made its eighth landfall over Lucena, Quezon in Luzon island. Ewiniar later intensified into a minimal-equivalent typhoon over Lamon Bay The storm made its final landfall over Patnanungan in the Polillo Islands. The typhoon left the PAR on May 29 and continued to deteriorate due to subsidence around the mid-latitude. Shortly afterwards, it passed directly over the island of Minamidaitōjima. The next day, Ewiniar transitioned into an extratropical cyclone south-southwest of Yokosuka, Japan. At 18:00 UTC on May 31, the JTWC then ceased issuing advisories on the system as it entered the baroclinic zone and an area of high wind shear.

Agricultural damage in the Philippines totalled. Damage to infrastructure was valued a  for a total of. Overall, Typhoon Ewiniar killed six people and left eight injured, and around 152,266 others were directly impacted by Ewiniar in the Philippines.

Tropical Storm Maliksi
On May 29, the JTWC began tracking an area of convection located 219 nmi southeast of Haikou, China. Being in an area of warm waters and low vertical shear and having southerly outflow, the system sustained a weak circulation, inhibited from development by another area of convection near Mainland China. It was recognized as a low-pressure area by the JMA early the next day, before the agency upgraded it to a tropical depression at 06:00 UTC. Later that day, the JTWC issued a TCFA on the depression since it had rapidly developed. At 00:00 UTC the next day, the JTWC upgraded the system into a tropical depression, designating it as 02W. Later, the JMA upgraded it into a tropical storm, and it was given the name Maliksi. However, the JTWC reported that it did not intensify into a tropical storm as it was disorganized, with the circulation elongating. At 21:00 UTC on May 31, the JTWC discontinued warnings on the system as it made landfall in Southern China. Soon after, the JMA downgraded Maliksi into a depression before being further downgraded by the agency as a low-pressure area as it tracked inland on June 2.

On May 30, the Hong Kong Observatory issued a No. 1 standby signal as the depression neared Hong Kong. The next day, it upgraded the warnings into a No. 3 Strong Wind signal. Although it was likely to not directly affect Taiwan, the Central Weather Administration noted that Maliksi's remnants were likely to merge with a frontal system and bring heavy rains to Taiwan over the weekend. In Macau, the storm caused unstable weather, with the Meteorological and Geophysical Bureau issuing Typhoon Signal No. 3 In China, torrential rainfall occurred, peaking at 272.3 mm somewhere in the Leizhou Peninsula. Additionally, heavy rain was recorded in Fujian, Zhejiang and Jiangxi.

Tropical Depression 03W
On July 13, the JTWC began tracking an area of convection 368 nmi east-southeast of Da Nang, Vietnam. At the time, the disturbance was in a marginal environment for development, with high vertical wind shear offsetting good divergence aloft alongside warm sea surface temperatures. At 06:00 UTC of that day, the JMA designated the system as a tropical depression. The JTWC then issued a TCFA on the system the next day, noting its symmetrical center had improved as it moves northwest, though convection was disorganized. By 18:00 UTC the next day, the JTWC upgraded the system into a tropical depression, designating it 03W. However, they issued their last warning on the depression early the next day as it moved over Vietnam and rapidly weakened. Later that day, the JMA stopped tracking the depression as it dissipated.

Tropical Storm Prapiroon (Butchoy)
On July 15, the JTWC began tracking an area of convection 623 NM southeast of Manila, Philippines. At the time, the disturbance was in a favorable environment for development, with low vertical wind shear, good equatorward outflow, and warm SSTs. At 06:00 UTC the same day, the JMA designated the system as a low-pressure area. Several days later, the low crossed into the South China Sea. On July 19, the JTWC gave a TCFA to the disturbance, citing a high chance of development within 24 to 48 hours. Shortly after, the JMA designated it as a depression. PAGASA followed suit a few hours later, recognizing the system as a tropical depression and naming it Butchoy. Soon after, the JTWC designated the system as Tropical Depression 04W. However, the next day, Butchoy exited the PAR, causing PAGASA to stop tracking the system. Early on July 21, Butchoy intensified into a tropical storm, being named Prapiroon by the JMA.

While Prapiroon was a tropical disturbance, it enhanced the southwest monsoon for the Philippines, killing eight and causing around in damages.

Severe Tropical Storm Gaemi (Carina)
On July 17, the JMA began tracking a low-pressure area east of Palau. Two days later, the JTWC began tracking the system. Shortly after, they issued a TCFA on the system, stating that it was in favorable conditions with low vertical wind shear. Shortly after, the JMA designated it as a depression. PAGASA followed suit a few hours later, recognizing the system as a tropical depression and naming it Carina. Soon after, the JTWC designated the system as Tropical Depression 05W. Early the next day, the tropical depression intensified into a tropical storm, and was given the name Gaemi by the JMA. Intensifying due to being in a conducive environment for developing, on July 21, Gaemi became a severe tropical storm.

Storm names
Within the basin, 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 when they have 10-minute sustained winds of 65 km/h.

PAGASA names tropical cyclones which are active in their area of responsibility located between 135°E and 115°E and between 5°N and 25°N even if the cyclone has already been named. The names of significant tropical cyclones are retired by both PAGASA and the Typhoon Committee. If the list of names for the Philippine region are exhausted, then names will be taken from an auxiliary list of which the first ten are published each season. Unused names are marked in. The names of significant tropical cyclones will be retired by both PAGASA and the Typhoon Committee in the spring of 2025.

International names
A tropical cyclone is named when it has 10-minute sustained winds of 65 km/h. 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 2025, though replacement names will be announced in 2026. 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 for storms that are active in their self-defined area of responsibility. During this season, PAGASA is using the following list of names that was last used during 2020 and will be used again in 2028, updated with replacements of retired names, if any. All of the names are the same as in 2020 except Aghon, Querubin, Romina and Upang, which replaced the names Ambo, Quinta, Rolly and Ulysses after they were retired. The name Aghon was used for the first time this year.

Auxiliary list

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 2024. The tables also provide an overview of a system's intensity, duration, land areas affected, and any deaths or damages associated with the system.


 * Ewiniar (Aghon) || May 22–30 || style="background:#" |Typhoon || style="background:#" | 70 kn || style="background:#" |980 hPa || Philippines, Japan, Alaska || $20.88 million || ||
 * Maliksi || May 30 – June 2 || style="background:#" |Tropical storm || style="background:#" | 35 kn || style="background:#" |998 hPa || South China, Taiwan || Unknown || None ||
 * 03W || July 13–15 || style="background:#" |Tropical depression || style="background:#" | 30 kn || style="background:#" |1000 hPa || Vietnam, Laos, Thailand || None || None ||
 * Prapiroon (Butchoy) || July 19 – Present || style="background:#" |Tropical storm || style="background:#" | 40 kn || style="background:#" |996 hPa || Philippines, Vietnam || || 8 ||
 * Gaemi (Carina) || July 19 – Present || style="background:#" |Severe tropical storm || style="background:#" | 55 kn || style="background:#" |990 hPa || None || None || None ||
 * 03W || July 13–15 || style="background:#" |Tropical depression || style="background:#" | 30 kn || style="background:#" |1000 hPa || Vietnam, Laos, Thailand || None || None ||
 * Prapiroon (Butchoy) || July 19 – Present || style="background:#" |Tropical storm || style="background:#" | 40 kn || style="background:#" |996 hPa || Philippines, Vietnam || || 8 ||
 * Gaemi (Carina) || July 19 – Present || style="background:#" |Severe tropical storm || style="background:#" | 55 kn || style="background:#" |990 hPa || None || None || None ||
 * Gaemi (Carina) || July 19 – Present || style="background:#" |Severe tropical storm || style="background:#" | 55 kn || style="background:#" |990 hPa || None || None || None ||
 * Gaemi (Carina) || July 19 – Present || style="background:#" |Severe tropical storm || style="background:#" | 55 kn || style="background:#" |990 hPa || None || None || None ||