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===October===
===October===
[[File:Kompasu 2021-10-13 0600Z.jpg|thumb|[[Tropical Storm Kompasu (2021)|Severe Tropical Storm Kompasu]]]]
[[File:Pamela_2021-10-12_0850Z.jpg|thumb|[[2021 Pacific hurricane season#Hurricane Pamela|Hurricane Pamela]]]]
So far, October has featured five storms, with four of them being named. <!-- Nando isn't included because it's named by the PAGASA not by the JMA--> In the East Pacific, [[2021 Pacific hurricane season#Hurricane Pamela|Pamela]] formed on the southern coast of [[Zihuatanejo]], It then intensified into a hurricane despite struggling. The storm made landfall in [[Sinaloa]] and then rapidly weakened to a tropical depression. In the West Pacific, Tropical storms [[Tropical Storm Lionrock (2021)|Lionrock]], [[Tropical Storm Kompasu (2021)|Kompasu]], and [[2021 Pacific typhoon season#Tropical Storm Namtheun|Namtheun]] formed. It also included a tropical depression that was named [[2021 Pacific typhoon season#Tropical Depression Nando|Nando]] by the PAGASA. [[Tropical Storm Lionrock (2021)|Lionrock]] struck [[Hong Kong]], [[Southern China]] and [[Vietnam]]. [[Tropical Storm Kompasu (2021)|Kompasu]] also effected the same area where Lionrock struck a week prior. The storm caused severe damage and loss of lives. Nando formed east of another depression which was developing. It then merged with the depression into the formation of Kompasu.
So far, October has featured five storms, with four of them being named. <!-- Nando isn't included because it's named by the PAGASA not by the JMA--> In the East Pacific, [[2021 Pacific hurricane season#Hurricane Pamela|Pamela]] formed on the southern coast of [[Zihuatanejo]], It then intensified into a hurricane despite struggling. The storm made landfall in [[Sinaloa]] and then rapidly weakened to a tropical depression. In the West Pacific, Tropical storms [[Tropical Storm Lionrock (2021)|Lionrock]], [[Tropical Storm Kompasu (2021)|Kompasu]], and [[2021 Pacific typhoon season#Tropical Storm Namtheun|Namtheun]] formed. It also included a tropical depression that was named [[2021 Pacific typhoon season#Tropical Depression Nando|Nando]] by the PAGASA. [[Tropical Storm Lionrock (2021)|Lionrock]] struck [[Hong Kong]], [[Southern China]] and [[Vietnam]]. [[Tropical Storm Kompasu (2021)|Kompasu]] also effected the same area where Lionrock struck a week prior. The storm caused severe damage and loss of lives. Nando formed east of another depression which was developing. It then merged with the depression into the formation of Kompasu.
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Revision as of 19:26, 19 October 2021

Tropical cyclones in 2021
Year summary map
Year boundaries
First systemImogen
FormedJanuary 1, 2021
Strongest system
NameSurigae
Lowest pressure895 mbar (hPa); 26.43 inHg
Longest lasting system
NameHabana, Omais and Sam
Duration14 days
Year statistics
Total systems131
Named systems81
Total fatalities753 total
Total damage$61.384 billion (2021 USD)
Related articles
Other years
2019, 2020, 2021, 2022, 2023

In 2021, tropical cyclones have formed in six major bodies of water, commonly known as tropical cyclone basins. Tropical cyclones will be assigned names by various weather agencies if they attain maximum sustained winds of 35 knots (65 km/h; 40 mph). During this year, 131 systems have formed and 81 were named, including one subtropical depression and excluding one system, which was unofficial. One storm was given two names by the same RSMC. So far, the most intense storm of the year was Typhoon Surigae, with maximum 10-minute sustained wind speeds of 220 km/h (140 mph) and a minimum pressure of 895 hPa (26.43 inHg). The deadliest tropical cyclone so far was Cyclone Seroja, which caused 272 fatalities in Indonesia, while the costliest so far was Hurricane Ida, which caused an estimated $65.25 billion USD in damage after striking Louisiana and the Northeastern United States.

Tropical cyclones are primarily monitored by a group of ten warning centers, which have been designated as a Regional Specialized Meteorological Centre (RSMC) or a Tropical Cyclone Warning Center (TCWC) by the World Meteorological Organization. These are the United States National Hurricane Center (NHC) and Central Pacific Hurricane Center, the Japan Meteorological Agency (JMA), the Indian Meteorological Department (IMD), Météo-France (MFR), Indonesia's Badan Meteorologi, Klimatologi, dan Geofisika, the Australian Bureau of Meteorology (BOM), Papua New Guinea's National Weather Service, the Fiji Meteorological Service (FMS) as well as New Zealand's MetService. Other notable warning centers include the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA), the United States Joint Typhoon Warning Center (JTWC), and the Brazilian Navy Hydrographic Center(BNHC).

Three tropical cyclones simultaneously active in the North Atlantic on August 16: Fred (left), nearing landfall in the Florida Panhandle; Grace (bottom), south of Hispaniola; and the tropical depression which would eventually become Henri (upper right), near Bermuda

Global atmospheric and hydrological conditions

Three tropical cyclones present in the East Pacific simultaneously on August 2. From right to left; Ignacio, Hilda, and a disturbance that later became Jimena.

The La Niña from the previous year persisted into 2021,[1] though by March and April it had begun to weaken.[2][3] On May 13, the National Oceanic and Atmospheric Administration (NOAA) assessed that the El Niño–Southern Oscillation (ENSO) transitioned into its neutral phase.[4] However, following cooler than normal temperatures in the tropical eastern Pacific Ocean, NOAA declared that the global weather conditions shifted back to La Niña by October.[5]

Two systems, Tropical Depression 05 and Severe Tropical Storm Danilo persisted into 2021 after developing within the South-West Indian Ocean during December 2020. The COVID-19 pandemic disrupted responses and recovery in areas affected by tropical cyclones.[6][7]


Summary

Tropical Storm Kompasu (2021)Tropical Storm Lionrock (2021)Cyclones Gulab and ShaheenCyclones Gulab and ShaheenTropical Storm DianmuHurricane Nicholas (2021)Hurricane Olaf (2021)Typhoon Chanthu (2021)Tropical Storm Conson (2021)Hurricane LarryHurricane IdaHurricane Nora (2021)Hurricane HenriHurricane GraceTropical Storm Fred (2021)Tropical Storm Lupit (2021)Tropical Storm CempakaTyphoon In-faHurricane ElsaTropical Storm Danny (2021)Hurricane Enrique (2021)Tropical Storm Claudette (2021)Tropical Storm Dolores (2021)Tropical Storm KogumaTropical Storm Choi-wan (2021)Cyclone YaasCyclone TauktaeTyphoon SurigaeCyclone SerojaCyclone NiranTropical Storm Dujuan (2021)Cyclone GuambeCyclone AnaCyclone KimiCyclone EloiseCyclone Imogentropical cyclone basins

North Atlantic Ocean

2021 Atlantic hurricane season summary map

On May 22, a subtropical storm formed east of Bermuda, with the NHC assigning it the name Ana. The formation of Ana marked the seventh consecutive year in which a named storm formed before the official start date in the North Atlantic basin. Later on May 23, Ana transitioned into a tropical storm. Soon thereafter, the storm encountered unfavorable conditions, which resulted in its dissipation by the next day. On June 14, a non-tropical low offshore the coast of North Carolina quickly intensified to a tropical storm, being assigned the name Bill by the NHC. On June 11, a low-pressure area formed in the Gulf of Mexico. The low-pressure area started moving over favorable conditions, which prompted the NHC to mark the system as Potential Tropical Cyclone Three. The system gradually intensified into a tropical storm and was given the name Claudette before making landfall on the Louisiana coast. It then entered into the Atlantic Ocean on June 22, before dissipating by the same evening. On 28 June, a low pressure area rapidly intensified into Tropical Storm Danny despite being located in an unfavorable high pressure area. It made landfall over South Carolina and dissipated by the next day. On July 1, another tropical depression has formed in the Atlantic's Main Development Region (MDR), and it further intensified into Tropical Storm Elsa by the same evening. Elsa later intensified into a category 1 hurricane near Barbados. It later trekked through the Caribbean Sea as Elsa made landfall in Cuba on July 5. The storm passed by The Florida Keys during the early hours of July 6. Elsa briefly became a low-end Category 1 hurricane before it weakened to a tropical storm again that night and continued to weaken until it made landfall in Florida. Elsa continued to weaken as it moved over the East Coast, The storm later became extratropical. After a long period of inactivity, on August 11, Tropical Storm Fred formed. It made landfall in Hispaniola before making landfall in Cuba and dissipating. Fred then re-formed the next day, and then made landfall in Florida on August 16. It dissipated on August 18. While Fred was near Cuba, Tropical Storm Grace formed. Grace passed near Hispaniola and became a tropical depression. It re-intensified to a tropical storm, before further intensifying into a hurricane. Grace made landfall over the Yúcatan before dropping to tropical storm status. It rapidly intensified to a Category 3 hurricane, and made landfall near Tampico, Mexico. It dissipated soon after. While Fred and Grace were storms, Tropical Storm Henri formed near Bermuda. After Fred dissipated, Henri became a hurricane. Right before landfall in Rhode Island and Long Island, Henri weakened to tropical storm status. Following landfall, Henri dissipated over Massachusetts. A tropical depression formed near Cuba on August 26. Not long after, it became a tropical storm and was named Ida. Ida intensified into a Category 1 hurricane and made landfall at Cuba. After re-entering the sea, Ida rapidly intensified into a Category 4 hurricane and made landfall in Louisiana. It dissipated on September 1. Its remnants produced heavy rain in the Northeastern United States. In the Atlantic, Tropical Storm Kate and Julian formed; however, they were short-lived. On the last day of August, a topical depression formed west of Africa. The system eventually became a tropical storm and was named Larry. Larry travelled across the Atlantic with its peak intensity as a Category 3 hurricane. Later, it passed near Bermuda and eventually made landfall in Newfoundland, becoming the first hurricane to strike the island since Igor in 2010. During September, Tropical Storm Mindy formed in the Gulf of Mexico and eventually striking Florida causing minor damage. Moreover, another tropical storm named Nicholas formed in the Gulf. Soon, it became a minimal Category 1 and made landfall over Texas. Its remnants stalled over Louisiana, which tampered the recovery process from the effects of Hurricane Ida a few weeks prior. In the Atlantic, Tropical Storm Odette formed off the East Coast of the United States and eventually became post-tropical. Later, Tropical Storms Peter and Rose formed on September 19. The storms were weak and eventually both of the systems became post-tropical together on September 23. Soon, a tropical depression formed off the coast of Africa and soon intensified into a tropical storm which was named Sam. The storm eventually became a hurricane a few hours later. Sam was a long lived and slow moving Category 4 hurricane. Despite its long duration, Sam stayed out to sea. When Sam was a hurricane, a system formed near Bermuda which became Subtropical Storm Teresa. However, it only lasted a day. On September 29, Tropical Storm Victor formed at the unusually low latitude of 8.3N. However, Victor was short-lived due to it being hampered by strong wind shear. After Victor dissipated, the basin became quiet once again.

Eastern & Central Pacific Oceans

2021 Pacific hurricane season summary map

On May 9, a tropical depression formed in the Eastern Pacific, with the NHC giving it the designation One-E. A few hours later, it strengthened into a tropical storm, being given the name Andres; Andres was the earliest named storm in the Eastern Pacific that formed east of 140°W, having formed 12 hours earlier before the previous record holder. The storm remained weak and dissipated on 11 May as it encountered high wind shear. Its outer bands caused moderate rainfall over the country of Mexico. In late May, another tropical depression formed and was later named Blanca as it strengthened into a tropical storm. However it dissipated on June 4 due to hostile conditions. On June 2 a low-pressure area was expected to develop into a tropical depression, however unfavorable conditions hindered its progress and the NHC stopped monitoring the system. On June 10, the low-pressure area began to once again organize over favorable conditions, and on June 12, the NHC designated it as Three-E. Six hours later it intensified into a tropical storm and was named Carlos. On June 14, Carlos weakened to a tropical depression as it became increasingly devoid of any convection. On June 15, a broad low-pressure system formed several miles offshore of southwestern Mexico. The low gradually organized, and on June 18, it was upgraded to a tropical depression, being given the designation Four-E. On the same day, it further intensified into a tropical storm and was given the name Dolores. Dolores made landfall on the southwestern coast of Mexico and rapidly weakened into a remnant low on June 20. Five days later, Tropical Storm Enrique formed on the same location and rapidly intensified into a hurricane by the next day becoming the season's first hurricane. Its outer bands brought heavy rainfall and landslides over the same places in Mexico where Tropical Storm Dolores affected earlier. On 30 June, the storm weakened to a low pressure area due to unfavourable conditions in the Gulf of California and made landfall over the Baja California peninsula and dissipated soon thereafter. On July 14, a tropical depression formed, not too long later, it was named Felicia. Felicia started to intensify. The storm became a hurricane the following day. Later that day, Felicia became a category 2 hurricane. The next day the storm became a category 3 major hurricane. The storm intensified until becoming a category 4 hurricane later that day. The storm stopped intensifying until Felicia intensified to 145MPH the next day. Tropical Depression Seven-E formed the same day and intensified into Tropical Storm Guillermo. A pair of tropical depressions formed on July 30, one of which intensified into Tropical Storm Hilda. The other tropical depression dissipated but a few days after that, reformed and later became Tropical Storm Jimena. On August 7, a tropical depression formed and later on in the day it intensified into Tropical Storm Kevin. Another depression formed a few days later and became Hurricane Linda. Linda intensified into a Category 4 Hurricane and dissipated on August 20. After a little bit, The remnants of Hurricane Grace from the Atlantic formed Tropical Storm Marty; Marty was short-lived. The day after Marty dissipated, a tropical depression formed. It intensified into a tropical storm and was named Nora. Nora peaked as a Category 1 hurricane and dissipated on August 30. On September 7, a tropical depression formed. It became a tropical storm and was named Olaf. Olaf reached Category 2 status, made landfall in Baja California Sur and dissipated on September 11. After Olaf, the rest of September remained quiet. On October 10, Tropical Storm Pamela formed at the sounthern coast of Zihuatanejo in Mexico. Pamela later became a minimal Category 1 hurricane and struck Sinaloa in Mexico.

Western Pacific Ocean

2021 Pacific typhoon season summary map

On January 19, a tropical depression formed, becoming the first Northern Hemisphere tropical cyclone of the year and of the 2021 Pacific typhoon season. It brought minor damage to the Philippines. On February 16, another system formed, with the PAGASA giving it the name Auring and the JTWC designating the system as 01W. On February 17, it was named Dujuan by the JMA. After passing over Palau, it brought minor damage to the Philippines before dissipating on February 22. On March 14, a tropical depression formed near the Sulu Sea, though it was short-lived and it quickly degenerated back into a low-pressure area. On April 12, a tropical depression formed south of Woleai, and on the next day, the JMA upgraded it to a tropical storm, giving it the name Surigae. On April 16, it was given the name Bising by the PAGASA as it entered the Philippine Area of Responsibility. Surigae underwent rapid intensification, becoming the strongest tropical cyclone to form before May in the Northern Hemisphere. After bringing severe damages to the Philippines, it transitioned into an extratropical cyclone on April 24 and dissipated on April 30. On May 12, the JTWC began tracking a tropical depression, giving it the designation 03W with the PAGASA assigning it the local name Crising. It made landfall on the Philippines as a weak tropical storm, however damage was minimal due to the storm's small size. Two tropical depressions formed near Palau on May 29 and May 30 respectively, with the former being assigned the name Choi-wan by the JMA. Choi-wan moved through the Philippines before merging with the Meiyu front on June 4. After a week gap on June 11, another tropical depression formed over the South China Sea and it intensified further to a tropical storm named as Koguma. However, it remained short-lived and made landfall over the nation of Vietnam by the next day and soon dissipated thereafter. After 10 days on June 21, Tropical Storm Champi formed. As a tropical depression, it affected the Mariana Islands and Guam before intensifying into a weak typhoon. It became extratropical on 27 June. A tropical depression with its Filipino name, Emong, formed a couple hundred miles from Mainland China. The storm remained a tropical depression and later dissipated. Another tropical depression formed near Vietnam a couple days later, the storm later made landfall in the country as a weak tropical depression. A tropical depression formed later in the month having the Filipino name Fabian, later intensifying to a tropical storm with the JMA giving it the name In-fa. In-fa later intensified to a typhoon, made several landfalls in China and dissipated on July 31. Meanwhile, Cempaka formed in the South China Sea and made landfall on Southern China and Vietnam causing moderate damage. Later, Tropical Storm Nepartak striked Miyagi Prefecture in Japan. The system had disturbed the ongoing Summer Olympics held in Japan. Nepartak was also the first tropical storm to hit Miyagi since records began in 1951. By the end of July, activities exploded as 8 systems formed within a week however, 5 of them were rather weak and dissipated without becoming tropical storms. The remaining 3 were named Lupit, Nida, and Mirinae. Lupit effected most of East Asia while Nida and Mirinae approached Japan but stayed away from land. Later, a tropical wave from the Central Pacific traveled a long distance and became a tropical storm over the Philippine Sea which was named Omais (Isang). Omais caused minor damage to The Ryukyu Islands and South Korea. After Omais, the rest of August remained quiet when Conson formed off the coast of the Philippines and became a typhoon in less than 24 hours. Conson striked the Philippines and Vietnam causing severe damage. Then, Chanthu formed and became the second super typhoon of the season. Chanthu then headed over to the East China Sea where the system weakened and stalled. It later made landfall over Kyushu,Japan and dissipated south of the country. On September 21, two new systems formed and was named Dianmu and Mindulle. Dianmu headed over to Vietnam where it made landfall. Meanwhile following Chanthu, Mindulle rapidly intensified into the season's third super typhoon. Mindulle weakened and strengthened multiple times due to cool dry air and cool sea-surface temperatures. Mindulle eventually passed through Japan's Izu Islands causing minor damage. On the start of October, Tropical storm Lionrock| formed east of the Philippines and made landfall on the Chinese Island of Hainan. Soon, two tropical depressions named Maring and Nando formed. However, the two storms eventually merged into Tropical Storm Kompasu due to the storms being close to each other. Kompasu then intensified near typhoon strength and effected the same area where Lionrock struck. The storm caused severe damage. Later, another tropical depression formed near Wake Island which was eventually named Namtheun. Namtheun however, stayed away from any landmass and became a extratropical cyclone.

North Indian Ocean

2021 North Indian Ocean cyclone season map

On April 2, a tropical depression formed in the north Andaman Sea near the Myanmar coast. It remained short-lived, however, dissipating the next day. It was the fourth system to form within the first fifteen days of April since the satellite era began in 1960. Formation during this time is considered rare since the first storm of a season usually forms in mid-April or May. A month later, on May 14, another tropical depression formed in the Arabian Sea. Later that day, it intensified into a cyclonic storm, being assigned the name Tauktae by the IMD. It intensified to an extremely severe cyclonic storm and made landfall on Gujarat. Ten days later another tropical depression formed in the Bay of Bengal in May 23, before strengthening into a cyclonic storm and receiving the name Yaas. It rapidly intensified further to a very severe cyclonic storm and made landfall in Odisha. Both of these storms caused considerable loss of lives and damage. On September 12, after a long period of inactivity, BOB 03 formed. BOB 03 intensified to a deep depression, before making landfall in India. It dissipated on September 15. On September 24, a tropical depression formed in the Bay of Bengal. It was designated BOB 04 by the IMD. In the next two days, it intensified into a cyclonic storm and was named Gulab. It made landfall in India. Later, the remnants of Gulab later reintensified into Shaheen in the Arabian Sea. Shaheen entered the Gulf of Oman, where it became a Severe Cyclonic Storm. However, it struggled to intensify any further, due to lack of convection. Shaheen eventually made landfall near Al Suwaiq in the governorate of Al Batinah North in Oman. Shaheen became the first cyclone to hit the country since Cyclone Hikaa in 2019. It was also the first cyclone to enter the Gulf of Oman since Cyclone Gonu in 2007.

South-West Indian Ocean

January - June

2020–21 South-West Indian Ocean cyclone season

From the 2020 season, two systems crossed into the 2021 season after having formed during the previous year. The systems were Danilo, which peaked as a high-end severe tropical storm and briefly passed near the Mascarene Islands, and a tropical depression designated as 05 which entered the South-West Indian Ocean basin on December 28, causing a Fujiwhara effect with Danilo before dissipating on January 3. In the 2021 season, a tropical disturbance formed in the South-West Indian Ocean, which intensified into a tropical storm, being given the name Eloise. After making landfall on Madagascar, it rapidly intensified into a tropical cyclone in the Mozambique Channel before making a second landfall on Beira. Its remnants affected Zimbabwe, Eswatini, and South Africa. Joshua entered the basin from the Australian Region on the same day. On January 27, 10U from the Australian region entered the basin and was designated as Tropical Depression 09 before quickly dissipating thereafter.

On February 4, a tropical depression formed and intensified into a tropical cyclone named Faraji which further intensified into the season's first intense and very intense tropical cyclone. On February 10, a subtropical depression intensified into a tropical cyclone, being named Guambe and peaking as a Category 2 equivalent tropical cyclone. On March 1, Marian briefly entered the basin before exiting the basin the next day. On March 2, two tropical disturbances formed, and both intensified, being given the names Habana and Iman respectively. While Iman peaked as a moderate tropical storm and then dissipated, Habana continued to intensify and became the season's second intense tropical cyclone. After a short period of inactivity, a tropical depression designated as 15 formed on March 25, though it remained weak and dissipated by March 28.

On April 10, a low-pressure area formed, but due to unfavorable conditions, development was limited. By April 19, the low-pressure area intensified into a tropical depression. The tropical depression intensified shortly into a moderate tropical storm earning the name Jobo. It then rapidly intensified into a tropical cyclone before weakening due to an increase in wind shear, dissipating on April 24. Its remnant made landfall on Tanzania, causing little damages in the area.

July - December

Australian region

2020–21 Australian region cyclone season summary map

January - June

At the beginning of the 2021 season, a new tropical low formed in the Australian region near the Northern Territory of Australia, which further intensified into the first named cyclone of 2021, being given the name Imogen before making landfall on Far North Queensland. Another tropical low formed northeast of the Cocos Islands which lasted for five days and dissipated on January 10. Joshua formed on January 13 and crossed into the South-West Indian Ocean basin four days later. A new tropical low formed on January 16 near Queensland, which intensified into a cyclone named Kimi on the next day. Four additional tropical lows formed after Kimi, of which one managed to intensify into Tropical Cyclone Lucas before crossing into the South Pacific basin on February 3, while the other three had minor effects on land.

In the month of February, four tropical disturbances formed out of which two were named, being given the names Marian and Niran respectively. Marian formed on February 23 and rapidly intensified into a Category 3 severe tropical cyclone on the Australian scale. It briefly entered the MFR's area of responsibility between March 1 and March 2 before re-entering into the basin on March 3, where it peaked as a Category 4 severe tropical cyclone on the Australian Scale. Niran formed on February 27 and also rapidly intensified, peaking as a Category 5 severe tropical cyclone. Although it remained offshore, its slow-motion caused damage to banana crops in Queensland. Niran exited the basin on March 5. In March, three tropical lows developed, though they did not intensify into tropical cyclones.

In the month of April, four systems have formed, with two being named Seroja by TCWC Jakarta and Odette by BoM. The two systems engaged in a Fujiwhara interaction, with Seroja eventually absorbing Odette. The former would go on to intensify and strike Australia as a Category 3 severe tropical cyclone. On April 9, a tropical low formed off the east coast of Australia and quickly exited on the same day. On April 23, a late-season tropical low formed to the east of the Arafura Sea. On May 31 a very rare tropical low formed near the Cocos Islands and dissipated without any significant intensification on 4 June.

July - December

South Pacific Ocean

2020–21 South Pacific cyclone season summary map

January - June

In January 2021, four tropical disturbances formed in the South Pacific, all four of which intensified into tropical depressions, with Ana and Bina intensifying into tropical cyclones. On February 1, Lucas entered from the Australian region and affected New Caledonia and Vanuatu. A tropical depression designated as 09F formed on February 7, before it was upgraded into a tropical storm by the JTWC. However, it accelerated southwards and became extratropical on February 11. Another tropical depression designated as 10F formed on February 22, before dissipating on February 24. Niran entered the basin on March 5 and caused extensive damage in New Caledonia before accelerating southeast as it transitioned into an extratropical cyclone. On March 5, a short-lived tropical depression designated as 11F existed from March 5 to March 6. On April 9, a tropical depression designated as 13F entered the basin, however, it dissipated on April 11 without intensifying into a tropical cyclone.

July - December

South Atlantic Ocean

On February 6, a weak system unofficially designated as 01Q was briefly tracked by the NOAA. The system formed and dissipated on the same day without being monitored by the Brazilian Navy. Another system formed on February 14 near Rio Grande do Sul, being designated as a subtropical depression by the Brazilian Navy. On April 19, a subtropical depression formed, although its precursor formed off the coast of Rio de Janeiro. On April 20 the subtropical depression gained strength and was classified as a subtropical storm by the Brazilian Navy, being assigned the name Potira. It brought gale-force winds to Copacabana. On June 28, an extratropical cyclone in Uruguay transitioned into a subtropical depression on the evening of the same day, being given the designation Invest 1N by the NOAA. A day later, the storm strengthened into a subtropical storm. On June 29, as the subtropical storm entered Brazilian maritime territory, the Brazilian Navy named it Raoni.[8]

Systems

January

Cyclone Eloise

January was unusually above-average, with fourteen tropical cyclones forming and seven being named. Before that, two systems crossed into the 2021 season after having formed during the previous year. Danilo was one of the systems that crossed over, peaking as a severe tropical storm and briefly passing near the Mascarene Islands. A tropical depression designated as 05 entered the South-West Indian Ocean basin on December 28 and caused a brief interaction with Danilo before dissipating on January 3. In the Australian region, Cyclone Imogen formed on January 1 and affected Far North Queensland, bringing minimal damage to the area. Following Imogen, Cyclone Joshua, Cyclone Kimi, and Cyclone Lucas developed, with Joshua later entering the South-West Indian Ocean on January 17. Kimi threatened to strike the coast of Queensland, but weakened suddenly due to unexpected wind shear, remaining just offshore instead. Lucas formed on January 25 and entered the South Pacific basin on February 1. Additionally, four tropical lows formed in the basin, out of which one system entered the South-West Indian Ocean basin. In the South-West Indian Ocean, Cyclone Eloise formed and first made landfall on Madagascar as a severe tropical storm. It rapidly intensified over the Mozambique Channel and became the strongest storm of the month shortly before making a damaging landfall on Mozambique, with its remnants entering Zimbabwe, Eswatini, and South Africa. In the South Pacific, two tropical depressions formed, which were later assigned the names Ana and Bina, both of them affected Fiji and Vanuatu. In the West Pacific, a tropical depression formed, which became the first Northern Hemisphere tropical cyclone of 2021 and also marked the beginning of the 2021 Pacific typhoon season.

Tropical cyclones formed in January 2021
Storm name Dates active Max wind
km/h (mph)
Pressure
(hPa)
Areas affected Damage
(USD)
Deaths Refs
Imogen January 1 – 6 85 (50) 989 Far North Queensland, Northern Territory $10 million None [9]
06U January 5 – 10 65 (40) 1002 None None None
Joshua January 13 – 19 85 (50) 991 Cocos Islands None None
Eloise January 14 – 25 150 (90) 967 Madagascar, Mozambique, Malawi, Zimbabwe, South Africa, Eswatini $10 million 27 [10]
08U January 15 – 23 65 (40) 998 Northern Territory, Western Australia None None
Kimi January 16 – 19 100 (65) 987 Queensland None None
09 January 19 – 28 75 (45) 995 Cocos Islands None None
TD January 19 – 20 Not specified 1008 Philippines $13.2 million 3 [11]
04F January 22 – 28 Not specified 999 Vanuatu None None
Lucas January 25 – February 3 110 (70) 975 Far North Queensland, Northern Territory, New Caledonia, Vanuatu Unknown 2
Ana January 26 – February 8 120 (75) 970 Fiji $1 million 1 [12]
06F January 27 – 28 Not specified 998 Fiji None None
12U January 28 – February 5 55 (35) 992 Northern Territory, Western Australia None None
Bina January 29 – 31 65 (40) 995 Vanuatu None None

February

February was slightly above-average, featuring eleven systems, of which five were named. One system was unofficial and another was subtropical. In the Australian region, two tropical lows formed on February 6 and 18 respectively. Cyclone Marian formed on February 23 and rapidly intensified, reaching Category 3-equivalent strength on February 28 with Niran following on February 27 and reaching Category 5 strength on both the Australian scale and the Saffir–Simpson scale, bringing impacts to Queensland and New Caledonia. In the South Pacific, a tropical depression formed north of Fiji and strengthened, though it accelerated southwards and became extratropical on February 11. Another tropical disturbance also briefly existed from February 22 to 24. In the South-West Indian Ocean, Cyclone Faraji formed and rapidly intensified, being classified as a very intense tropical cyclone before becoming the strongest storm of the month as it strengthened into the first Category 5-equivalent tropical cyclone in the basin since Cyclone Fantala in 2016. It also became the first very intense tropical cyclone recorded in the month of February. It then began to gradually weaken, dissipating on February 13. Another system formed on February 10 and made landfall on Mozambique before re-emerging back over water, and was given the name Guambe before reaching tropical cyclone status. In the Western Pacific, Tropical Storm Dujuan formed and became the basin's first named storm, bringing minor damage to the Philippines. In the South Atlantic, one system was unofficially monitored by NOAA, being given the unofficial designation of 01Q. However, the Brazilian Navy did not monitor the system. Another system formed near Rio Grande do Sul and was designated as a subtropical depression by the Brazilian Navy.

Tropical cyclones formed in February 2021
Storm name Dates active Max wind
km/h (mph)
Pressure
(hPa)
Areas affected Damage
(USD)
Deaths Refs
Faraji February 4 – 13 230 (145) 925 None None None
01Q February 6 65 (40) 990 None None None [13][14][15]
13U February 6 – 7 Not specified 996 Northern Territory None None
09F February 7 – 11 55 (35) 991 Fiji, Tonga, Wallis and Futuna None None
Guambe February 10 – 21 155 (100) 953 Mozambique None None
SD February 14 – 17 55 (35) 1002 Rio Grande do Sul None None
Dujuan (Auring) February 16 – 23 75 (45) 996 Palau, Philippines $3.29 million 1 [16]
TL February 18 – 23 Not specified 1002 Northern Territory None None
Marian February 21 – March 9 155 (100) 955 Christmas Island, Cocos Islands None None
10F February 22 – 24 Not specified 1003 Niue, Samoan Islands, Tonga, Wallis and Futuna None None
Niran February 27 – March 6 205 (125) 931 Far North Queensland, New Caledonia, Northern Territory >$200 million None [17]

March

Cyclone Habana

March was slightly below-average, featuring nine tropical cyclones with only two being named. In the Australian region, five tropical lows formed on March 10, 18, 21, and 29 respectively. In the South Pacific, a tropical depression formed and was designated as 11F, though it was short-lived, dissipating the next day. In the South-West Indian Ocean, Cyclone Habana formed and explosively intensified to an intense tropical cyclone, persisting for two weeks and reaching three individual peak intensities. Forming along with Habana was Tropical Storm Iman, which made landfall on Madagascar as a tropical depression and bringing heavy rainfall to Réunion, dissipating a few days later. In the West Pacific, a tropical depression formed on March 14, however it was short-lived, dissipating the same day.

Tropical cyclones formed in March 2021
Storm name Dates active Max wind
km/h (mph)
Pressure
(hPa)
Areas affected Damage
(USD)
Deaths Refs
Habana March 2 – 16 205 (125) 938 None None None
Iman March 2 – 8 65 (40) 996 Madagascar, Mauritius, Réunion Unknown None
11F March 5 – 6 Not specified 1001 None None None
18U March 10 – 15 Not specified Not specified None None None
TD March 14 Not specified 1006 Philippines None None
19U March 18 – 21 Not specified Not specified Western Australia None None
20U March 18 – 20 Not specified Not specified Northern Territory None None
21U March 21 – 26 Not specified Not specified None None None
15 March 25 – 28 55 (35) 998 None None None

April

Typhoon Surigae

April was above-average, featuring nine systems, of which five were named. In the Australian region, Cyclone Seroja formed near East Timor and Indonesia. Its precursor caused catastrophic damage and deadly landslides in the West Nusa Tenggara and East Nusa Tenggara provinces of Indonesia and East Timor, causing 229 fatalities before strengthening to a Category 3 severe tropical cyclone and making a rare landfall on Midwestern Australia, becoming the first since Elaine in 1999. Cyclone Odette also formed in the region near the Cocos Islands before undergoing a Fujiwhara interaction with Seroja quickly after its formation and later being absorbed by it. Additionally, two tropical lows formed on April 7 and April 9, of which one entered the South Pacific basin. In the North Indian Ocean, a short-lived tropical depression formed off the Myanmar coast in the north Andaman Sea, however it dissipated the next day. In the Australian region, a tropical low formed before later moving into the South Pacific basin, being designated as 13F; it was short-lived and dissipated on April 11. In the South-West Indian Ocean, Cyclone Jobo developed near the Seychelles, undergoing a brief period of rapid intensification before dissipating near Tanzania on April 24. In the West Pacific, Typhoon Surigae formed south of Woleai and rapidly intensified into a Category 5-equivalent typhoon, becoming the strongest typhoon recorded in the month of April as it passed near the Philippines. In the South Atlantic, Subtropical Storm Potira formed just off the coast of Rio de Janeiro, causing gale-force winds in Copacabana.

Tropical cyclones formed in April 2021
Storm name Dates active Max wind
km/h (mph)
Pressure
(hPa)
Areas affected Damage
(USD)
Deaths Refs
BOB 01 April 2 – 3 45 (30) 1000 Andaman and Nicobar Islands, Myanmar None None
Seroja April 3 – 12 120 (75) 971 East Nusa Tenggara, East Timor, Western Australia, West Nusa Tenggara > $490.7 million 229 [18][19][20][21][22]
Odette April 3 – 10 85 (50) 988 Christmas Island None None
24U April 7 – 11 Not specified Not specified None None None
13F April 9 – 11 Not specified 1001 None None None
Surigae (Bising) April 12 – 24 220 (140) 895 Okinawa Prefecture, Palau, Philippines, Russia, Sulawesi, Taiwan, Yap State > $10.45 million 10 [23]
Jobo April 18 – 24 120 (75) 985 Madagascar, Seychelles, Tanzania Unknown 22
Potira April 19 – 25 75 (45) 1006 Rio de Janeiro None None
TL April 23 – 24 Not specified 1009 None None None

May

Cyclone Tauktae

May was well above average, even though tropical cyclogenesis started in mid-May. It featured the formation of nine systems, with six being named. In the Australian region near the Cocos Islands, an off-season tropical low formed before dissipating on June 3. In the East Pacific, Tropical Storm Andres formed and peaked as a tropical storm, becoming the earliest named storm in the basin in the East Pacific east of 140°W, breaking the previous record of Adrian in 2017 by twelve hours. Tropical Storm Blanca also formed and peaked as a tropical storm near the end of the month. In the North Atlantic, Tropical Storm Ana formed northeast of Bermuda as a subtropical storm before later transitioning into a tropical storm, marking the seventh consecutive Atlantic hurricane season to feature a storm formed before the official start date. In the North Indian Ocean, Cyclone Tauktae formed off the coast of Kerala and Lakshadweep and rapidly intensified to Category 4 equivalent storm, becoming the strongest storm of the month. It made a devastating landfall in Gujarat. Ten days later, Cyclone Yaas formed in the Bay of Bengal and intensified into a Category 1 equivalent strength, eventually making landfall in northwestern Odisha on May 26. Both storms brought considerable damage and loss of lives. In the West Pacific, a tropical depression formed on May 12 before making landfall on the Philippines and dissipating shortly thereafter. Tropical Storm Choi-wan and a tropical depression also formed later in the month, with Choi-wan peaking as a tropical storm. Choi-wan made several landfalls in the Philippines, causing severe damage. It later weakened into a tropical depression before transitioning into an extratropical cyclone.

Tropical cyclones formed in May 2021
Storm name Dates active Max wind
km/h (mph)
Pressure
(hPa)
Areas affected Damage
(USD)
Deaths Refs
Andres May 9 – 11 65 (40) 1005 State of Mexico None None
03W (Crising) May 12 – 14 55 (35) 1004 Philippines $486,000 None [24]
Tauktae May 14 – 19 185 (115) 950 Dadra and Nagar Haveli and Daman and Diu, Gujarat, Goa, Maharashtra, Karnataka, Kerala, Lakshadweep, Maldives, Delhi, Rajasthan, Haryana, Sindh, Sri Lanka $2.1 billion 174 [25]
Ana May 22 – 24 75 (45) 1006 Bermuda None None
Yaas May 23 – 28 140 (85) 970 Andaman and Nicobar Islands, Bangladesh, Bihar, Jharkhand, Nepal, Odisha, Uttar Pradesh, West Bengal $2.84 billion 20
Choi-wan (Dante) May 29 – June 5 75 (45) 998 Palau, Philippines, Taiwan $6.01 million 11 [26][27]
TD May 30 – June 1 Not Specified 1006 None None None
Blanca May 30 – June 4 95 (60) 998 None None None
TL May 31 – June 3 Not specified Not specified None None None

June

Hurricane Enrique

June was a slightly above average-month, featuring the formation of ten tropical cyclones with nine being named. In the East Pacific, Tropical Storm Carlos, Tropical Storm Dolores and Hurricane Enrique formed, with Dolores making landfall near the border between Michoacán and Colima in Mexico near hurricane strength, killing 3 people, while Enrique intensified to a hurricane in a similar location to Dolores later in the month, becoming the strongest storm of the month. In the North Atlantic, Tropical Storm Bill formed off the coast of North Carolina, Tropical Storm Claudette formed over southeastern Louisiana and brought heavy rain and severe weather to the Southeastern United States, while Tropical Storm Danny formed off the coast of South Carolina late in the month, tying the Atlantic for the most active June. In the West Pacific, Tropical Storm Koguma formed near Hong Kong and crossed Hainan before making landfall in Vietnam. Champi formed later in the month, passing close to Guam and the Northern Mariana Islands before recurving out to sea and then intensifying into a typhoon. In the South Atlantic, Subtropical Storm Raoni formed off the coast of Uruguay, causing some impacts in Montevideo and Punta del Este.

Tropical cyclones formed in June 2021
Storm name Dates active Max wind
km/h (mph)
Pressure
(hPa)
Areas affected Damage
(USD)
Deaths Refs
Koguma June 11 – 13 65 (40) 996 Hainan, Hong Kong, Vietnam $9.87 million 1 [28]
Carlos June 12 – 16 85 (50) 1000 None None None
Bill June 14 – 16 95 (60) 998 North Carolina, Nova Scotia None None
Dolores June 18 – 20 110 (70) 990 Colima, Jalisco, Guerrero, Michoacán, Nayarit, Oaxaca, Sinaloa $50 million 3
Claudette June 19 – 22 75 (45) 1004 Alabama, Florida, Georgia, Louisiana, Mississippi, North Carolina, Oaxaca, Veracruz $350 million 14
Champi June 21 – 27 120 (75) 980 Guam, Northern Mariana Islands None None
Enrique June 25 – 30 150 (90) 975 Southwestern Mexico, Baja California Peninsula $50 million 2
Danny June 28 – 29 75 (45) 1009 Bermuda, Georgia, South Carolina Minimal None
Raoni June 29 – July 2 95 (60) 986 Brazil, Uruguay None None
TD June 30 Not specified 1010 None None None

July

Hurricane Felicia

July was average, featuring fourteen tropical cyclones, with seven being named. In the East Pacific, Hurricane Felicia and Tropical Storm Guillermo formed in the middle half of the month, with Felicia becoming the first major hurricane of its respective Pacific hurricane season. Hurricane Hilda would then form at the end of the month. In the North Atlantic, Hurricane Elsa formed, becoming the earliest fifth-named storm on record and beating the record of Tropical Storm Edouard of the previous year, bringing substantial damage to the Caribbean and eastern North America. In the West Pacific, two tropical depressions formed and were designated as 07W and 08W respectively. The former received the name Emong from PAGASA. Further into the month, Typhoon In-fa, Tropical Storm Cempaka and Tropical Storm Nepartak formed, with In-fa and Cempaka making landfall in China as severe tropical storms; both were associated with the 2021 Henan floods.

Tropical cyclones formed in July 2021
Storm name Dates active Max wind
km/h (mph)
Pressure
(hPa)
Areas affected Damage
(USD)
Deaths Refs
Elsa July 1 – 9 140 (85) 991 Barbados, Trinidad and Tobago, Leeward Islands, Windward Islands, Venezuela, Hispaniola, Cuba, Jamaica, Cayman Islands, South Atlantic United States, Northeastern United States, Atlantic Canada $1.2 billion 5
07W (Emong) July 3 – 6 55 (35) 1004 Palau, Philippines None None
08W July 5 – 8 55 (35) 1000 Hainan, Hong Kong, Vietnam None None
Felicia July 14 – 21 230 (145) 947 None None None
In-fa (Fabian) July 16 – 29 150 (90) 950 Philippines, Ryukyu Islands, Taiwan, China >$2 billion 6
Cempaka July 17 – 26 100 (65) 990 South China, Vietnam >$4.25 million 3 [29][30][31]
Guillermo July 17 – 20 95 (60) 999 None None None
TD July 19 – 20 Not specified 1012 None None None
Nepartak July 23 – 28 75 (45) 990 Japan None None
TD July 28 – 29 Not specified 1004 None None None
TD July 30 – August 1 Not specified 998 Japan None None
Hilda July 30 – August 6 140 (85) 985 None None None
Jimena July 30 – August 7 65 (40) 1005 None None None
TD July 31 – August 3 55 (35) 998 None None None

August

Hurricane Ida

August was average, featuring eighteen tropical cyclones, with sixteen of them being named. In the East Pacific, Tropical Storm Ignacio formed, but dissipated a few days later due to strong wind shear partially due to its proximity to Hurricane Hilda. Tropical Storm Kevin would then form a couple of days later, off the coast of Mexico with Hurricane Linda following shortly after, peaking as a low-end Category 4-equivalent hurricane. Linda was to be followed by Tropical Storm Marty and Hurricane Nora. In the West Pacific, tropical storms Lupit, Mirinae, Nida and Omais formed, with Lupit making landfall in China and Japan. In the North Atlantic, Tropical Storm Fred formed south of Puerto Rico and made landfall in the Florida Panhandle, with Hurricanes Grace and Henri forming later. Grace impacted the Caribbean before making landfall on the Yucatán Peninsula before rapidly intensifying in the Bay of Campeche and making landfall as a category 3 hurricane in mainland Mexico. Henri would impact the Northeastern United States as a tropical storm, becoming the first tropical cyclone to make landfall in Rhode Island since Hurricane Bob in 1991. At the end of the month, Hurricanes Ida and Larry, as well as tropical storms Julian and Kate, and formed. Ida, which became the strongest storm of the month, brought impacts to Cuba before striking Louisiana on August 29, notably on the 16th anniversary of Hurricane Katrina, tying with Hurricane Laura of the previous year and the 1856 Last Island Hurricane as the strongest hurricane to make landfall in the state by maximum winds.

Tropical cyclones formed in August 2021
Storm name Dates active Max wind
km/h (mph)
Pressure
(hPa)
Areas affected Damage
(USD)
Deaths Refs
Ignacio August 1 – 4 65 (40) 1004 Clarion Island None None
TD August 1 – 3 Not specified 996 Ryukyu Islands, Taiwan None None
12W August 2 – 6 55 (35) 1000 Japan None None
Lupit (Huaning) August 2 – 9 85 (50) 985 Vietnam, South China, Taiwan, Ryukyu Islands, Japan $64.8 million 6 [32]
Nida August 3 – 8 95 (60) 992 None None None
Mirinae (Gorio) August 3 – 10 85 (50) 980 Ryukyu Islands, Japan None None
Kevin August 7 – 12 95 (60) 999 Revillagigedo Islands None None
Linda August 10 – 20 215 (130) 950 Revillagigedo Islands, Hawaii Minimal None
Omais (Isang) August 10 – 24 95 (60) 994 Marshall Islands, Micronesia, Mariana Islands, Ryukyu Islands, South Korea None None
Fred August 11 – 18 100 (65) 993 Lesser Antilles, Puerto Rico, Hispaniola, Cuba, The Bahamas, Southeastern United States, Eastern Great Lakes Region, Northeastern United States, Southern Quebec, The Maritimes $1.3 billion 7
Grace August 13 – 21 205 (125) 962 Lesser Antilles, Puerto Rico, Dominican Republic, Haiti, Cuba, Jamaica, Cayman Islands, Yucatán Peninsula, Mexico $513 million 13
Henri August 16 – 23 120 (75) 986 Bermuda, Northeastern United States, Southern Nova Scotia $550 million 2
Marty August 23 – 24 75 (45) 1000 None None None
Nora August 25 – 30 140 (85) 977 Mexico $125 million 3
Ida August 26 – September 1 240 (150) 929 Leeward Islands, Venezuela, Colombia, Panama, Jamaica, Cayman Islands, Cuba, Southeastern United States, Northeastern United States, New England, Nova Scotia $65 billion 115
Kate August 28 – September 1 75 (45) 1003 None None None
Julian August 29 – 30 95 (60) 995 None None None
Larry August 31 – September 11 205 (125) 955 Bermuda, Newfoundland and Labrador $80 million 2

September

Typhoon Chanthu

September was average, featuring nineteen storms, with fourteen of them being named. In the East Pacific, Hurricane Olaf being the only system in the basin, formed on the east coast of Mexico and later made landfall on the Baja California Peninsula as a Category 2 hurricane. In the West Pacific, Tropical Storms Conson and Dianmu, Typhoons Chanthu and Mindulle as well as three short-lived depressions formed, with Chanthu becoming the strongest storm of the month. Conson made a series of landfalls in the Philippines while Chanthu effected most of East Asia due to it stalling in the East China Sea. Mindulle on the other hand caused minor damage on Japan's Izu Islands. In the Atlantic, (Sub)Tropical Storms Mindy, Odette, Peter, Rose, Teresa, Victor as well as Hurricanes Nicholas and Sam formed. Mindy made landfall on St. Vincent Island in Florida, while Nicholas made landfall near Sargent in Texas. Hurricane Sam was a slow moving Category 4 hurricane which became the strongest storm in the month in terms of sustained winds. In the North Indian Ocean, Cyclonic Storm Gulab, Shaheen (a regeneration of Gulab), and BOB 03 formed. Gulab made landfall in India, causing minor damage. Soon, the remnants of Gulab regenerated into Shaheen in the Arabian Sea west of India. Shaheen entered the Gulf of Oman and eventulally made landfall near Al Suwaiq in the governorate of Al Batinah North in Oman. Shaheen became the first cyclone to hit the country since Cyclone Hikaa in 2019 and was the first cyclone to hit the area since 1890. It was also the first cyclone to enter the Gulf of Oman since Cyclone Gonu in 2007.

Tropical cyclones formed in September 2021
Storm name Dates active Max wind
km/h (mph)
Pressure
(hPa)
Areas affected Damage
(USD)
Deaths Refs
17W September 1 – 4 55 (35) 1008 None None None
Conson (Jolina) September 5 – 13 100 (65) 985 Philippines, Vietnam, Hainan $36.1 million 22
Chanthu (Kiko) September 5 – 18 215 (130) 905 Philippines, Taiwan, Ryukyu Islands, South Korea, Japan >$748,000 None
TD September 7 – 8 Not specified 1004 Vietnam None None
Olaf September 7 – 11 155 (100) 974 Baja California Sur $10 million 1
Mindy September 8 – 10 75 (45) 1002 Gulf Coast of the United States Unknown None
BOB 03 September 12 – 15 55 (35) 990 Odisha Unknown None
Nicholas September 12 – 16 120 (75) 988 Mexico, Gulf Coast of the United States $1.1 billion None
Odette September 17 – 18 75 (45) 1002 East Coast of the United States, Atlantic Canada None None
Peter September 19 – 23 85 (50) 1004 Hispaniola, Leeward Islands, Puerto Rico None None
Rose September 19 – 23 85 (50) 1003 None None None
Mindulle September 22 – October 2 185 (115) 920 Mariana Islands, Japan None None
Dianmu September 22 – 24 65 (40) 1000 Vietnam, Laos, Cambodia None None
Sam September 22 – October 5 250 (155) 929 Bermuda None None
Gulab September 24 – 28 85 (50) 992 India $269 million 17
Teresa September 24 – 25 75 (45) 1008 Bermuda None None
TD September 27 – October 2 Not specified 1004 None None None
Victor September 29 – October 4 95 (60) 997 None None None
Shaheen September 30 – October 4 100 (75) 986 India, Pakistan, Iran, Oman, United Arab Emirates, Saudi Arabia $269 million 11

October

Hurricane Pamela

So far, October has featured five storms, with four of them being named. In the East Pacific, Pamela formed on the southern coast of Zihuatanejo, It then intensified into a hurricane despite struggling. The storm made landfall in Sinaloa and then rapidly weakened to a tropical depression. In the West Pacific, Tropical storms Lionrock, Kompasu, and Namtheun formed. It also included a tropical depression that was named Nando by the PAGASA. Lionrock struck Hong Kong, Southern China and Vietnam. Kompasu also effected the same area where Lionrock struck a week prior. The storm caused severe damage and loss of lives. Nando formed east of another depression which was developing. It then merged with the depression into the formation of Kompasu.

Tropical cyclones formed in October 2021
Storm name Dates active Max wind
km/h (mph)
Pressure
(hPa)
Areas affected Damage
(USD)
Deaths Refs
Lionrock (Lannie) October 5 – 10 65 (40) 992 Philippines, China, Vietnam $241,440 5
Kompasu (Maring) October 7 – 14 100 (65) 975 Philippines, China, Taiwan, Vietnam $63.7 million 41
Nando October 7 – 8 55 (35) 1002 None None None
Namtheun October 9 – 17 95 (60) 996 None None None
Pamela October 10 – 14 130 (80) 985 Socorro Island, Baja California Sur, Mexico Unknown None

Global effects

There are a total of nine tropical cyclone basins, seven are seasonal and two are non-seasonal, thus all eight basins except the Mediterranean are active. In this table, data from all these basins are added.[33]

Season name Areas affected Systems formed Named storms Damage (USD) Deaths Ref
2021 Atlantic hurricane season 5 Atlantic Canada, Cayman Islands, Colombia, Cuba, The Bahamas, Bermuda, East Coast of the United States, Eastern United States, Gulf Coast of the United States, Midwestern United States, Northeastern United States, Southeastern United States, Jamaica, Venezuela, Mexico, Oaxaca, Central America, Lesser Antilles, Hispaniola, Yucatán Peninsula, Puerto Rico, West Africa, Iceland, Greenland 20 20 >$69.513 billion 159
2021 Pacific hurricane season 5 Mexico, Baja California Peninsula, Colima, Michoacán, State of Mexico, Hawaii, Revillagigedo Islands 16 16 $210 million 9 [34]
2021 Pacific typhoon season 3 China, Hong Kong, Macau, Indochina, Japan, Korean Peninsula, Palau, Philippines, Russian Far East, Sulawesi, Taiwan, Caroline Islands, Marshall Islands, Mariana Islands, Guam, Yap State, Alaska, Aleutian Islands 36 19 $2.07 billion 76 [11][16][23]
2021 North Indian Ocean cyclone season 4 India, Andhra Pradesh, Andaman and Nicobar Islands, Dadra and Nagar Haveli and Daman and Diu, Goa, Gujarat, Karnataka, Kerala, Maharashtra, Odisha, Sindh, West Bengal, Uttar Pradesh, Bangladesh, Iran, Maldives, Myanmar, Nepal, Oman, Pakistan, Saudi Arabia, Sri Lanka, United Arab Emirates 6 4 $5.21 billion 223 [35][36]
2020–21 South-West Indian Ocean cyclone season 2 6 Eswatini, Madagascar, Malawi, Mozambique, Réunion, Seychelles, South Africa, Tanzania, Zimbabwe 7 6 $11 million 27 [10]
2020–21 Australian region cyclone season 2 Christmas Islands, Cocos Islands, East Nusa Tenggara, East Timor, Far North Queensland, Northern Territory, Queensland, Western Australia, West Nusa Tenggara 12 8 $518.7 million 272 [9][17][18][19][20][21][22]
2020–21 South Pacific cyclone season 2 Fiji, New Caledonia, Niue, Samoan Islands, Tonga, Vanuatu, Wallis and Futuna 7 2 $246.7 million 7 [12][37]
2021 South Atlantic tropical cyclone season Rio de Janeiro, Rio Grande do Sul 3 (1) 2 None None [13][14][15]
Worldwide (See above) 131 (1) 81 >$61.38 billion 753

See also

Notes

2 Only systems that formed either on or after January 1, 2021 are counted in the seasonal totals.
3 Only systems that formed either before or on December 31, 2021 are counted in the seasonal totals.
4 The wind speeds for this tropical cyclone/basin are based on the IMD Scale which uses 3-minute sustained winds.
5 The wind speeds for this tropical cyclone/basin are based on the Saffir Simpson Scale which uses 1-minute sustained winds.
6The wind speeds for this tropical cyclone are based on Météo-France which uses wind gusts.

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Regional Specialized Meteorological Centers

Tropical Cyclone Warning Centers