Harman Patil (Editor)

2001 Pacific typhoon season

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First system formed  February 17, 2001
Name  Faxai
Total storms  26
Last system dissipated  December 29, 2001
Total depressions  45
Typhoons  16
2001 Pacific typhoon season

The 2001 Pacific typhoon season has no official bounds; it ran year-round in 2001, but most tropical cyclones tend to form in the northwestern Pacific Ocean between May and November. These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.

Contents

The scope of this article is limited to the Pacific Ocean, north of the equator and west of the international date line. Storms that form east of the date line and north of the equator are called hurricanes; see 2001 Pacific hurricane season. Tropical Storms formed in the entire west pacific basin are assigned a name by the Tokyo Typhoon Center. Tropical depressions in this basin have the "W" suffix added to their number. Tropical depressions that enter or form in the Philippine area of responsibility are assigned a name by the Philippine Atmospheric, Geophysical and Astronomical Services Administration or PAGASA. This can often result in the same storm having two names.

Systems

In storm information below, wind-speed advisories differ from the Joint Typhoon Warning Center (JTWC) to the JMA as the JTWC uses the United States criteria of 1-minute mean to designate maximum sustained winds, while the JMA uses the 10-minute mean wind criterion to designate tropical cyclone maximum sustained gusts. This difference generally results in JTWC maximum winds appearing higher than the maximum winds described by the JMA for the same cyclone.

Tropical Depression 01W (Auring)

In the middle of February, a tropical depression moved across the Philippines.

Tropical Depression 02W (Barok)

From April 17 through April 21, a tropical depression persisted to the east of the Philippines.

Severe Tropical Storm Cimaron (Crising)

Tropical Storm Cimaron developed on May 9 and moved northward through the Philippines, dissipating on May 14.

Tropical Depression Darna

A tropical disturbance formed northeast of the Philippines on June 15. It was classified as a Tropical Depression, receiving the name Darna on June 17. Pressure dropped to 4 millibars, but it failed to reach minimal tropical storm strength. Darna moved north on June 18 and dissipated to a low on June 19. No casualties were reported and damages were unknown.

Typhoon Chebi (Emong)

Tropical Depression 04W formed on June 19 near Palau where it moved westward and strengthened into Tropical Storm Chebi six hours later. Chebi then moved generally west-northwest and then to the northwest as the tropical storm passed north of the Philippines on June 21 and entered the Luzon Strait on June 23 as a Category 1 typhoon. Later on the 23rd Chebi reached a peak intensity of 85 knots (160 km/h, 100 mph) as the center of the storm was 75 miles (121 km) south of Taiwan. A trough forced Chebi west and northwest where it made landfall near Fuzhou City, China. Chebi then weakened and accelerated to the north then northeast, passing southeast of Shanghai before exiting back out to sea. The JMA and other weather centers stopped issuing advisories when the remnants of Chebi dissipated in the eastern Pacific on June 30.

Chebi killed 82 people, mostly in China, and left $422 million (2001 USD), $457 million (2005 USD). Chebi's heavy rains and strong winds left nine people dead, 28 missing and $13 million (2001 USD) in damage in the Philippines. Four of the nine were from a Belizian freighter that sank during the storm. The Penghu Islands, which took the brunt of the typhoon, suffered considerable damage as 102 fishing boats sank and ten thousand people were left without power. The storm also crippled ground and air traffic. A rain laden typhoon, Chebi produced 100 millimeters of rain across Guangdong. About 73 people were killed in China, most of them in the southeastern province of Fujian. The storm also destroyed several thousand acres of crops, resulting in economic losses. In Ningde, about 321,400 houses were destroyed by the typhoon. About 22 people were killed in Hangzhou when a landslide burst through a construction wall.

Severe Tropical Storm Durian

78 casualties and $446 million (2001 USD) in damage can be attributed to Typhoon Durian hitting southern China on July 1 as an 85 mph (137 km/h) typhoon. The name Durian was submitted by Thailand and refers to a Southeast Asian fruit of the same name.

Severe Tropical Storm Utor (Feria)

Severe Tropical Storm Utor, which developed on June 30 east of the Philippines, brushed northern Luzon on the 4th as a 90 mph (140 km/h) typhoon. It continued west-northwestward to hit southeastern China on the 6th. Utor, while not a very strong storm, brought heavy rain amounting to $297.2 million (2001 USD) in damage, as well as causing 197 fatalities.

Tropical Storm Trami (Gorio)

Forming east of the Philippines, Trami moved northwestward through its life and dissipated on July 11 over southeastern China.

Tropical Depression 08W

Tropical Depression 08W was a short-lived system that remained far away from land in mid-July.

Tropical Depression

Another short-lived tropical depression persisted from July 16 through July 19.

Typhoon Kong-rey

Kong-rey developed south of Japan, initially moved to the west but recurved to the northeast, dissipating on July 28.

Severe Tropical Storm Yutu (Huaning)

Yutu made landfall to the west of Hong Kong and dissipated on July 26.

Typhoon Toraji (Isang)

On July 29, 115 mph (185 km/h) Typhoon Toraji hit eastern Taiwan and continued westward to make landfall on southeast China on the July 30.

Torrential rainfall produced by the storm triggered flash flooding and landslides across Taiwan, killing 200 people and leaving NT$7.7 billion ($245 million USD) in damage. At least 30 people were killed in a village located in Nantou County which was completely buried by mud and rocks. In the wake of the storm, Taiwan's Premier, Chang Chun-hsiung criticized the excessive development of Taiwan and lack of heedance of possible negative effects for the significant loss of life from Toraji. He also initiated a reforestation project to avoid future disasters of a similar scale.

Typhoon Man-yi

Man-yi became a strong typhoon, remaining away from land before dissipating on August 9 east of Japan.

Tropical Storm Usagi

45 mph (72 km/h) Tropical Storm Usagi, which formed in the South China Sea on August 8, hit northern Vietnam on the 10th.

Typhoon Pabuk

Throughout Japan, the storm resulted in six fatalities and injured another 32, nine of which were severe. Damage from Pabuk amounted to 619.166 million yen ($7.1 million USD).

Tropical Depression Jolina

Three circulations developed in a monsoon trough in the South China Sea in mid-August. The third formed into a tropical depression which remained stalled west of Luzon between August 16 and 19. It was last seen as an exposed surface circulation virtually where it formed on August 21.

Tropical Depression 15W

Short-lived tropical depression that did not affect land.

Typhoon Wutip

Moving northeastward for its entire duration, Wutip became a moderate typhoon before dissipating on September 2.

Tropical Storm Sepat

An area of thunderstorms formed late on the 19th about 100 miles (160 km) south of Pohnpei. By the 22nd it was south-southeast of Guam, still attempting to organize while it moved east-northeast. Moving disjointedly northward, by the 27th it developed into a tropical depression 250 miles (400 km) northwest of Wake Island, and by early the next day it had attained tropical storm strength. Continuing northward, it reached it maximum intensity of 45 kts/50 mph before losing organization on the 28th. Accelerating as it recurved well northwest of Midway Island, it became a nontropical low late on the 31st as it approached the International Dateline to the south of the Aleutians.

Tropical Storm Fitow

Initially an area of thunderstorms formed west of Luzon late on August 26, possibly due to the remains of former Tropical Depression Jolina. Late on August 28 it formed into a tropical depression about 300 miles (480 km) south-southwest of Hong Kong. It moved west-northwest over northeastern Hainan late on August 29, before becoming a tropical storm 24 hours later. Early on August 31, the tropical storm began to drift north towards China. That evening, it struck Dongxing before weakening back into a tropical depression on September 1 and dissipating the following day. Excessive rains fell in mainland China, with locations in Changjiang county measuring up to 831.1 mm in the 3 day period ending late on August 31. Total economic losses in Hainan were near 1.367 billion yuan ($201.7 million USD). In all, 3680 houses were nearly destroyed, four died, and 3.5 million people were impacted by the weak tropical storm.

Typhoon Danas

A tropical depression formed on September 3. It was then later designated as 19W by the JTWC and named as Danas by the JMA on September 4. It intensified into a Category 2 typhoon as it created a small eye on September 7. On September 8, Danas became a Category 3 typhoon as it moved northwest towards Japan by Typhoon Nari. It then dissipated on September 11.

On September 10, Danas spawned a tornado near the city of Ochiai, just outside Tokyo. Along its track, the tornado damaged roofs, downed trees and injured one person. Following an assessment of the damage, the Tokyo District Meteorological Observatory ranked it as an F1 on the Fujita scale. According to reliable records, this was the eleventh tornado to touch down in the Kanto region. Throughout Japan, Danas was responsible for eight fatalities and injured 48. Damage from the storm amounted to 1.1 billion yen ($12.8 million USD).

Typhoon Nari (Kiko)

On September 5, a tropical depression developed northeast of Taiwan. Weak currents, which were prevalent throughout its lifetime, caused it to drift to the northeast where it became a tropical storm on the 6th. Nari stalled near Okinawa, and became a typhoon on the 7th. Over the next 5 days, Nari executed a triple loop over open waters, reaching a peak of 115 mph (185 km/h) winds before weakening to a tropical storm on the 14th. It restrengthened to a typhoon, and as it continued southwestward, Nari reached 100 mph (160 km/h) winds before hitting northeastern Taiwan on the 16th. The storm drifted across the island, emerging into the South China Sea on the 18th as a tropical depression. It continued westward, and finally made landfall east of Hong Kong as a 65 mph (105 km/h) tropical storm on the 20th. Nari caused 92 casualties and up to 50 inches (1,300 mm) of rain led to torrential flooding.

Typhoon Vipa

The JMA classified a small tropical depression on September 16. It rapidly was upgraded to Tropical Depression 21W by the JTWC as it headed towards warm waters. Early on September 17, it became a tropical storm naming it Vipa. The cluster of thunderstorms increased to Vipa as it became a minimal typhoon on September 19. It impacted Japan later that day, bringing strong winds and minimal damage. Typhoon Vipa underwent an extratropical transition on September 21, and fully dissipated southeast of Kamchatka Peninsula on September 23.

The name Vipa was changed to the correct spelling Wipha in 2002.

Typhoon Francisco

Tropical Depression 22W formed in open waters on September 18. It rapidly intensified to a tropical storm, being named as Francisco on September 20. It became a typhoon on September 21 as it moved north. On September 22, it reached peak intensity as a strong typhoon. Typhoon Francisco became extratropical on September 25 and dissipated on September 26.

Typhoon Lekima (Labuyo)

A cluster of thunderstorms formed and rapidly became Tropical Depression Labuyo by the PAGASA and 23W by the JTWC on September 22. Convection increased which made Labuyo go on favorable conditions of becoming a Tropical Storm. It became Tropical Storm Lekima on September 24, as it was reported that 1 died. It rapidly became a typhoon and reached peak intensity as a Category 2 on September 27. A total of 2 had died in Taiwan due to strong winds and high waves. Due with land interaction, it was rapidly downgraded to a severe tropical storm and finally dissipated over China on September 30. Damages from this storm was unknown.

Typhoon Krosa

Typhoon Krosa was a fast-paced storm that peaked as a Category 3 typhoon. It formed on October 3 and was first classified as a tropical depression by the JMA. Later that day, it was designated 24W by the JTWC. It rapidly intensified to a tropical storm, naming it Krosa on October 4. Krosa then entered warm waters and deep convection later that day as it rapidly became a typhoon. On October 6, it reached peak intensity as a Category 3 storm and weakened to a Category 2 later that day. On October 7, Krosa entered cool waters as it rapidly weakened to a tropical storm. It dissipated on October 9 as it was absorbed by a trough of low-pressure. Krosa did not cause any damage or casualties, but it did affect the Micronesian Islands.

Typhoon Haiyan (Maring)

Tropical Depression 25W formed over the Philippine Sea on October 11. The PAGASA named it as Maring 3 hours later. Maring steadily moved northwards due to an intensifying high-pressure area moving southwestwards, as the JTWC upgraded it to a tropical storm on October 13. In the same time, Maring became Tropical Storm Haiyan. The next day, the three agencies, upgraded it to a typhoon. Typhoon Haiyan reached peak intensity as a category 2 on October 15, without furthering intensifying to a category 3. As the high-pressure moved westwards, Haiyan rapidly weakened to a minimal typhoon and moved westwards too, affecting Taiwan. Haiyan finally dissipated on October 18.

Throughout Japan and the Ryukyu Islands, two people were killed by the typhoon and another was injured. Damage from the storm amounted to 296.024 million yen ($3.4 million USD).

Typhoon Podul

Typhoon Podul became a super typhoon according to the JTWC, attaining strong winds but remaining away from land.

Typhoon Lingling (Nanang)

A tropical depression formed in the Philippine Sea on November 5. It moved westward, hitting the Philippines on the 6th. The depression strengthened over the archipelago, becoming a tropical storm on the 7th. Lingling continued to intensify, reaching a peak of 135 mph (217 km/h) winds on the 10th in the South China Sea. The next day, the typhoon hit central Vietnam as a 110 mph (180 km/h) typhoon, and dissipated on the 12th. Lingling, like most typhoons, brought torrential rains and flooding, resulting in 171 deaths in the Philippines (with 118 missing) and 18 deaths in Vietnam.

Tropical Depression 28W (Ondoy)

A tropical depression moved towards the Philippines in the middle of November before turning to the northeast, dissipating on November 25.

Tropical Depression 29W (Pabling)

A tropical wave formed west of Mindanao, Philippines on November 11. It started to move south southwestwards towards the southern part of the South China Sea. Due to the coriolis effect, it became a tropical disturbance on November 16. Still moving eastwards, the storm intensified into a depression by the JMA, two days later. Due to the strong pull from Tropical Storm 28W, it gathered more strength becoming Tropical Depression 29W, moving northwestwards and affecting Borneo. Late on November 20, 29W became a tropical storm. The next day, it moved westward, due to the dissipating 28W and entered the PAG, giving the name Pabling. It finally dissipated on November 24. This is the first storm to move in an eastward direction near the equator, since Tropical Storm Greg in 1996.

Tropical Storm Kajiki (Quedan)

In early December, a tropical storm moved across the Philippines.

Tropical Storm 31W

Initially classified by JTWC as the precursor of Faxai, but later found to be a separate system.

Typhoon Faxai (Roleta)

On December 13, a tropical depression formed in the open waters of the West Pacific. It drifted for 5 days, slowly organizing into a tropical storm on the 15th. As Faxai moved more quickly to the northwest, its wind speeds increased, becoming a typhoon on the 20th and rapidly intensifying to a peak of 180 mph (290 km/h) on the 23rd. Cooler waters and upper level shear weakened it until it became extratropical on the 25th. Faxai, the strongest storm of the year, was one of the most intense December typhoons ever recorded. Fortunately, it never approached land.

Initially Faxai was classified as part of Tropical Depression 31W, but post-analysis considers the early part of Faxai's life a separate storm. As such, Faxai was classified as 33W in post-analysis.

Two people were killed as a result of the storm and damage across several islands amounted to roughly $1 million.

Tropical Storm Vamei

Tropical Depression 32W formed 200 nautical miles (370 km) east of Singapore at 1200 UTC (2000 SGT) on December 26. It is extremely unusual to see tropical development this close to the equator. The initial position of 1.4° N means this storm formed only 85 nautical miles (157 km) north of the equator. On December 27 it was upgraded to Tropical Storm Vamei, and shortly thereafter it made landfall in Malaysia. Emerging into the Indian Ocean on December 29 as a Tropical Depression, it briefly re-strengthened before dissipating on January 1. The name Vamei was retired in 2004 and replaced with Peipah because of the unique formation and track of this storm.

Storm names

Within the North-western Pacific Ocean, both the Japan Meteorological Agency (JMA) and the Philippine Atmospheric, Geophysical and Astronomical Services Administration assign names to tropical cyclones that develop in the Western Pacific, which can result in a tropical cyclone having two names. The Japan Meteorological Agency's RSMC Tokyo — Typhoon Center assigns international names to tropical cyclones on behalf of the World Meteorological Organization's Typhoon Committee, should they be judged to have 10-minute sustained windspeeds of 65 km/h, (40 mph). While the Philippine Atmospheric, Geophysical and Astronomical Services Administration assigns names to tropical cyclones which move into or form as a tropical depression in their area of responsibility located between 135°E and 115°E and between 5°N-25°N even if the cyclone has had an international name assigned to it. The names of significant tropical cyclones are retired, by both PAGASA and the Typhoon Committee. Should the list of names for the Philippine region be exhausted then names will be taken from an auxiliary list of which the first ten are published each season. Unused names are marked in gray.

International names

During the season 26 named tropical cyclones developed in the Western Pacific and were named by the Japan Meteorological Agency, when it was determined that they had become tropical storms. These names were contributed to a list of a 140 names submitted by the fourteen members nations and territories of the ESCAP/WMO Typhoon Committee.

This is the only time that the name "Vipa" was used. Its spelling was corrected to "Wipha" in 2002.

Philippines

The Philippine Atmospheric, Geophysical and Astronomical Services Administration uses its own naming scheme for tropical cyclones in their area of responsibility. PAGASA assigns names to tropical depressions that form within their area of responsibility and any tropical cyclone that might move into their area of responsibility. Should the list of names for a given year prove to be insufficient, names are taken from an auxiliary list, the first 10 of which are published each year before the season starts. Starting in 2001, new sets of names are implemented.The names not retired from this list will be used again in the 2005 season. Names that were not assigned are marked in gray.

Retirement

The name Vamei was retired by the ESCAP/WMO Typhoon Committee. The name Peipah was chosen to replace Vamei.

Season effects

This table lists all the storms that developed in the western Pacific Ocean to the west of the International Date Line during the 2001 season. It includes their intensity, duration, name, landfalls, deaths, and damages. All damage figures are in 2001 USD. Damages and deaths from a storm include when the storm was a precursor wave or extratropical low.

References

2001 Pacific typhoon season Wikipedia


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