2001 Pacific typhoon season

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2001 Pacific typhoon season
2001 Pacific typhoon season summary.png
Season summary map
Seasonal boundaries
First system formedFebruary 17, 2001
Last system dissipatedDecember 29, 2001
Strongest storm
NameFaxai
 • Maximum winds195 km/h (120 mph)
(10-minute sustained)
 • Lowest pressure915 hPa (mbar)
Seasonal statistics
Total depressions44, 1 unofficial
Total storms25, 1 unofficial
Typhoons16
Super typhoons3 (unofficial)
Total fatalities1,195 total
Total damage$2.42 billion (2001 USD)
Related articles
Pacific typhoon seasons
1999, 2000, 2001, 2002, 2003

The 2001 Pacific typhoon season was the fourth and final consecutive year with below-average activity, making it the lowest four-year period of activity since 19761979. The season produced twenty-five named storms, sixteen typhoons and three super typhoons. It ran year-round in 2001, with most tropical cyclones in the northwestern Pacific Ocean tending between May and November.[1]

However the first named storm, Cimaron, did not develop until May 9. Taiwan suffered the most destruction from typhoons this year, with Typhoons Toraji, Nari, and Lekima being responsible for nearly 300 deaths in that island alone, making it one of the most deadliest typhoon seasons in recorded history in that island. In November, Typhoon Lingling impacted the Philippines, killing 171 people, making it one of the deadliest Philippine storms this century. The season ended with the formation of Tropical Storm Vamei during the last week of December. Vamei was notable for becoming the lowest latitude typhoon, at 1.5°N, ever to be observed in the Northwest Pacific.[2]

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.

Seasonal forecasts[]

TSR forecasts
Date
Tropical
storms
Total
Typhoons
Intense
TCs
Ref
Average (1971–2000) 27.2 17.0 8.2 [3]
January 31, 2001 28.1 16.2 6.6 [3]
June 15, 2001 26.1 17.5 8.7 [4]
2002 season Forecast
Center
Tropical
cyclones
Tropical
storms
Typhoons
Actual activity: JMA 43 25 16
Actual activity: JTWC 33 30 20
Actual activity: PAGASA 17 12 6

During the year, the Japan Meteorological Agency (JMA) issued advisories on tropical cyclones west of the International Date Line to the Malay Peninsula, and north of the equator, in its role as the official Regional Specialized Meteorological Center, as designated by the World Meteorological Organization in 1989. The JMA issued forecasts and analyses every six hours starting at midnight UTC using numerical weather prediction (NWP) and a climatological tropical cyclone forecast model. They used the Dvorak technique and NWP to estimate 10-minute sustained winds and barometric pressure. The JTWC also issued warnings on storms within the basin, operating from Pearl Harbor in Hawaii and supplying forecasts to the United States Armed Forces in the Indian and Pacific Oceans.

On January 31, Tropical Storm Risk (TSR) issued their extended range forecast for the Northwest Pacific in 2001, predicting near-average activity in terms of tropical storms, but a slightly below average in terms of typhoons. They predict that around 28 tropical storms would form, in which 17 of them would become typhoons, and 8 would further intensify to intense typhoons. TSR uses anomalous patterns of sea-surface temperatures (SSTs) over in the Niño 3.4 region (5°N-5°S, 120°W-170°W) during the August–September SST forecast as a predictor. With a predicted anomaly of -0.27 °C, a weak La Niña is expected — which tends to suppress tropical cyclone activity or intensity.[3] On June 15, TSR issued their pre-season forecast, predicting a neutral typhoon season. Predicted tropical storm numbers have decreased to 26, but both their predicted typhoon and intense typhoon numbers have increased to 18 and 9, respectively. The key factor to this prediction is now due to the anticipated neutral value for the August–September SST forecast in the Niño 4 region (5°S – 5°N, 150°W – 160°E) of +0.27 °C.[4]

Seasonal summary[]

Tropical Storm VameiTyphoon Lingling (2001)Typhoon Nari (2001)Tropical Storm Utor (2001)Tropical Storm Durian (2001)Typhoon Chebi (2001)

Systems[]

Tropical Depression 01W (Auring)[]

Tropical depression (JMA)
Tropical depression (SSHWS)
TD Auring 18 feb 2001 0250Z.jpg Auring 2001 track.png
DurationFebruary 17 – February 20
Peak intensity55 km/h (35 mph) (10-min)  1004 hPa (mbar)

On 18:00 UTC of February 17, both the JMA and PAGASA began to track a tropical depression that was located about 324 km (201 mi) to the northeast of Surigao of Northern Mindanao.[5] The PAGASA named the system, Auring. The JTWC followed suit and designated it 01W, six hours later. Auring moved westward and began traversing the Philippine archipelago of Visayas. By February 19, the PAGASA issued its final warning on Auring. The JTWC also issued its final advisory on the system on February 20.[6] The JMA downgraded the system to a low-pressure area, and its remnants tracked northward, where it was last noted off the coast of the Ilocos Region on February 23.[7]

Tropical Depression 01W (Auring) brought rainfall throughout most of Visayas and Mindanao. At least 18 people died, with most of these deaths due to landslides that occurred from the torrential rain. In Leyte and most of Mindanao, flooding submerged the homes of 159,785 people. Damages from crops and property have been estimated at 200 million (US$4.16 million).[6]

Tropical Depression 02W (Barok)[]

Tropical depression (JMA)
Tropical depression (SSHWS)
Barok 2001-04-17 0137Z.jpg Barok 2001 track.png
DurationApril 16 – April 18
Peak intensity45 km/h (30 mph) (10-min)  1004 hPa (mbar)

The PAGASA began issuing advisories on Tropical Depression Barok on 06:00 UTC of April 16, located to the wast of Palau. Six hours later, the JTWC followed suit on initiating advisories, where they designated it as 02W. Barok moved in a northwestward direction well to the east of the Philippines without any intensification. By April 19, both agencies stopped warning on the system when the depression quickly deteriorated. Even though warnings were discontinued, its remnants continued to show signs of life with several bursts of convection. This prompted the JTWC to issue a Tropical Cyclone Formation Alert (TCFA) on April 21, however its convection significantly weakened.[8]

Severe Tropical Storm Cimaron (Crising)[]

Severe tropical storm (JMA)
Tropical storm (SSHWS)
Cimaron May 13 2001 0220Z.jpg Cimaron 2001 track.png
DurationMay 9 – May 14
Peak intensity95 km/h (60 mph) (10-min)  985 hPa (mbar)

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

Typhoon Chebi (Emong)[]

Typhoon (JMA)
Category 3 typhoon (SSHWS)
Typhoon Chebi 22 jun 2001 2331Z.jpg Chebi 2001 track.png
DurationJune 19 – June 24
Peak intensity120 km/h (75 mph) (10-min)  965 hPa (mbar)

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.[9]

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 Belizean freighter that sank during the storm.[10] 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.[11] A rain laden typhoon, Chebi produced 100 millimeters of rain across Guangdong.[12] About 73 people were killed in China, most of them in the southeastern province of Fujian.[13] The storm also destroyed several thousand acres of crops, resulting in economic losses. In Ningde, about 321,400 houses were destroyed by the typhoon.[14] About 22 people were killed in Hangzhou when a landslide burst through a construction wall.[15]

Severe Tropical Storm Durian[]

Severe tropical storm (JMA)
Category 1 typhoon (SSHWS)
Typhoon Durian 01 july 2001 2301Z.jpg Durian 2001 track.png
DurationJune 29 – July 2
Peak intensity110 km/h (70 mph) (10-min)  970 hPa (mbar)

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 the Southeast Asian fruit of the same name.[citation needed]

Severe Tropical Storm Utor (Feria)[]

Severe tropical storm (JMA)
Category 1 typhoon (SSHWS)
Utor 2001-07-05 0240Z.jpg Utor 2001 track.png
DurationJuly 1 – July 7
Peak intensity110 km/h (70 mph) (10-min)  960 hPa (mbar)

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)[]

Tropical storm (JMA)
Tropical storm (SSHWS)
Trami Jul 10 2001 0255Z.jpg Trami 2001 track.png
DurationJuly 8 – July 11
Peak intensity75 km/h (45 mph) (10-min)  994 hPa (mbar)

The JMA began tracking on a tropical depression had developed east of the Philippines on July 8. Moving northwestward, the system gradually intensified, and the PAGASA began initiating advisories on 18:00 UTC of the same day, naming the system, Gorio. Six hours later, the JTWC already deemed the system as Tropical Depression 07W. Deep convection persisted to the west of its well-defined, but a partially exposed center. Thus, the system gained strength into a tropical storm, with the JMA naming it as Trami. Northeasterly shear prevented the storm to significantly intensify, and therefore Trami maintained tropical storm intensity for a day ― only peaking with 10-minute sustained wind speeds of 75 km/h (45 mph). By 12:00 UTC of July 11, Trami moved over Taiwan and into the Taiwan Strait, where Trami rapidly weakened and dissipated.[16]

Trami mostly affected Taiwan with just rainfall. However Kaohsiung and Pingtung counties experienced the heaviest rainfall in 40 years. In Kaohsiung City, streets were clogged with bonded cars due to severe flooding, and more than 100,000 homes were left without power. The floods resulted in only five deaths in the southern part of the city.[16]

Typhoon Kong-rey[]

Typhoon (JMA)
Category 2 typhoon (SSHWS)
Kong-rey 2001-07-26 0120Z.jpg Kong-Rey 2001 track.png
DurationJuly 21 – July 28
Peak intensity130 km/h (80 mph) (10-min)  955 hPa (mbar)

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)[]

Severe tropical storm (JMA)
Category 2 typhoon (SSHWS)
Yutu 24 july 2001 0310Z.jpg Yutu 2001 track.png
DurationJuly 22 – July 26
Peak intensity100 km/h (65 mph) (10-min)  975 hPa (mbar)

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

Typhoon Toraji (Isang)[]

Typhoon (JMA)
Category 3 typhoon (SSHWS)
Toraji Jul 28 2001 0245Z.jpg Toraji 2001 track.png
DurationJuly 25 – August 1
Peak intensity140 km/h (85 mph) (10-min)  960 hPa (mbar)

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 (US$245 million) in damage.[17][18] 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.[19]

Typhoon Man-yi[]

Typhoon (JMA)
Category 4 typhoon (SSHWS)
Typhoon Man-Yi 04 aug 2001 0112Z.jpg Man-Yi 2001 track.png
DurationAugust 1 – August 9
Peak intensity150 km/h (90 mph) (10-min)  955 hPa (mbar)

Man-yi became a strong typhoon, remaining away from land before dissipating on August 9 east of Japan.[20]

Tropical Storm Usagi[]

Tropical storm (JMA)
Tropical storm (SSHWS)
Usagi 2001-08-09 0310Z.jpg Usagi 2001 track.png
DurationAugust 8 – August 11
Peak intensity65 km/h (40 mph) (10-min)  992 hPa (mbar)

A weak tropical depression had persisted in the South China Sea, just west off Luzon on August 8. On the next day, operationally, the JTWC began on issuing advisories on the system as Tropical Depression 13W. However post-analysis showed that the system had already intensified into a tropical depression several hours earlier. Despite with an exposed center, a weak banding feature began to develop around it. Organization of the 13W improved slightly, and by August 10, the system had intensified into a tropical storm, with the JMA naming it Usagi. Usagi reached its maximum intensity only with 10-minute sustained wind speeds of 65 km/h (40 mph). By 18:00 UTC, Usagi moved inland Vietnam, just to the south of Hanoi, and therefore the JTWC issued its final advisory on the system. The storm continued moving westward over land until it was last noticed by the JMA on August 11.[20]

Typhoon Pabuk[]

Typhoon (JMA)
Category 2 typhoon (SSHWS)
Pabuk 2001-08-19 0210Z.jpg Pabuk 2001 track.png
DurationAugust 13 – August 22
Peak intensity130 km/h (80 mph) (10-min)  960 hPa (mbar)

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 (US$7.1 million).

Tropical Depression 15W[]

Tropical depression (JMA)
Tropical depression (SSHWS)
15W 2001-08-26 0035Z.jpg 15-W 2001 track.png
DurationAugust 24 – August 28
Peak intensity55 km/h (35 mph) (10-min)  1000 hPa (mbar)

On 12:00 UTC of August 24, the JMA started to track a weak tropical depression that had developed about 648 km (403 mi) to the northwest of Wake Island. Six hours later, the JTWC followed suit and began issuing advisories, giving the designation of 15W. The system slowly intensified within the next day. Despite bring predicted that the system would intensify into a tropical storm, the JTWC indicated that the system was beginning to merge with a frontal boundary.[20] Afterwards, 15W re-curved and began moving northwestward until it neared Hokkaido on 00:00 UTC of August 28, when the system was absorbed by a stationary front.[21]

Typhoon Wutip[]

Typhoon (JMA)
Category 4 super typhoon (SSHWS)
Wutip 29 aug 2001 0105Z.jpg Wutip 2001 track.png
DurationAugust 26 – September 2
Peak intensity165 km/h (105 mph) (10-min)  930 hPa (mbar)

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

Tropical Storm Sepat[]

Tropical storm (JMA)
Tropical storm (SSHWS)
TS Sepat 28 aug 0020Z.jpg Sepat 2001 track.png
DurationAugust 26 – August 30
Peak intensity85 km/h (50 mph) (10-min)  990 hPa (mbar)

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 Date Line to the south of the Aleutians.[20]

Tropical Storm Fitow[]

Tropical storm (JMA)
Tropical storm (SSHWS)
Fitow 30 August 2001.jpg Fitow 2001 track.png
DurationAugust 28 – September 1
Peak intensity65 km/h (40 mph) (10-min)  990 hPa (mbar)

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 (US$201.7 million). In all, 3680 houses were nearly destroyed, four died, and 3.5 million people were impacted by the weak tropical storm.[20]

Typhoon Danas[]

Typhoon (JMA)
Category 3 typhoon (SSHWS)
Danas 2001-09-08 0140Z.jpg Danas 2001 track.png
DurationSeptember 3 – September 14
Peak intensity155 km/h (100 mph) (10-min)  945 hPa (mbar)

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 Kantō region.[22] Throughout Japan, Danas was responsible for eight fatalities and injured 48. Damage from the storm amounted to 1.1 billion yen (US$12.8 million).

Typhoon Nari (Kiko)[]

Typhoon (JMA)
Category 3 typhoon (SSHWS)
Nari 2001-09-16 0230Z.jpg Nari 2001 track.png
DurationSeptember 5 – September 21
Peak intensity140 km/h (85 mph) (10-min)  960 hPa (mbar)

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[23] and up to 50 inches (1,300 mm) of rain led to torrential flooding.

Typhoon Vipa[]

Typhoon (JMA)
Category 1 typhoon (SSHWS)
Vipa 2001-09-21 0110Z.jpg Vipa 2001 track.png
DurationSeptember 17 – September 21
Peak intensity120 km/h (75 mph) (10-min)  975 hPa (mbar)

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. 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.[24]

Typhoon Francisco[]

Typhoon (JMA)
Category 3 typhoon (SSHWS)
Francisco 2001-09-23 0100z.jpg Francisco 2001 track.png
DurationSeptember 18 – September 25
Peak intensity155 km/h (100 mph) (10-min)  945 hPa (mbar)

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. Francisco became extratropical on September 25 and dissipated on September 26.

Typhoon Lekima (Labuyo)[]

Typhoon (JMA)
Category 2 typhoon (SSHWS)
Typhoon Lekima 26 sept 2001 0310Z.jpg Lekima 2001 track.png
DurationSeptember 22 – September 30
Peak intensity130 km/h (80 mph) (10-min)  965 hPa (mbar)

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 (JMA)
Category 3 typhoon (SSHWS)
Krosa 2001-10-05 0125Z.jpg Krosa 2001 track.png
DurationOctober 3 – October 9
Peak intensity150 km/h (90 mph) (10-min)  950 hPa (mbar)

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.[25]

Typhoon Haiyan (Maring)[]

Typhoon (JMA)
Category 2 typhoon (SSHWS)
Typhoon Haiyan 16 oct 2001 0245Z.jpg Haiyan 2001 track.png
DurationOctober 11 – October 18
Peak intensity130 km/h (80 mph) (10-min)  960 hPa (mbar)

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 (US$3.4 million).

Typhoon Podul[]

Typhoon (JMA)
Category 5 super typhoon (SSHWS)
Podul 2001-10-25 1155Z.jpg Podul 2001 track.png
DurationOctober 19 – October 27
Peak intensity185 km/h (115 mph) (10-min)  925 hPa (mbar)

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

Typhoon Lingling (Nanang)[]

Typhoon (JMA)
Category 4 typhoon (SSHWS)
Lingling 2001-11-10 0235Z.jpg Lingling 2001 track.png
DurationNovember 6 – November 12
Peak intensity155 km/h (100 mph) (10-min)  940 hPa (mbar)

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 130 mph (210 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.[26]

Tropical Depression 28W (Ondoy)[]

Tropical depression (PAGASA)
Tropical storm (SSHWS)
Ondoy 2001-11-20 0135Z.jpg Ondoy 2001 track.png
DurationNovember 17 – November 25
Peak intensity55 km/h (35 mph) (10-min)  996 hPa (mbar)

A tropical disturbance associated with the monsoon trough began to form about 315 km (196 mi) west-southwest of Pohnpei on November 14. Convection slowly deepened and the disturbance's structure began to consolidate. By 06:00 UTC of November 17, the JMA upgraded the system to a tropical depression. Animated satellite imagery revealed that its center became elongated with continued development of convection. This prompted the JTWC to begin issuing advisories as a tropical depression six hours later, giving the designation 28W. Maintaining its intensity, 28W tracked westward and entered the Philippine Area of Responsibility on November 20, with PAGASA to start issuing bulletins and naming it Ondoy. Later that day, the JTWC upgraded Ondoy to a tropical storm, peaking with 1-minute sustained winds of 65 km/h (40 mph). Shortly thereafter, Ondoy's center became partially exposed, with the JTWC downgrading the system back to a tropical depression. Within the next two days, Ondoy completed a loop to the east of Samar Island, and shifted its movement north-northwestward. The JTWC issued its final advisory on 18:00 UTC of November 24, however both the JMA and PAGASA still tracked the system until November 25.[26]

Tropical Depression 29W (Pabling)[]

Tropical depression (PAGASA)
Tropical storm (SSHWS)
Pabling 2001-11-22 0305Z.jpg Pabling 2001 track.png
DurationNovember 18 – November 24
Peak intensity55 km/h (35 mph) (10-min)  1004 hPa (mbar)

On November 18, the JMA began to track a tropical depression that had developed about 426 km (265 mi) northeast of Singapore. By the next day, the system began to drift eastward, with satellite imagery depicting a convective banding feature with some deep convection. The JTWC upgraded the system to a tropical depression and issued its first advisory on 06:00 UTC of November 20, receiving the designation 29W. 29W intensified into a tropical storm by the JTWC on 00:00 UTC of November 21, when the system's vortex became well-defined. By the next day, the storm entered the western portion of the Philippine area of responsibility, with PAGASA giving the name Pabling. On November 23, the JTWC downgraded Pabling back to a tropical depression after the system encountered increasing wind shear. The JTWC issued its final advisory shortly thereafter, when the storm was located just off the southern tip of Palawan. Pabling slowly dissipated the next day when it emerged in the waters of the Sulu Sea.[26]

This is the first storm to move in an eastward direction at very low latitudes, since Tropical Storm Greg in 1996.[26]

Tropical Storm Kajiki (Quedan)[]

Tropical storm (JMA)
Tropical storm (SSHWS)
Kajiki 2001-12-08.jpg Kajiki 2001 track.png
DurationDecember 4 – December 9
Peak intensity65 km/h (40 mph) (10-min)  996 hPa (mbar)

In the first few days of December, an area of convection developed to the south of Guam. By December 4, both the JMA and the PAGASA upgraded the system into a tropical depression, with the PAGASA naming it Quedan. After deep convection was seen developing from multi-spectral imagery, the JTWC followed suit and began issuing advisories on 00:00 UTC of December 5 ― giving the identifier of 30W. On the same day, the system intensified into a tropical storm, with the JMA naming it as Kajiki. Kajiki moved in a west-northwestward direction, traversing the islands of Visayas. By December 7, Kajiki emerged to the South China Sea, where unfavorable wind shear weakened the system. At this point, the storm's center started to become exposed and the storm's structure started to deteriorate. Both the JTWC and the JMA downgraded Kajiki to a tropical depression on the next day. The JMA tracked Kajiki until it neared the eastern coast of Vietnam on December 9.[27]

In the Philippines, Kajiki (Quedan) brought only light to moderate rainfall over Visayas. Only two people were dead, while a total of 6,400 people were displaced. Even though Kajiki remained far away from China, heavy rainfall from the storm's outflow was seen in the Hainan and Guandong provinces. In Xuwen County, 70 millimetres (2.8 in) of rainfall was recorded in a 24-hour period from December 9 to 10. Qiongzhong County received the highest amount of precipitation, with a recorded 249 millimetres (9.8 in). In Hainan, the heavy rainfall mostly led to agricultural losses, damaging up to ¥90.57 million (US$14 million).[27]

Tropical Storm 31W[]

Tropical storm (SSHWS)
Temporary cyclone north.svg 31-W 2001 track.png
DurationDecember 10 – December 13
Peak intensity65 km/h (40 mph) (1-min)  997 hPa (mbar)

Operationally the same system as Typhoon Faxai, an area of unorganised convection in a region of weak to moderate vertical wind shear had persisted to the southwest of Pohnpei on December 10. By 12:00 UTC of the same day, the JTWC upgraded the system to Tropical Depression 31W. Satellite imagery and animations showed that there were multiple centers within the large-scale center, which made it difficult to track. By December 12, the system finally gained convection near its center. 31W briefly reached tropical storm intensity by the JTWC on 18:00 UTC of the same day. The storm was still difficult to track, which made one warning relocating the storm's center near the island of Kosrae. However, after post-analysis, this center was a newly developed center that originated from the same surface trough of 31W. This new center eventually became Tropical Storm Faxai.[27]

Typhoon Faxai[]

Typhoon (JMA)
Category 5 super typhoon (SSHWS)
Faxai Dec 23 2001 0040Z.jpg Faxai 2001 track.png
DurationDecember 13 – December 25
Peak intensity195 km/h (120 mph) (10-min)  915 hPa (mbar)

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 storm (JMA)
Category 1 typhoon (SSHWS)
Vamei 2001-12-27 0123Z.jpg Vamei 2001 track.png
DurationDecember 26 – December 29
(Exited basin)
Peak intensity85 km/h (50 mph) (10-min)  1006 hPa (mbar)

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.[citation needed]

Other systems[]

A tropical depression over Shanghai on August 6

On May 6, the JMA tracked a weak tropical depression off the northeastern coast of Mindanao. The system degenerated into a low-pressure area the next day.[28] On June 16, the PAGASA began initiating advisories on Tropical Depression Darna, that has developed just off the eastern coast of Luzon. As the system moved near the extreme northern portion of the archipelago, the system began in a north-northeastward trajectory towards Taiwan. On June 19, the JMA followed suit on classifying Darna to a tropical depression, however, being located in an area of weakly sheared environment, the system rapidly weakened and dissipated.[9][29]

The JTWC began tracking Tropical Depression 08W about 972 km (604 mi) southwest of Midway Atoll on July 10. 08W was known as a "hybrid system", where it developed in an area of strong wind shear and the system was already becoming extratropical. The JTWC issued its second and final warning early the next day. The storm's remnants moved outside the basin early on July 12.[16] On July 16, the JMA began to monitor a tropical depression about 833 km (518 mi) east-northeast of Iwo Jima. The depression moved in a slow, erratic direction, and began moving east-northeastward. By July 18, the system was approaching a shortwave trough, causing it to weaken and dissipate the next day.[16]

On August 2, the JMA started to track a tropical depression that had developed about 972 km (604 mi) southeast of Okinawa. The depression moved in a west-northwestward track until it was lasted noted to the east of Taiwan.[20][30] Presumably related from the previous system, the JMA began to track another tropical depression that had developed near Shanghai on August 5.[31] The system emerged to the Yellow Sea and impacted the Korean Peninsula on August 7, before dissipating on the next day. This tropical depression brought heavy rainfall across eastern China, with Huangpu District, Shanghai getting 289 mm (11.4 in) of rainfall. Due to this, 30,000 houses were destroyed, and moreover, the system produced a tornado near the area.[20]

On August 16, the PAGASA started to track Tropical Depression Jolina to the west of Dagupan City. The depression slowly meandered in the place until its system's center became exposed, and dissipated on August 21.[20]

On October 20, a tropical depression had developed a couple hundred miles east of the coast of Vietnam. The JTWC issued a TCFA when the system was embedded in a broad area of convection. However this was cancelled the next day when the system moved over Vietnam and dissipated. The tropical depression brought torrential rains all over Vietnam, which worsened the flooding that has been existing since August. 39 people have died with the added effects from the system, and damage totals from the overall flooding had reached 1.5 trillion (US$66.6 million).[25]

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.[32] 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).[33] 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.[32] The names of significant tropical cyclones are retired, by both PAGASA and the Typhoon Committee.[33] 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.

Cimaron Chebi Durian Utor Trami Kong-rey Yutu Toraji Man-yi Usagi Pabuk Wutip Sepat
Fitow Danas Nari Vipa Francisco Lekima Krosa Haiyan Podul Lingling Kajiki Faxai Vamei

This is the only time that the names "Vipa" and "Vamei" was used. The former's spelling was corrected to "Wipha" in 2002,[24] while the latter was retired.

Philippines[]

Auring Barok Crising Darna Emong
Feria Gorio Huaning Isang Jolina
Kiko Labuyo Maring Nanang Ondoy
Pabling Quedan Roleta (unused) Sibak (unused) Talahib (unused)
Ubbeng (unused) Vinta (unused) Wilma (unused) Yaning (unused) Zuma (unused)
Auxiliary list
Alamid (unused) Bruno (unused) Conching (unused) Dolor (unused) Ekis (unused)
Fuerza (unused) Gimbal (unused) Hampas (unused) Isko (unused) Juego (unused)

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. The name "Nanang" was retired by PAGASA and was replaced by Nando for 2005.

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.

Name Dates active Peak classification Sustained
wind speeds
Pressure Areas affected Damage
(USD)
Deaths Refs
01W (Auring) February 17–20 Tropical depression 55 km/h (35 mph) 1,004 hPa (29.65 inHg) Philippines $4.16 million 18
02W (Barok) April 16–18 Tropical depression 45 km/h (30 mph) 1,004 hPa (29.65 inHg) None None None
TD May 6–7 Tropical depression Not specified 1,004 hPa (29.65 inHg) Philippines None None
Cimaron (Crising) May 9–14 Severe tropical storm 95 km/h (60 mph) 985 hPa (29.09 inHg) Philippines, Taiwan $555,000 None
Darna June 17–19 Tropical depression 55 km/h (35 mph) 1,000 hPa (29.53 inHg) Philippines, Taiwan Unknown None
Chebi (Emong) June 19–24 Typhoon 120 km/h (75 mph) 965 hPa (28.50 inHg) Philippines, China, Taiwan $471 million 108
Durian June 29 – July 2 Severe tropical storm 95 km/h (60 mph) 970 hPa (28.64 inHg) China, Vietnam $422 million 110
Utor (Feria) July 1 – July 7 Severe tropical storm 110 km/h (70 mph) 960 hPa (28.35 inHg) Philippines, China, Taiwan $332 million 197
Trami (Gorio) July 8–11 Tropical storm 75 km/h (45 mph) 994 hPa (29.35 inHg) Philippines, Taiwan, China Unknown 5
08W July 10–11 Tropical depression 45 km/h (30 mph) 1,002 hPa (29.59 inHg) None None None
TD July 16–19 Tropical depression Not specified 1,004 hPa (29.65 inHg) None Unknown None
Kong-rey July 21–28 Typhoon 130 km/h (80 mph) 955 hPa (28.2 inHg) None None None
Yutu (Huaning) July 22–26 Severe tropical storm 100 km/h (65 mph) 975 hPa (28.79 inHg) Philippines, Vietnam, China $108 million None
Toraji (Isang) July 25 – August 1 Typhoon 140 km/h (85 mph) 960 hPa (28.35 inHg) Philippines, Taiwan, China $245 million 200
Man-yi August 1–9 Typhoon 150 km/h (90 mph) 955 hPa (28.2 inHg) Mariana Islands $50,000 None
TD August 2–3 Tropical depression Not specified 1,004 hPa (29.65 inHg) Taiwan, Ryukyu Islands None None
TD August 5–8 Tropical depression Not specified 1,000 hPa (29.53 inHg) East China, Korea None None
Usagi August 8–11 Tropical storm 65 km/h (45 mph) 992 hPa (29.29 inHg) China, Vietnam, Laos, Thailand $3.2 million 3
Pabuk August 13–22 Typhoon 130 km/h (80 mph) 960 hPa (28.35 inHg) Mariana Islands, Japan $7.1 million 6
Jolina August 16–19 Tropical depression 55 km/h (35 mph) 998 hPa (29.47 inHg) Philippines None None
TD August 22–24 Tropical depression Not specified 1,000 hPa (29.53 inHg) None None None
TD August 22–23 Tropical depression Not specified 1,002 hPa (29.59 inHg) None None None
15W August 24–28 Tropical depression 55 km/h (35 mph) 1,000 hPa (29.53 inHg) None None None
Wutip August 26 – September 2 Typhoon 165 km/h (105 mph) 930 hPa (27.46 inHg) None None None
Sepat August 26–30 Tropical storm 85 km/h (50 mph) 990 hPa (29.23 inHg) None None None
Fitow August 28 – September 1 Tropical storm 85 km/h (50 mph) 990 hPa (29.23 inHg) China $202 million 4
Danas September 3–14 Typhoon 155 km/h (100 mph) 945 hPa (27.91 inHg) Japan $12.8 million 9
Nari (Kiko) September 5–21 Typhoon 140 km/h (85 mph) 960 hPa (28.35 inHg) Japan, Taiwan, China $443 million 104
TD September 5–7 Tropical depression Not specified 1,002 hPa (29.59 inHg) South China None None
TD September 8–10 Tropical depression Not specified 1,000 hPa (29.53 inHg) Taiwan, Ryukyu Islands None None
TD September 9–12 Tropical depression Not specified 1,000 hPa (29.53 inHg) South China, Vietnam None None
Vipa September 17–21 Typhoon 120 km/h (75 mph) 975 hPa (28.79 inHg) Japan None None
Francisco September 18–25 Typhoon 155 km/h (100 mph) 945 hPa (27.91 inHg) None None None
Lekima (Labuyo) September 22–30 Typhoon 130 km/h (80 mph) 965 hPa (28.5 inHg) Philippines, Taiwan, China Unknown 2
Krosa October 3–9 Typhoon 150 km/h (90 mph) 950 hPa (28.05 inHg) Mariana Islands None None
Haiyan (Maring) October 11–18 Typhoon 130 km/h (80 mph) 960 hPa (28.35 inHg) Taiwan, Japan $3.4 million 2
Podul October 19–27 Typhoon 185 km/h (115 mph) 925 hPa (27.32 inHg) Caroline Islands None None
TD October 20–21 Tropical depression Not specified 1,002 hPa (29.59 inHg) Vietnam $66.6 million 39
Lingling (Nanang) November 6–12 Typhoon 155 km/h (100 mph) 940 hPa (27.76 inHg) Philippines, Vietnam, Cambodia $70.3 million 379
28W (Ondoy) November 17–25 Tropical depression 55 km/h (35 mph) 996 hPa (29.41 inHg) Caroline Islands, Mariana Islands, Philippines None None
29W (Pabling) November 18–23 Tropical depression 55 km/h (35 mph) 1,004 hPa (29.65 inHg) Philippines, Malaysia, Brunei, Indonesia None None
Kajiki (Quedan) December 4–9 Tropical storm 65 km/h (40 mph) 996 hPa (29.41 inHg) Philippines, Vietnam $14 million 2
31W December 10–12 Tropical storm 65 km/h (40 mph) 997 hPa (29.44 inHg) Caroline Islands None None
Faxai December 13–25 Typhoon 195 km/h (120 mph) 915 hPa (27.02 inHg) Caroline Islands, Mariana Islands, Philippines $1 million 2
Vamei December 26–29 Tropical storm 85 km/h (50 mph) 1,006 hPa (29.71 inHg) Singapore, Malaysia, Indonesia $3.6 million 5
Season aggregates
45 systems February 17 – December 29 195 km/h (120 mph) 915 hPa (27.02 inHg) $2.42 billion 1,195

See also[]

References[]

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