Typhoon Chanthu (2021) Explained

Typhoon Chanthu (2021) should not be confused with Typhoon Chanchu.

Typhoon Chanthu (Kiko)
Formed:September 5, 2021
Extratropical:September 18, 2021
Dissipated:September 20, 2021
Winds:115
Pressure:905
Winds:155
Pressure:902
Basin:WPac
Year:2021
Fatalities:None
Damages:30000000
Damagespre:≥
Areas:Philippines, Taiwan, China, Japan, South Korea
Season:2021 Pacific typhoon season

Typhoon Chanthu, known in the Philippines as Super Typhoon Kiko,[1] was the second most intense tropical cyclone worldwide in 2021 after Typhoon Surigae in April. It impacted the Cagayan Valley region of the Philippines and became the strongest typhoon to affect the Batanes province since Typhoon Meranti in 2016. The twenty-ninth tropical depression, fourteenth named storm and fourth typhoon of the 2021 Pacific typhoon season, Chanthu originated from a disturbance well east of the Philippine islands on September 5 which organized into a tropical depression later that day. By the next day, the depression had formed into a mature tropical storm which began to explosively intensify by September 7, featuring a pinhole eye on satellite, characteristic of rapidly intensifying storms. Chanthu became a Category 5-equivalent super typhoon by September 8, the highest category on the Saffir–Simpson scale. Subsequent eyewall replacement cycles caused intensity fluctuations, but on September 10, Chanthu peaked with 1-minute sustained winds of 285round=10NaNround=10 just northeast of extreme northeastern Luzon. The typhoon passed very near the Babuyan Islands before passing directly over Ivana, Batanes as a weakening but still powerful Category 5-equivalent super typhoon. Chanthu continued steadily weakening as it passed just east of Taiwan and eventually stalled just east of Shanghai, China. The storm eventually made its second and final landfall near Ikitsuki, Nagasaki in Japan, before crossing the country's mountainous terrain and becoming an extratropical cyclone on September 18. Chanthu then continued eastward and curved southward, before dissipating on September 20. According to Aon Benfield, economic losses totaled US$30 million.[2]

Meteorological history

At 06:00 UTC on September 5, the JTWC began to monitor an area of disturbed weather that had formed from Legazpi, Philippines.[3] At 18:00 UTC the same day, the JMA declared the system a tropical depression.[4] Later in the day, the JTWC issued a Tropical Cyclone Formation Alert as the system's low-level circulation center and its surrounding convection had improved significantly in organization.[5] At 09:00 UTC the next day, the JTWC upgraded the disturbance to a tropical depression, designating as 19W.[6] At 21:00 UTC, the JTWC upgraded it to a tropical storm; they also noted the formation of an eye-like feature on satellite images.[7] The JMA later did the same at 00:00 UTC of September 7, providing the name Chanthu.[8] At 09:30 UTC, the PAGASA reported that Chanthu entered the Philippine Area of Responsibility (PAR) and was named Kiko.[9] At 12:00 UTC, as satellite based intensity estimates from the Dvorak technique increased, the JMA upgraded Chanthu to a severe tropical storm.[10] At the same moment, Chanthu started rapid intensification as it quickly became a Category 1-equivalent typhoon. Satellite imagery indicate a development of a vertical hot tower over its center, with microwave imagery indicating that it had developed a very small eye feature.[11] [12] At 15:00 UTC, it had become a Category 2-equivalent typhoon, as it continued explosive intensification. A pinhole eye, a typical sign of a rapidly intensifying tropical cyclone, had developed by that time.[13] Six hours later, the typhoon reached Category 4 status, with one-minute sustained wind speeds of .[14] By the next day, at 09:00 UTC, Chanthu had reached Category 5-equivalent intensity, developing a -wide eye which was by very intense convection,[15] [16] making it the second super typhoon of the year and marking the storm's initial peak intensity.

After reaching its initial peak, Chanthu was downgraded to a Category 4-equivalent super typhoon at 09:00 UTC on September 9, as its highly compact eye started to become cloud-filled, indicating the start of an eyewall replacement cycle.[17] However, shortly after, Chanthu quickly re-intensified into a Category 5-equivalent super typhoon yet again at 09:00 UTC that day, as its eye became clear again.[18] On 05:00 PhST of September 11 (21:00 UTC of September 10), the PAGASA reported that Chanthu passed to the east of the Babuyan Islands;[19] at 08:30 PhST (00:30 UTC), Chanthu made landfall in Ivana, Batanes as a Category 5 super typhoon with 1-minute sustained winds of 270 km/h (165 mph) as the storm began to weaken slightly.[20] [21] At 15:00 UTC on September 11, Chanthu weakened to a Category 4-equivalent typhoon as it continued to move northward because of the presence of dry air.[22] It was further downgraded to a Category 3-equivalent typhoon by the JTWC on September 12 at 03:00 UTC as it moved towards the east coast of Taiwan, experiencing multiple eyewall replacement cycles, increasing wind shear and dry, stable air.[23] Three hours later, the PAGASA issued its last bulletin on the system since it had exited the PAR.[24] At 15:00 UTC, Chanthu weakened to a Category 2-equivalent typhoon as the dry air started to hamper the typhoon's convective structure. According to satellite imagery, the low-level circulation center had become ill-defined and the eye started to collapse.[25] The weakening trend of Chanthu continued as it moved further northward towards the Korean Peninsula because of increasing wind shear, dry air and cool sea surface temperatures.[26] [27] At 09:00 UTC of September 13, Chanthu further weakened into a Category 1 typhoon as it moved further north towards Shanghai.[28] By 15:00 UTC, the eye of Chanthu had completely collapsed.[29] Chanthu remained quasi-stationary near Shanghai because of weak steering flow.[30] [31] At 06:00 UTC the next day, the JMA downgraded Chanthu to a severe tropical storm as it moved southeastward.[32] Three hours later, the JTWC downgraded Chanthu to a tropical storm as its low-level circulation became partially exposed, with convection only remaining to the north and west.[33] At 12:00 UTC, the JMA further downgraded it to a tropical storm as it slowly moved south-eastward towards Japan.[34] At 00:00 UTC on September 15, due to decreasing wind shear and marginally favorable sea surface temperatures, Chanthu re-strengthened and was re-classified as a severe tropical storm that day.[35] After continued slow movement, on September 17 at 09:00 UTC, Chanthu made landfall near itsuki, Nagasaki in Japan.[36] It continued to move northward as it moved through the rugged Japanese islands, causing it to weaken significantly.[37] This caused the JMA to downgrade it to a tropical storm at 12:00 UTC.[38] At 21:00 UTC, the JTWC downgraded it to a tropical depression as it rapidly collapsed because of the rugged terrain; it was also undergoing extratropical transition.[39] On September 18 at 08:00 UTC, the JTWC issued its final warning for the system, as the system became extratropical.[40] Afterward, Chanthu's remnant continued moving eastward and then curved southward, before dissipating on September 20.

Preparations

In the Philippines, 415 people were evacuated.[41] As Chanthu came closer towards Luzon, the PAGASA issued Signal No. 1 warnings over Cagayan and Isabela provinces.[42] At 23:00 PhST of September 9, the PAGASA raised a Signal No. 2 warning over the northeastern portion of Cagayan and eastern portion of Babuyan and Signal No. 1 was further extended over Batanes, rest of Cagayan and Babuyan, northeastern portion of Apayao and eastern portion of Isabela.[43] At 05:00 PhST the next day, a Signal No. 3 warning was raised over Santa Ana, Cagayan.[44]

At 05:30 NST of September 10, the Central Weather Bureau in Taiwan issued a sea warning,[45] which was followed by a land warning for Super Typhoon Chanthu.[46] At 17:00 PhST, the PAGASA raised a Signal No. 4 warning over the northeastern portion of Babuyan Islands.[47] President of Taiwan, Tsai Ing-wen advised people to stay indoors due to torrential rain and strong winds.[41] Transportation in Taiwan was also halted, with over 100 flights,[48] trains and 46 ferries to Matsu and other surrounding islands cancelled.[41] Around 2,000 people in landslide-prone areas in the eastern portions of Hualien County were evacuated, and sections of highway in the area were closed by authorities. The Taiwanese Defence Ministry put 31,000 troops on standby.[48]

The storm shut down both China's Shanghai Port and the Port of Ningbo-Zhoushan, the world's largest port by cargo throughput, between September 12–14. About 86 vessels were left waiting outside the ports.[49]

Impact

Philippines

The Batanes Islands suffered a direct hit from Chanthu, which destroyed infrastructure and caused power outages there. Some local residents called it "the strongest typhoon" they had seen.[50] More than 30,000 residents were affected in the Ilocos, Cagayan Valley, Central Luzon and the Cordillera Administrative Region. Four municipalities lost power, and one municipality experienced a water supply outage; those services were not restored as of September 15. There were also reports of landslides and flooding, mostly from Ilocos and Central Luzon. According to the National Disaster Risk Reduction and Management Council (NDRRMC), total damages from the typhoon were up to ₱37.4 million (US$748,000).[51]

Taiwan

The eastern portions of Hualien and Taitung counties received around 200mm of rain from the typhoon. The storm brought waves of up to 7m (23feet) on Orchid Island. Authorities reported that 26,000 houses lost power.[52] The capital city of Taiwan, Taipei, also received heavy rainfall. Winds up to were reported.[53]

South Korea

As Chanthu passed near the island of Jeju, it caused winds up to and of rainfall. There were reports of structural damage and overwhelmed drainage systems on the island. 23 flights were grounded and 48 ferry sailings were cancelled.[54]

Japan

Chanthu left seven people injured across Japan while it traversed the country as a weakening system. Train services were suspended and flights cancelled as a result of adverse weather. Over 7,000 households on Kyushu lost power. In Mihama, Wakayama, strong winds damaged the roofs of 50 houses and shattered several windows.[55]

See also

External links

Notes and References

  1. News: PAGASA redefines 'super typhoon', revises wind signals . . March 23, 2022 . August 29, 2022.
  2. Global Catastrophe Recap: October 2020. Aon Benfield Inc.. October 2020. November 11, 2021. November 11, 2021. https://web.archive.org/web/20211111171608/http://thoughtleadership.aon.com/Documents/20211011-analytics-if-october-global-recap.pdf. live.
  3. September 6, 2021. Significant Advisory for Western and Southern Pacific. https://web.archive.org/web/20210905000000/https://www.metoc.navy.mil/jtwc/products/abpwweb.txt. September 5, 2021. Alt URL
  4. Web site: JMA Weather and Summary 051800. Japan Meteorological Agency. Tokyo, Japan. September 5, 2021. September 6, 2021. https://archive.today/20210906024050/https://www.wis-jma.go.jp/d/o/RJTD/Alphanumeric/Warning/Warnings_and_weather_summary/20210905/180000/A_WWJP27RJTD051800_C_RJTD_20210905202745_100.txt. September 6, 2021. live.
  5. September 6, 2021. tcfa. 95W. https://www.metoc.navy.mil/jtwc/products/wp9521web.txt. https://web.archive.org/web/20210905000000/https://www.metoc.navy.mil/jtwc/products/wp9521web.txt. September 5, 2021. Alt URL
  6. September 6, 2021. warn. 19W. Nineteen. TD. 1. https://www.metoc.navy.mil/jtwc/products/wp1921web.txt. https://web.archive.org/web/20210906000000/https://www.metoc.navy.mil/jtwc/products/wp1921web.txt. September 6, 2021. Alt URL
  7. September 6, 2021. September 7, 2021. prog. 19W. Nineteen. TS. 3. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210906000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 6, 2021. Alt URL
  8. Web site: RSMC Prognostic Reasoning No. 3 for Tropical Storm Chanthu (2114). Japan Meteorological Agency. Tokyo, Japan. September 5, 2021. September 6, 2021. https://archive.today/20210907024103/https://tgftp.nws.noaa.gov/data/raw/wt/wtpq31.rjtd..txt. September 7, 2021. live.
  9. September 7, 2021. September 10, 2021. Kiko. Chanthu. tcb. TY. 1. https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_kiko.pdf. live. 2021-09-07. https://web.archive.org/web/20210907162029/https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_kiko.pdf. Alt URL
  10. Web site: RSMC Prognostic Reasoning No. 5 for Severe Tropical Storm Chanthu (2114). Japan Meteorological Agency. Tokyo, Japan. September 7, 2021. September 7, 2021. https://archive.today/20210907142212/https://tgftp.nws.noaa.gov/data/raw/wt/wtpq31.rjtd..txt. September 7, 2021. live.
  11. September 7, 2021. prog. 19W. Chanthu. TY. 5. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210907000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 7, 2021. Alt URL
  12. September 7, 2021. prog. 19W. Chanthu. TY. 6. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210907000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 7, 2021. Alt URL
  13. September 7, 2021. prog. 19W. Chanthu. TY. 6A. https://wiki.chlod.net/jtwc/prog/2021-09-07-1520-wp1921prog.txt.
  14. September 7, 2021. September 8, 2021. prog. 19W. Chanthu. TY. 7. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210907000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 7, 2021. Alt URL
  15. September 8, 2021. warn. 19W. Chanthu. STY. 9. https://www.metoc.navy.mil/jtwc/products/wp1921web.txt. https://web.archive.org/web/20210908101646/https://www.metoc.navy.mil/jtwc/products/wp1921web.txt. September 8, 2021.
  16. September 8, 2021. prog. 19W. Chanthu. STY. 9. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210908102131/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 8, 2021.
  17. September 9, 2021. prog. 19W. Chanthu. STY. 13. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210909000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 9, 2021. Alt URL
  18. September 10, 2021. prog. 19W. Chanthu. STY. 17. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210910000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 10, 2021. Alt URL
  19. September 9, 2021. September 10, 2021. Kiko. Chanthu. tcb. TY. 19. https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_kiko.pdf. live. 2021-09-07. https://web.archive.org/web/20210907162029/https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_kiko.pdf. Alt URL
  20. dost_pagasa. 1436496364616052736. At 8:30 AM today, Typhoon #KikoPH made landfall over Ivana, Batanes..
  21. dost_pagasa. 1436529898575654914. TROPICAL CYCLONE BULLETIN NO. 21 Typhoon “#KikoPH” (CHANTHU) Issued at 11 AM, 11 September 2021 Valid for broadcast until the next bulletin at 2 PM today “KIKO” SLIGHTLY WEAKENS AND IS NOW MOVING OVER THE COASTAL WATERS OF ITBAYAT, BATANES.
  22. September 11, 2021. September 13, 2021. prog. 19W. Chanthu. TY. 22. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210911000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 11, 2021. Alt URL
  23. September 12, 2021. September 13, 2021. prog. 19W. Chanthu. TY. 23. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210912000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 12, 2021. Alt URL
  24. September 12, 2021. September 15, 2021. Kiko. Chanthu. tcb. TY. 29-FINAL. https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_kiko.pdf. live. 2021-09-07. https://web.archive.org/web/20210907162029/https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_kiko.pdf. Alt URL
  25. September 12, 2021. September 13, 2021. prog. 19W. Chanthu. TY. 26. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210912000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 12, 2021. Alt URL
  26. September 12, 2021. prog. TY. 19W. 27. Chanthu. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210912000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 12, 2021. September 13, 2021. Alt URL
  27. September 13, 2021. prog. TY. 19W. 28. Chanthu. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210913000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 13, 2021. Alt URL
  28. September 13, 2021. prog. TY. 19W. 29. Chanthu. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210913000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 13, 2021. Alt URL
  29. September 13, 2021. prog. TY. 19W. 30. Chanthu. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210913000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 13, 2021. September 14, 2021. Alt URL
  30. Web site: September 14, 2021. RSMC Prognostic Reasoning No. 31 for Typhoon 2114 (Chanthu). https://archive.today/20210914034107/https://tgftp.nws.noaa.gov/data/raw/wt/wtpq31.rjtd..txt. September 14, 2021. September 14, 2021. Japan Meteorological Agency. Tokyo, Japan. live.
  31. September 14, 2021. prog. TY. 19W. 32. Chanthu. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210914000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 14, 2021. Alt URL
  32. Web site: September 14, 2021. RSMC Prognostic Reasoning No. 32 for Severe Tropical Storm 2114 (Chanthu). https://web.archive.org/web/20210914093047/https://tgftp.nws.noaa.gov/data/raw/wt/wtpq31.rjtd..txt. September 14, 2021. September 14, 2021. Japan Meteorological Agency. Tokyo, Japan.
  33. September 14, 2021. prog. TS. 19W. 33. Chanthu. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210914000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 14, 2021. Alt URL
  34. Web site: September 14, 2021. RSMC Prognostic Reasoning No. 33 for Tropical Storm 2114 (Chanthu). https://archive.today/20210914143129/https://tgftp.nws.noaa.gov/data/raw/wt/wtpq31.rjtd..txt. September 14, 2021. September 14, 2021. Japan Meteorological Agency. Tokyo, Japan. live.
  35. Web site: September 16, 2021. RSMC Prognostic Reasoning No. 39 for Severe Tropical Storm 2114 (Chanthu). https://archive.today/20210916032406/https://tgftp.nws.noaa.gov/data/raw/wt/wtpq31.rjtd..txt. September 16, 2021. September 18, 2021. Japan Meteorological Agency. Tokyo, Japan. live.
  36. September 17, 2021. prog. TS. 19W. 45. Chanthu. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210917000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 17, 2021. September 18, 2021. Alt URL
  37. September 17, 2021. prog. TS. 19W. 46. Chanthu. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210917000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 17, 2021. September 18, 2021. Alt URL
  38. Web site: September 17, 2021. RSMC Prognostic Reasoning No. 45 for Tropical Storm 2114 (Chanthu). https://archive.today/20210917150046/https://www.wis-jma.go.jp/d/o/RJTD/Alphanumeric/Warning/Tropical_cyclone/20210917/120000/A_WTPQ31RJTD171200_C_RJTD_20210917134818_52.txt. September 17, 2021. September 18, 2021. Japan Meteorological Agency. Tokyo, Japan. dead.
  39. September 17, 2021. prog. TD. 19W. 47. Chanthu. https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. https://web.archive.org/web/20210917000000/https://www.metoc.navy.mil/jtwc/products/wp1921prog.txt. September 17, 2021. September 18, 2021. Alt URL
  40. September 18, 2021. warn. TD. 19W. 48-FINAL. Chanthu. https://www.metoc.navy.mil/jtwc/products/wp1921web.txt. https://web.archive.org/web/20210918000000/https://www.metoc.navy.mil/jtwc/products/wp1921web.txt. September 18, 2021. September 18, 2021. Alt URL
  41. News: DW. Typhoon Chanthu set for Taiwan after lashing Philippines. September 11, 2021. September 15, 2021. September 14, 2021. https://web.archive.org/web/20210914103710/https://www.dw.com/en/typhoon-chanthu-set-for-taiwan-after-lashing-philippines/a-59151946. live.
  42. September 9, 2021. September 10, 2021. Kiko. Chanthu. tcb. TY. 6. https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_kiko.pdf. live. 2021-09-07. https://web.archive.org/web/20210907162029/https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_kiko.pdf. Alt URL
  43. September 9, 2021. September 10, 2021. Kiko. Chanthu. tcb. TY. 9. https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_kiko.pdf. live. 2021-09-07. https://web.archive.org/web/20210907162029/https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_kiko.pdf. Alt URL
  44. September 9, 2021. September 10, 2021. Kiko. Chanthu. tcb. TY. 11. https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_kiko.pdf. live. 2021-09-07. https://web.archive.org/web/20210907162029/https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin_kiko.pdf. Alt URL
  45. Web site: Keoni Everington. Taiwan issues sea warning for Super Typhoon Chanthu Taiwan News 2021-09-10 10:31:00. September 11, 2021. www.taiwannews.com.tw. 2021-09-11. https://web.archive.org/web/20210911061304/https://www.taiwannews.com.tw/en/news/4284163. live.
  46. Web site: September 11, 2021. Typhoon Chanthu spurs land warning - Taipei Times. September 11, 2021. www.taipeitimes.com. September 11, 2021. https://web.archive.org/web/20210911102429/https://www.taipeitimes.com/News/front/archives/2021/09/11/2003764171. live.
  47. September 9, 2021. September 10, 2021. Kiko. Chanthu. tcb. TY. 11. https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/TCB%2315_kiko.pdf.
  48. News: Agence-France-Presse. The Manila Bulletin. Taiwan cancels flights as weakened Typhoon Chanthu approaches. September 12, 2021. September 15, 2021. September 15, 2021. https://web.archive.org/web/20210915203538/https://mb.com.ph/2021/09/12/taiwan-cancels-flights-as-weakened-typhoon-chanthu-approaches/. live.
  49. News: Siqi. Ji. China's busiest container-shipping ports in Shanghai, Ningbo begin to reopen after Typhoon Chanthu. South China Morning Post. September 14, 2021. September 15, 2021. September 14, 2021. https://web.archive.org/web/20210914235632/https://www.scmp.com/economy/china-economy/article/3148727/chinas-busiest-container-shipping-ports-shanghai-ningbo-begin. live.
  50. News: September 12, 2021. Strong typhoon cuts power, causes flooding in northern Philippines. Reuters. Blaza. Peter. Wong. Jacqueline. September 13, 2021. September 12, 2021. https://web.archive.org/web/20210912222330/https://www.reuters.com/world/asia-pacific/strong-typhoon-cuts-power-causes-flooding-northern-philippines-2021-09-12/. live.
  51. Web site: Sitrep no.7 for Typhoon Kiko (2021). https://web.archive.org/web/20211127015937/https://monitoring-dashboard.ndrrmc.gov.ph/exports/reporting/situational-report-for-typhoon-kiko2021/national/513. dead. November 27, 2021. ndrrmc.gov.ph. National Disaster Risk Reduction and Management Council. September 17, 2021. September 17, 2021.
  52. News: Typhoon Chanthu drenches Taiwan but spares island a direct hit. Channel News Asia. September 12, 2021. September 15, 2021. September 15, 2021. https://web.archive.org/web/20210915195636/https://www.channelnewsasia.com/asia/typhoon-chanthu-drenches-taiwan-spares-island-direct-hit-2172246. live.
  53. News: September 12, 2021. Typhoon pours 5 inches of rain on Taiwan, heads for Shanghai. Associated Press. September 13, 2021. www.washingtonpost.com. September 13, 2021. https://web.archive.org/web/20210913092032/https://www.washingtonpost.com/world/typhoon-chanthu-drenches-taiwan-with-up-to-5-inches-of-rain/2021/09/12/1619fd26-137e-11ec-baca-86b144fc8a2d_story.html. live.
  54. Web site: Yonhap. September 17, 2021. Typhoon Chanthu passes near Jeju, flooding roads, homes, canceling flights. September 18, 2021. The Korea Herald. September 17, 2021. https://web.archive.org/web/20210917213500/http://www.koreaherald.com/view.php?ud=20210917000255. live.
  55. News: 7 hurt as Typhoon Chanthu traverses Japan, weakens. September 18, 2021. Kyodo News. September 20, 2021. September 19, 2021. https://web.archive.org/web/20210919073929/https://english.kyodonews.net/news/2021/09/bdb1cf3556d2-typhoon-traverses-west-japan-at-least-5-injured.html. live.

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