Typhoon Chaba (2016) Explained

Typhoon Chaba (Igme)
Formed:September 24, 2016
Dissipated:October 7, 2016
Winds:115
Pressure:905
Winds:150
Pressure:911
Basin:wpac
Fatalities:10 total
Damages:129000000
Areas:Mariana Islands, South Korea, Japan, Russian Far East
Season:2016 Pacific typhoon season

Typhoon Chaba, known in the Philippines as Super Typhoon Igme, was the fourth most intense tropical cyclone in 2016 and the strongest tropical cyclone to make landfall in South Korea since Sanba in 2012. Chaba also caused 7 deaths in the country.[1] Typhoon Chaba was the eighteenth named storm and the eighth typhoon of the 2016 Pacific typhoon season. Chaba originated as a depression around the east-northeast of Guam. Being in a marginally favorable environment, JMA proceeds to name the system as Chaba. On September 28, JTWC gave its identifier as Tropical Depression 21W. Its LLCC starts to improve, prompting the JTWC to upgrade into a tropical storm. Chaba entered the Philippine Area of Responsibility, receiving the name Igme as it moved northwestwards. Chaba became more symmetrical which later ensued its rapid intensification.

Chaba later reached the peak intensity of 1-minute sustained winds of 280 km/h (175 mph) and a central pressure of 911 hPa (26.90 inHg), equivalent to a Category-5 super typhoon. Shortly after this, Chaba began to weaken into a Category-4 typhoon as it moved over the Yellow Sea on October 4. At 10:00 a.m. KST (01:00 UTC), Chaba made landfall in Busan as a weakening Category-1 typhoon. Shortly after landfall, it transitioned into an extratropical cyclone which prompted the JMA to issue its final advisory.

Meteorological history

On September 26, a tropical depression developed approximately 1445km (898miles) east-northeast of Guam.[2] Despite a marginally favorable environment, the Japan Meteorological Agency (JMA) upgraded the system to a tropical storm and assigned it the name Chaba late the next day.[3] Early on September 28, the Joint Typhoon Warning Center (JTWC) gave the identifier of 21W.[4] Flaring convection and improved overall convective structure prompted the JTWC to upgrade it to a tropical storm.[5] By September 30, Chaba had intensified into a severe tropical storm after deep convection had evolved into a banding feature and very favorable conditions such as very low wind shear and sea surface temperatures (SSTs) of about 30 degrees Celsius.[6] [7] On October 1, Chaba entered the Philippine area of responsibility, with PAGASA assigning the local name Igme, as it started to move in a northwestward direction.[8] Several hours later, both agencies upgraded Chaba to a typhoon after its organization and structure had vastly improved.[9] [10] During the next day, Chaba became more symmetric as feeder bands wrapped into its deep central convection, signalling the onset of explosive intensification.[11]

Continuing its strengthening trend, Chaba reached Category 5 super typhoon intensity with a sharp 5nmi wide eye surrounded by a very intense convective core due to very warm SSTs.[12] On October 3, Chaba reached its peak intensity with 10-minute sustained winds of 215abbr=onNaNabbr=on, 1-minute sustained winds of 280abbr=onNaNabbr=on, and a minimum central pressure of 905 mbar.[13] Thereafter, the JTWC stated that Chaba began weakening, as its core became asymmetric,[14] and Chaba weakened to a strong Category 4 typhoon by October 4.[15] Later, significant weakening led the JTWC to downgrade Chaba further to a Category 2 typhoon, due to interaction with strong north-northeasterly winds.[16] At 10:00 a.m. KST (01:00 UTC), Chaba struck Geojedo and then made landfall in Busan an hour later with winds of 120km/h.[17] At that time, Chaba started to undergo extratropical transition and the JTWC issued its final advisory a few hours later, while downgrading the system to a tropical storm.[18] [19] At the same time, the JMA downgraded Chaba to a severe tropical storm.[20] Six hours later, the JMA issued its final advisory, as Chaba became extratropical.[21]

Preparations and impact

EVA Air and China Airlines canceled flights to Okinawa that had been scheduled for 3 October, which was the day the typhoon was forecast to impact Okinawa. EVA Air had previously been criticized for operating flights to destinations affected by typhoons a week earlier, when Typhoon Megi was affecting the region.[22]

The storm left widespread damage across the southern regions of South Korea, killing at least 7 and leaving 3 missing. Transportation was disrupted, with hundreds of flights canceled, while more than 220,000 households lost electricity. Chaba was the strongest typhoon to strike the country since Sanba in 2012,[23] and was the strongest October typhoon to hit Korea, establishing a new record for rainfall rate on Jeju Island.[24] Flooding was also reported in the southern South Korea cities of Ulsan, Gyeongju, and Busan.[25] Damages were reported at  billion (US$129 million).[26] [27]

See also

External links

Notes and References

  1. News: Typhoon Chaba leaves 7 dead, 3 missing in southern S. Korea . . 6 October 2016 . Yonhap News . 7 October 2016.
  2. Web site: Tropical Disturbance Summary . https://archive.today/20240523031831/https://www.webcitation.org/6koCpmFB0?url=http://gwydir.demon.co.uk/advisories/ABPW10-PGTW_201609260600.htm . dead . 2024-05-23 . 27 September 2016 . Joint Typhoon Warning Center .
  3. Web site: TS 1618 CHABA (1618) UPGRADED FROM TD. https://archive.today/20240523031952/https://www.webcitation.org/6krQXD5M6?url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201609271800.htm. dead. 2024-05-23. September 27, 2016. Japan Meteorological Agency.
  4. Web site: Tropical Depression 21W (Chaba) Warning Nr 001. https://archive.today/20240523031912/https://www.webcitation.org/6krQuSSEN?url=http://gwydir.demon.co.uk/advisories/WTPN32-PGTW_201609280300.htm. dead. 2024-05-23. September 28, 2016. Joint Typhoon Warning Center.
  5. Web site: Prognostic Reasoning for Tropical Storm 21W (Chaba) Warning Nr 06. https://archive.today/20240523032152/https://www.webcitation.org/6kuUVYolK?url=http://gwydir.demon.co.uk/advisories/WDPN32-PGTW_201609290900.htm. dead. 2024-05-23. September 29, 2016. Joint Typhoon Warning Center.
  6. Web site: Prognostic Reasoning for Tropical Storm 21W (Chaba) Warning Nr 08. https://archive.today/20240523032111/https://www.webcitation.org/6kuUUmoA7?url=http://gwydir.demon.co.uk/advisories/WDPN32-PGTW_201609292100.htm. dead. 2024-05-23. September 29, 2016. Joint Typhoon Warning Center.
  7. Web site: STS 1618 CHABA (1618) UPGRADED FROM TS. https://archive.today/20240523032031/https://www.webcitation.org/6kuU9zNw4?url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201609300000.htm. dead. 2024-05-23. September 30, 2016. Japan Meteorological Agency.
  8. Web site: Severe Weather Bulletin #1: Severe Tropical Storm "IGME" (CHABA). https://archive.today/20161018010944/http://pagasa.dost.gov.ph/index.php/tropical-cyclones/weather-bulletins/250-tropical-cyclones/severe-weather-bulletin/igme-2016-bulletin/2606-igme-2016-1. dead. 2016-10-18. October 1, 2016. webcitation.org. PAGASA.
  9. Web site: TY 1618 CHABA (1618) UPGRADED FROM STS. https://archive.today/20240523032233/https://www.webcitation.org/6kw1Mxs3r?url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201610011200.htm. dead. 2024-05-23. October 1, 2016. Japan Meteorological Agency.
  10. Web site: Prognostic Reasoning for Typhoon 21W (Chaba) Warning Nr 15. https://archive.today/20240523032352/https://www.webcitation.org/6kxTvOTkb?url=http://gwydir.demon.co.uk/advisories/WDPN32-PGTW_201610011500.htm. dead. 2024-05-23. October 1, 2016. Joint Typhoon Warning Center.
  11. Web site: Prognostic Reasoning for Typhoon 21W (Chaba) Warning Nr 17. https://archive.today/20240523032314/https://www.webcitation.org/6kxTucdTK?url=http://gwydir.demon.co.uk/advisories/WDPN32-PGTW_201610020300.htm. dead. 2024-05-23. October 2, 2016. Joint Typhoon Warning Center.
  12. Web site: Prognostic Reasoning for Super Typhoon 21W (Chaba) Warning Nr 22. https://archive.today/20240523032553/https://www.webcitation.org/6kzS2wW95?url=http://gwydir.demon.co.uk/advisories/WDPN32-PGTW_201610030900.htm. dead. 2024-05-23. October 3, 2016. Joint Typhoon Warning Center.
  13. Web site: TY 1618 CHABA (1618). https://archive.today/20240523032434/https://www.webcitation.org/6kzRk2REs?url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201610031200.htm. dead. 2024-05-23. October 3, 2016. Japan Meteorological Agency.
  14. Web site: Prognostic Reasoning for Typhoon 21W (Chaba) Warning Nr 23. https://archive.today/20240523032513/https://www.webcitation.org/6kzS2aULa?url=http://gwydir.demon.co.uk/advisories/WDPN32-PGTW_201610031500.htm. dead. 2024-05-23. October 3, 2016. Joint Typhoon Warning Center.
  15. Web site: Prognostic Reasoning for Typhoon 21W (Chaba) Warning Nr 25. https://archive.today/20240523032636/https://www.webcitation.org/6l0l2pOcr?url=http://gwydir.demon.co.uk/advisories/WDPN32-PGTW_201610040300.htm. dead. 2024-05-23. Joint Typhoon Warning Center.
  16. Web site: Prognostic Reasoning for Typhoon 21W (Chaba) Warning Nr 28. https://archive.today/20240523032839/https://www.webcitation.org/6l2Jn7Nh5?url=http://gwydir.demon.co.uk/advisories/WDPN32-PGTW_201610042100.htm. dead. 2024-05-23. October 4, 2016. Joint Typhoon Warning Center.
  17. 제18호 태풍 차바(CHABA)의 특징. Korean. Korea Meteorological Administration. October 5, 2016. October 6, 2016.
  18. Web site: Prognostic Reasoning for Typhoon 21W (Chaba) Warning Nr 29. https://archive.today/20240523032755/https://www.webcitation.org/6l2JmcnuW?url=http://gwydir.demon.co.uk/advisories/WDPN32-PGTW_201610050300.htm. dead. 2024-05-23. October 5, 2016. Joint Typhoon Warning Center.
  19. Web site: Tropical Storm 21W (Chaba) Warning Nr 030. https://archive.today/20240523032717/https://www.webcitation.org/6l2Ji6OKU?url=http://gwydir.demon.co.uk/advisories/WTPN32-PGTW_201610050900.htm. dead. 2024-05-23. October 5, 2016. Joint Typhoon Warning Center.
  20. Web site: STS 1618 CHABA (1618) DOWNGRADED FROM TY. https://archive.today/20240523032957/https://www.webcitation.org/6l2JXbrgj?url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201610050600.htm. dead. 2024-05-23. October 5, 2016. Japan Meteorological Agency.
  21. Web site: DEVELOPED LOW STS 1618 CHABA (1618). https://archive.today/20240523032916/https://www.webcitation.org/6l2JWopfK?url=http://gwydir.demon.co.uk/advisories/WTPQ21-RJTD_201610051200.htm. dead. 2024-05-23. October 5, 2016. Japan Meteorological Agency.
  22. News: Taiwan cancels Monday flights to Okinawa due to Typhoone Chaba (update) . 2 October 2016 . Wang, Shu-fen . Kao, Evelyn . Focus Taiwan News Channel . 7 October 2016.
  23. News: Typhoon Chaba leaves seven dead, three missing in S. Korea. October 7, 2016. Malay Mail.
  24. News: Typhoon Chaba Sets New Records . Hong, Jun-ki . 6 October 2016 . The Chosun Ilbo . 7 October 2016.
  25. News: Typhoone Chaba batters South Korea leaving hundreds homeless and seven dead . Wheeler, Alex . 7 October 2016 . International Business Times . 7 October 2016.
  26. News: 태풍 '차바' 손보사 손해액 1400억 넘어 . Yoon Hee-hee . 11 October 2016 . The Hankyoreh . 12 October 2016.
  27. Web site: Global Catastrophe Recap October 2016. thoughtleadership.aonbenfield.com. Aon Benfield. November 9, 2017.

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