Typhoon Bavi

Typhoon Bavi, known in the Philippines as Severe Tropical Storm Igme, was a powerful tropical cyclone that made landfall in North Korea in August 2020. The eighth named storm and third typhoon of the 2020 Pacific typhoon season, Bavi formed from a low pressure area depression on August 21 to the north of the Philippines and strengthened into a tropical storm on August 22. Bavi gradually strengthened as it skirted Taiwan and Okinawa, and became a typhoon on August 24. Passing over warm waters, Bavi turned to northwest and reached its peak intensity near Jeju Island on August 26. Thereafter, increasing wind shear and cooler waters caused Bavi to quickly weaken. Bavi made landfall in North Korea on August 27, and became an extratropical cyclone shortly thereafter.

For other storms named Bavi, see Tropical Storm Bavi.
Typhoon Bavi (Igme)
Bavi at peak intensity near Jeju Island on August 26
Meteorological history
FormedAugust 20, 2020
ExtratropicalAugust 27, 2020
DissipatedAugust 30, 2020
Very strong typhoon
10-minute sustained (JMA)
Highest winds155 km/h (100 mph)
Lowest pressure950 hPa (mbar); 28.05 inHg
Category 3-equivalent typhoon
1-minute sustained (SSHWS/JTWC)
Highest winds185 km/h (115 mph)
Lowest pressure942 hPa (mbar); 27.82 inHg
Overall effects
Fatalities1 total
Damage$11.7 million (2020 USD)
Areas affectedPhilippines, Ryukyu Islands, Taiwan, Korean Peninsula, North China, Northeast China
IBTrACS
Part of the 2020 Pacific typhoon season

Bavi caused minimal damage in portions of South Korea and Japan, but caused widespread structural damage and flooding in North Korea. It was the first storm in two weeks span to affect Korea. Others were Maysak and Haishen.

Meteorological history
Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key
Saffir–Simpson scale
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
triangle Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

On August 19, the JTWC began monitoring a broad area of low pressure situated a couple hundred miles northeast of the Philippine archipelago. By the next day, the system rapidly organised, and the JTWC subsequently issued a Tropical Cyclone Formation Alert (TCFA), and on August 21, the area of low pressure organized into Tropical Depression 09W.[1] At 15:00 UTC, the PAGASA named the system "Igme" and issued a severe weather bulletin for it.[2] By the next day the system had intensified into a tropical storm, and the JMA gave it the name Bavi and upgraded it, with the JTWC doing the same.[3] Favorable conditions allowed Bavi to rapidly intensify, and by 12:00 UTC on August 22, the system became a severe tropical storm. The system left the Philippine Area of Responsibility on the same day.[4] Bavi's period of rapid intensification was brief, with its intensification significantly slowed on August 23.

On August 24, Bavi was upgraded into a typhoon by the JTWC as it continued to slowly intensify. Later on that day, it became a Category 2 typhoon, with it becoming a Category 3 typhoon on the next day. As Bavi moved closer to the Korean peninsula, one person died in Jeju Island on August 25.[5] Soon afterwards, as Bavi moved northwards into very hostile conditions and high wind shear, which caused Bavi to rapidly weaken. Wind shear was still high and the storm started extratropical transition. Around 00:30 UTC on August 27, a weakened Bavi made landfall over North Pyongan Province, North Korea as a minimal typhoon.[6] Both the JMA and the JTWC issued their final advisory on Bavi a few hours later as it became an extratropical cyclone over Northeastern China.

Preparations, impact, and aftermath

Japan

Bavi caused wind gusts of over 60 mph (97 km/h) and dropped 300 mm (12 in) of rain on the island of Okinawa.[7] Agricultural damage in Okinawa Prefecture was JP¥25.14 million (US$237 thousand).[8] Large waves associated with Bavi were reported as far away as Kagoshima Prefecture.[9]

South Korea

In South Korea, as a precaution over 470 flights were cancelled and railroad services were halted. Public parks were also closed for the typhoon.[10]

In Jeju Island, five people were swept away by strong waves, one of them died later.[11] Heavy rainfall was also reported in the island with a maximum amount of 399.5 mm (15.73 in) being reported near Mount Halla.[12] Despite a close pass to mainland South Korea, damage was minimal, consisting mostly of power outages, broken windows, and downed trees. Nevertheless, more than 100 reports of damage was submitted. The typhoon forced about 30 people in Gokseong, South Jeolla Province, to evacuate due to landslides. About 440 flights were cancelled at eleven airports across the country, while nearly 160 passenger ferries were grounded on 99 ferry routes.[13] Roughly 1,600 households in South Korea lost power.[14] Losses in Jeju reached ₩484 million (US$408 thousand).[15]

North Korea
Credits to the weathernerds. And to Nino Morakot, by uploading the file
Infrared animation of Typhoon Bavi making landfall in North Korea

North Korean leader Kim Jong-un held a high-level political conference where he voiced his concerns about Typhoon Bavi and the COVID-19 pandemic.[16] He ordered all levels of the Workers' Party to take steps to protect the country from the threat of the storm.[17]

Snapped utility poles and trees were reported near Bavi's landfall location, as well as flooded roads. A peak precipitation amount of 224 mm (8.8 in) was reported in Anju.[7] Several homes and public buildings were damaged in North and South Hwanghae provinces.[18]

In an unusual step, Korean Central Television remained on the air overnight on 27 August as the typhoon impacted the country, interrupting programs every 30 minutes with updates from the State Hydro-Meteorological Administration. It later broadcast images of storm damage, as well as field reports from correspondents in Pyongyang and Nampo—a major divergence from the strict format and content of all other KCTV news bulletins, where the activities of Kim Jong-un take precedence. No other coverage of the storm was included in KCTV bulletins until 28 August, when a story followed Kim as he inspected damage from the storm.[17][19]

China

Several weather alerts were issued for portions of China as Typhoon Bavi neared. The Chinese Ministry of Emergency Management stated that 20,000 firefighters had been deployed equipped with 329 rescue boats.

In Northeast China, rounds of heavy downpours brought up to 150 mm (5.9 in) of rainfall in some areas.[20] Damage in Dalian amounted to be CN¥76.54 million (US$11.1 million).[21]

See also

References
  1. Joint Typhoon Warning Center (2020-08-21). "Tropical Cyclone Formation Alert WTPN21". Joint Typhoon Warning Center (JTWC). Archived from the original on 2020-08-21. Retrieved 2020-08-21.
  2. Philippine Atmospheric, Geophysical and Astronomical Services Administration (2020-08-22). "Severe Weather Bulletin #1". PAGASA. Archived from the original on 2020-08-22. Retrieved 2020-08-22.{{cite web}}: CS1 maint: unfit URL (link)
  3. "Japan Meteorological Agency | Tropical Cyclone Information". Archived from the original on 2020-08-22. Retrieved September 9, 2020.
  4. Philippine Atmospheric, Geophysical and Astronomical Services Administration (2020-08-22). "SEVERE WEATHER BULLETIN #4-FINAL" (PDF). PAGASA. Archived from the original on 2020-08-23. Retrieved 2020-08-23.{{cite web}}: CS1 maint: unfit URL (link)
  5. "태풍 바비 잇단 피해..물놀이 10대 사망-하늘·바닷길 끊겨[태풍 바비 경로]". www.sisa-news.com (in Korean). Retrieved 2020-08-26.
  6. Wang Qian (27 August 2020). "中央气象台8月27日8时30分发布台风登陆信息" (in Chinese). Beijing, China: National Meteorological Center of CMA. Archived from the original on 27 August 2020. Retrieved 27 August 2020.
  7. https://www.accuweather.com/en/hurricane/bavi-lashes-korean-peninsula-moves-into-china/799752
  8. 台風8号の農林漁業被害2514万円 9割がサトウキビ (in Japanese). Ryukyu Shimpo. August 27, 2020. Retrieved September 9, 2020.
  9. "Typhoon Bavi batters Japan with strong waves". news.yahoo.com. Retrieved September 9, 2020.
  10. "Typhoon damages buildings, floods roads on Korean Peninsula". ABC News. Retrieved September 9, 2020.
  11. "Jeju coming under direct influence of year's most powerful typhoon". The Korea Herald. August 25, 2020. Retrieved September 9, 2020.
  12. "Typhoon Bavi uproots trees, will graze Seoul tonight". koreajoongangdaily.joins.com. August 26, 2020. Retrieved September 9, 2020.
  13. "Typhoon Bavi Causes Evacuations, Power Outage in Southern Region".
  14. "Typhoon Bavi Leaves Behind Minor Damage In S. Korea". m.tbs.seoul.kr. Retrieved September 9, 2020.
  15. 김정은 (September 8, 2020). 태풍 ‘바비’ 피해액 약 5억원 집계 (in Korean). 제주일보. Retrieved September 9, 2020.
  16. "N. Korean leader calls for readiness against virus, typhoon". AP NEWS. August 26, 2020. Retrieved September 9, 2020.
  17. "We Interrupt this Propaganda…A Dynamic 24 Hours on North Korean TV | 38 North: Informed Analysis of North Korea". 38 North. 2020-08-28. Retrieved 2020-08-29.
  18. "Typhoon damages buildings, floods roads on Korean Peninsula". Hindustan Times. August 27, 2020. Retrieved September 9, 2020.
  19. "North Korea reports real-time typhoon damage in rare overnight broadcasts | NK News". NK News - North Korea News. August 27, 2020. Retrieved September 9, 2020.
  20. "Typhoon Bavi: China renews red alert » National Chronicle". August 27, 2020. Retrieved September 9, 2020.
  21. 【大连发布】8月这俩地降水量历史排名第一 (in Chinese). 大连天健网. September 29, 2020. Retrieved September 30, 2020.

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