Tropical Storm Yun-yeung
Meteorological history | |
---|---|
Formed | September 4, 2023 |
Extratropical | September 8, 2023 |
Dissipated | September 9, 2023 |
Tropical storm | |
10-minute sustained (JMA) | |
Highest winds | 75 km/h (45 mph) |
Lowest pressure | 998 hPa (mbar); 29.47 inHg |
Tropical storm | |
1-minute sustained (SSHWS/JTWC) | |
Highest winds | 85 km/h (50 mph) |
Lowest pressure | 993 hPa (mbar); 29.32 inHg |
Overall effects | |
Fatalities | 3 |
Damage | >$10 million |
Areas affected | Philippines, Japan |
IBTrACS | |
Part of the 2023 Pacific typhoon season |
Tropical Storm Yun-yeung, known in the Philippines as Tropical Storm Ineng was a weak tropical storm which affected Japan in early September 2023. The twentieth tropical depression and thirteenth tropical storm of the 2023 Pacific typhoon season, Yun-yeung originated in the Philippine Sea in early September. After exiting the Philippine Area of Responsibility on September 5, it developed into a depression the next day. On September 7, Yun-yeung would peak as a minimal tropical storm before making landfall in Southern Japan. It rapidly weakened once inland, and by September 9, had degenerated into a remnant low.
Despite being weak when affecting the Philippines and Japan, Yun-yeung still produced historical amounts of rainfall in Japan, causing floods and landslides to occur in Southern Japan. A total of three fatalities would be recorded, all in Chiba Prefecture. Total losses are greater than ten million according to Aon.
Meteorological history[edit]
On 6:00 UTC on September 4, the Joint Typhoon Warning Center (JTWC) began tracking a low-pressure area far east of Luzon.[1] As the disturbance was in a favorable environment with low vertical wind shear and warm SSTs of 29–30 °C (84–86 °F), the JTWC issued a Tropical Cyclone Formation Alert (TCFA) on the system a day later.[2] Soon after, the Japan Meteorological Agency (JMA) began tracking the low-pressure area.[3] At the time, the disturbance was located in the Philippine Area of Responsibility (PAR), causing the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) to designate the system as a tropical depression, naming it Ineng.[4]
On 18:00 UTC on September 5, both the JTWC and JMA recognized the system as a tropical cyclone, with the latter agency naming it Yun-yeung as according to them, it had gale-force winds at the time.[1][3] The next day, the JTWC upgraded Yun-yeung into a tropical storm.[1] Later that day, the depression exited the PAR, causing PAGASA to cease advisories on the system.[4] Yun-yeung steadily intensified, and early on September 7, had peaked with 10-minute sustained winds of 45 mph (70 km/h) according to the JMA.[3]
Due to a binary interaction with the remnants of Kirogi, Yun-yeung began to slow down, crossing into an environment with wind shear in excess of 45 mph (70 km/h). Despite that, conditions were still favorable for the system to intensify.[5] As a result, later that day, it peaked with 1-minute sustained winds of 50 mph (80 km/h) according to the JTWC.[1] It began tracking westward instead of north-westward, rapidly weakening due to the increasing shear.[6] On September 8, Yun-yeung made landfall near as a weak tropical depression along the northern shoreline of Suruga Bay, degenerating into a wave-like feature.[7] Yun-yeung rapidly weakened once inland, and by September 9, had degenerated into a remnant low, causing both agencies to stop monitoring it.[1][3]
Preparations and impact[edit]
Philippines[edit]
When Yun-yeung was initially developing far from the Philippines, it with Haikui primarily enhanced the southwest monsoon, causing heavy rains in portions of Luzon.[8] PAGASA would issue a gale warning for the seaboards of portions of Northern Luzon due to the system.[4] Yun-yeung itself would cause scattered showers in Batanes, Abra, Apayao, Cagayan and Isabela.[9]
Japan[edit]
In the Chiba and Ibaraki prefectures, record rainfall would occur, with 371.5 mm (14.63 in) recorded in Mobara and 249.5 mm (9.82 in) in Kamogawa. Additionally, rides in the Tokaido Line, Uchibo Line and Gaibo Line were temporarily suspended.[10] Osaka recorded 323 mm (12.7 in) of rainfall. Due to the storm, nearly 10,000 households had temporarily lost power in Japan. Around32 flights would be cancelled due to the storm.[11] In Shinjuku Station, water leaked in an underground passage and flooded around 15 meters of walkway.[12] A total of three people died due to the storm.[13] Some train lines were impacted in the Kanto region, since JR East suspended some lines and limited express trains.[14] Economic losses from the storm were in the tens of millions according to Aon.[15]
References[edit]
- ^ a b c d e "Tropical Storm 12W (Yun-yeung) Best Track Data". National Oceanic and Atmospheric Administration. Retrieved 3 June 2024.
- ^ Tropical Cyclone Formation Alert (Invest 99W) (Report). United States Joint Typhoon Warning Center. 5 September 2023. Retrieved 5 September 2023.
- ^ a b c d "YUN-YEUNG (2313) TROPICAL CYCLONE BEST TRACK". Japan Meteorological Agency. Archived from the original on 30 November 2023.
- ^ a b c "PAGASA Tropical Cyclone Bulletins for Tropical Cyclone Ineng, 23-TC09". PAGASA. September 2023. Retrieved 2024-06-05.
- ^ Prognostic Reasoning for Tropical Storm 12W (Yun-yeung) Warning No. 8 (Report). United States Joint Typhoon Warning Center. 7 September 2023. Retrieved 7 September 2023.
- ^ Prognostic Reasoning for Tropical Storm 12W (Yun-yeung) Warning No. 12 (Report). United States Joint Typhoon Warning Center. 8 September 2023. Retrieved 8 September 2023.
- ^ Tropical Depression 12W (Yun-yeung) Warning No. 14 (Report). United States Joint Typhoon Warning Center. 8 September 2023. Retrieved 8 September 2023.
- ^ "'Ineng' exits PAR, but continues to influence 'habagat'". philstar.com. Philstar Global. 2023-09-06. Retrieved 6 June 2024.
- ^ "Ineng exits PAR but 'habagat' to bring rains in next 3 days". Philippine News Agency. September 6, 2023.
- ^ "Typhoon Yun-yeung weakens into tropical depression". Kyodo News+. 2023-09-08. Retrieved 2024-06-03.
- ^ EFE, Agencia (2023-09-08). "Tropical storm causes heavy rain, flooding in eastern Japan". EFE Noticias. Retrieved 2024-06-03.
- ^ "Tropical storm Yun-yeung approaching central Japan | NHK WORLD-JAPAN News". NHK WORLD. Retrieved 2024-06-03.
- ^ "Japan - Tropical Cyclone YUN-YEUNG, update (media, JMA, GDACS) (ECHO Daily Flash of 11 September 2023) - Japan | ReliefWeb". reliefweb.int. 2023-09-11. Retrieved 2024-06-03.
- ^ "Tropical Storm Yun-yeung brings heavy rain to Kanto region". September 8, 2023. Retrieved September 8, 2023.
- ^ Čejka, Tomáš; Elizondo, Antonio; Hotový, Ondřej; Lörinc, Michal (June 16, 2024). "2024 Climate and Catastrophe Insight" (PDF). assets.aon.com. Retrieved June 16, 2024.