Jump to content

Typhoon Danas (2025)

From Wikipedia, the free encyclopedia
For other storms of the same name, see List of storms named Danas and List of storms named Bising.

Typhoon Danas (Bising)
Danas approaching Taiwan at near peak intensity early on 6 July
Meteorological history
Formed3 July 2025
Dissipated11 July 2025
Typhoon
10-minute sustained (JMA)
Highest winds120 km/h (75 mph)
Lowest pressure970 hPa (mbar); 28.64 inHg
Category 3-equivalent typhoon
1-minute sustained (SSHWS/JTWC)
Highest winds185 km/h (115 mph)
Lowest pressure950 hPa (mbar); 28.05 inHg
Overall effects
Fatalities4
Injuries727
Damage>$111 million (2025 USD)
Areas affectedPhilippines, Taiwan, South China, East China, Hong Kong, Macau, Japan (Okinawa)
IBTrACSEdit this at Wikidata
Part of the 2025 Pacific typhoon season

Typhoon Danas, known in the Philippines as Typhoon Bising, was a fairly strong yet erratic tropical cyclone which impacted the Philippines, Taiwan and East China during early July 2025. The fourth named storm and first typhoon of the annual typhoon season, Danas formed due to the rapid consolidation of convective activity associated with a disturbance located about 550 km (340 mi) eastsoutheast of Hong Kong on 4 July. As a result, the Joint Typhoon Warning Center (JTWC) designated the system as tropical depression 05W, while the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) named it Bising. Later that day, the JTWC upgraded the system to a tropical storm as it began developing a central dense overcast, while the Japan Meteorological Agency (JMA) later named the system Danas. On 5 July, the JMA later upgraded the storm into a severe tropical storm as it continued to intensify over favourable conditions. JMA eventually upgraded it into a typhoon just hours before making landfall at peak intensity in Chiayi County, Taiwan on 6 July (TST), becoming the first typhoon to strike Taiwan's central‌‌ western coast since Typhoon Wayne, the first storm on record to have its landfall in Chiayi County as a typhoon, and the second consecutive season to have a typhoon striking Taiwan's western plains since Typhoon Krathon in 2024.

Meteorological history

[edit]
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

The origins of Typhoon Danas can be traced back to 30 June, when the Joint Typhoon Warning Center (JTWC)[nb 1] reported an area of atmospheric convection located 300 km (180 mi) eastsoutheast of Aparri, Philippines, noting that the system was in a favourable environment due to limited upper-level outflow, with an upper-level anticyclone positioned just west of the low-level circulation.[2]

At 04:02 UTC on 3 July, the Hong Kong Observatory (HKO) said an area of low pressure to the north of Luzon would develop into a tropical cyclone "gradually in the next couple of days".[3] At 05:00 UTC, the Meteorological and Geophysical Bureau (SMG) of Macau likewise said that a low pressure area north of Luzon could develop and travel through the South China Sea.[4]

By 12:00 UTC on the day, the Japan Meteorological Agency (JMA)[nb 2] reported that the system had developed into a low-pressure area, with satellite imagery showing an exposed low-level circulation and persistent convection sheared over its southwest quadrant.[5][6] At 18:00 UTC that day, the JMA reported that the system had formed into a tropical depression.[7] Hours later, the JTWC issued a tropical cyclone formation alert due to a rapidly organising system with deep convection,[8] and subsequently upgraded it to a tropical depression, assigning it the designation 04W.[9]

Early on 4 July, convective activity associated with the disturbance, which had now moved 550 kilometres (340 mi) eastsoutheast of Hong Kong rapidly consolidated. The JTWC later designated the system as tropical depression 05W, with the PAGASA naming it Bising shortly after.[10][11] Later that day, the JTWC upgraded the depression to a tropical storm as it began developing a central dense overcast,[12] with the JMA accordingly naming the system Danas.[13] On 5 July at 18:00 UTC, the JMA upgraded Danas into a severe tropical storm, and on the next day at 12:50 UTC into a typhoon, as it intensified further and tracked northeastwards.

Danas made landfall at peak intensity near Budai, Chiayi County, Taiwan at 23:40 TST (15:40 UTC) on 6 July, making it the first typhoon to make landfall on the central‌ western coast of the island since Typhoon Wayne in 1986.[14] It is also the first storm on record to have its landfall in Chiayi County at the strength of a typhoon.[15]

As it moved back westwards across the Taiwan Strait, Danas made two landfalls along the coast of China's Zhejiang Province on 8 June, the first at Dongtou District, Wenzhou at 21:25 CST and at Rui'an at 23:45 CST;[16] and continued to move westsouthwestwards inland and dissipating the next day. The Hong Kong Observatory reported the strength of Danas to be 40 kilometres per hour (22 kn) at 15:00 UTC on 9 July 2025 and classified it a low pressure area.[17]

On 9 July, an ATCF override confirmed that JTWC upped the peak of Danas to one-minute sustained winds of 100 knots or 115 mph (185 km/h) and a pressure of 950 mb.

Preparations

[edit]

Philippines

[edit]

Shortly after Danas formed, the PAGASA raised Tropical Cyclone Wind Signal No. 1 over parts of Northern Luzon[18] before lifting it as the system left the Philippine Area of Responsibility (PAR) later in the day.[19] As Danas recurved towards the PAR, the PAGASA raised Signal No. 1 over Batanes on 6 July.[20]

Taiwan

[edit]

Taiwan's Central Weather Administration (CWA) issued a warning at 14:30 TST on 6 July for winds surpassing 160 km/h (99 mph), as Danas was forecast to make landfall on the island later that day.[21] They also issued rainfall warnings for the entirety of the island of Taiwan and the Pescadores, with the heaviest rain expected in Pingtung (≥500 mm (20 in)) and Taitung counties as well as Kaohsiung (350–499 mm (13.8–19.6 in)).[22] The Agriculture and Food Agency reported that due to consumer expectations of supply disruption and shortages, the retail prices of common vegetables increased by 100%.[23] The Republic of China Army raised its emergency response level and put troops and equipment on standby across areas likely to be affected, with liaison and intelligence officers deployed to local governments.[24]

China

[edit]

In China, the China Meteorological Administration renewed a yellow alert as Danas was forecast to bring strong winds and heavy rain to the southern areas of the country. The typhoon was expected to enter the East China Sea on 7 July and gradually approach coastal areas from northern Fujian to central and southern Zhejiang.[21] At least 193 passenger ferries along Fujian's coast and all 104 water construction projects in the province were suspended.[21]

Elsewhere

[edit]

The Hong Kong Observatory issued but later cancelled a Standby Signal No.1 warning as the typhoon moved away from the territory and further into the Taiwan Strait;[21][25][26] the same signal was issued and also later cancelled in neighbouring Macau by the territory's SMG.[27][28][29] The Thai Meteorological Department said that Danas could exacerbate monsoon rains in Thailand.[30]

On 9 July at noon local time, the Hong Kong Observatory warned that Danas and its remnants would bring torrential rain, squally thunderstorms and relatively strong southwest monsoon on 10 and 11 July.[31] The amber and the red rainstorm signals were issued successively in the late evening on 9 July.[32][33][34][35] The warning signals were again issued successively in the morning on 10 July.[36][37] Classes were suspended on 10 July afternoon[38] and into 11 July.[39][40]

Impact

[edit]

Philippines

[edit]

Heavy rains from Danas and the southwest monsoon affected 13,006 people across 14 barangays in the Philippines, destroying one house and damaging 12 others, according to the National Disaster Risk Reduction and Management Council (NDRRMC). Twenty-three areas of Central Luzon reported flooding. At least 219 cities and municipalities suspended classes, while 36 suspended work.[41] A child died in Las Piñas after being swept away by floodwaters.[42]

Taiwan

[edit]
Accumulated rainfall in Taiwan from Typhoon Danas.

In Taiwan, up to 457 mm (18.0 in) of rainfall was recorded in Mudan, Pingtung County by 03:30 TST on 7 July. The Gangkou River and several village dykes overflowed in the county, triggering landslides and flooding roads, farmland and a bridge.[43] Two people were killed in Tainan, 726 others were injured and 9,391 incidents were reported in the city and neighbouring Chiayi County and Chiayi City, with 880,000 households across Taiwan losing power.[44]

In the North District of Tainan, strong winds damaged one building.[45] Chiayi County, Chiayi City, Tainan, Kaohsiung, Pingtung and Penghu stopped all the classes and work from 6 July to 7 July because of the typhoon. Taichung, Changhua, Nantou and Yunlin also stopped the classes and work from 18:00 TST on 6 July to 7 July. Hsinchu County, Hsinchu City, Miaoli and the four coastal districts of Taoyuan (Luzhu, Dayuan, Xinwu, Guanyin) stopped classes and work on 7 July.[46][47] As of 18 July, the loss of agricultural products and private facilities was calculated to be NT$3.26 billion (US$111 million).[48]

Elsewhere

[edit]

Two people were temporarily trapped on a gondola lift on the façade of Kimpton Hong Kong hotel in the Tsim Sha Tsui area of Kowloon in Hong Kong amidst strong gusts.[49][50][51] Danas brought extreme heat to the territory, with the very hot weather warning and the amber heat stress warning in place for several days.[52][53][54] A similar warning was declared in neighbouring Macau.[55][56] Flooding was recorded in northern New Territories in the late evening on 9 July, with a section of a major expressway closed to traffic as a result.[57] Gusts tore down bamboo scaffolding in Kowloon.[58] A construction worker was killed on the artificial island to the northeast of Chek Lap Kok, while another worker was injured.[59][60][61][62]

See also

[edit]

Other similar typhoons:

Notes

[edit]
  1. ^ The Joint Typhoon Warning Center is a joint United States Navy – United States Air Force task force that issues tropical cyclone warnings for the western Pacific Ocean and other regions.[1]
  2. ^ The Japan Meteorological Agency is the official Regional Specialized Meteorological Centre (RSMC) for the western Pacific Ocean.

References

[edit]
  1. ^ "Joint Typhoon Warning Center Mission Statement". Joint Typhoon Warning Center. 2011. Archived from the original on 26 July 2007. Retrieved 25 July 2012.
  2. ^ Significant Tropical Weather Advisory for the Western and South Pacific Oceans, 0130Z 30 June 2025 Reissued (Report). United States Joint Typhoon Warning Center. 30 June 2025. Retrieved 30 June 2025.
  3. ^ "Press Weather No. 098 - Hourly Readings".
  4. ^ "氣象局料呂宋附近低壓區進一步發展". Teledifusão de Macau (in Chinese). 3 July 2025. Retrieved 6 July 2025.
  5. ^ Warning and Summary 031200 (Report). Tokyo, Japan: Japan Meteorological Agency. 3 July 2025. Archived from the original on 4 July 2025. Retrieved 4 July 2025.
  6. ^ Significant Tropical Weather Advisory for the Western and South Pacific Oceans, 0130Z 3 July 2025 Reissued (Report). United States Joint Typhoon Warning Center. 3 July 2025. Retrieved 3 July 2025.
  7. ^ Warning and Summary 031800 (Report). Tokyo, Japan: Japan Meteorological Agency. 3 July 2025. Archived from the original on 4 July 2025. Retrieved 4 July 2025.
  8. ^ Tropical Cyclone Formation Alert (Invest 98W) (Report). United States Joint Typhoon Warning Center. 3 July 2025. Retrieved 3 July 2025.
  9. ^ Prognostic Reasoning for Tropical Depression 05W (Five) Warning No. 1 (Report). United States Joint Typhoon Warning Center. 4 July 2025. Retrieved 10 June 2025.
  10. ^ Prognostic Reasoning for Tropical Storm 05W (Five) Warning No. 1 (Report). United States Joint Typhoon Warning Center. 3 July 2025. Retrieved 6 July 2025.
  11. ^ "LPA off Babuyan Islands now Tropical Depression Bising". GMA News Online. 4 July 2025. Retrieved 4 July 2025.
  12. ^ Prognostic Reasoning for Tropical Storm 05W (Five) Warning No. 7 (Report). United States Joint Typhoon Warning Center. 4 July 2025. Retrieved 6 July 2025.
  13. ^ Warning and Summary 041800 (Report). Tokyo, Japan: Japan Meteorological Agency. 4 July 2025. Retrieved 6 July 2025.
  14. ^ "颱風丹娜絲6日深夜 登陸嘉義布袋" (in Chinese). Central News Agency. 6 July 2025. Retrieved 6 July 2025.
  15. ^ "中颱丹娜絲嘉義登陸「有記錄以來首次」！走到台中了暴風圈籠罩全台灣". 三立新聞網SETN.com.
  16. ^ "Typhoon Danas makes third landfall in east China". Xinhua. 9 July 2025. Retrieved 9 July 2025.
  17. ^ https://archive.today/20250710064143/https://www.hko.gov.hk/textonly/v2/tc/tcp.htm https://www.hko.gov.hk/textonly/v2/tc/tcp.htm
  18. ^ "TD Bising slightly intensifies, 3 areas under Signal No. 1". GMA News Online. 4 July 2025. Retrieved 4 July 2025.
  19. ^ "Wind signals lifted as 'Bising' leaves PAR". The Philippine Star. 4 July 2025. Retrieved 4 July 2025.
  20. ^ "'Bising' heads back to PAR; wind signal no. 1 up in Batanes again". ABS-CBN. 6 July 2025. Retrieved 6 July 2025.
  21. ^ a b c d "Taiwan Issues Sea, Land Typhoon Warning As Danas Approaches". NDTV. 6 July 2025. Retrieved 6 July 2025.
  22. ^ "丹娜絲增胖變中颱！ 全台20縣市豪大雨特報". CTWANT. 6 July 2025. Retrieved 6 July 2025.
  23. ^ "Taiwan vegetable prices rise due to Typhoon Danas". Taiwan News. 5 July 2025. Retrieved 6 July 2025.
  24. ^ "Taiwan's Army on alert as Typhoon Danas nears". Central News Agency. 5 July 2025. Retrieved 6 July 2025.
  25. ^ "Press Weather No. 088 - Issue/Cancelling Tc Signals (Urgent)".
  26. ^ "Press Weather No. 144 - Issue/Cancelling Tc Signals (Urgent)".
  27. ^ "Ciclone Tropical Severo Danas mais perto mas sinal 3 tem baixa probabilidade". Teledifusão de Macau.
  28. ^ "Com o sinal 1 de tempestade tropical hasteado, a previsão dos Serviços Meteorológicos e Geofísicos é que o ciclone tropical severo Danas atinja, este domingo, o ponto máximo de aproximação a Macau, a cerca de 450 quilómetros. É por isso baixa a probabilidade de o sinal 3 vir a ser içado". Teledifusão de Macau.
  29. ^ "Sinal 1 foi cancelado | TDM". Teledifusão de Macau.
  30. ^ "Danas Update: No Direct Threat to Thailand, But Stronger Monsoon Predicted". The Nation. 6 July 2025. Retrieved 6 July 2025.
  31. ^ "Special weather tips". Hong Kong Observatory. Archived from the original on 9 July 2025. Retrieved 9 July 2025.
  32. ^ https://news.rthk.hk/rthk/en/component/k2/1812652-20250709.htm
  33. ^ https://www.info.gov.hk/gia/wr/202507/09/P2025070901071.htm
  34. ^ https://news.rthk.hk/rthk/en/component/k2/1812664-20250710.htm
  35. ^ https://www.info.gov.hk/gia/wr/202507/09/P2025070901090.htm
  36. ^ https://news.rthk.hk/rthk/en/component/k2/1812703-20250710.htm
  37. ^ https://news.rthk.hk/rthk/en/component/k2/1812754-20250710.htm
  38. ^ "Red rainstorm alert downgraded to amber warning".
  39. ^ "No Friday school as bad weather wreaks havoc".
  40. ^ https://news.rthk.hk/rthk/ch/component/k2/1812739-20250710.htm
  41. ^ "Over 13,000 affected by Typhoon Danas, habagat". The Philippine Star. 6 July 2025. Retrieved 6 July 2025.
  42. ^ "1 reported dead in Metro Manila due to Bising, Habagat —NDRRMC". GMA News. 10 July 2025. Retrieved 10 July 2025.
  43. ^ "丹娜絲颱風襲台 屏東驚傳堤防溢流與土石流！山區122人預警撤離". CTWANT. 6 July 2025. Retrieved 6 July 2025.
  44. ^ "颱風丹娜絲釀2死726傷 全國災情9391件嘉南占75%" (in Chinese). Central News Agency. 9 July 2025. Retrieved 9 July 2025.
  45. ^ "影/驚險畫面曝光！丹娜絲颱風肆虐 台南文賢路鐵皮飛散" (in Chinese). CTi News. 6 July 2025. Retrieved 6 July 2025.
  46. ^ 姜筑 (6 July 2025). "中颱丹娜絲暴風圈觸陸 南投、台中等縣市宣布7日停班課 ｜ 公視新聞網 PNN". 公視新聞網 PNN (in Traditional Chinese). Retrieved 7 July 2025.
  47. ^ 整理, 數位內容部 (7 July 2025). "丹娜絲從桃竹出海！20縣市「豪雨特報」…直撞中央山脈減弱為輕颱，何時解除陸警？ - 今周刊". www.businesstoday.com.tw (in Chinese). Retrieved 7 July 2025.
  48. ^ "Agricultural Disaster Report of Typhoon Danas in 114". Statistics Department of the Ministry of Agriculture (in Chinese (Taiwan)). 7 July 2025.
  49. ^ "一號風球下 尖沙咀酒店吊船遇強風 兩女工一度被困險象橫生".
  50. ^ "一號風球下 尖沙咀酒店吊船遇強風 兩女工被困".
  51. ^ "乘酒店吊船遇強風 兩女工半空困4句鐘".
  52. ^ "Press Weather No. 060 - Very Hot Weather Warning".
  53. ^ "Hong Kong cancels T1 signal as Typhoon Danas moves away". South China Morning Post.
  54. ^ "Explainer | Hong Kong's hottest Xiaoshu: What does it mean and how can you cope?". South China Morning Post.
  55. ^ "The weather bureau has issued the year's first orange hot weather alert as typhoon signal No. 1 remains in effect". Teledifusão de Macau.
  56. ^ "SMG - Direção dos Serviços Meteorológicos e Geofísicos". Archived from the original on 8 July 2025.
  57. ^ "因水浸關係 新田公路往元朗方向近模範鄉的全線現已封閉".
  58. ^ "因棚架倒塌 土瓜灣道往觀塘方向介乎浙江街與落山道之間全線封閉".
  59. ^ https://news.rthk.hk/rthk/en/component/k2/1812776-20250710.htm
  60. ^ https://www.scmp.com/news/hong-kong/society/article/3317689/worker-dies-after-iron-beam-falls-hong-kong-construction-site
  61. ^ https://news.now.com/home/local/player?newsId=610495
  62. ^ "港珠澳大橋香港口岸地盤有工字鐵墮下 壓倒兩名工人一死一傷".
[edit]
Wikimedia Commons has media related to Typhoon Danas (2025).
Retrieved from "https://en.wikipedia.org/w/index.php?title=Typhoon_Danas_(2025)&oldid=1301645813"