Overall Orange alert Tropical Cyclone for NANGKA-20
in Viet Nam, China, Laos, Thailand

Impact

Tropical Cyclone NANGKA-20 can have a medium humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GDACS (JTWC)
Exposed countries Viet Nam, China, Laos, Thailand
Exposed population No people in Category 1 or higher
Maximum wind speed 93 km/h
Maximum storm surge 1.3 m (13 Oct 17:00 UTC)
Vulnerability High (Vietnam)

GDACS Score

GDACS alert score for Tropical Cyclones is 0.5 (GREEN Alert), 1.5 (ORANGE Alert), 2.5 (RED Alert)
For more info on GDACS alert score click here.
  Wind Storm surge Rainfall GDACS score
GDACS Current 83 km/h 1.3 m n.a. 1.5
GDACS Overall 93 km/h 1.3 m n.a. 1.5

Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

Wind

83 km/h Current

Up to 75.5 million people in Tropical storm (see SSHS)

Impact Timeline

Alert Date (UTC) Max Winds (km/h) Population in
Tropical Storm
Population in
Cat. 1 or higher
Countries
Orange 1 11 Oct 2020 18:00 111 62.6 million No people China, Viet Nam, Laos
Orange 2 12 Oct 2020 00:00 111 63.7 million No people China, Viet Nam, Laos
Orange 3 12 Oct 2020 06:00 111 65.8 million No people China, Viet Nam, Laos, Thailand
Orange 4 12 Oct 2020 12:00 102 52 million No people China, Viet Nam, Laos, Thailand
Orange 5 12 Oct 2020 18:00 83 62.5 million No people China, Viet Nam, Laos, Thailand
Orange 6 13 Oct 2020 00:00 83 60.4 million No people China, Viet Nam, Laos, Thailand
Orange 7 13 Oct 2020 06:00 83 55.5 million No people China, Viet Nam, Laos
Orange 8 13 Oct 2020 12:00 102 70.6 million No people China, Viet Nam, Laos
Orange 9 13 Oct 2020 18:00 93 76.3 million No people China, Viet Nam, Laos
Orange 10 14 Oct 2020 00:00 83 75.6 million No people Viet Nam, China, Laos

Bulletin Timeline

Alert Date (UTC) Category Max winds
(km/h)
Population in
Tropical Storm
Population in
Cat.1 or higher
Location (lat, lon) Countries
GREEN
1 11 Oct 2020 18:00 Tropical depression 46 <1000 people no people 17.5, 118.2
GREEN
2 12 Oct 2020 00:00 Tropical depression 56 no people no people 17.7, 117.2
GREEN
3 12 Oct 2020 06:00 Tropical storm 65 1600 people no people 17.9, 115.7
GREEN
4 12 Oct 2020 12:00 Tropical storm 65 970000 people no people 18.2, 114.4 China
GREEN
5 12 Oct 2020 18:00 Tropical storm 74 28.6 million people no people 18.5, 113.2 China
ORANGE
6 13 Oct 2020 00:00 Tropical storm 74 25.6 million people no people 18.8, 112.3 Viet Nam
ORANGE
7 13 Oct 2020 06:00 Tropical storm 83 33.7 million people no people 18.7, 111.5 Viet Nam
ORANGE
8 13 Oct 2020 12:00 Tropical storm 93 39.1 million people no people 19, 110.5 Viet Nam
ORANGE
9 13 Oct 2020 18:00 Tropical storm 83 67.6 million people no people 19.8, 108.9 Viet Nam
ORANGE
10 14 Oct 2020 00:00 Tropical storm 83 40.6 million people no people 20, 106.8 Viet Nam
ORANGE
10 14 Oct 2020 12:00 Tropical storm 65 20.2 million people no people 20, 105 Viet Nam
GREEN
10 15 Oct 2020 00:00 Tropical depression 56 no people no people 20.1, 103.5 Viet Nam
GREEN
10 15 Oct 2020 12:00 Tropical depression 37 no people no people 20, 102.3 Laos
Actual track of the current bulletin
The alert for forecast greater than 3 days is limited to Orange level.



Exposed population

Countries

Country
Vietnam
China
Laos

Provinces

Region Province Country Population
Nam Ha Viet Nam 2.6 million people
Thai Binh Viet Nam 1.8 million people
Ninh Binh Viet Nam 850000 people
Hai Phong Viet Nam 1.6 million people
Thanh Hoa Viet Nam 3.3 million people
Hai Hung Viet Nam 2.7 million people
Quang Ninh Viet Nam 910000 people
Hoa Binh Viet Nam 720000 people
Ha Tay Viet Nam 2.2 million people
Ha Bac Viet Nam 2.3 million people
Nghe An Viet Nam 2.7 million people
Ha Noi Viet Nam 2.1 million people
Lang Son Viet Nam 680000 people
Bac Thai Viet Nam 1.1 million people
Vinh Phu Viet Nam 2.2 million people
Ha Tinh Viet Nam 1.3 million people
Guangxi China 46.8 million people
Houaphan Laos 270000 people
Son La Viet Nam 780000 people
Hainan China 7.2 million people
Tuyen Quang Viet Nam 640000 people
Borikhamxai Laos 160000 people
Quang Binh Viet Nam 740000 people
Khammouan Laos 280000 people
Yen Bai Viet Nam 640000 people
Cao Bang Viet Nam 640000 people
Xiangkhoang Laos 210000 people
Guangdong China 69.6 million people
Louangphrabang Laos 380000 people
Lai Chau Viet Nam 500000 people

Populated places

Name Region Province Country City class Population
Thái Bình Thai Binh Vietnam City 52000 people
Thuan Nghiep Thai Binh Vietnam City -
Nam Dinh Nam Dimh Vietnam City 190000 people
Ninh Bình Ninh Binh Vietnam City 36000 people
Hai Phòng Hai Duong Vietnam Major city 590000 people
Sam Son Thanh Hoa Vietnam City -
Thuy U Hai Duong Vietnam City -
Phu Lý Ha Namh Vietnam City 31000 people
Thanh Hóa Thanh Hoa Vietnam City 110000 people
Hai Duong Hai Duong Vietnam City 57000 people
Cam Pha Quang Ninh Vietnam City 130000 people
Hà Noi Ha Noi Vietnam Capital 1.4 million people
Hòa Bình Hoa Binh Vietnam City 100000 people
Vinh Nghe An Vietnam City 100000 people
Thái Nguyên Bac Thai Vietnam City 130000 people
Duntou Hainan China City -
Ningming Guangxi China City -
Longzhou Guangxi China City -
Huangliu Hainan China City -
Beihai Guangxi China City 280000 people
Lingao Hainan China City 64000 people
Yacheng Hainan China City -
Lianzhou Guangxi China City 70000 people
Sanya Hainan China City 140000 people
Jinjiang Hainan China City -
Baocheng Hainan China City -
Yulin Hainan China City -
Leicheng Guangdong China City -
Dingcheng Hainan China City -
Haikou Hainan China City 600000 people
Lingcheng Guangxi China City -
Lingcheng Hainan China City -
Dongli Guangdong China City 100000 people
Jiaji Hainan China City -
Chikan Guangdong China City -
Zhanjiang Guangdong China City 630000 people
Wancheng Hainan China City -
Wencheng Hainan China City -
Huangpo Guangdong China City -
Meilu Guangdong China City 100000 people
Maoming Guangdong China City 460000 people
Gaozhou Guangdong China City 160000 people
Chuncheng Guangdong China City 150000 people
Jiangcheng Guangdong China City -
Encheng Guangdong China City 110000 people
Cangcheng Guangdong China City -
Taicheng Guangdong China City 140000 people

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft)
Hai Phong Cat Bi HPH 30480 Civ. Paved No 7800
Hai Phong Kien An 4 0
Bai Thuong 13 0
Hanoi / Bac Mai 5 0
Ha Noi Gia Lam VGL 17 Mil. Paved No 6700
Kep 12 0
Noibai HAN 11 Civ. Paved Yes 10400
Hoa Lac 43 0
Vinh VII 11 Mil. Unpaved No 7100
Ningming 125 0
Ban Nape 762 0
Xayabury XAY unknown 0
Foluo Northeast 165 0
Sam Neua NEU 1000 Civ. Unpaved No 3400
Jtalaishi 121 0
Beihai BHY 25 0
Na San SQH 625 Civ. Unpaved No 7800
Houeisay HOE unknown 0
Udomxay UDO unknown 0
Sanya (Fenghuang) SYX 28 Civ. Paved Yes 11100
Sanya-Yaxian 15 0
Haikou 26 Civ. Paved Yes 11800
Lingshui 25 0
Muang Phonsavan 1100 0
Meilan HAK 23 0
Suixi 32 0
Xieng Khouang XKH 1067 Civ. Unpaved No 4900
Zhanjiang ZHA 75 0
Pa Doung 1433 0
Long Tieng 980 0
Woody Island 14 0
Zhuhai ZUH 6 0
Shanzhou SZO unknown 0

Ports

Name LOCODE Country
Le Mon Vietnam
Haiphong VNHPH Vietnam
Hongai VNHON Vietnam
Cam Pha Vietnam
Las Tres Marias Island Vietnam
Hanoi VNHAN Vietnam
Van Hoa Vietnam
Vinh VNVNH Vietnam
Ben Thuy VNNGT Vietnam
Yu Lin Vietnam
Basuo CNBAS China
Paso China
Fangcheng CNFAN China
Cua Lo China
Fangcheng Gang China
Wei Chou Island China
Bei Hai CNBHY China
Lin Kao China
Sanya CNSYX China
Yu Lin Chiang China
Hsu Wen China
Cape Bastion China
Lei Shou China
Haikou CNHAK China
Zhanjiang CNZHA China
Shuidong CNSDG China
Yangjiang CNYJI China
Triton Island China
Woody Island China
Lincoln Island China

Dams

Reservoir Dam Name River Year
Hoa Binh Da 1994
Tuoxin Ganen He 1978
Daguanba Changhua Jiang 1995
Shilu Shilu 1973
Naban Mingjiang He 1960
Thac Ba Chay 1971
Kelan Trib. Yu Jiang -99
Changmao Wanglou 1960
Tunliu Trib. Yu Jiang -99
Fengtinghe Bachi Jiang 1960
Songtao Nandu Jiang 1970
Baogu Hingyuan 1979
Hongchaojiang Hongchao Jiang 1964
Dawangtan Bachi Jiang 1960
Fushan Huachang 1974
Banling Shanya 1969
Jiatan Haizai 1961
Hexi Rong Jiang 1958
Hepu Xiaojiang He 1960
Xiaomei Duzuong 1975
Xiaojiang Xiaojiang He 1960
Niululing Wanquan 1979
Lingdong Yin Jiang 1963
Hedi Jiuzhou Jiang 1961
Renshui Luoguang Shui 1975
Gaozhou Dajing He 1959
Huangsha Yanghua Jiang 1960
Fucao Qianpai He 1997
Donghu Nalong He 1961
Jinjiang Tan He 1972
Dalongdong Dalongdong He 1959

Rainfall

Rainfall accumulation of the past 24h, as detected by the Global Precipitation Measurement mission of NASA. For more information, see https://www.nasa.gov/mission_pages/GPM/main/index.html.

...

StormSurge

1.3 m

The maximum Storm surge height is  1.3m in Taiping, China. This height is estimated for 13 Oct 2020 17:00 UTC .

The JRC has developed an experimental global storm surge model, which is run after each advisory issued by the regional tropical cyclone centres. The calculations are published about 20 minutes after a new advisory is detected by GDACS. The calculations identify the populated places affected by storm surge up to three days in advance, using the forecasted track. When forecasts change, the associated storm surge changes too and alert levels may go up or down. All links, data, statistics and maps refer to the latest available calculation. If the calculation for the last advisory is not completed, the latest available calculation is shown.

Locations affected by Storm surge (558 locations). Calculation based on advisory number 10 of 14 Oct 2020 00:00:00 UTC. (Simulation using 0.5 minute resolution)

No content available ..