Overall Red alert Tropical Cyclone for CHANTHU-21
in China, Philippines

Impact

Tropical Cyclone CHANTHU-21 can have a high humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GDACS
Glide number: TC-2021-000140-PHL
Exposed countries China, Philippines
Exposed population 5 million in Category 1 or higher
Maximum wind speed 287 km/h
Maximum storm surge 1.4 m (12 Sep 18:00 UTC)
Vulnerability Medium (China)
Landfall between
11 Sep 2021 18:00 - 12 Sep 2021 18:00

in China

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
Current 194 km/h 1.4 m n.a. 2.5
Overall 287 km/h 1.4 m n.a. 2.5

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

Wind

194 km/h Current Max.

Up to 7.4 million people in Category 1 strength or higher (see SSHS)

Impact Timeline

Alert Date (UTC) Max Winds (km/h) Population in
Tropical Storm or higher
Population in
Cat 1. or higher
Countries
Green 1 06 Sep 2021 06:00 176 1.2 million No people Japan, China
Green 2 06 Sep 2021 12:00 176 670 thousand No people Japan, China
Orange 3 06 Sep 2021 18:00 194 8.7 million 1.7 million China
Orange 4 07 Sep 2021 00:00 194 12.2 million 3.5 million China
Orange 5 07 Sep 2021 06:00 213 27.9 million 5.9 million China
Orange 6 07 Sep 2021 12:00 241 32.3 million 50 thousand China
Orange 7 07 Sep 2021 18:00 241 58 million 1.4 million China
Orange 8 08 Sep 2021 00:00 176 44.1 million 1.9 million China
Orange 9 08 Sep 2021 06:00 241 54.4 million 3.3 million Philippines, China
Orange 10 08 Sep 2021 12:00 167 64.8 million 3.6 million Philippines, China
Red 11 08 Sep 2021 18:00 194 85.4 million 7.4 million Philippines, China

Bulletin Timeline

Alert Date (UTC) Category
(SSHS)
Max winds
(km/h)
Population in
Tropical Storm
or higher
Population in
Cat.1 or higher
Location (lat, lon) Countries
GREEN
1 06 Sep 2021 06:00 Tropical depression 46 no people no people 14, 138.3
GREEN
2 06 Sep 2021 12:00 Tropical depression 56 no people no people 14.7, 138.1
GREEN
3 06 Sep 2021 18:00 Tropical storm 83 no people no people 15.3, 137.4
GREEN
4 07 Sep 2021 00:00 Tropical storm 93 no people no people 15.6, 136.6
GREEN
5 07 Sep 2021 06:00 Category 1 120 no people no people 16.1, 135.7
GREEN
6 07 Sep 2021 12:00 Category 1 130 no people no people 16.3, 134.6
GREEN
7 07 Sep 2021 18:00 Category 4 231 no people no people 16.3, 133.5
GREEN
8 08 Sep 2021 00:00 Category 4 222 no people no people 16, 132.3
GREEN
9 08 Sep 2021 06:00 Category 5 259 no people no people 15.6, 131.3
GREEN
10 08 Sep 2021 12:00 Category 4 250 no people no people 15.5, 130.3
GREEN
11 08 Sep 2021 18:00 Category 4 250 no people no people 15.4, 129.1
GREEN
11 09 Sep 2021 06:00 Category 5 259 no people no people 15.7, 127.2
GREEN
11 09 Sep 2021 18:00 Category 5 259 1.1 million people no people 16.8, 125.2
GREEN
11 10 Sep 2021 06:00 Category 4 250 2.3 million people 10000 people 18.2, 123.3
GREEN
11 10 Sep 2021 18:00 Category 4 241 11 million people 7100 people 19.5, 121.8
RED
11 11 Sep 2021 18:00 Category 3 194 46.8 million people 2.2 million people 22.1, 119.8
ORANGE
11 12 Sep 2021 18:00 Category 2 167 75.7 million people 7.2 million people 24.9, 119 China
GREEN
11 13 Sep 2021 18:00 Tropical storm 111 no people no people 28.5, 118.7 China
Actual track of the current bulletin
The alert for forecast greater than 3 days is limited to Orange level.
Download:



Exposed population - AoIs

Exposed population in the potential affected countries, provinces and populated places

Countries

Country
Philippines
China

Provinces

Region Province Country Population
Cagayan Valley Philippines 2.3 million people
Fujian China 33.3 million people
Zhejiang China 45.9 million people
Jiangxi China 41.8 million people

Populated places

Name Region Province Country City class Population
Ma-kung P'eng-hu Taiwan Major city -
Chongwu Fujian China City -
Daitou Fujian China City -
Hushi Fujian China City -
Hanjiang Fujian China City -
Putian Fujian China City 380000 people
Licheng Fujian China City -
Zhangcheng Fujian China City -
Shangjie Fujian China City 7300 people
Rongan Fujian China City -
Meicheng Fujian China City -
Xincheng Fujian China City -
Dongyou Fujian China City -
Xiongshan Fujian China City -
Songyuan Fujian China City -
Nanpu Fujian China City 59000 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)
Chi Mei CMJ unknown 0
Wang An 30 0
P Eng Hu 21 0
Makung AB MZG 31 Mil. Paved Yes 6500
24 0

Ports

Name LOCODE Country
Calayan Philippines
Peng Hu Taiwan
Tai Chung Taiwan
Xiuyu China

Dams

Reservoir Dam Name River Year
Lingxi Lingxi 1956
Jianxin Wanjiaoxi 1974
Dongzhen Mulanxi 1960
Dongxi Chaiqiaotouxi 1980
Guyang Kuxi 1961
Shuikou Min Jiang 1995
Gutian Gutianxi 1959
Xiakou Jianshangan 1973

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

1.4 m

The maximum Storm surge height is  1.4m in Zhangban, China. This height is estimated for 12 Sep 2021 18:00 UTC .

The JRC has developed an experimental global storm surge model. 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 (274 locations). Calculation based on advisory number 11 of 08 Sep 2021 18:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert Date (UTC) Name Country Storm surge height (m)
12 Sep 2021 18:00 Zhangban China  1.4
12 Sep 2021 18:00 Chongwu China  1.4
12 Sep 2021 18:00 Dawu China  1.4
12 Sep 2021 18:00 Hsiao-tso China  1.4
12 Sep 2021 18:00 Qian'an China  1.4
12 Sep 2021 18:00 Wangchuan China  1.2
12 Sep 2021 18:00 Zhongmen China  1.2
12 Sep 2021 18:00 P'u-hsi China  1.2
12 Sep 2021 18:00 Fengwei China  1.2
12 Sep 2021 18:00 P'u-hsi-ch'eng China  1.1
12 Sep 2021 18:00 Hushi China  1.1
12 Sep 2021 18:00 Meizhou China  1.0
12 Sep 2021 18:00 Gaoshan China  1.0
12 Sep 2021 18:00 Hanjiang China  1.0
12 Sep 2021 18:00 Chiang-k'ou China  1.0
12 Sep 2021 18:00 Daitou China  0.9
12 Sep 2021 18:00 Pinghai China  0.9
12 Sep 2021 08:00 Ch'ang-an Taiwan  0.9
12 Sep 2021 08:00 Ch'eng-ch'ien Taiwan  0.9
12 Sep 2021 05:00 Chiang-chun-ao Taiwan  0.9
12 Sep 2021 18:00 Tangbian China  0.9
12 Sep 2021 07:00 Chu-kao-wan Taiwan  0.8
12 Sep 2021 18:00 Shicheng China  0.8
12 Sep 2021 03:00 Chung-p'ing Taiwan  0.7
12 Sep 2021 16:00 Yakou China  0.7
12 Sep 2021 07:00 P'eng-hu-erh-ts'un Taiwan  0.7
12 Sep 2021 15:00 Shih-shih China  0.7
12 Sep 2021 06:00 Wai-an Taiwan  0.7
12 Sep 2021 07:00 Feng-kuei-li Taiwan  0.7
12 Sep 2021 18:00 Fengting China  0.7
12 Sep 2021 18:00 Dongsha China  0.6
12 Sep 2021 15:00 Dongyuan China  0.6
12 Sep 2021 18:00 Lingchuan China  0.6
12 Sep 2021 15:00 Hsiang-chih China  0.6
12 Sep 2021 05:00 Hua-hsu Taiwan  0.6
10 Sep 2021 17:00 San Dionisio Philippines  0.6
12 Sep 2021 07:00 Ma-kung Taiwan  0.6
12 Sep 2021 06:00 Chu-mu-shui Taiwan  0.6
12 Sep 2021 18:00 Haikou China  0.6
12 Sep 2021 18:00 San Shah China  0.6
12 Sep 2021 18:00 Longtian China  0.6
12 Sep 2021 18:00 Gangtou China  0.6
12 Sep 2021 18:00 Nanri China  0.6
12 Sep 2021 18:00 Fuye China  0.6
12 Sep 2021 13:00 Yongning China  0.6
12 Sep 2021 06:00 Lung-men Taiwan  0.5
12 Sep 2021 18:00 Beicuo China  0.5
12 Sep 2021 14:00 Shihu China  0.5
12 Sep 2021 18:00 Baisheng China  0.5
12 Sep 2021 18:00 Chiang-t'ien China  0.5
12 Sep 2021 03:00 An-ping Taiwan  0.4
12 Sep 2021 11:00 Weitou China  0.4
12 Sep 2021 11:00 Chin-ching China  0.4
12 Sep 2021 18:00 Tung-tai China  0.4
12 Sep 2021 18:00 Guanban China  0.4
12 Sep 2021 18:00 Wuhang China  0.4
12 Sep 2021 18:00 Ta-ch'iu China  0.4
12 Sep 2021 10:00 Yang-chai Taiwan  0.4
12 Sep 2021 13:00 Tung-shih China  0.4
12 Sep 2021 10:00 Chin-men Tao Taiwan  0.4
12 Sep 2021 18:00 Cao Yu China  0.4
12 Sep 2021 08:00 Xucuo China  0.3
12 Sep 2021 08:00 Gulangyu China  0.3
12 Sep 2021 08:00 Daomei China  0.3
12 Sep 2021 08:00 Zhenhai China  0.3
12 Sep 2021 18:00 Guhuai China  0.3
12 Sep 2021 18:00 Langqi China  0.3
12 Sep 2021 18:00 Tantou China  0.3
12 Sep 2021 18:00 Chang-chiang China  0.3
12 Sep 2021 18:00 Yunlong China  0.3
12 Sep 2021 18:00 Chin-feng China  0.3
12 Sep 2021 18:00 Guanjing China  0.3
12 Sep 2021 18:00 Qingfeng China  0.3
12 Sep 2021 18:00 Fengwo China  0.3
12 Sep 2021 18:00 Mabi China  0.3
12 Sep 2021 09:00 Chin-men Taiwan  0.3
12 Sep 2021 18:00 Pingtan China  0.3
12 Sep 2021 18:00 Houtian China  0.3
12 Sep 2021 03:00 Chung-ho Taiwan  0.3
12 Sep 2021 07:00 Liu'ao China  0.3
12 Sep 2021 08:00 Chihu China  0.3
12 Sep 2021 08:00 Chen-hai China  0.3
12 Sep 2021 18:00 Ting-hai China  0.3
10 Sep 2021 18:00 Kaniwalan Philippines  0.3
12 Sep 2021 07:00 Gangkou China  0.3
12 Sep 2021 06:00 Chi-pei Taiwan  0.3
12 Sep 2021 07:00 Guleitou China  0.3
12 Sep 2021 09:00 Ch'ing-hsu Taiwan  0.3
12 Sep 2021 18:00 Xiahu China  0.3
12 Sep 2021 08:00 Fugong China  0.3
12 Sep 2021 08:00 Gangwei China  0.3
12 Sep 2021 10:00 Jiangtou China  0.3
12 Sep 2021 18:00 Hanjiang China  0.3
12 Sep 2021 18:00 Songcheng China  0.3
12 Sep 2021 18:00 Wuqu China  0.3
12 Sep 2021 08:00 Chendai China  0.3
12 Sep 2021 08:00 Shentu China  0.3
12 Sep 2021 07:00 Yung-lung Taiwan  0.3
12 Sep 2021 16:00 Tung-ch'ung China  0.3
12 Sep 2021 08:00 Huqiu China  0.3
12 Sep 2021 08:00 Wutian China  0.3
12 Sep 2021 01:00 Yung-an-ts'un Taiwan  0.3
12 Sep 2021 08:00 An-ting Taiwan  0.3
12 Sep 2021 03:00 Hai-pu Taiwan  0.3
12 Sep 2021 18:00 Anhai China  0.3
12 Sep 2021 18:00 Sansha China  0.3
12 Sep 2021 18:00 Chien-chiang China  0.3
12 Sep 2021 08:00 Songyu China  0.3
12 Sep 2021 08:00 Xiamen China  0.3
12 Sep 2021 17:00 Xinan China  0.3
12 Sep 2021 07:00 Fotan China  0.2
12 Sep 2021 08:00 Fu-hsing Taiwan  0.2
12 Sep 2021 08:00 Pu-tai Taiwan  0.2
12 Sep 2021 08:00 Chang-t'an Taiwan  0.2
12 Sep 2021 08:00 Wu-nan Taiwan  0.2
12 Sep 2021 18:00 Ch'ang-t'an-wo Taiwan  0.2
12 Sep 2021 18:00 Luxia China  0.2
12 Sep 2021 07:00 Chiang-chun Taiwan  0.2
12 Sep 2021 02:00 K'o-tzu-liao Taiwan  0.2
12 Sep 2021 18:00 Da'ao China  0.2
12 Sep 2021 18:00 Huang-ch'i China  0.2
12 Sep 2021 18:00 Gexiang China  0.2
12 Sep 2021 18:00 I-shan China  0.2
12 Sep 2021 08:00 Hsia-mei China  0.2
12 Sep 2021 08:00 Hecuo China  0.2
12 Sep 2021 18:00 Xiabu China  0.2
12 Sep 2021 18:00 Zhuangyuanqiao China  0.2
12 Sep 2021 18:00 Longwan China  0.2
12 Sep 2021 18:00 Jiangtan China  0.2
12 Sep 2021 18:00 Sha-fan-chieh China  0.2
12 Sep 2021 18:00 Jinxiang China  0.2
11 Sep 2021 22:00 Tung-chiang Taiwan  0.2
11 Sep 2021 22:00 T'ien-ch'ien-ts'o Taiwan  0.2
11 Sep 2021 22:00 Wu-lung Taiwan  0.2
12 Sep 2021 13:00 Sa-ti Taiwan  0.2
12 Sep 2021 13:00 Hai-kou Taiwan  0.2
12 Sep 2021 13:00 Chung-ch'i Taiwan  0.2
12 Sep 2021 13:00 San-hsing Taiwan  0.2
12 Sep 2021 08:00 Aotou China  0.2
12 Sep 2021 08:00 San-ku-ts'un Taiwan  0.2
12 Sep 2021 18:00 San-chia-shih China  0.2
10 Sep 2021 19:00 Rarasi Philippines  0.2
12 Sep 2021 16:00 Sha-shan Taiwan  0.2
12 Sep 2021 16:00 Wang-kung Taiwan  0.2
12 Sep 2021 08:00 Jiuzhen China  0.2
12 Sep 2021 10:00 Hsin-chiang Taiwan  0.2
12 Sep 2021 10:00 Hsia-lun Taiwan  0.2
12 Sep 2021 16:00 T'ai-hsi Taiwan  0.2
12 Sep 2021 18:00 Changchun China  0.2
12 Sep 2021 18:00 Yacheng China  0.2
12 Sep 2021 18:00 Siqianjie China  0.2
12 Sep 2021 18:00 Xiaodoumen China  0.2
12 Sep 2021 18:00 Chin-ch'ing China  0.2
12 Sep 2021 18:00 Dituan China  0.2
12 Sep 2021 08:00 Haicang China  0.2
12 Sep 2021 18:00 Lu-kang Taiwan  0.2
12 Sep 2021 18:00 Ching-shui Taiwan  0.2
12 Sep 2021 08:00 Gongkou China  0.2
12 Sep 2021 08:00 Dongshan China  0.2
12 Sep 2021 08:00 Lianhe China  0.2
12 Sep 2021 18:00 Hai huang Taiwan  0.2
12 Sep 2021 08:00 Liuwudian China  0.2
12 Sep 2021 18:00 Xiaguan China  0.2
10 Sep 2021 19:00 Banua Philippines  0.2
12 Sep 2021 18:00 Dalu China  0.2
12 Sep 2021 18:00 Songmen China  0.2
12 Sep 2021 08:00 Xindian China  0.2
12 Sep 2021 07:00 Dianqian China  0.2
10 Sep 2021 23:00 Nakanmuan Philippines  0.2
10 Sep 2021 23:00 Sabtang Philippines  0.2
10 Sep 2021 23:00 Chavayan Philippines  0.2
11 Sep 2021 23:00 Shui-ti-liao Taiwan  0.2
12 Sep 2021 08:00 Chengguanzhen China  0.2
11 Sep 2021 23:00 Hung-nan-li Taiwan  0.2
12 Sep 2021 08:00 Shijing China  0.2
12 Sep 2021 18:00 Dinggang China  0.2
12 Sep 2021 18:00 Ancheng China  0.2
12 Sep 2021 18:00 Chang-chia-li China  0.2
12 Sep 2021 18:00 Hsi-hui-tsui China  0.2
12 Sep 2021 18:00 Ch'ien-ni China  0.2
12 Sep 2021 18:00 Chengpu China  0.2
12 Sep 2021 18:00 Songxia China  0.2
10 Sep 2021 16:00 Minabul Philippines  0.2
10 Sep 2021 18:00 Dadao Philippines  0.2
11 Sep 2021 19:00 Liu-chiu Hsu Taiwan  0.2
11 Sep 2021 23:00 Kao-hsiung Taiwan  0.2
12 Sep 2021 08:00 Nanao China  0.2
12 Sep 2021 08:00 Huanggang China  0.2
12 Sep 2021 08:00 Raoping China  0.2
12 Sep 2021 18:00 Ch'i-ting Taiwan  0.2
12 Sep 2021 08:00 Sidu China  0.2
12 Sep 2021 08:00 Ssu-tu China  0.2
12 Sep 2021 18:00 Shacheng China  0.2
12 Sep 2021 18:00 Pucheng China  0.2
12 Sep 2021 18:00 Chu-ch'iao-chen China  0.2
12 Sep 2021 18:00 Dingqiao China  0.2
12 Sep 2021 18:00 Chaoyang China  0.2
12 Sep 2021 18:00 Chiu-hsiang-chen China  0.2
12 Sep 2021 18:00 Hsieh-t'ang China  0.2
12 Sep 2021 18:00 Linshan China  0.2
12 Sep 2021 18:00 Chou-hung-ch'iu China  0.2
12 Sep 2021 18:00 Heng-pa-ts'un China  0.2
12 Sep 2021 18:00 Hsiung-ting-yu China  0.2
12 Sep 2021 18:00 Chenyu China  0.2
12 Sep 2021 18:00 Huanshan China  0.2
12 Sep 2021 18:00 Kanmen China  0.2
12 Sep 2021 18:00 Chumen China  0.2
11 Sep 2021 13:00 Kenting Taiwan  0.1
11 Sep 2021 22:00 Ta-lin-pu Taiwan  0.1
12 Sep 2021 18:00 Yuan-li Taiwan  0.1
12 Sep 2021 18:00 Tung-hsiao Taiwan  0.1
12 Sep 2021 18:00 Chu-nan Taiwan  0.1
12 Sep 2021 18:00 Ch'ien-tzu-chiao Taiwan  0.1
12 Sep 2021 18:00 Beilong China  0.1
12 Sep 2021 18:00 Huangwan China  0.1
12 Sep 2021 18:00 Ganpu China  0.1
12 Sep 2021 18:00 Changchuanba China  0.1
12 Sep 2021 18:00 Touyan China  0.1
12 Sep 2021 18:00 Ch'eng-ao China  0.1
12 Sep 2021 18:00 Shih-ma-chuang China  0.1
12 Sep 2021 18:00 Baisha China  0.1
11 Sep 2021 17:00 Feng-chiang Taiwan  0.1
11 Sep 2021 17:00 Fang-shan Taiwan  0.1
12 Sep 2021 08:00 Gongqiancun China  0.1
12 Sep 2021 08:00 Zhelin China  0.1
12 Sep 2021 08:00 Shenao China  0.1
12 Sep 2021 18:00 Kuan-yin Taiwan  0.1
12 Sep 2021 03:00 Kuei-shan Taiwan  0.1
11 Sep 2021 21:00 Hou-ta-ts'o Taiwan  0.1
12 Sep 2021 07:00 Houzhai China  0.1
12 Sep 2021 18:00 Banping China  0.1
12 Sep 2021 18:00 Bei'ao China  0.1
12 Sep 2021 18:00 Shih-t'ang China  0.1
10 Sep 2021 12:00 Buguey Philippines  0.1
10 Sep 2021 12:00 Gonzaga Philippines  0.1
10 Sep 2021 12:00 Bawa Philippines  0.1
10 Sep 2021 12:00 Cabiraoan Philippines  0.1
12 Sep 2021 07:00 Huanglong China  0.1
12 Sep 2021 18:00 Cheng-chia-tai China  0.1
12 Sep 2021 18:00 Zhapu China  0.1
12 Sep 2021 18:00 Niu-ch'iao-shih China  0.1
10 Sep 2021 12:00 Casambalangan Philippines  0.1
10 Sep 2021 12:00 San Vincente Philippines  0.1
10 Sep 2021 16:00 Cadagatan Philippines  0.1
10 Sep 2021 22:00 Ivana Philippines  0.1
11 Sep 2021 01:00 Mahatao Philippines  0.1
10 Sep 2021 22:00 Itbud Philippines  0.1
11 Sep 2021 01:00 Basco Philippines  0.1
11 Sep 2021 13:00 O-luan-pi Taiwan  0.1
11 Sep 2021 14:00 She-liao Taiwan  0.1
11 Sep 2021 14:00 Che-cheng Taiwan  0.1
11 Sep 2021 14:00 Heng-chjun Taiwan  0.1
11 Sep 2021 19:00 Chia-ho-ts'un Taiwan  0.1
12 Sep 2021 11:00 Chencheng China  0.1
12 Sep 2021 18:00 Lingmen China  0.1
12 Sep 2021 18:00 Aohuan China  0.1
12 Sep 2021 18:00 Guan'ao China  0.1
12 Sep 2021 18:00 Chung-fu Taiwan  0.1
12 Sep 2021 18:00 Dahu China  0.1
10 Sep 2021 18:00 Nagsidel Philippines  0.1
10 Sep 2021 16:00 Sorongan Philippines  0.1
11 Sep 2021 13:00 Maobitou Taiwan  0.1
11 Sep 2021 13:00 Ta-kuang Taiwan  0.1
11 Sep 2021 14:00 Kuo-ch'i Taiwan  0.1
12 Sep 2021 12:00 Hsi-pu China  0.1
11 Sep 2021 22:00 I-jen Taiwan  0.1
12 Sep 2021 08:00 Chelim China  0.1
12 Sep 2021 18:00 Chiang-tzu-p'ing Taiwan  0.1
12 Sep 2021 18:00 Tan-shui Taiwan  0.1
12 Sep 2021 18:00 San-chih Taiwan  0.1
12 Sep 2021 18:00 Hsing-hsing-chen China  0.1
12 Sep 2021 18:00 Ch'ang-chieh China  0.1
12 Sep 2021 18:00 Chou-chia-peng China  0.1
12 Sep 2021 18:00 Chin-ssu-niang-ch'iao China  0.1