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 0.7 m (12 Sep 12:00 UTC)
Vulnerability Medium (China)
Landfall between
12 Sep 2021 12:00 - 13 Sep 2021 12:00

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 167 km/h 0.7 m n.a. 1.5
Overall 287 km/h 0.7 m n.a. 1.5

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

Wind

167 km/h Current Max.

Up to 3.6 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

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
10 09 Sep 2021 00:00 Category 4 231 no people no people 15.6, 128.2
GREEN
10 09 Sep 2021 12:00 Category 4 222 <1000 people no people 16.3, 126.3
GREEN
10 10 Sep 2021 00:00 Category 4 231 2.3 million people no people 17.5, 124.2
GREEN
10 10 Sep 2021 12:00 Category 4 241 7.7 million people 8900 people 18.8, 122.5
GREEN
10 11 Sep 2021 12:00 Category 4 222 41.1 million people no people 21, 119.9
ORANGE
10 12 Sep 2021 12:00 Category 2 167 60.5 million people 3.6 million people 23.2, 118.2
GREEN
10 13 Sep 2021 12:00 Tropical storm 111 no people no people 25.5, 116.8 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

Populated places

Name Region Province Country City class Population
Chihu Fujian China City -
Fotan Fujian China City -
Huxi Fujian China City -
Chengguanzhen Fujian China City -
Duxun Fujian China City -
Suian Fujian China City -
Shiliu Fujian China City -
Zhangzhou Fujian China City 590000 people
Shancheng Fujian China City -
Yanshi Fujian China City -
Longyan Fujian China City 120000 people
Zhixi Fujian China City -
Lianfeng Fujian China City -

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)
17 0
Liangcheng 381 0

Ports

Name LOCODE Country
Calayan Philippines
Zhangzhou China

Dams

Reservoir Dam Name River Year
Yangmei Dengfan He 1977
Zumalin Xugouxi 1976
Huanggang Hongfangxi 1974
Guanyang Huangtan He 1991
Wananxi Wananxi 1995

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

0.7 m

The maximum Storm surge height is  0.7m in Gongkou, China. This height is estimated for 12 Sep 2021 12:00 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 (165 locations). Calculation based on advisory number 10 of 08 Sep 2021 12:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert Date (UTC) Name Country Storm surge height (m)
12 Sep 2021 12:00 Gongkou China  0.7
12 Sep 2021 12:00 Dongshan China  0.7
12 Sep 2021 12:00 Sidu China  0.7
12 Sep 2021 12:00 Ssu-tu China  0.7
12 Sep 2021 12:00 Gangkou China  0.6
12 Sep 2021 12:00 Guleitou China  0.6
12 Sep 2021 12:00 Chendai China  0.6
12 Sep 2021 12:00 Hsi-pu China  0.6
12 Sep 2021 12:00 Liu'ao China  0.6
12 Sep 2021 12:00 Chihu China  0.5
12 Sep 2021 12:00 Xucuo China  0.5
12 Sep 2021 12:00 Gulangyu China  0.5
12 Sep 2021 12:00 Daomei China  0.5
12 Sep 2021 12:00 Songyu China  0.5
12 Sep 2021 12:00 Fugong China  0.5
12 Sep 2021 12:00 Gangwei China  0.5
12 Sep 2021 12:00 Xiamen China  0.5
12 Sep 2021 12:00 Shentu China  0.5
12 Sep 2021 12:00 Huqiu China  0.5
12 Sep 2021 12:00 Wutian China  0.5
12 Sep 2021 12:00 Chen-hai China  0.5
12 Sep 2021 12:00 Zhenhai China  0.5
12 Sep 2021 12:00 Fotan China  0.5
12 Sep 2021 12:00 Dianqian China  0.4
12 Sep 2021 12:00 Hsia-mei China  0.4
12 Sep 2021 12:00 Yakou China  0.4
12 Sep 2021 12:00 Hecuo China  0.4
10 Sep 2021 20:00 Kaniwalan Philippines  0.4
10 Sep 2021 20:00 Nagsidel Philippines  0.4
12 Sep 2021 12:00 An-ting Taiwan  0.4
12 Sep 2021 12:00 Jiangtou China  0.4
12 Sep 2021 12:00 Chin-men Taiwan  0.4
12 Sep 2021 12:00 Aotou China  0.4
12 Sep 2021 12:00 Yongning China  0.4
12 Sep 2021 12:00 Shih-shih China  0.4
12 Sep 2021 12:00 Yang-chai Taiwan  0.4
12 Sep 2021 12:00 Liuwudian China  0.4
12 Sep 2021 12:00 Chin-men Tao Taiwan  0.4
12 Sep 2021 12:00 Zhangban China  0.4
12 Sep 2021 12:00 Dongyuan China  0.4
12 Sep 2021 12:00 Hsiang-chih China  0.4
12 Sep 2021 12:00 Xindian China  0.4
12 Sep 2021 12:00 Haicang China  0.4
12 Sep 2021 12:00 Chencheng China  0.3
12 Sep 2021 12:00 Ch'ing-hsu Taiwan  0.3
12 Sep 2021 12:00 Shihu China  0.3
12 Sep 2021 12:00 Lianhe China  0.3
12 Sep 2021 12:00 Weitou China  0.3
12 Sep 2021 12:00 Qian'an China  0.3
12 Sep 2021 12:00 Chongwu China  0.3
12 Sep 2021 12:00 Jiuzhen China  0.3
12 Sep 2021 12:00 Shijing China  0.3
12 Sep 2021 12:00 Chin-ching China  0.3
12 Sep 2021 12:00 Wangchuan China  0.3
12 Sep 2021 12:00 Dawu China  0.3
12 Sep 2021 12:00 Hushi China  0.3
12 Sep 2021 12:00 Fengwei China  0.3
12 Sep 2021 12:00 Hsiao-tso China  0.3
12 Sep 2021 12:00 Tung-shih China  0.3
12 Sep 2021 12:00 Zhongmen China  0.3
12 Sep 2021 12:00 P'u-hsi China  0.3
12 Sep 2021 12:00 Hanjiang China  0.3
12 Sep 2021 12:00 Chiang-k'ou China  0.3
10 Sep 2021 18:00 San Dionisio Philippines  0.3
12 Sep 2021 12:00 P'u-hsi-ch'eng China  0.3
12 Sep 2021 12:00 Chengguanzhen China  0.3
12 Sep 2021 12:00 Daitou China  0.3
12 Sep 2021 12:00 Gaoshan China  0.3
12 Sep 2021 12:00 Meizhou China  0.3
12 Sep 2021 12:00 Huanggang China  0.2
12 Sep 2021 12:00 Tangbian China  0.2
12 Sep 2021 12:00 Pinghai China  0.2
12 Sep 2021 12:00 Dongsha China  0.2
12 Sep 2021 12:00 Lingchuan China  0.2
12 Sep 2021 12:00 Fengting China  0.2
12 Sep 2021 12:00 Baisheng China  0.2
10 Sep 2021 20:00 Rarasi Philippines  0.2
12 Sep 2021 12:00 Shicheng China  0.2
12 Sep 2021 12:00 Beicuo China  0.2
12 Sep 2021 12:00 Nanri China  0.2
12 Sep 2021 12:00 San Shah China  0.2
12 Sep 2021 12:00 Chiang-t'ien China  0.2
12 Sep 2021 12:00 Fuye China  0.2
12 Sep 2021 12:00 Tung-tai China  0.2
12 Sep 2021 12:00 Guanban China  0.2
12 Sep 2021 12:00 Huanglong China  0.2
12 Sep 2021 12:00 Haikou China  0.2
12 Sep 2021 12:00 Longtian China  0.2
12 Sep 2021 12:00 Gangtou China  0.2
10 Sep 2021 19:00 Dadao Philippines  0.2
12 Sep 2021 12:00 Zhelin China  0.2
12 Sep 2021 07:00 Chung-p'ing Taiwan  0.2
12 Sep 2021 12:00 Wuhang China  0.2
12 Sep 2021 12:00 Songcheng China  0.2
12 Sep 2021 12:00 Sansha China  0.2
10 Sep 2021 12:00 Casambalangan Philippines  0.2
10 Sep 2021 12:00 San Vincente Philippines  0.2
12 Sep 2021 12:00 Guhuai China  0.2
12 Sep 2021 12:00 Langqi China  0.2
12 Sep 2021 12:00 Tantou China  0.2
12 Sep 2021 12:00 Chang-chiang China  0.2
12 Sep 2021 12:00 Yunlong China  0.2
12 Sep 2021 12:00 Chin-feng China  0.2
12 Sep 2021 12:00 Fengwo China  0.2
12 Sep 2021 12:00 Mabi China  0.2
12 Sep 2021 11:00 Feng-kuei-li Taiwan  0.2
12 Sep 2021 11:00 Ma-kung Taiwan  0.2
12 Sep 2021 12:00 Wuqu China  0.2
10 Sep 2021 17:00 Minabul Philippines  0.2
12 Sep 2021 12:00 Qingfeng China  0.2
12 Sep 2021 12:00 Ting-hai China  0.2
12 Sep 2021 12:00 Ta-ch'iu China  0.2
12 Sep 2021 12:00 Cao Yu China  0.2
12 Sep 2021 12:00 Xiahu China  0.2
10 Sep 2021 21:00 Banua Philippines  0.1
12 Sep 2021 12:00 Guanjing China  0.1
12 Sep 2021 12:00 Pingtan China  0.1
12 Sep 2021 12:00 Houtian China  0.1
12 Sep 2021 12:00 Luxia China  0.1
12 Sep 2021 09:00 An-ping Taiwan  0.1
12 Sep 2021 12:00 Huang-ch'i China  0.1
12 Sep 2021 12:00 Houzhai China  0.1
12 Sep 2021 12:00 Anhai China  0.1
12 Sep 2021 12:00 Tung-ch'ung China  0.1
12 Sep 2021 12:00 I-shan China  0.1
12 Sep 2021 12:00 Gexiang China  0.1
12 Sep 2021 12:00 Gongqiancun China  0.1
12 Sep 2021 11:00 Nanao China  0.1
12 Sep 2021 12:00 Chelim China  0.1
12 Sep 2021 12:00 Hua-hsu Taiwan  0.1
12 Sep 2021 12:00 Ch'ang-t'an-wo Taiwan  0.1
12 Sep 2021 12:00 Wai-an Taiwan  0.1
12 Sep 2021 07:00 Chiang-chun-ao Taiwan  0.1
12 Sep 2021 12:00 Ch'ang-an Taiwan  0.1
12 Sep 2021 12:00 P'eng-hu-erh-ts'un Taiwan  0.1
12 Sep 2021 12:00 Da'ao China  0.1
12 Sep 2021 12:00 Sha-fan-chieh China  0.1
12 Sep 2021 12:00 Jinxiang China  0.1
12 Sep 2021 12:00 Beilong China  0.1
12 Sep 2021 12:00 Chien-chiang China  0.1
12 Sep 2021 12:00 Xiaguan China  0.1
12 Sep 2021 07:00 Ch'eng-ch'ien Taiwan  0.1
12 Sep 2021 12:00 Lung-men Taiwan  0.1
12 Sep 2021 12:00 Hanjiang China  0.1
12 Sep 2021 12:00 Changchun China  0.1
12 Sep 2021 12:00 Yacheng China  0.1
12 Sep 2021 12:00 Yung-lung Taiwan  0.1
12 Sep 2021 12:00 Xinan China  0.1
10 Sep 2021 16:00 Cadagatan Philippines  0.1
10 Sep 2021 17:00 Sorongan Philippines  0.1
12 Sep 2021 11:00 Shenao China  0.1
12 Sep 2021 08:00 Raoping China  0.1
12 Sep 2021 12:00 Chu-kao-wan Taiwan  0.1
12 Sep 2021 07:00 Chu-mu-shui Taiwan  0.1
12 Sep 2021 12:00 Chi-pei Taiwan  0.1
12 Sep 2021 12:00 Xiabu China  0.1
12 Sep 2021 12:00 Zhuangyuanqiao China  0.1
12 Sep 2021 12:00 Longwan China  0.1
12 Sep 2021 12:00 Siqianjie China  0.1
12 Sep 2021 12:00 Xiaodoumen China  0.1
12 Sep 2021 12:00 Jiangtan China  0.1
10 Sep 2021 12:00 Buguey Philippines  0.1
10 Sep 2021 12:00 Gonzaga Philippines  0.1
12 Sep 2021 12:00 Chung-ho Taiwan  0.1
12 Sep 2021 12:00 Dituan China  0.1