Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
22 Jul 2021 06 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

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

Meteorological source GFS
Exposed countries Taiwan, China
Exposed population No people in Category 1 or higher
Maximum wind speed 61 km/h
Maximum storm surge 0.6 m (24 Jul 23:15 UTC)
Vulnerability Medium (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
GFS Current 61 km/h 0.6 m 39 mm 0.5
GFS Overall 144 km/h 1.2 m 795 mm 0.5

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

TOP

Wind

144 km/h

Up to 90 thousand can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 22 Jul 2021 06:00 UTC
CategoryCountryPopulation 
Tropical StormTaiwan, China90,925
+
Taiwan90,779 
China146 

See TC classification SSHS


Wind Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert N° Date (UTC) Max Winds (km/h) Pop in Cat. 1 or higher TS Cat. 1 Cat. 2 Cat. 3 Cat. 4 Cat. 5 Countries
GREEN 1 18 Jul 2021 18:00 72 - - - - - - -
GREEN 2 19 Jul 2021 00:00 108 - - - - - - -
GREEN 3 19 Jul 2021 06:00 94 - - - - - - -
GREEN 4 19 Jul 2021 12:00 108 -
- - - - - China
GREEN 5 19 Jul 2021 18:00 112 - - - - - - -
GREEN 6 20 Jul 2021 00:00 144 -
- - - - - China
GREEN 7 20 Jul 2021 06:00 126 -
- - - - - China
GREEN 8 20 Jul 2021 12:00 119 -
- - - - - China
GREEN 9 20 Jul 2021 18:00 65 -
- - - - - China
GREEN 10 21 Jul 2021 00:00 54 - - - - - - -
GREEN 11 21 Jul 2021 06:00 58 - - - - - - -
GREEN 12 21 Jul 2021 12:00 58 - - - - - - -
GREEN 13 21 Jul 2021 18:00 54 - - - - - - -
GREEN 14 22 Jul 2021 00:00 61 -
- - - - - Taiwan
GREEN 15 22 Jul 2021 06:00 68 -
- - - - - Taiwan, China
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 22 Jul 2021 06:00 UTC
LevelCountryPopulation 
250-500 mmLaos, Philippines990,784
+
Laos14,139 
Philippines976,645 
100-250 mmChina, Vietnam, Laos, Thailand, Philippines15,631,071
+
China847,139 
Vietnam80,270 
Laos2,462,306 
Philippines7,344,824 
Thailand4,896,530 
50-100 mmChina, Taiwan, Vietnam, Laos, Philippines, Thailand, Cambodia42,029,903
+
China18,444,080 
Taiwan3,442,545 
Vietnam13,702,573 
Laos540,973 
Philippines3,047,822 
Thailand2,851,424 
Cambodia482 

Rain Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert N° Date (UTC) Max Rainfall (mm) Pop >100mm or higher 50-100 100-250 250-500 500-750 750-1000 >1000 Countries
Blue 1 18 Jul 2021 18:00 142 80 thousand
- - - - Laos, Vietnam, Cambodia
Blue 2 19 Jul 2021 00:00 171 -
- - - - - Laos, Cambodia
Blue 3 19 Jul 2021 06:00 157 -
- - - - - Hong Kong, China
Blue 4 19 Jul 2021 12:00 126 - - - - - - -
Blue 5 19 Jul 2021 18:00 223 -
- - - - - Laos, Vietnam
Blue 6 20 Jul 2021 00:00 221 Few people
- - - - China, Laos, Thailand
Blue 7 20 Jul 2021 06:00 274 170 thousand
- - - - China
Blue 8 20 Jul 2021 12:00 187 440 thousand
- - - - China
Blue 9 20 Jul 2021 18:00 151 790 thousand
- - - - China
Blue 10 21 Jul 2021 00:00 75 -
- - - - - China
Blue 11 21 Jul 2021 06:00 66 -
- - - - - China
Blue 12 21 Jul 2021 12:00 103 Few people
- - - - China, Laos, Thailand
Blue 13 21 Jul 2021 18:00 107 10 thousand
- - - - China, Laos, Thailand
Blue 14 22 Jul 2021 00:00 103 -
- - - - - China
Blue 15 22 Jul 2021 06:00 290 16.6 million
- - - China, Taiwan, Vietnam, Laos, Philippines, Thailand, Cambodia




Impact estimation for the next 72h
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StormSurge

0.6 m

The maximum Storm surge height is  0.6m in Sha-fan-chieh, China. This height is estimated for 24 Jul 2021 23:15 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.

Storm Surge Exposed population - AoIs


Storm Surge Exposed locations

Calculation based on the bulletin of 22 Jul 2021 06:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
24 Jul 2021 23:15 Sha-fan-chieh China  0.6
24 Jul 2021 23:15 Jinxiang China  0.6
24 Jul 2021 23:15 Pucheng China  0.6
23 Jul 2021 10:45 San Shah China  0.5
23 Jul 2021 10:45 Gaoshan China  0.5
23 Jul 2021 10:45 Ta-ch'iu China  0.5
23 Jul 2021 10:45 Beicuo China  0.5
23 Jul 2021 10:45 Guanjing China  0.5
23 Jul 2021 10:45 Cao Yu China  0.5
23 Jul 2021 10:45 Qingfeng China  0.5
23 Jul 2021 10:45 Pingtan China  0.5
24 Jul 2021 22:30 Shacheng China  0.5
24 Jul 2021 22:30 Xiaguan China  0.5
24 Jul 2021 22:45 Huang-ch'i China  0.5
24 Jul 2021 23:15 Yacheng China  0.4
24 Jul 2021 23:15 Sansha China  0.4
24 Jul 2021 23:00 Changchun China  0.4
24 Jul 2021 23:00 Wuqu China  0.4
25 Jul 2021 00:15 Xiahu China  0.4
25 Jul 2021 00:15 Da'ao China  0.4
25 Jul 2021 00:15 Luxia China  0.4
25 Jul 2021 00:15 Ting-hai China  0.4
25 Jul 2021 00:15 Anhai China  0.4
25 Jul 2021 00:15 Tung-ch'ung China  0.4
24 Jul 2021 23:30 Xinan China  0.4
25 Jul 2021 00:15 Bili China  0.4
25 Jul 2021 00:15 Chien-chiang China  0.4
24 Jul 2021 23:45 Ch'ang-t'an-wo Taiwan  0.4
25 Jul 2021 00:15 Langqi China  0.4
25 Jul 2021 00:15 Changmen China  0.4
25 Jul 2021 00:15 Fengwo China  0.4
25 Jul 2021 00:15 Yunlong China  0.4
25 Jul 2021 00:15 Tung-tai China  0.4
25 Jul 2021 00:15 Baisheng China  0.4
25 Jul 2021 00:15 Mabi China  0.4
25 Jul 2021 00:15 Guanban China  0.4
24 Jul 2021 23:30 Guhuai China  0.4
24 Jul 2021 23:30 Chiang-t'ien China  0.4
24 Jul 2021 23:30 Tantou China  0.4
24 Jul 2021 23:30 Chang-chiang China  0.4
24 Jul 2021 23:30 Chin-feng China  0.4
24 Jul 2021 23:30 Wuhang China  0.4
25 Jul 2021 00:00 Houtian China  0.3
24 Jul 2021 23:00 Fuye China  0.3
25 Jul 2021 00:15 Chiang-k'ou China  0.3
25 Jul 2021 00:15 Daitou China  0.3
25 Jul 2021 00:15 Tangbian China  0.3
25 Jul 2021 00:15 Shicheng China  0.3
25 Jul 2021 00:15 Jiangjing China  0.3
25 Jul 2021 00:15 Gangtou China  0.3
24 Jul 2021 23:30 Nanri China  0.3
25 Jul 2021 00:45 Yuxi China  0.3
25 Jul 2021 00:45 Longtian China  0.3
24 Jul 2021 23:30 Wangchuan China  0.3
24 Jul 2021 23:30 Fengting China  0.3
24 Jul 2021 23:30 Dawu China  0.3
24 Jul 2021 23:30 Fengwei China  0.3
24 Jul 2021 23:30 Hsiao-tso China  0.3
24 Jul 2021 23:30 Zhongmen China  0.3
24 Jul 2021 23:00 Ch'i-ting Taiwan  0.2
24 Jul 2021 23:30 Pinghai China  0.2
24 Jul 2021 23:30 Tung-hsiao Taiwan  0.2
24 Jul 2021 23:00 P'u-hsi China  0.2
24 Jul 2021 23:00 P'u-hsi-ch'eng China  0.2
24 Jul 2021 23:00 Meizhou China  0.2
25 Jul 2021 00:30 Hushi China  0.2
24 Jul 2021 23:15 Hai huang Taiwan  0.2
24 Jul 2021 23:15 Yuan-li Taiwan  0.2
25 Jul 2021 00:30 Dongsha China  0.2
25 Jul 2021 00:30 Lingchuan China  0.2
25 Jul 2021 00:15 Shih-shih China  0.2
25 Jul 2021 00:15 Yakou China  0.2
25 Jul 2021 00:15 Yongning China  0.2
25 Jul 2021 00:15 Shihu China  0.2
25 Jul 2021 00:15 Dongyuan China  0.2
25 Jul 2021 00:15 Hsiang-chih China  0.2
25 Jul 2021 00:15 Zhangban China  0.2
25 Jul 2021 00:15 Qian'an China  0.2
25 Jul 2021 00:15 Chongwu China  0.2
24 Jul 2021 23:15 Ching-shui Taiwan  0.2
24 Jul 2021 23:00 Lu-kang Taiwan  0.2
24 Jul 2021 22:30 Sha-shan Taiwan  0.2
24 Jul 2021 22:30 Wang-kung Taiwan  0.2
25 Jul 2021 00:45 Weitou China  0.2
25 Jul 2021 00:45 Chin-ching China  0.2
25 Jul 2021 02:30 Lianhe China  0.2
25 Jul 2021 02:30 Ch'ing-hsu Taiwan  0.2
25 Jul 2021 02:30 Shijing China  0.2
25 Jul 2021 02:30 Chin-men Tao Taiwan  0.2
25 Jul 2021 02:30 Yang-chai Taiwan  0.2
25 Jul 2021 02:30 Anhai China  0.2
25 Jul 2021 02:30 Tung-shih China  0.2
25 Jul 2021 02:30 Chin-men Taiwan  0.2
23 Jul 2021 12:45 Bailong China  0.2
23 Jul 2021 12:45 Beimu China  0.2
23 Jul 2021 12:45 Yong'an China  0.2
23 Jul 2021 12:45 Shankou China  0.2
23 Jul 2021 12:30 Yingluo China  0.2
24 Jul 2021 22:15 San-hsing Taiwan  0.2
24 Jul 2021 22:15 T'ai-hsi Taiwan  0.2
24 Jul 2021 22:30 Chung-ch'i Taiwan  0.2
24 Jul 2021 23:15 Chi-pei Taiwan  0.2
24 Jul 2021 23:15 Ch'ang-an Taiwan  0.2
24 Jul 2021 23:00 Chu-kao-wan Taiwan  0.2
24 Jul 2021 23:00 Ch'eng-ch'ien Taiwan  0.2
24 Jul 2021 23:00 Wai-an Taiwan  0.2
24 Jul 2021 23:00 Feng-kuei-li Taiwan  0.2
24 Jul 2021 23:00 P'eng-hu-erh-ts'un Taiwan  0.2
24 Jul 2021 23:00 Ma-kung Taiwan  0.2
24 Jul 2021 23:00 Lung-men Taiwan  0.2
25 Jul 2021 02:00 Aotou China  0.2
25 Jul 2021 02:00 An-ting Taiwan  0.2
24 Jul 2021 22:45 Sa-ti Taiwan  0.2
24 Jul 2021 22:45 Hai-kou Taiwan  0.2
25 Jul 2021 02:30 Songyu China  0.2
25 Jul 2021 02:30 Hsing-lin China  0.2
25 Jul 2021 02:30 Xucuo China  0.2
25 Jul 2021 02:30 Gulangyu China  0.2
25 Jul 2021 02:30 Xiamen China  0.2
25 Jul 2021 02:30 Chen-hai China  0.2
25 Jul 2021 02:30 Daomei China  0.2
25 Jul 2021 02:30 Dianqian China  0.2
25 Jul 2021 02:30 Jiangtou China  0.2
25 Jul 2021 02:30 Zhenhai China  0.2
25 Jul 2021 02:30 Hecuo China  0.2
25 Jul 2021 02:30 Liuwudian China  0.2
25 Jul 2021 03:45 Fugong China  0.2
25 Jul 2021 03:45 Haicang China  0.2
25 Jul 2021 03:45 Guankou China  0.2
25 Jul 2021 03:45 Gangwei China  0.2
23 Jul 2021 02:30 Ch'i-shui China  0.1
23 Jul 2021 02:30 Haikang China  0.1
24 Jul 2021 23:15 Hsia-lun Taiwan  0.1
24 Jul 2021 23:00 Chu-mu-shui Taiwan  0.1
23 Jul 2021 02:45 Caotan China  0.1
23 Jul 2021 02:15 Liu-sha-ying China  0.1
23 Jul 2021 03:00 Longtousha China  0.1
24 Jul 2021 23:00 Hua-hsu Taiwan  0.1
25 Jul 2021 01:45 Fotan China  0.1
24 Jul 2021 23:15 Hsin-chiang Taiwan  0.1
24 Jul 2021 23:15 Wu-nan Taiwan  0.1
25 Jul 2021 03:00 Chihu China  0.1
24 Jul 2021 23:00 Chiang-chun-ao Taiwan  0.1
25 Jul 2021 02:45 Shentu China  0.1
23 Jul 2021 02:00 Shuiwei China  0.1
22 Jul 2021 13:30 Huangge China  0.1
22 Jul 2021 13:30 Min-chung China  0.1
22 Jul 2021 13:30 Wan-ch'ing-sha China  0.1
22 Jul 2021 13:30 Jiang'ouwei China  0.1
22 Jul 2021 13:30 Cheng'anwei China  0.1
22 Jul 2021 13:30 Fumunchai China  0.1
22 Jul 2021 13:30 Fumuntschai China  0.1
22 Jul 2021 13:30 Baihao China  0.1
22 Jul 2021 13:30 Taiping China  0.1
22 Jul 2021 13:30 Sha-ching China  0.1
22 Jul 2021 13:30 Heping China  0.1
23 Jul 2021 15:00 Yingzai China  0.1
23 Jul 2021 02:00 Liusha China  0.1
23 Jul 2021 02:00 Mai-ch'en-hsu China  0.1
25 Jul 2021 02:45 Jiuzhen China  0.1
25 Jul 2021 02:45 Liu'ao China  0.1
25 Jul 2021 03:00 Hsia-mei China  0.1
22 Jul 2021 12:00 Nanping China  0.1
22 Jul 2021 12:00 Maogang China  0.1
22 Jul 2021 12:00 Macau Macau (China)  0.1
22 Jul 2021 12:00 Taipa Macau (China)  0.1
22 Jul 2021 12:00 Coloane Macau (China)  0.1
22 Jul 2021 12:00 Heung chau China  0.1
22 Jul 2021 14:00 Nantou China  0.1
24 Jul 2021 23:15 Chung-p'ing Taiwan  0.1
24 Jul 2021 23:00 Chang-t'an Taiwan  0.1
22 Jul 2021 17:30 Cuihengcun China  0.1
22 Jul 2021 17:30 Xiazha China  0.1
22 Jul 2021 17:30 Qishan China  0.1
22 Jul 2021 17:30 Ch'i-ao China  0.1
22 Jul 2021 14:45 Dayang China  0.1
22 Jul 2021 14:45 Dalangwan China  0.1
22 Jul 2021 14:45 Guanghai China  0.1
22 Jul 2021 14:45 Tiantou China  0.1
22 Jul 2021 14:45 Tonggu China  0.1
24 Jul 2021 07:00 Hai Phong Vietnam  0.1
24 Jul 2021 07:00 Thuy U Vietnam  0.1
24 Jul 2021 07:00 Dai Loc Vietnam  0.1
24 Jul 2021 07:00 Quang Yen Vietnam  0.1
24 Jul 2021 07:00 Hoang Chau Vietnam  0.1
25 Jul 2021 02:45 Gangkou China  0.1
23 Jul 2021 03:00 Gaode China  0.1
23 Jul 2021 03:00 Guchengling China  0.1
22 Jul 2021 15:15 Chiu-chieh China  0.1
22 Jul 2021 15:15 Shekou China  0.1
22 Jul 2021 15:15 Castle Peak New Town Hong Kong (China)  0.1
22 Jul 2021 15:15 Tuen Mun Hong Kong (China)  0.1
23 Jul 2021 02:00 Beihai China  0.1
22 Jul 2021 11:45 Hsia-yung China  0.1
22 Jul 2021 11:45 Renshan China  0.1
22 Jul 2021 11:45 Jen-shan China  0.1
22 Jul 2021 11:45 Fanhe China  0.1
22 Jul 2021 11:45 Pinghai China  0.1
23 Jul 2021 15:45 Chia-ho-ts'un Taiwan  0.1
23 Jul 2021 15:45 Fang-shan Taiwan  0.1
23 Jul 2021 15:45 Feng-chiang Taiwan  0.1
23 Jul 2021 15:45 She-liao Taiwan  0.1
23 Jul 2021 15:45 Che-cheng Taiwan  0.1
24 Jul 2021 23:15 Fu-hsing Taiwan  0.1
24 Jul 2021 23:15 Pu-tai Taiwan  0.1
23 Jul 2021 16:15 Liu-chiu Hsu Taiwan  0.1
25 Jul 2021 06:00 Xindian China  0.1
25 Jul 2021 06:00 Ma-chiang China  0.1
23 Jul 2021 09:15 Longmen China  0.1
23 Jul 2021 09:15 Dafanpo China  0.1
23 Jul 2021 09:15 Hsi-niu-chiao China  0.1
23 Jul 2021 09:15 Pingshan China  0.1
22 Jul 2021 11:00 Houmen China  0.1
22 Jul 2021 11:00 Magong China  0.1
22 Jul 2021 11:00 Jizhongtuo China  0.1
23 Jul 2021 15:45 Maobitou Taiwan  0.1
23 Jul 2021 15:45 Ta-kuang Taiwan  0.1
22 Jul 2021 12:15 Shanwei China  0.1
22 Jul 2021 12:15 Jiesheng China  0.1
24 Jul 2021 07:15 Gia Luan Vietnam  0.1
22 Jul 2021 11:00 Dapeng China  0.1
22 Jul 2021 11:00 Taipang China  0.1
22 Jul 2021 11:00 Shagang China  0.1
22 Jul 2021 11:00 Aotou China  0.1
22 Jul 2021 11:00 Luzui China  0.1
22 Jul 2021 13:30 Chixi China  0.1
22 Jul 2021 13:30 Mashan China  0.1
22 Jul 2021 13:30 Pingsha China  0.1
23 Jul 2021 15:15 T'ien-ch'ien-ts'o Taiwan  0.1
23 Jul 2021 15:15 Shui-ti-liao Taiwan  0.1
22 Jul 2021 13:15 Baijiao China  0.1
22 Jul 2021 13:15 San-tsao China  0.1
24 Jul 2021 23:15 Yung-lung Taiwan  0.1
24 Jul 2021 12:30 Yuen Long Hong Kong (China)  0.1
24 Jul 2021 12:30 Tai Po Hong Kong (China)  0.1
24 Jul 2021 12:30 Tai Po Industrial Estate Hong Kong (China)  0.1
24 Jul 2021 12:30 Fung Yuen Hong Kong (China)  0.1
24 Jul 2021 12:30 Dabu Hong Kong (China)  0.1
24 Jul 2021 12:30 Sha Tau Kok China  0.1
24 Jul 2021 12:30 Cheung Kang Hong Kong (China)  0.1
24 Jul 2021 12:30 Imtin China  0.1
24 Jul 2021 12:30 Cheung Wo Hong Kong (China)  0.1
24 Jul 2021 12:30 Pak Sha Au Hong Kong (China)  0.1
24 Jul 2021 12:30 Long Ke Hong Kong (China)  0.1
24 Jul 2021 12:30 Khitschhung China  0.1
24 Jul 2021 07:30 Ubon Bi Vietnam  0.1
24 Jul 2021 07:30 Dong Vang Vietnam  0.1
24 Jul 2021 12:45 Cheung Sha Wan Hong Kong (China)  0.1
24 Jul 2021 12:45 Tsz Wa Chan Hong Kong (China)  0.1
24 Jul 2021 12:45 Yau Ma Po Hong Kong (China)  0.1
24 Jul 2021 12:45 Sai Kung Hong Kong (China)  0.1
24 Jul 2021 08:30 Luc Linh Vietnam  0.1
24 Jul 2021 08:30 Nam Dong Vietnam  0.1
23 Jul 2021 01:15 Maichen China  0.1
25 Jul 2021 02:45 Guleitou China  0.1
22 Jul 2021 10:30 Beidou China  0.1
22 Jul 2021 10:30 Chen-hai China  0.1
22 Jul 2021 10:30 Shen-ching China  0.1
22 Jul 2021 13:45 Shalan China  0.1
23 Jul 2021 07:15 Mong Cai Vietnam  0.1
23 Jul 2021 07:15 Jiangpingxu China  0.1
23 Jul 2021 07:15 Jiangping China  0.1
23 Jul 2021 07:15 Wanwei China  0.1
23 Jul 2021 15:30 Hou-ta-ts'o Taiwan  0.1
23 Jul 2021 15:30 Tung-chiang Taiwan  0.1
23 Jul 2021 15:30 Wu-lung Taiwan  0.1
23 Jul 2021 02:45 Paipu China  0.1
23 Jul 2021 02:45 Baimajing China  0.1
23 Jul 2021 02:45 Hsin-ying China  0.1
23 Jul 2021 02:45 Eman China  0.1
23 Jul 2021 02:45 Taan China  0.1
23 Jul 2021 02:45 Hsin-chou China  0.1