Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China

Impact

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

Meteorological source HWRF
Exposed countries China, Vietnam, Paracel Islands
Exposed population No people in Category 1 or higher
Maximum wind speed 61 km/h
Maximum storm surge 0.5 m (23 Jul 12:15 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
HWRF Current 61 km/h 0.5 m 285 mm 0.5
HWRF Overall 137 km/h 1.2 m 746 mm 0.5

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

Wind

137 km/h

Up to 510 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 00:00 UTC
CategoryCountryPopulation 
Tropical StormChina, Vietnam, Paracel Islands511,072
+
China509,987 
Vietnam1,049 
Paracel Islands36 

See TC classification SSHS


Wind Impact Timeline

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


Alert 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 68 - - - - - - -
GREEN 2 19 Jul 2021 00:00 86 -
- - - - - China
GREEN 3 19 Jul 2021 06:00 101 -
- - - - - China
GREEN 4 19 Jul 2021 12:00 119 -
- - - - - China
GREEN 5 19 Jul 2021 18:00 122 -
- - - - - China
GREEN 6 20 Jul 2021 00:00 130 -
- - - - - China
GREEN 7 20 Jul 2021 06:00 137 Few people
- - - - China
GREEN 8 20 Jul 2021 12:00 137 40 thousand
- - - - China
GREEN 9 20 Jul 2021 18:00 104 -
- - - - - China
GREEN 10 21 Jul 2021 00:00 61 -
- - - - - China
GREEN 11 21 Jul 2021 06:00 43 - - - - - - -
GREEN 12 21 Jul 2021 12:00 47 - - - - - - -
GREEN 13 21 Jul 2021 18:00 58 - - - - - - -
GREEN 14 22 Jul 2021 00:00 101 -
- - - - - China, Vietnam, Paracel Islands
Download:





Impact estimation for the next 72h




Rain exposed population - AoIs

Estimations based on the bulletin of 22 Jul 2021 00:00 UTC
LevelCountryPopulation 
500-750 mmChina1,141 
250-500 mmChina, Vietnam, Laos147,802
+
China143,458 
Vietnam963 
Laos3,380 
100-250 mmChina, Vietnam, Laos3,437,259
+
China3,309,079 
Vietnam44,810 
Laos83,369 
50-100 mmChina, Vietnam, Laos12,458,596
+
China4,975,678 
Vietnam7,214,417 
Laos268,500 

Rain Impact Timeline

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


Alert 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 18:00 150 -
- - - - - China, Hong Kong
Blue 2 19 Jul 2021 00:00 178 -
- - - - - China, Macao
Blue 3 19 Jul 2021 06:00 138 -
- - - - - China
Blue 4 19 Jul 2021 12:00 274 -
- - - - - China
Blue 5 19 Jul 2021 18:00 277 5 thousand
- - - - China
Blue 6 20 Jul 2021 00:00 290 550 thousand
- - - - China, Macao
Blue 7 20 Jul 2021 06:00 272 Few people
- - - - China, Hong Kong
Blue 8 20 Jul 2021 12:00 189 440 thousand
- - - - China
Blue 9 20 Jul 2021 18:00 228 630 thousand
- - - - China
Blue 10 21 Jul 2021 00:00 328 170 thousand
- - - - China, Vietnam
Blue 11 21 Jul 2021 06:00 111 3 thousand
- - - - China
Blue 12 21 Jul 2021 12:00 86 -
- - - - - China
Blue 13 21 Jul 2021 18:00 175 230 thousand
- - - - China
Blue 14 22 Jul 2021 00:00 711 3.6 million
- - China, Vietnam, Laos




Impact estimation for the next 72h

StormSurge

0.5 m

The maximum Storm surge height is  0.5m in San Shah, China. This height is estimated for 23 Jul 2021 12:15 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 00:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
23 Jul 2021 12:15 San Shah China  0.5
23 Jul 2021 12:15 Gaoshan China  0.5
23 Jul 2021 12:15 Ta-ch'iu China  0.5
23 Jul 2021 12:15 Beicuo China  0.5
23 Jul 2021 12:15 Guanjing China  0.5
23 Jul 2021 12:15 Cao Yu China  0.5
23 Jul 2021 12:15 Qingfeng China  0.5
23 Jul 2021 12:15 Pingtan China  0.5
23 Jul 2021 12:00 Houtian China  0.3
25 Jul 2021 00:00 Sha-fan-chieh China  0.3
25 Jul 2021 00:00 Jinxiang China  0.3
25 Jul 2021 00:00 Pucheng China  0.3
25 Jul 2021 00:00 Shacheng China  0.3
25 Jul 2021 00:00 Xiaguan China  0.3
25 Jul 2021 00:00 Huang-ch'i China  0.2
22 Jul 2021 00:00 Bailong China  0.2
22 Jul 2021 00:00 Beimu China  0.2
22 Jul 2021 00:00 Yong'an China  0.2
22 Jul 2021 00:00 Shankou China  0.2
22 Jul 2021 00:00 Yingluo China  0.2
25 Jul 2021 00:00 Yacheng China  0.2
25 Jul 2021 00:00 Sansha China  0.2
25 Jul 2021 00:00 Xiahu China  0.2
25 Jul 2021 00:00 Da'ao China  0.2
25 Jul 2021 00:00 Changchun China  0.2
25 Jul 2021 00:00 Luxia China  0.2
25 Jul 2021 00:00 Wuqu China  0.2
23 Jul 2021 15:45 Taiping China  0.2
23 Jul 2021 15:45 Xianmai China  0.2
23 Jul 2021 15:45 Longshe China  0.2
23 Jul 2021 15:45 Dongli China  0.2
22 Jul 2021 10:00 Xiuying China  0.2
22 Jul 2021 10:00 Haikou China  0.2
22 Jul 2021 10:00 Puqian China  0.2
25 Jul 2021 00:00 Bili China  0.2
25 Jul 2021 00:00 Chien-chiang China  0.2
25 Jul 2021 00:00 Ting-hai China  0.2
25 Jul 2021 00:00 Anhai China  0.2
25 Jul 2021 00:00 Tung-ch'ung China  0.2
25 Jul 2021 00:00 Xinan China  0.2
23 Jul 2021 15:45 Tung-li China  0.2
23 Jul 2021 15:45 Dongshan China  0.2
22 Jul 2021 00:00 Yuen Long Hong Kong (China)  0.2
22 Jul 2021 00:00 Tai Po Hong Kong (China)  0.2
22 Jul 2021 00:00 Tai Po Industrial Estate Hong Kong (China)  0.2
22 Jul 2021 00:00 Fung Yuen Hong Kong (China)  0.2
22 Jul 2021 00:00 Dabu Hong Kong (China)  0.2
22 Jul 2021 00:00 Sha Tau Kok China  0.2
22 Jul 2021 00:00 Cheung Kang Hong Kong (China)  0.2
22 Jul 2021 00:00 Imtin China  0.2
22 Jul 2021 00:00 Cheung Wo Hong Kong (China)  0.2
22 Jul 2021 00:00 Pak Sha Au Hong Kong (China)  0.2
22 Jul 2021 00:00 Long Ke Hong Kong (China)  0.2
22 Jul 2021 00:00 Khitschhung China  0.2
22 Jul 2021 04:15 Caotan China  0.2
22 Jul 2021 00:00 Cheung Sha Wan Hong Kong (China)  0.2
22 Jul 2021 00:00 Tsz Wa Chan Hong Kong (China)  0.2
22 Jul 2021 00:00 Yau Ma Po Hong Kong (China)  0.2
22 Jul 2021 00:00 Sai Kung Hong Kong (China)  0.2
25 Jul 2021 00:00 Ch'ang-t'an-wo Taiwan  0.2
23 Jul 2021 07:30 Gancheng China  0.2
23 Jul 2021 07:30 Banqiao China  0.2
23 Jul 2021 07:30 Longyou China  0.2
23 Jul 2021 07:30 Lingtou China  0.2
22 Jul 2021 09:45 Boshegang China  0.2
22 Jul 2021 10:00 Haian China  0.2
22 Jul 2021 06:45 Longtousha China  0.2
22 Jul 2021 06:45 Yingzai China  0.2
23 Jul 2021 07:30 Basuo China  0.2
23 Jul 2021 07:30 Duntou China  0.2
22 Jul 2021 10:00 Maichen China  0.2
23 Jul 2021 07:15 Beili China  0.2
23 Jul 2021 07:15 Changhua China  0.2
22 Jul 2021 10:00 Longtang China  0.2
22 Jul 2021 00:00 Dapeng China  0.2
22 Jul 2021 00:00 Taipang China  0.2
22 Jul 2021 00:00 Shagang China  0.2
22 Jul 2021 10:15 Qiaotou China  0.2
22 Jul 2021 09:45 Shuiwei China  0.2
22 Jul 2021 09:45 Mai-ch'en-hsu China  0.2
22 Jul 2021 00:00 Cuihengcun China  0.2
22 Jul 2021 00:00 Min-chung China  0.2
22 Jul 2021 00:00 Xiazha China  0.2
22 Jul 2021 00:00 Qishan China  0.2
22 Jul 2021 00:00 Cheng'anwei China  0.2
22 Jul 2021 00:00 Ch'i-ao China  0.2
22 Jul 2021 00:00 Wan-ch'ing-sha China  0.2
22 Jul 2021 09:45 Qianshan China  0.2
22 Jul 2021 13:15 Shuidong China  0.2
22 Jul 2021 13:15 Ch'i-ching China  0.2
22 Jul 2021 13:15 Dianbai China  0.2
22 Jul 2021 13:15 Danchang China  0.2
22 Jul 2021 13:15 Magang China  0.2
22 Jul 2021 06:45 Paipu China  0.2
22 Jul 2021 06:45 Baimajing China  0.2
22 Jul 2021 06:45 Hsin-ying China  0.2
22 Jul 2021 06:45 Eman China  0.2
22 Jul 2021 06:45 Taan China  0.2
22 Jul 2021 06:45 Hsin-chou China  0.2
25 Jul 2021 00:00 Tung-tai China  0.2
25 Jul 2021 00:00 Baisheng China  0.2
25 Jul 2021 00:00 Mabi China  0.2
25 Jul 2021 00:00 Guanban China  0.2
22 Jul 2021 00:00 Huangge China  0.2
22 Jul 2021 00:00 Jiang'ouwei China  0.2
22 Jul 2021 00:00 Fumunchai China  0.2
22 Jul 2021 00:00 Fumuntschai China  0.2
22 Jul 2021 00:00 Baihao China  0.2
22 Jul 2021 00:00 Taiping China  0.2
22 Jul 2021 00:00 Sha-ching China  0.2
22 Jul 2021 00:00 Heping China  0.2
22 Jul 2021 12:15 Huangpo China  0.2
22 Jul 2021 12:15 Chiu-wu-ch'uan China  0.2
22 Jul 2021 12:15 Meilu China  0.2
22 Jul 2021 12:15 Hai-lu China  0.2
22 Jul 2021 13:45 Zhanjiang China  0.2
22 Jul 2021 13:45 Ma-hsieh China  0.2
22 Jul 2021 13:45 Dongjian China  0.2
22 Jul 2021 13:45 Badongxu China  0.2
22 Jul 2021 13:45 Houhu China  0.2
22 Jul 2021 13:45 Bengtang China  0.2
22 Jul 2021 13:45 Houhai China  0.2
22 Jul 2021 13:45 Baisha China  0.2
22 Jul 2021 13:45 Shaoyao China  0.2
22 Jul 2021 13:45 Xingyou China  0.2
22 Jul 2021 13:45 Huangwu China  0.2
22 Jul 2021 13:45 Doulongcun China  0.2
22 Jul 2021 00:00 Aotou China  0.2
22 Jul 2021 12:30 Diancheng China  0.2
22 Jul 2021 09:30 Liu-sha-ying China  0.2
22 Jul 2021 09:30 Liusha China  0.2
25 Jul 2021 00:00 Langqi China  0.2
25 Jul 2021 00:00 Changmen China  0.2
25 Jul 2021 00:00 Fengwo China  0.2
25 Jul 2021 00:00 Yunlong China  0.2
22 Jul 2021 12:30 Rudong China  0.2
25 Jul 2021 00:00 Chin-feng China  0.1
25 Jul 2021 00:00 Wuhang China  0.1
23 Jul 2021 07:15 Foluo China  0.1
22 Jul 2021 05:30 Luewei China  0.1
22 Jul 2021 05:30 Shalan China  0.1
22 Jul 2021 05:30 Shadi China  0.1
22 Jul 2021 05:30 Dalangwan China  0.1
25 Jul 2021 00:00 Tantou China  0.1
22 Jul 2021 12:30 Potou China  0.1
22 Jul 2021 05:00 Dayang China  0.1
22 Jul 2021 05:00 Guanghai China  0.1
22 Jul 2021 02:15 Nanping China  0.1
22 Jul 2021 02:15 Maogang China  0.1
22 Jul 2021 02:15 Macau Macau (China)  0.1
22 Jul 2021 02:15 Taipa Macau (China)  0.1
22 Jul 2021 02:15 Coloane Macau (China)  0.1
22 Jul 2021 02:15 Heung chau China  0.1
22 Jul 2021 00:00 Nantou China  0.1
22 Jul 2021 00:30 Luzui China  0.1
22 Jul 2021 03:00 Ch'i-shui China  0.1
22 Jul 2021 03:00 Haikang China  0.1
22 Jul 2021 02:45 Chiu-chieh China  0.1
22 Jul 2021 02:45 Shekou China  0.1
24 Jul 2021 23:00 Chiang-t'ien China  0.1
24 Jul 2021 23:00 Chang-chiang China  0.1
22 Jul 2021 02:15 Castle Peak New Town Hong Kong (China)  0.1
22 Jul 2021 02:15 Tuen Mun Hong Kong (China)  0.1
22 Jul 2021 13:45 Jiangcheng China  0.1
22 Jul 2021 13:45 Baipu China  0.1
22 Jul 2021 13:45 Dagou China  0.1
22 Jul 2021 13:45 Hsin-chou China  0.1
22 Jul 2021 05:30 Tiantou China  0.1
22 Jul 2021 05:30 Tonggu China  0.1
22 Jul 2021 14:00 Pinggang China  0.1
24 Jul 2021 22:45 Guhuai China  0.1
22 Jul 2021 03:00 Baijiao China  0.1
22 Jul 2021 03:00 San-tsao China  0.1
22 Jul 2021 03:45 Jinhe China  0.1
22 Jul 2021 03:45 Wai-lo China  0.1
22 Jul 2021 04:00 Beidou China  0.1
22 Jul 2021 04:00 Chen-hai China  0.1
22 Jul 2021 04:00 Shen-ching China  0.1
22 Jul 2021 15:15 Chengcun China  0.1
22 Jul 2021 15:15 Santouzui China  0.1
22 Jul 2021 15:15 Hsi-t'ou China  0.1
22 Jul 2021 15:15 Lengzilin China  0.1
22 Jul 2021 12:45 Shangyang China  0.1
24 Jul 2021 22:30 Yuxi China  0.1
24 Jul 2021 22:30 Tangbian China  0.1
24 Jul 2021 22:30 Jiangjing China  0.1
24 Jul 2021 22:30 Longtian China  0.1
24 Jul 2021 22:30 Gangtou China  0.1
22 Jul 2021 05:15 Doushan China  0.1
22 Jul 2021 05:15 Chixi China  0.1
22 Jul 2021 04:45 Hsi-ch'ang-hsu China  0.1
22 Jul 2021 04:45 Hsi-ch'ang China  0.1
22 Jul 2021 04:45 Shagang China  0.1
22 Jul 2021 04:45 Beihai China  0.1
22 Jul 2021 04:45 Dangjiang China  0.1
22 Jul 2021 04:45 Gaode China  0.1
22 Jul 2021 04:45 Guchengling China  0.1
22 Jul 2021 04:45 Qianjiang China  0.1
24 Jul 2021 22:30 Shicheng China  0.1
23 Jul 2021 14:15 Nayan China  0.1
22 Jul 2021 13:45 Pingsha China  0.1
22 Jul 2021 02:15 Fan Kwai Tong Hong Kong (China)  0.1
24 Jul 2021 22:30 Chiang-k'ou China  0.1
24 Jul 2021 22:30 Daitou China  0.1
22 Jul 2021 01:45 Lajiwei China  0.1
24 Jul 2021 21:45 Wangchuan China  0.1
24 Jul 2021 21:45 Fengting China  0.1
24 Jul 2021 21:45 Dawu China  0.1
24 Jul 2021 21:45 Fengwei China  0.1
24 Jul 2021 21:45 Hsiao-tso China  0.1
24 Jul 2021 21:45 Zhongmen China  0.1
22 Jul 2021 01:30 Tai Long Wan Hong Kong (China)  0.1
22 Jul 2021 01:30 Lau Fau Sha Hong Kong (China)  0.1
22 Jul 2021 02:45 Ngau Kwu Long Hong Kong (China)  0.1
24 Jul 2021 22:30 Nanri China  0.1
24 Jul 2021 22:30 Fuye China  0.1
22 Jul 2021 10:45 Ham Tin Hong Kong (China)  0.1
22 Jul 2021 10:15 Xinxing China  0.1
22 Jul 2021 01:30 Guangcun China  0.1
22 Jul 2021 13:00 Mashan China  0.1
22 Jul 2021 01:45 Xiaolin China  0.1
22 Jul 2021 10:15 Yuen Long Hong Kong (China)  0.1
22 Jul 2021 10:15 Sz Pak Hong Kong (China)  0.1
24 Jul 2021 22:00 P'u-hsi China  0.1
24 Jul 2021 22:00 P'u-hsi-ch'eng China  0.1
24 Jul 2021 22:00 Meizhou China  0.1
22 Jul 2021 13:45 Meige China  0.1
22 Jul 2021 13:45 Doumen China  0.1
22 Jul 2021 22:45 Gongche China  0.1
22 Jul 2021 22:45 Maoling China  0.1
22 Jul 2021 22:45 Kangxiling China  0.1
22 Jul 2021 22:45 Longmen China  0.1
22 Jul 2021 22:45 Jiuya China  0.1
22 Jul 2021 22:45 Dafanpo China  0.1
22 Jul 2021 22:45 Pingshan China  0.1
22 Jul 2021 02:30 Wanshan China  0.1
23 Jul 2021 22:45 Hai huang Taiwan  0.1
23 Jul 2021 22:45 Yuan-li Taiwan  0.1
23 Jul 2021 22:45 Tung-hsiao Taiwan  0.1
23 Jul 2021 22:45 Ch'i-ting Taiwan  0.1
23 Jul 2021 22:30 Ching-shui Taiwan  0.1
24 Jul 2021 22:30 Dongsha China  0.1
24 Jul 2021 22:30 Lingchuan China  0.1
24 Jul 2021 22:30 Hushi China  0.1
24 Jul 2021 22:00 Lianhe China  0.1
24 Jul 2021 22:00 Ch'ing-hsu Taiwan  0.1
24 Jul 2021 22:00 Shijing China  0.1
24 Jul 2021 22:00 Chin-men Tao Taiwan  0.1
24 Jul 2021 22:00 Yang-chai Taiwan  0.1
24 Jul 2021 22:00 Anhai China  0.1
24 Jul 2021 22:00 Tung-shih China  0.1
24 Jul 2021 22:00 Weitou China  0.1
24 Jul 2021 22:00 Chin-ching China  0.1
23 Jul 2021 22:00 Lu-kang Taiwan  0.1
22 Jul 2021 04:00 Houmen China  0.1
22 Jul 2021 05:15 Huangchong China  0.1
22 Jul 2021 05:15 Mei-ko China  0.1
22 Jul 2021 10:30 Hsia-yung China  0.1
22 Jul 2021 10:30 Renshan China  0.1
22 Jul 2021 10:30 Jen-shan China  0.1
22 Jul 2021 10:30 Fanhe China  0.1
22 Jul 2021 10:30 Pinghai China  0.1
22 Jul 2021 04:45 Ching-an China  0.1
24 Jul 2021 21:45 Pinghai China  0.1
22 Jul 2021 03:00 Mong Cai Vietnam  0.1
22 Jul 2021 03:00 Jiangpingxu China  0.1
22 Jul 2021 03:00 Jiangping China  0.1
22 Jul 2021 03:00 Wanwei China  0.1
22 Jul 2021 05:30 Yandun China  0.1
22 Jul 2021 05:30 Huiwen China  0.1
23 Jul 2021 22:00 Sha-shan Taiwan  0.1
23 Jul 2021 22:00 Wang-kung Taiwan  0.1
24 Jul 2021 22:00 Chin-men Taiwan  0.1
22 Jul 2021 03:45 Jiesheng China  0.1
22 Jul 2021 03:45 Tianqian China  0.1
22 Jul 2021 03:45 Zhelang China  0.1
22 Jul 2021 01:30 Nam Wan Hong Kong (China)  0.1
22 Jul 2021 01:30 Hoi Pa Hong Kong (China)  0.1
22 Jul 2021 01:30 Lo Tik Wan Hong Kong (China)  0.1
22 Jul 2021 01:30 Tsuen Wan Hong Kong (China)  0.1
22 Jul 2021 01:30 Lo So Shing Hong Kong (China)  0.1
22 Jul 2021 01:30 Ha Kwai Chung Hong Kong (China)  0.1
22 Jul 2021 01:30 Pok Fu Lam Hong Kong (China)  0.1
22 Jul 2021 01:30 Wa Fu Estate Hong Kong (China)  0.1
22 Jul 2021 01:30 Kennedy Town Hong Kong (China)  0.1
22 Jul 2021 01:30 Aberdeen Hong Kong (China)  0.1
22 Jul 2021 01:30 Won Hang Hong Kong (China)  0.1
22 Jul 2021 01:30 Tain Sha Tsui Hong Kong (China)  0.1
22 Jul 2021 01:30 Central Hong Kong (China)  0.1
22 Jul 2021 01:30 Kowloon Hong Kong (China)  0.1
22 Jul 2021 01:30 Wan Chai Hong Kong (China)  0.1
22 Jul 2021 01:30 Chung Hom Kok Hong Kong (China)  0.1
22 Jul 2021 01:30 North Point Hong Kong (China)  0.1
22 Jul 2021 01:30 Chek Chue Hong Kong (China)  0.1
22 Jul 2021 01:30 Crocodile Hill Hong Kong (China)  0.1
22 Jul 2021 03:45 Magong China  0.1
22 Jul 2021 03:45 Jizhongtuo China  0.1