Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
22 Jul 2021 12 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 HWRF
Exposed countries Vietnam, China, Laos
Exposed population No people in Category 1 or higher
Maximum wind speed 58 km/h
Maximum storm surge 0.5 m (23 Jul 11:15 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 58 km/h 0.5 m 139 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)

TOP

Wind

137 km/h

Up to 120 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 12:00 UTC
CategoryCountryPopulation 
Tropical StormVietnam, China, Laos121,036
+
Vietnam72,537 
China48,438 
Laos60 

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 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 61 - - - - - - -
GREEN 15 22 Jul 2021 06:00 58 - - - - - - -
GREEN 16 22 Jul 2021 12:00 101 -
- - - - - Vietnam, China, Laos
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 22 Jul 2021 12:00 UTC
LevelCountryPopulation 
500-750 mmChina, Laos488
+
China82 
Laos406 
250-500 mmChina, Vietnam, Laos52,601
+
Vietnam760 
China15,729 
Laos36,111 
100-250 mmChina, Vietnam, Laos6,435,032
+
Vietnam4,768,804 
China1,154,397 
Laos511,830 
50-100 mmVietnam, China, Laos, Thailand, Cambodia11,260,373
+
Vietnam9,125,032 
China1,481,967 
Laos590,570 
Thailand62,449 
Cambodia353 

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 18:00 150 -
- - - - - 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 00:00 285 9 thousand
- - - - China
Blue 15 22 Jul 2021 06:00 146 2 thousand
- - - - China, Vietnam
Blue 16 22 Jul 2021 12:00 846 6.5 million
- - Vietnam, China, Laos, Thailand, Cambodia




Impact estimation for the next 72h
TOP

StormSurge

0.5 m

The maximum Storm surge height is  0.5m in San Shah, China. This height is estimated for 23 Jul 2021 11:15 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 12:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
23 Jul 2021 11:15 San Shah China  0.5
23 Jul 2021 11:15 Gaoshan China  0.5
23 Jul 2021 11:15 Ta-ch'iu China  0.5
23 Jul 2021 11:15 Beicuo China  0.5
23 Jul 2021 11:15 Guanjing China  0.5
23 Jul 2021 11:15 Cao Yu China  0.5
23 Jul 2021 11:15 Qingfeng China  0.5
23 Jul 2021 11:15 Pingtan China  0.5
23 Jul 2021 12:15 Houtian China  0.3
23 Jul 2021 04:00 Bailong China  0.2
23 Jul 2021 04:00 Beimu China  0.2
23 Jul 2021 04:00 Yong'an China  0.2
23 Jul 2021 04:00 Shankou China  0.2
23 Jul 2021 03:45 Yingluo China  0.2
23 Jul 2021 00:30 Paipu China  0.2
23 Jul 2021 00:30 Baimajing China  0.2
23 Jul 2021 00:30 Hsin-ying China  0.2
23 Jul 2021 00:30 Eman China  0.2
23 Jul 2021 00:30 Taan China  0.2
23 Jul 2021 00:30 Hsin-chou China  0.2
23 Jul 2021 01:00 Ch'i-shui China  0.2
23 Jul 2021 01:00 Haikang China  0.2
23 Jul 2021 01:00 Liu-sha-ying China  0.2
23 Jul 2021 01:45 Caotan China  0.2
25 Jul 2021 02:30 Xiahu China  0.2
25 Jul 2021 02:30 Da'ao China  0.2
25 Jul 2021 02:30 Changchun China  0.2
25 Jul 2021 02:30 Luxia China  0.2
25 Jul 2021 03:00 Sha-fan-chieh China  0.2
25 Jul 2021 03:00 Jinxiang China  0.2
23 Jul 2021 02:00 Longtousha China  0.2
25 Jul 2021 06:15 Taiping China  0.2
25 Jul 2021 06:15 Xianmai China  0.2
25 Jul 2021 06:15 Longshe China  0.2
25 Jul 2021 06:15 Dongli China  0.2
25 Jul 2021 06:15 Tung-li China  0.2
25 Jul 2021 06:15 Dongshan China  0.2
25 Jul 2021 02:45 Pucheng China  0.2
23 Jul 2021 00:45 Shuiwei China  0.2
25 Jul 2021 02:45 Shacheng China  0.2
25 Jul 2021 02:45 Xiaguan China  0.2
25 Jul 2021 02:45 Huang-ch'i China  0.2
23 Jul 2021 00:45 Liusha China  0.2
23 Jul 2021 00:45 Mai-ch'en-hsu China  0.2
25 Jul 2021 02:15 Yacheng China  0.2
25 Jul 2021 02:15 Sansha China  0.2
25 Jul 2021 02:30 Tung-ch'ung China  0.2
25 Jul 2021 02:30 Xinan China  0.2
22 Jul 2021 13:45 Huangge China  0.2
22 Jul 2021 13:45 Min-chung China  0.2
22 Jul 2021 13:45 Wan-ch'ing-sha China  0.2
22 Jul 2021 13:45 Jiang'ouwei China  0.2
22 Jul 2021 13:45 Cheng'anwei China  0.2
22 Jul 2021 13:45 Fumunchai China  0.2
22 Jul 2021 13:45 Fumuntschai China  0.2
22 Jul 2021 13:45 Baihao China  0.2
22 Jul 2021 13:45 Taiping China  0.2
22 Jul 2021 13:45 Sha-ching China  0.2
22 Jul 2021 13:45 Heping China  0.2
25 Jul 2021 02:30 Anhai China  0.2
25 Jul 2021 03:00 Bili China  0.2
25 Jul 2021 03:00 Chien-chiang China  0.2
25 Jul 2021 03:00 Ting-hai China  0.2
25 Jul 2021 02:00 Wuqu China  0.2
23 Jul 2021 03:30 Yingzai China  0.2
23 Jul 2021 01:00 Gaode China  0.1
23 Jul 2021 01:00 Guchengling China  0.1
22 Jul 2021 22:00 Mong Cai Vietnam  0.1
22 Jul 2021 22:00 Jiangpingxu China  0.1
22 Jul 2021 22:00 Jiangping China  0.1
22 Jul 2021 22:00 Wanwei China  0.1
25 Jul 2021 02:45 Ch'ang-t'an-wo Taiwan  0.1
25 Jul 2021 02:30 Tung-tai China  0.1
25 Jul 2021 02:30 Baisheng China  0.1
25 Jul 2021 02:30 Mabi China  0.1
25 Jul 2021 02:30 Guanban China  0.1
25 Jul 2021 08:00 Wangchuan China  0.1
25 Jul 2021 08:00 Fengting China  0.1
25 Jul 2021 08:00 Dawu China  0.1
25 Jul 2021 08:00 Fengwei China  0.1
25 Jul 2021 08:00 Hsiao-tso China  0.1
25 Jul 2021 08:00 Zhongmen China  0.1
23 Jul 2021 01:15 Beihai China  0.1
25 Jul 2021 02:45 Langqi China  0.1
25 Jul 2021 02:45 Changmen China  0.1
25 Jul 2021 02:45 Fengwo China  0.1
25 Jul 2021 02:45 Yunlong China  0.1
23 Jul 2021 01:45 Guangcun China  0.1
23 Jul 2021 01:45 Xinxing China  0.1
22 Jul 2021 21:45 Bailong China  0.1
22 Jul 2021 21:45 Jiangshan China  0.1
25 Jul 2021 04:30 Dongjian China  0.1
25 Jul 2021 04:30 Houhu China  0.1
25 Jul 2021 04:30 Bengtang China  0.1
25 Jul 2021 04:30 Houhai China  0.1
25 Jul 2021 02:45 Tantou China  0.1
22 Jul 2021 22:30 Maichen China  0.1
25 Jul 2021 08:00 P'u-hsi China  0.1
25 Jul 2021 08:00 P'u-hsi-ch'eng China  0.1
25 Jul 2021 08:00 Meizhou China  0.1
25 Jul 2021 02:45 Chin-feng China  0.1
25 Jul 2021 02:45 Wuhang China  0.1
22 Jul 2021 22:30 Qiaotou China  0.1
22 Jul 2021 23:30 Guanjing China  0.1
22 Jul 2021 23:30 Hsi-ch'ang-hsu China  0.1
22 Jul 2021 23:30 Hsi-ch'ang China  0.1
22 Jul 2021 23:30 Shagang China  0.1
22 Jul 2021 22:30 Xiuying China  0.1
22 Jul 2021 22:30 Haikou China  0.1
22 Jul 2021 23:30 Dangjiang China  0.1
22 Jul 2021 13:30 Nantou China  0.1
22 Jul 2021 22:30 Haian China  0.1
22 Jul 2021 23:15 Hsi-niu-chiao China  0.1
22 Jul 2021 23:15 Pingshan China  0.1
22 Jul 2021 22:30 Dang Noi Vietnam  0.1
22 Jul 2021 22:30 Dam Ha Vietnam  0.1
25 Jul 2021 07:45 Dongsha China  0.1
25 Jul 2021 07:45 Lingchuan China  0.1
25 Jul 2021 07:45 Hushi China  0.1
22 Jul 2021 22:45 Boshegang China  0.1
22 Jul 2021 22:45 Longmen China  0.1
22 Jul 2021 22:45 Dafanpo China  0.1
22 Jul 2021 22:45 Puqian China  0.1
22 Jul 2021 22:15 Baishawan China  0.1
25 Jul 2021 02:00 Chiang-t'ien China  0.1
25 Jul 2021 02:00 Chang-chiang China  0.1
22 Jul 2021 22:30 Longtang China  0.1
22 Jul 2021 14:15 Qishan China  0.1
22 Jul 2021 22:15 Cai Kien Vietnam  0.1
22 Jul 2021 22:30 Cot Doai Vietnam  0.1
22 Jul 2021 22:30 Vinh Thuc Vietnam  0.1
25 Jul 2021 02:00 Guhuai China  0.1
22 Jul 2021 23:15 Qianjiang China  0.1
25 Jul 2021 06:15 Chiang-k'ou China  0.1
25 Jul 2021 06:15 Daitou China  0.1
25 Jul 2021 06:15 Tangbian China  0.1
25 Jul 2021 06:15 Shicheng China  0.1
25 Jul 2021 06:15 Jiangjing China  0.1
25 Jul 2021 06:15 Gangtou China  0.1
22 Jul 2021 22:00 Dong Cay Vietnam  0.1
22 Jul 2021 17:15 Chiu-chieh China  0.1
22 Jul 2021 17:15 Shekou China  0.1
22 Jul 2021 17:15 Castle Peak New Town Hong Kong (China)  0.1
22 Jul 2021 17:15 Tuen Mun Hong Kong (China)  0.1
22 Jul 2021 15:00 Luewei China  0.1
22 Jul 2021 15:00 Shalan China  0.1
22 Jul 2021 15:00 Shadi China  0.1
22 Jul 2021 15:00 Dalangwan China  0.1
25 Jul 2021 06:00 Yuxi China  0.1
25 Jul 2021 06:00 Longtian China  0.1
22 Jul 2021 12:15 Dianbai China  0.1
22 Jul 2021 12:15 Danchang China  0.1
22 Jul 2021 12:15 Magang China  0.1
22 Jul 2021 12:15 Diancheng China  0.1
25 Jul 2021 04:15 Shaoyao China  0.1
25 Jul 2021 04:15 Huangwu China  0.1
25 Jul 2021 04:15 Nayan China  0.1
22 Jul 2021 12:00 Fan Kwai Tong Hong Kong (China)  0.1
22 Jul 2021 12:00 Lau Fau Sha Hong Kong (China)  0.1
22 Jul 2021 12:00 Ngau Kwu Long Hong Kong (China)  0.1
22 Jul 2021 12:00 Heung chau China  0.1
22 Jul 2021 12:00 Ch'i-ao China  0.1
25 Jul 2021 06:30 Nanri China  0.1
25 Jul 2021 06:30 Fuye China  0.1
22 Jul 2021 12:00 Nanping China  0.1
22 Jul 2021 12:00 Cuihengcun China  0.1
22 Jul 2021 12:00 Xiazha 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 13:45 Tiantou China  0.1
22 Jul 2021 13:45 Tonggu China  0.1
22 Jul 2021 13:45 Chixi China  0.1
22 Jul 2021 13:45 Pingsha China  0.1
24 Jul 2021 09:45 Luc Linh Vietnam  0.1
24 Jul 2021 09:45 Nam Dong Vietnam  0.1
25 Jul 2021 02:15 Zhanjiang China  0.1
25 Jul 2021 02:15 Ma-hsieh China  0.1
25 Jul 2021 02:15 Badongxu China  0.1
25 Jul 2021 02:15 Baisha China  0.1
25 Jul 2021 02:15 Xingyou China  0.1
25 Jul 2021 02:15 Doulongcun China  0.1
22 Jul 2021 22:45 Qianshan China  0.1
22 Jul 2021 12:00 Houmen China  0.1
22 Jul 2021 12:00 Magong China  0.1
22 Jul 2021 12:00 Jizhongtuo China  0.1
22 Jul 2021 12:00 Shanwei China  0.1
22 Jul 2021 12:00 Jiesheng China  0.1
22 Jul 2021 22:30 Fangcheng China  0.1
22 Jul 2021 22:30 Gongche China  0.1
22 Jul 2021 22:30 Ch'i-sha China  0.1
22 Jul 2021 12:30 Lajiwei China  0.1
22 Jul 2021 12:30 Tai Long Wan Hong Kong (China)  0.1
22 Jul 2021 12:00 Rudong 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
25 Jul 2021 06:15 Pinghai China  0.1
22 Jul 2021 12:00 Ham Tin Hong Kong (China)  0.1
22 Jul 2021 12:00 Yuen Long Hong Kong (China)  0.1
22 Jul 2021 12:00 Sz Pak Hong Kong (China)  0.1
22 Jul 2021 12:00 Shuidong China  0.1
22 Jul 2021 12:00 Ch'i-ching China  0.1
24 Jul 2021 09:30 An Co Vietnam  0.1
24 Jul 2021 09:30 Dai Loc Vietnam  0.1
25 Jul 2021 06:45 Qian'an China  0.1
25 Jul 2021 06:45 Chongwu China  0.1
25 Jul 2021 06:45 Shih-shih China  0.1
25 Jul 2021 06:45 Yakou China  0.1
25 Jul 2021 06:45 Yongning China  0.1
25 Jul 2021 06:45 Shihu China  0.1
25 Jul 2021 06:45 Dongyuan China  0.1
25 Jul 2021 06:45 Hsiang-chih China  0.1
25 Jul 2021 06:45 Zhangban China  0.1
25 Jul 2021 03:00 Guanchang China  0.1
25 Jul 2021 03:00 Jinhe China  0.1
25 Jul 2021 03:00 Wai-lo China  0.1
22 Jul 2021 13:45 Ta-lin-pu Taiwan  0.1
22 Jul 2021 13:45 Liu-chiu Hsu Taiwan  0.1
22 Jul 2021 13:45 Hou-ta-ts'o Taiwan  0.1
22 Jul 2021 13:45 I-jen Taiwan  0.1
22 Jul 2021 13:45 Tung-chiang Taiwan  0.1
22 Jul 2021 13:45 Wu-lung Taiwan  0.1
22 Jul 2021 13:45 T'ien-ch'ien-ts'o Taiwan  0.1
22 Jul 2021 13:45 Shui-ti-liao Taiwan  0.1
22 Jul 2021 13:45 Chia-ho-ts'un Taiwan  0.1
22 Jul 2021 14:00 Pinggang China  0.1
25 Jul 2021 11:30 Dianqian China  0.1
25 Jul 2021 11:30 Jiangtou China  0.1
25 Jul 2021 11:30 Hecuo China  0.1
25 Jul 2021 11:30 Liuwudian China  0.1
25 Jul 2021 11:30 Aotou China  0.1
25 Jul 2021 11:30 Xindian China  0.1
25 Jul 2021 11:30 An-ting Taiwan  0.1
25 Jul 2021 11:30 Ma-chiang China  0.1
25 Jul 2021 11:30 Chin-men Taiwan  0.1
25 Jul 2021 11:30 Lianhe China  0.1
25 Jul 2021 11:30 Ch'ing-hsu Taiwan  0.1
25 Jul 2021 11:30 Shijing China  0.1
22 Jul 2021 12:15 Huangpo China  0.1
22 Jul 2021 12:15 Chiu-wu-ch'uan China  0.1
22 Jul 2021 12:15 Meilu China  0.1
22 Jul 2021 12:15 Hai-lu China  0.1
22 Jul 2021 13:00 Yuen Long Hong Kong (China)  0.1
22 Jul 2021 13:00 Tai Po Hong Kong (China)  0.1
22 Jul 2021 13:00 Tai Po Industrial Estate Hong Kong (China)  0.1
22 Jul 2021 13:00 Fung Yuen Hong Kong (China)  0.1
22 Jul 2021 13:00 Dabu Hong Kong (China)  0.1
22 Jul 2021 13:00 Sha Tau Kok China  0.1
22 Jul 2021 13:00 Cheung Kang Hong Kong (China)  0.1
22 Jul 2021 13:00 Imtin China  0.1
22 Jul 2021 13:00 Cheung Wo Hong Kong (China)  0.1
22 Jul 2021 13:00 Pak Sha Au Hong Kong (China)  0.1
22 Jul 2021 13:00 Long Ke Hong Kong (China)  0.1
22 Jul 2021 13:00 Khitschhung China  0.1
22 Jul 2021 16:30 Dayang China  0.1
22 Jul 2021 16:30 Guanghai China  0.1
22 Jul 2021 16:30 Doushan China  0.1
25 Jul 2021 11:00 Chin-men Tao Taiwan  0.1
25 Jul 2021 11:00 Yang-chai Taiwan  0.1
22 Jul 2021 15:00 Chen-hai China  0.1
22 Jul 2021 16:15 Fang-shan Taiwan  0.1
22 Jul 2021 16:15 Feng-chiang Taiwan  0.1
22 Jul 2021 16:15 She-liao Taiwan  0.1
22 Jul 2021 16:15 Che-cheng Taiwan  0.1
22 Jul 2021 16:00 Beidou China  0.1
22 Jul 2021 16:00 Shen-ching China  0.1
24 Jul 2021 07:30 Ban Sen Vietnam  0.1