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 HWRF
Exposed countries China, Vietnam, Paracel Islands, Laos
Exposed population No people in Category 1 or higher
Maximum wind speed 58 km/h
Maximum storm surge 0.4 m (23 Jul 04:45 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 0.4 m 146 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 260 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 StormChina, Vietnam, Paracel Islands, Laos258,768
+
China257,756 
Vietnam963 
Paracel Islands45 
Laos03 

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 06:00 104 -
- - - - - China, Vietnam, Paracel Islands, Laos
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 mmChina, Laos, Vietnam9,034
+
Vietnam01 
China5,376 
Laos3,656 
100-250 mmChina, Vietnam, Laos1,929,564
+
Vietnam27,472 
China1,699,285 
Laos202,806 
50-100 mmVietnam, China, Laos9,771,013
+
Vietnam6,783,560 
China2,493,512 
Laos493,940 

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 06:00 574 1.9 million
- - - Vietnam, China, Laos




Impact estimation for the next 72h
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StormSurge

0.4 m

The maximum Storm surge height is  0.4m in San Shah, China. This height is estimated for 23 Jul 2021 04:45 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)
23 Jul 2021 04:45 San Shah China  0.4
23 Jul 2021 04:45 Gaoshan China  0.4
23 Jul 2021 04:45 Ta-ch'iu China  0.4
23 Jul 2021 04:45 Beicuo China  0.4
23 Jul 2021 04:45 Guanjing China  0.4
23 Jul 2021 04:45 Cao Yu China  0.4
23 Jul 2021 04:45 Qingfeng China  0.4
23 Jul 2021 04:45 Pingtan China  0.4
23 Jul 2021 03:45 Houtian China  0.3
25 Jul 2021 01:45 Sha-fan-chieh China  0.2
25 Jul 2021 01:30 Jinxiang China  0.2
25 Jul 2021 01:45 Pucheng China  0.2
22 Jul 2021 06:00 Bailong China  0.2
22 Jul 2021 06:00 Beimu China  0.2
22 Jul 2021 06:00 Yong'an China  0.2
22 Jul 2021 06:00 Shankou China  0.2
25 Jul 2021 01:45 Shacheng China  0.2
25 Jul 2021 01:45 Xiaguan China  0.2
25 Jul 2021 01:15 Huang-ch'i China  0.2
22 Jul 2021 21:30 Paipu China  0.2
22 Jul 2021 21:30 Baimajing China  0.2
22 Jul 2021 21:30 Hsin-ying China  0.2
22 Jul 2021 21:30 Eman China  0.2
22 Jul 2021 21:30 Taan China  0.2
22 Jul 2021 21:30 Hsin-chou China  0.2
22 Jul 2021 06:00 Yingluo China  0.2
25 Jul 2021 01:30 Yacheng China  0.2
25 Jul 2021 01:30 Sansha 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
24 Jul 2021 23:30 Xiahu China  0.2
24 Jul 2021 23:30 Da'ao China  0.2
24 Jul 2021 23:30 Changchun China  0.2
24 Jul 2021 23:30 Luxia China  0.2
25 Jul 2021 01:30 Wuqu China  0.2
22 Jul 2021 06:30 Caotan China  0.2
22 Jul 2021 06:30 Longtousha China  0.2
22 Jul 2021 06:30 Yingzai China  0.2
23 Jul 2021 00:45 Ch'i-shui China  0.2
23 Jul 2021 00:45 Haikang China  0.2
25 Jul 2021 00:45 Anhai China  0.2
25 Jul 2021 00:45 Tung-ch'ung China  0.2
25 Jul 2021 00:15 Bili China  0.2
25 Jul 2021 00:15 Ting-hai China  0.2
25 Jul 2021 00:30 Ch'ang-t'an-wo Taiwan  0.2
25 Jul 2021 01:00 Chien-chiang China  0.2
25 Jul 2021 00:15 Xinan China  0.2
24 Jul 2021 23:45 Tung-tai China  0.2
24 Jul 2021 23:45 Baisheng China  0.2
24 Jul 2021 23:45 Mabi China  0.2
24 Jul 2021 23:45 Guanban China  0.2
22 Jul 2021 09:30 Boshegang China  0.2
23 Jul 2021 00:30 Liu-sha-ying China  0.2
25 Jul 2021 00:00 Chin-feng China  0.2
25 Jul 2021 00:00 Wuhang 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
24 Jul 2021 23:45 Langqi China  0.2
24 Jul 2021 23:45 Changmen China  0.2
24 Jul 2021 23:45 Tantou China  0.2
24 Jul 2021 23:45 Fengwo China  0.2
24 Jul 2021 23:45 Yunlong China  0.2
22 Jul 2021 09:30 Haian 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
24 Jul 2021 23:30 Chiang-t'ien China  0.2
24 Jul 2021 23:45 Chang-chiang China  0.2
22 Jul 2021 09:30 Longtang China  0.2
22 Jul 2021 23:45 Shuiwei China  0.2
22 Jul 2021 23:45 Liusha China  0.2
22 Jul 2021 23:45 Mai-ch'en-hsu China  0.2
24 Jul 2021 23:30 Guhuai China  0.2
22 Jul 2021 09:30 Qianshan China  0.2
22 Jul 2021 23:30 Maichen China  0.1
23 Jul 2021 16:00 Tung-li China  0.1
23 Jul 2021 16:00 Dongshan China  0.1
22 Jul 2021 23:15 Qiaotou China  0.1
22 Jul 2021 06:00 Luewei China  0.1
22 Jul 2021 06:00 Shalan China  0.1
22 Jul 2021 06:00 Shadi China  0.1
22 Jul 2021 06:00 Dalangwan China  0.1
24 Jul 2021 22:00 Yuxi China  0.1
24 Jul 2021 22:00 Tangbian China  0.1
24 Jul 2021 22:00 Jiangjing China  0.1
24 Jul 2021 22:00 Longtian China  0.1
24 Jul 2021 22:00 Gangtou China  0.1
23 Jul 2021 06:30 Gancheng China  0.1
23 Jul 2021 06:30 Banqiao China  0.1
23 Jul 2021 06:30 Longyou China  0.1
23 Jul 2021 06:30 Lingtou China  0.1
24 Jul 2021 22:15 Chiang-k'ou China  0.1
24 Jul 2021 22:15 Daitou China  0.1
24 Jul 2021 22:15 Shicheng China  0.1
24 Jul 2021 01:15 Wangchuan China  0.1
24 Jul 2021 01:15 Fengting China  0.1
24 Jul 2021 01:15 Dawu China  0.1
24 Jul 2021 01:15 Fengwei China  0.1
24 Jul 2021 01:15 Hsiao-tso China  0.1
24 Jul 2021 01:15 Zhongmen China  0.1
24 Jul 2021 22:15 Nanri China  0.1
24 Jul 2021 22:15 Fuye China  0.1
22 Jul 2021 06:00 Dayang China  0.1
22 Jul 2021 06:00 Guanghai China  0.1
24 Jul 2021 20:00 P'u-hsi China  0.1
24 Jul 2021 20:00 P'u-hsi-ch'eng China  0.1
24 Jul 2021 20:00 Meizhou China  0.1
22 Jul 2021 22:45 Xinxing China  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 22:45 Hai huang Taiwan  0.1
23 Jul 2021 22:45 Yuan-li Taiwan  0.1
22 Jul 2021 06:30 Cuihengcun China  0.1
22 Jul 2021 06:30 Qishan China  0.1
22 Jul 2021 06:30 Ch'i-ao China  0.1
22 Jul 2021 13:15 Nantou China  0.1
24 Jul 2021 20:30 Dongsha China  0.1
24 Jul 2021 20:30 Lingchuan China  0.1
24 Jul 2021 20:30 Hushi China  0.1
22 Jul 2021 11:45 Heung chau China  0.1
22 Jul 2021 11:45 Fan Kwai Tong Hong Kong (China)  0.1
23 Jul 2021 22:30 Ching-shui Taiwan  0.1
22 Jul 2021 11:15 Nanping China  0.1
22 Jul 2021 11:15 Xiazha China  0.1
22 Jul 2021 11:15 Maogang China  0.1
22 Jul 2021 11:15 Macau Macau (China)  0.1
22 Jul 2021 11:15 Taipa Macau (China)  0.1
22 Jul 2021 11:15 Coloane Macau (China)  0.1
22 Jul 2021 22:45 Guangcun China  0.1
23 Jul 2021 06:30 Basuo China  0.1
23 Jul 2021 22:00 Lu-kang Taiwan  0.1
24 Jul 2021 22:45 Pinghai China  0.1
22 Jul 2021 10:45 Lajiwei China  0.1
22 Jul 2021 10:45 Tai Long Wan Hong Kong (China)  0.1
22 Jul 2021 10:45 Lau Fau Sha Hong Kong (China)  0.1
22 Jul 2021 10:45 Ngau Kwu Long Hong Kong (China)  0.1
22 Jul 2021 10:45 Castle Peak New Town Hong Kong (China)  0.1
22 Jul 2021 10:45 Tuen Mun Hong Kong (China)  0.1
22 Jul 2021 10:45 Ham Tin Hong Kong (China)  0.1
22 Jul 2021 11:00 Chiu-chieh China  0.1
22 Jul 2021 11:00 Shekou China  0.1
23 Jul 2021 06:15 Duntou China  0.1
22 Jul 2021 06:00 Tiantou China  0.1
22 Jul 2021 06:00 Tonggu 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
23 Jul 2021 15:00 Dongjian China  0.1
23 Jul 2021 15:00 Houhu China  0.1
23 Jul 2021 15:00 Bengtang China  0.1
23 Jul 2021 15:00 Houhai China  0.1
22 Jul 2021 11:30 Yuen Long Hong Kong (China)  0.1
22 Jul 2021 11:30 Sz Pak Hong Kong (China)  0.1
22 Jul 2021 06:00 Doushan China  0.1
22 Jul 2021 06:00 Chixi 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 13:45 Pingsha China  0.1
22 Jul 2021 06:45 Yuen Long Hong Kong (China)  0.1
22 Jul 2021 06:45 Tai Po Hong Kong (China)  0.1
22 Jul 2021 06:45 Tai Po Industrial Estate Hong Kong (China)  0.1
22 Jul 2021 06:45 Fung Yuen Hong Kong (China)  0.1
22 Jul 2021 06:45 Dabu Hong Kong (China)  0.1
22 Jul 2021 06:45 Sha Tau Kok China  0.1
22 Jul 2021 06:45 Cheung Kang Hong Kong (China)  0.1
22 Jul 2021 06:45 Imtin China  0.1
22 Jul 2021 06:45 Cheung Wo Hong Kong (China)  0.1
22 Jul 2021 06:45 Pak Sha Au Hong Kong (China)  0.1
22 Jul 2021 06:45 Long Ke Hong Kong (China)  0.1
22 Jul 2021 06:45 Khitschhung China  0.1
23 Jul 2021 22:30 Sha-shan Taiwan  0.1
23 Jul 2021 22:30 Wang-kung Taiwan  0.1
23 Jul 2021 06:30 Foluo 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 06:45 Dapeng China  0.1
22 Jul 2021 06:45 Taipang China  0.1
22 Jul 2021 06:45 Shagang China  0.1
22 Jul 2021 06:45 Aotou China  0.1
22 Jul 2021 06:45 Luzui China  0.1
22 Jul 2021 08:15 Baijiao China  0.1
22 Jul 2021 08:15 San-tsao China  0.1
22 Jul 2021 12:45 Houmen China  0.1
22 Jul 2021 12:45 Magong China  0.1
22 Jul 2021 12:45 Jizhongtuo China  0.1
22 Jul 2021 12:45 Shanwei China  0.1
22 Jul 2021 12:45 Jiesheng China  0.1
24 Jul 2021 22:15 Fugong China  0.1
24 Jul 2021 22:15 Haicang China  0.1
24 Jul 2021 22:15 Gangwei China  0.1
24 Jul 2021 22:15 Songyu China  0.1
24 Jul 2021 22:15 Hsing-lin China  0.1
24 Jul 2021 22:15 Xucuo China  0.1
24 Jul 2021 22:15 Gulangyu China  0.1
24 Jul 2021 22:15 Xiamen China  0.1
24 Jul 2021 22:15 Chen-hai China  0.1
24 Jul 2021 22:15 Daomei China  0.1
24 Jul 2021 22:15 Dianqian China  0.1
24 Jul 2021 22:15 Jiangtou China  0.1
24 Jul 2021 22:15 Zhenhai China  0.1
24 Jul 2021 22:15 Hecuo China  0.1
24 Jul 2021 22:15 Liuwudian China  0.1
25 Jul 2021 01:45 Badongxu China  0.1
25 Jul 2021 01:45 Baisha China  0.1
25 Jul 2021 01:45 Shaoyao China  0.1
25 Jul 2021 01:45 Xingyou China  0.1
25 Jul 2021 01:45 Huangwu China  0.1
25 Jul 2021 01:45 Nayan China  0.1
25 Jul 2021 01:45 Doulongcun China  0.1
22 Jul 2021 06:30 Cheung Sha Wan Hong Kong (China)  0.1
22 Jul 2021 06:30 Tsz Wa Chan Hong Kong (China)  0.1
22 Jul 2021 06:30 Yau Ma Po Hong Kong (China)  0.1
22 Jul 2021 06:30 Sai Kung Hong Kong (China)  0.1
22 Jul 2021 16:00 Beidou China  0.1
22 Jul 2021 16:00 Chen-hai China  0.1
22 Jul 2021 16:00 Shen-ching China  0.1
23 Jul 2021 06:15 Beili China  0.1
23 Jul 2021 06:15 Changhua China  0.1
22 Jul 2021 08:45 Meige China  0.1
22 Jul 2021 08:45 Mashan China  0.1
22 Jul 2021 08:45 Doumen China  0.1
24 Jul 2021 22:30 Qian'an China  0.1
24 Jul 2021 22:30 Chongwu China  0.1
24 Jul 2021 21:45 Guankou China  0.1
22 Jul 2021 12:00 Rudong China  0.1
22 Jul 2021 09:30 Jinhe China  0.1
22 Jul 2021 09:30 Wai-lo China  0.1
22 Jul 2021 12:00 Shuidong China  0.1
22 Jul 2021 12:00 Ch'i-ching China  0.1
22 Jul 2021 14:00 Pinggang China  0.1
25 Jul 2021 02:45 Zhanjiang China  0.1
25 Jul 2021 02:45 Ma-hsieh 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 07:45 Liu-chiu Hsu Taiwan  0.1
22 Jul 2021 07:45 Hou-ta-ts'o Taiwan  0.1
22 Jul 2021 07:45 Tung-chiang Taiwan  0.1
22 Jul 2021 07:45 Wu-lung Taiwan  0.1
22 Jul 2021 07:45 T'ien-ch'ien-ts'o Taiwan  0.1
22 Jul 2021 07:45 Shui-ti-liao Taiwan  0.1
22 Jul 2021 07:45 Chia-ho-ts'un Taiwan  0.1
22 Jul 2021 07:45 Fang-shan Taiwan  0.1
22 Jul 2021 07:45 Feng-chiang Taiwan  0.1
23 Jul 2021 23:30 Chi-pei Taiwan  0.1
22 Jul 2021 06:00 Chengcun China  0.1
22 Jul 2021 06:00 Santouzui China  0.1
22 Jul 2021 06:00 Hsi-t'ou China  0.1
22 Jul 2021 06:00 Lengzilin China  0.1
23 Jul 2021 22:00 San-hsing Taiwan  0.1
23 Jul 2021 22:00 T'ai-hsi Taiwan  0.1
23 Jul 2021 23:15 Wai-an Taiwan  0.1
23 Jul 2021 22:15 Chung-ch'i Taiwan  0.1
23 Jul 2021 23:15 Hua-hsu Taiwan  0.1