Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
18 Jul 2021 18 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 China
Exposed population 4 thousand in Category 1 or higher
Maximum wind speed 72 km/h
Maximum storm surge 1.9 m (20 Jul 01:00 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 72 km/h 1.9 m 142 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 1.3 million can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 18 Jul 2021 18:00 UTC
CategoryCountryPopulation 
CAT. 1China3,790 
Tropical StormChina1,333,938 

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 18:00 144 4 thousand
- - - - China
Download:





Impact estimation for the next 72h
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Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 18 Jul 2021 18:00 UTC
LevelCountryPopulation 
250-500 mmChina, Laos, Cambodia4,713,321
+
China4,687,495 
Laos25,820 
Cambodia04 
100-250 mmChina, Macao, Philippines, Laos, Cambodia, Vietnam16,775,317
+
China13,193,910 
Vietnam10,549 
Macao579,652 
Philippines2,847,167 
Laos115,233 
Cambodia28,803 
50-100 mmChina, Vietnam, Hong Kong, Philippines, Thailand, Laos, Cambodia65,455,200
+
China46,765,855 
Vietnam820,888 
Hong Kong7,326,481 
Philippines8,442,182 
Thailand640,922 
Laos1,024,870 
Cambodia434,000 

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 18:00 615 21.5 million
- - - China, Vietnam, Hong Kong, Macao, Philippines, Thailand, Laos, Cambodia




Impact estimation for the next 72h
TOP

StormSurge

1.9 m

The maximum Storm surge height is  1.9m in Luewei, China. This height is estimated for 20 Jul 2021 01:00 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 18 Jul 2021 18:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
20 Jul 2021 01:00 Luewei China  1.9
20 Jul 2021 01:00 Shalan China  1.9
20 Jul 2021 01:00 Shadi China  1.9
20 Jul 2021 01:00 Dalangwan China  1.9
20 Jul 2021 02:30 Dayang China  1.9
20 Jul 2021 02:30 Guanghai China  1.9
20 Jul 2021 01:45 Tiantou China  1.6
20 Jul 2021 01:45 Tonggu China  1.6
20 Jul 2021 03:45 Doushan China  1.4
20 Jul 2021 03:45 Chixi China  1.4
20 Jul 2021 09:30 Beidou China  1.1
20 Jul 2021 09:30 Chen-hai China  1.1
20 Jul 2021 09:30 Shen-ching China  1.1
20 Jul 2021 01:30 Mashan China  1.0
20 Jul 2021 01:30 Pingsha China  1.0
20 Jul 2021 02:15 Meige China  1.0
20 Jul 2021 02:15 Doumen China  1.0
20 Jul 2021 03:45 Huangchong China  1.0
20 Jul 2021 03:45 Mei-ko China  1.0
20 Jul 2021 03:45 Ching-an China  0.9
20 Jul 2021 03:45 Xiaolin China  0.9
20 Jul 2021 00:30 Baijiao China  0.6
20 Jul 2021 00:30 San-tsao China  0.6
20 Jul 2021 00:30 Nanping China  0.6
20 Jul 2021 00:30 Macau Macau (China)  0.6
20 Jul 2021 00:30 Taipa Macau (China)  0.6
20 Jul 2021 00:30 Coloane Macau (China)  0.6
20 Jul 2021 00:45 Xiazha China  0.5
20 Jul 2021 00:45 Maogang China  0.5
20 Jul 2021 00:45 Heung chau China  0.5
20 Jul 2021 05:45 Hsin-chou China  0.5
20 Jul 2021 05:30 Dagou China  0.5
20 Jul 2021 01:00 Cuihengcun China  0.4
20 Jul 2021 01:00 Qishan China  0.4
20 Jul 2021 01:00 Ch'i-ao China  0.4
19 Jul 2021 22:30 Wanshan China  0.4
20 Jul 2021 10:30 Jiangcheng China  0.4
20 Jul 2021 10:30 Baipu China  0.4
20 Jul 2021 02:45 Fan Kwai Tong Hong Kong (China)  0.4
20 Jul 2021 02:45 Nantou China  0.4
20 Jul 2021 01:45 Lajiwei China  0.4
20 Jul 2021 11:45 Pinggang China  0.3
20 Jul 2021 02:00 Tai Long Wan Hong Kong (China)  0.3
20 Jul 2021 02:00 Shekou China  0.3
20 Jul 2021 02:00 Lau Fau Sha Hong Kong (China)  0.3
20 Jul 2021 02:45 Min-chung China  0.3
20 Jul 2021 02:45 Cheng'anwei China  0.3
20 Jul 2021 02:30 Chiu-chieh China  0.3
20 Jul 2021 02:30 Ngau Kwu Long Hong Kong (China)  0.3
20 Jul 2021 02:30 Castle Peak New Town Hong Kong (China)  0.3
20 Jul 2021 02:30 Tuen Mun Hong Kong (China)  0.3
20 Jul 2021 01:45 Wan-ch'ing-sha China  0.3
20 Jul 2021 02:15 Ham Tin Hong Kong (China)  0.3
20 Jul 2021 07:30 Huangge China  0.3
20 Jul 2021 07:30 Jiang'ouwei China  0.3
20 Jul 2021 07:30 Fumunchai China  0.3
20 Jul 2021 07:30 Fumuntschai China  0.3
20 Jul 2021 07:30 Baihao China  0.3
20 Jul 2021 07:30 Taiping China  0.3
20 Jul 2021 07:30 Sha-ching China  0.3
20 Jul 2021 07:30 Heping China  0.3
20 Jul 2021 02:30 Yuen Long Hong Kong (China)  0.3
20 Jul 2021 02:30 Sz Pak Hong Kong (China)  0.3
19 Jul 2021 22:15 San Shah China  0.3
19 Jul 2021 22:15 Gaoshan China  0.3
19 Jul 2021 22:15 Ta-ch'iu China  0.3
19 Jul 2021 22:15 Beicuo China  0.3
19 Jul 2021 22:15 Guanjing China  0.3
19 Jul 2021 22:15 Cao Yu China  0.3
19 Jul 2021 22:15 Qingfeng China  0.3
19 Jul 2021 22:15 Pingtan China  0.3
20 Jul 2021 00:00 Nam Wan Hong Kong (China)  0.2
20 Jul 2021 00:00 Hoi Pa Hong Kong (China)  0.2
20 Jul 2021 00:00 Lo Tik Wan Hong Kong (China)  0.2
20 Jul 2021 00:00 Tsuen Wan Hong Kong (China)  0.2
20 Jul 2021 00:00 Lo So Shing Hong Kong (China)  0.2
20 Jul 2021 00:00 Ha Kwai Chung Hong Kong (China)  0.2
20 Jul 2021 00:00 Pok Fu Lam Hong Kong (China)  0.2
20 Jul 2021 00:00 Wa Fu Estate Hong Kong (China)  0.2
20 Jul 2021 00:00 Kennedy Town Hong Kong (China)  0.2
20 Jul 2021 00:00 Aberdeen Hong Kong (China)  0.2
20 Jul 2021 00:00 Cheung Sha Wan Hong Kong (China)  0.2
20 Jul 2021 00:00 Won Hang Hong Kong (China)  0.2
20 Jul 2021 00:00 Tain Sha Tsui Hong Kong (China)  0.2
20 Jul 2021 00:00 Central Hong Kong (China)  0.2
20 Jul 2021 00:00 Kowloon Hong Kong (China)  0.2
20 Jul 2021 00:00 Wan Chai Hong Kong (China)  0.2
20 Jul 2021 00:00 Tsz Wa Chan Hong Kong (China)  0.2
20 Jul 2021 00:00 Chung Hom Kok Hong Kong (China)  0.2
20 Jul 2021 00:00 North Point Hong Kong (China)  0.2
20 Jul 2021 00:00 Chek Chue Hong Kong (China)  0.2
20 Jul 2021 00:00 Crocodile Hill Hong Kong (China)  0.2
19 Jul 2021 08:00 Yuen Long Hong Kong (China)  0.2
19 Jul 2021 08:00 Tai Po Hong Kong (China)  0.2
19 Jul 2021 08:00 Tai Po Industrial Estate Hong Kong (China)  0.2
19 Jul 2021 08:00 Fung Yuen Hong Kong (China)  0.2
19 Jul 2021 08:00 Dabu Hong Kong (China)  0.2
19 Jul 2021 08:00 Sha Tau Kok China  0.2
19 Jul 2021 08:00 Cheung Kang Hong Kong (China)  0.2
19 Jul 2021 08:00 Imtin China  0.2
19 Jul 2021 08:00 Cheung Wo Hong Kong (China)  0.2
19 Jul 2021 08:00 Pak Sha Au Hong Kong (China)  0.2
19 Jul 2021 08:00 Long Ke Hong Kong (China)  0.2
19 Jul 2021 08:00 Khitschhung China  0.2
19 Jul 2021 07:30 Yau Ma Po Hong Kong (China)  0.2
19 Jul 2021 07:30 Sai Kung Hong Kong (China)  0.2
19 Jul 2021 07:15 Dapeng China  0.2
19 Jul 2021 07:15 Taipang China  0.2
19 Jul 2021 07:15 Shagang China  0.2
19 Jul 2021 07:00 Aotou China  0.2
20 Jul 2021 21:00 Caotan China  0.2
19 Jul 2021 07:00 Luzui China  0.2
20 Jul 2021 11:15 Lengzilin China  0.2
20 Jul 2021 18:30 Chengcun China  0.2
20 Jul 2021 18:30 Santouzui China  0.2
20 Jul 2021 18:30 Hsi-t'ou China  0.2
21 Jul 2021 08:00 Ma-hsieh China  0.2
21 Jul 2021 08:00 Badongxu China  0.2
21 Jul 2021 08:00 Potou China  0.2
21 Jul 2021 08:00 Bengtang China  0.2
21 Jul 2021 08:00 Baisha China  0.2
21 Jul 2021 08:00 Shaoyao China  0.2
21 Jul 2021 08:00 Xingyou China  0.2
21 Jul 2021 08:00 Huangpo China  0.2
21 Jul 2021 08:00 Chiu-wu-ch'uan China  0.2
20 Jul 2021 00:00 Tai Tam Hong Kong (China)  0.2
20 Jul 2021 00:00 Stanley Hong Kong (China)  0.2
20 Jul 2021 00:00 San Wan Ho Shau Hong Kong (China)  0.2
20 Jul 2021 00:00 Yau Tong Hong Kong (China)  0.2
20 Jul 2021 00:00 Rennie's Mill Hong Kong (China)  0.2
20 Jul 2021 00:00 A Kung Ngam Hong Kong (China)  0.2
20 Jul 2021 00:00 Chai Wan Hong Kong (China)  0.2
20 Jul 2021 00:00 Sau Mau Ping Hong Kong (China)  0.2
20 Jul 2021 00:00 Hok Tsui Wan Hong Kong (China)  0.2
20 Jul 2021 00:00 Chik Sha Hong Kong (China)  0.2
20 Jul 2021 00:00 Hang Hau Hong Kong (China)  0.2
20 Jul 2021 00:00 Tei Tong Tsui Hong Kong (China)  0.2
20 Jul 2021 00:00 Tai Wan Tau Hong Kong (China)  0.2
18 Jul 2021 23:15 Hsia-yung China  0.2
18 Jul 2021 23:15 Renshan China  0.2
18 Jul 2021 23:15 Jen-shan China  0.2
18 Jul 2021 23:15 Fanhe China  0.2
18 Jul 2021 23:15 Pinghai China  0.2
21 Jul 2021 01:00 Yingluo China  0.2
21 Jul 2021 01:00 Longtousha China  0.2
21 Jul 2021 01:00 Yingzai China  0.2
19 Jul 2021 16:30 Houmen China  0.2
19 Jul 2021 16:15 Jiesheng China  0.2
19 Jul 2021 16:15 Tianqian China  0.2
19 Jul 2021 16:15 Zhelang China  0.2
20 Jul 2021 22:00 Bailong China  0.2
20 Jul 2021 22:00 Beimu China  0.2
20 Jul 2021 22:00 Yong'an China  0.2
20 Jul 2021 22:00 Shankou China  0.2
19 Jul 2021 22:00 Houtian China  0.2
19 Jul 2021 16:45 Magong China  0.2
20 Jul 2021 22:00 Ch'i-shui China  0.2
20 Jul 2021 22:00 Haikang China  0.2
19 Jul 2021 17:00 Jizhongtuo China  0.2
19 Jul 2021 01:30 Dongjian China  0.2
19 Jul 2021 01:30 Houhu China  0.2
19 Jul 2021 01:30 Houhai China  0.2
19 Jul 2021 01:30 Huangwu China  0.2
19 Jul 2021 01:30 Nayan China  0.2
19 Jul 2021 01:30 Doulongcun China  0.2
19 Jul 2021 16:45 Shanwei China  0.2
19 Jul 2021 17:00 Gangkou China  0.2
19 Jul 2021 16:00 Jieshi China  0.2
20 Jul 2021 18:15 Diancheng China  0.2
20 Jul 2021 18:15 Rudong China  0.2
19 Jul 2021 15:45 Hudong China  0.2
20 Jul 2021 21:45 Liu-sha-ying China  0.2
20 Jul 2021 14:45 Shangyang China  0.2
20 Jul 2021 21:45 Shuiwei China  0.2
18 Jul 2021 23:30 Shuidong China  0.2
18 Jul 2021 23:30 Ch'i-ching China  0.2
18 Jul 2021 23:30 Dianbai China  0.2
18 Jul 2021 23:30 Danchang China  0.2
18 Jul 2021 23:30 Magang China  0.2
20 Jul 2021 21:15 Liusha China  0.1
20 Jul 2021 21:15 Mai-ch'en-hsu China  0.1
19 Jul 2021 07:00 Tho Ngoa Vietnam  0.1
19 Jul 2021 07:00 Ly Nhon Thon Vietnam  0.1
19 Jul 2021 07:00 Dong Hoi Vietnam  0.1
20 Jul 2021 21:15 Xinxing China  0.1
20 Jul 2021 21:00 Paipu China  0.1
20 Jul 2021 21:00 Baimajing China  0.1
20 Jul 2021 21:00 Hsin-ying China  0.1
20 Jul 2021 21:00 Eman China  0.1
20 Jul 2021 21:00 Taan China  0.1
20 Jul 2021 21:00 Hsin-chou China  0.1
20 Jul 2021 21:45 Qiaotou China  0.1
19 Jul 2021 02:45 Guanchang China  0.1
19 Jul 2021 02:45 Dongli China  0.1
19 Jul 2021 02:45 Tung-li China  0.1
19 Jul 2021 02:45 Jinhe China  0.1
19 Jul 2021 02:45 Wai-lo China  0.1
19 Jul 2021 15:45 Jiazi China  0.1
19 Jul 2021 15:45 Changqingwei China  0.1
20 Jul 2021 21:30 Guangcun China  0.1
19 Jul 2021 13:30 Taiping China  0.1
19 Jul 2021 13:30 Xianmai China  0.1
19 Jul 2021 13:30 Longshe China  0.1
18 Jul 2021 23:30 Meilu China  0.1
18 Jul 2021 23:30 Hai-lu China  0.1
19 Jul 2021 01:30 Qianshan China  0.1
19 Jul 2021 02:45 Xiuying China  0.1
19 Jul 2021 02:45 Haikou China  0.1
19 Jul 2021 02:45 Puqian China  0.1
20 Jul 2021 22:45 Gaode China  0.1
20 Jul 2021 22:45 Guchengling China  0.1
20 Jul 2021 21:00 Maichen China  0.1
19 Jul 2021 13:45 Dongshan China  0.1
20 Jul 2021 23:30 Beihai China  0.1
19 Jul 2021 16:15 Shenquan China  0.1
19 Jul 2021 00:30 Zhanjiang China  0.1
19 Jul 2021 04:30 Donghong China  0.1
19 Jul 2021 04:30 Jinghai China  0.1
19 Jul 2021 04:30 Ch'ao-yang-hsien China  0.1
19 Jul 2021 04:30 Haimen China  0.1
19 Jul 2021 04:30 Dahao China  0.1
19 Jul 2021 04:30 Aotou China  0.1
19 Jul 2021 04:30 Daitou China  0.1
19 Jul 2021 05:45 Guangao China  0.1
19 Jul 2021 05:45 Siwei China  0.1
19 Jul 2021 05:45 Houzhai China  0.1
18 Jul 2021 22:00 Huiwen China  0.1
18 Jul 2021 22:00 Chen Lan China  0.1
18 Jul 2021 22:00 Qinglan China  0.1
20 Jul 2021 22:30 Hsi-ch'ang-hsu China  0.1
20 Jul 2021 22:30 Hsi-ch'ang China  0.1
20 Jul 2021 22:30 Dangjiang China  0.1
20 Jul 2021 22:30 Qianjiang China  0.1
21 Jul 2021 03:00 Gia Luan Vietnam  0.1
21 Jul 2021 03:00 Dong Vang Vietnam  0.1
21 Jul 2021 03:00 Hon Gay Vietnam  0.1
21 Jul 2021 03:00 Lang Bang Vietnam  0.1
21 Jul 2021 03:00 Ha Tou Vietnam  0.1
20 Jul 2021 21:30 Shagang China  0.1
19 Jul 2021 03:00 Haian China  0.1
20 Jul 2021 22:15 Guanjing China  0.1
20 Jul 2021 22:45 Mong Cai Vietnam  0.1
20 Jul 2021 22:45 Jiangpingxu China  0.1
20 Jul 2021 22:45 Jiangping China  0.1
20 Jul 2021 22:45 Wanwei China  0.1
20 Jul 2021 22:30 Bailong China  0.1
20 Jul 2021 22:30 Jiangshan China  0.1
20 Jul 2021 22:30 Baishawan China  0.1
20 Jul 2021 22:30 Fangcheng China  0.1
20 Jul 2021 22:30 Gongche China  0.1
20 Jul 2021 22:30 Ch'i-sha China  0.1
19 Jul 2021 02:45 Boshegang China  0.1
19 Jul 2021 02:45 Longtang China  0.1