Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
20 Jul 2021 00 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 144 km/h
Maximum storm surge 1.1 m (20 Jul 05:30 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 144 km/h 1.1 m 221 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)

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Wind



Wind exposed population - AoIs

Estimations based on the bulletin of 20 Jul 2021 00:00 UTC
CategoryCountryPopulation 
Tropical StormTaiwan, China1,201,099
+
Taiwan52,057 
China1,149,041 

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 -
- - - - - Taiwan, China
Download:





Impact estimation for the next 72h
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Rainfall

795 mm

Up to 19.2 million can be affected by rain higher than 100mm (see SSHS)





Rain exposed population - AoIs

Estimations based on the bulletin of 20 Jul 2021 00:00 UTC
LevelCountryPopulation 
250-500 mmChina516,119 
100-250 mmChina, Vietnam, Laos, Philippines18,702,689
+
China12,335,197 
Vietnam963 
Laos79 
Philippines6,366,448 
50-100 mmChina, Vietnam, Laos, Thailand, Philippines, Cambodia26,232,713
+
China14,272,079 
Vietnam6,077,878 
Laos823,664 
Thailand118,073 
Philippines4,927,288 
Cambodia13,728 

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 00:00 397 19.2 million
- - - China, Vietnam, Laos, Thailand, Philippines, Cambodia




Impact estimation for the next 72h
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StormSurge

1.1 m

The maximum Storm surge height is  1.1m in Shalan, China. This height is estimated for 20 Jul 2021 05:30 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 20 Jul 2021 00:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
20 Jul 2021 05:30 Shalan China  1.1
20 Jul 2021 05:30 Dayang China  1.1
20 Jul 2021 05:30 Dalangwan China  1.1
20 Jul 2021 05:30 Guanghai China  1.1
20 Jul 2021 05:45 Luewei China  1.0
20 Jul 2021 05:45 Shadi China  1.0
20 Jul 2021 10:00 Beidou China  1.0
20 Jul 2021 10:00 Chen-hai China  1.0
20 Jul 2021 10:00 Shen-ching China  1.0
20 Jul 2021 06:00 Tiantou China  0.9
20 Jul 2021 06:00 Tonggu China  0.9
20 Jul 2021 07:15 Doushan China  0.7
20 Jul 2021 07:15 Chixi China  0.7
20 Jul 2021 05:00 Meige China  0.5
20 Jul 2021 05:00 Mashan China  0.5
20 Jul 2021 05:00 Pingsha China  0.5
20 Jul 2021 05:00 Doumen China  0.5
20 Jul 2021 08:30 Dagou China  0.5
20 Jul 2021 08:30 Hsin-chou China  0.5
20 Jul 2021 06:45 Huangchong China  0.5
20 Jul 2021 06:45 Mei-ko China  0.5
20 Jul 2021 12:00 Jiangcheng China  0.5
20 Jul 2021 12:00 Baipu China  0.5
20 Jul 2021 06:45 Ching-an China  0.5
20 Jul 2021 06:45 Xiaolin China  0.5
20 Jul 2021 12:00 Pinggang China  0.5
20 Jul 2021 04:30 Baijiao China  0.4
20 Jul 2021 04:30 San-tsao China  0.4
20 Jul 2021 04:30 Nanping China  0.4
20 Jul 2021 04:30 Macau Macau (China)  0.4
20 Jul 2021 04:30 Taipa Macau (China)  0.4
20 Jul 2021 04:30 Coloane Macau (China)  0.4
21 Jul 2021 21:45 Bailong China  0.3
21 Jul 2021 21:45 Beimu China  0.3
21 Jul 2021 21:45 Yong'an China  0.3
21 Jul 2021 21:45 Shankou China  0.3
21 Jul 2021 21:45 Yingluo China  0.3
20 Jul 2021 04:15 Maogang China  0.3
20 Jul 2021 04:15 Heung chau China  0.3
20 Jul 2021 05:00 Xiazha China  0.3
20 Jul 2021 05:45 Cuihengcun China  0.3
20 Jul 2021 05:45 Qishan China  0.3
20 Jul 2021 05:45 Ch'i-ao China  0.3
21 Jul 2021 16:30 San Shah China  0.3
21 Jul 2021 16:30 Gaoshan China  0.3
21 Jul 2021 16:30 Ta-ch'iu China  0.3
21 Jul 2021 16:30 Beicuo China  0.3
21 Jul 2021 16:30 Guanjing China  0.3
21 Jul 2021 16:30 Cao Yu China  0.3
21 Jul 2021 16:30 Qingfeng China  0.3
21 Jul 2021 16:30 Pingtan China  0.3
20 Jul 2021 10:45 Min-chung China  0.3
20 Jul 2021 10:45 Cheng'anwei China  0.3
20 Jul 2021 06:00 Fan Kwai Tong Hong Kong (China)  0.3
20 Jul 2021 06:00 Nantou China  0.3
20 Jul 2021 08:45 Wan-ch'ing-sha China  0.3
20 Jul 2021 12:30 Lengzilin China  0.2
20 Jul 2021 03:00 Wanshan China  0.2
20 Jul 2021 06:00 Yuen Long Hong Kong (China)  0.2
20 Jul 2021 06:00 Tai Po Hong Kong (China)  0.2
20 Jul 2021 06:00 Tai Po Industrial Estate Hong Kong (China)  0.2
20 Jul 2021 06:00 Fung Yuen Hong Kong (China)  0.2
20 Jul 2021 06:00 Dabu Hong Kong (China)  0.2
20 Jul 2021 06:00 Sha Tau Kok China  0.2
20 Jul 2021 06:00 Cheung Kang Hong Kong (China)  0.2
20 Jul 2021 06:00 Imtin China  0.2
20 Jul 2021 06:00 Cheung Wo Hong Kong (China)  0.2
20 Jul 2021 06:00 Pak Sha Au Hong Kong (China)  0.2
20 Jul 2021 06:00 Long Ke Hong Kong (China)  0.2
20 Jul 2021 06:00 Khitschhung China  0.2
21 Jul 2021 21:00 Caotan China  0.2
20 Jul 2021 17:15 Chengcun China  0.2
20 Jul 2021 17:15 Santouzui China  0.2
20 Jul 2021 17:15 Hsi-t'ou China  0.2
20 Jul 2021 06:00 Tai Long Wan Hong Kong (China)  0.2
20 Jul 2021 06:00 Shekou China  0.2
20 Jul 2021 06:00 Lau Fau Sha Hong Kong (China)  0.2
20 Jul 2021 08:45 Huangge China  0.2
20 Jul 2021 08:45 Jiang'ouwei China  0.2
20 Jul 2021 08:45 Fumunchai China  0.2
20 Jul 2021 08:45 Fumuntschai China  0.2
20 Jul 2021 08:45 Baihao China  0.2
20 Jul 2021 08:45 Taiping China  0.2
20 Jul 2021 08:45 Sha-ching China  0.2
20 Jul 2021 08:45 Heping China  0.2
20 Jul 2021 06:00 Cheung Sha Wan Hong Kong (China)  0.2
20 Jul 2021 06:00 Tsz Wa Chan Hong Kong (China)  0.2
20 Jul 2021 06:00 Yau Ma Po Hong Kong (China)  0.2
20 Jul 2021 06:00 Sai Kung Hong Kong (China)  0.2
20 Jul 2021 05:45 Chiu-chieh China  0.2
20 Jul 2021 05:45 Ngau Kwu Long Hong Kong (China)  0.2
20 Jul 2021 05:45 Castle Peak New Town Hong Kong (China)  0.2
20 Jul 2021 05:45 Tuen Mun Hong Kong (China)  0.2
23 Jul 2021 00:00 Longtousha China  0.2
20 Jul 2021 05:30 Lajiwei China  0.2
20 Jul 2021 06:00 Ham Tin Hong Kong (China)  0.2
20 Jul 2021 06:15 Dapeng China  0.2
20 Jul 2021 06:15 Taipang China  0.2
20 Jul 2021 06:15 Shagang China  0.2
20 Jul 2021 06:00 Yuen Long Hong Kong (China)  0.2
20 Jul 2021 06:00 Sz Pak Hong Kong (China)  0.2
22 Jul 2021 00:00 Yingzai China  0.2
20 Jul 2021 06:00 Aotou China  0.2
22 Jul 2021 23:00 Ch'i-shui China  0.2
22 Jul 2021 23:00 Haikang China  0.2
23 Jul 2021 00:00 Gaode China  0.2
23 Jul 2021 00:00 Guchengling China  0.2
20 Jul 2021 20:30 Houtian China  0.2
20 Jul 2021 06:00 Luzui China  0.2
21 Jul 2021 21:15 Guanjing China  0.2
21 Jul 2021 21:15 Hsi-ch'ang-hsu China  0.2
21 Jul 2021 21:15 Hsi-ch'ang China  0.2
21 Jul 2021 21:15 Shagang China  0.2
23 Jul 2021 00:00 Beihai China  0.2
20 Jul 2021 05:00 Hsia-yung China  0.2
22 Jul 2021 23:30 Liu-sha-ying China  0.2
20 Jul 2021 13:15 Shangyang China  0.2
21 Jul 2021 22:00 Dangjiang China  0.2
21 Jul 2021 22:00 Qianjiang China  0.2
23 Jul 2021 00:00 Shuiwei China  0.2
23 Jul 2021 00:00 Liusha China  0.2
23 Jul 2021 00:00 Mai-ch'en-hsu China  0.2
20 Jul 2021 04:45 Renshan China  0.2
20 Jul 2021 04:45 Jen-shan China  0.2
20 Jul 2021 03:30 Nam Wan Hong Kong (China)  0.2
20 Jul 2021 03:30 Hoi Pa Hong Kong (China)  0.2
20 Jul 2021 03:30 Lo Tik Wan Hong Kong (China)  0.2
20 Jul 2021 03:30 Tsuen Wan Hong Kong (China)  0.2
20 Jul 2021 03:30 Lo So Shing Hong Kong (China)  0.2
20 Jul 2021 03:30 Ha Kwai Chung Hong Kong (China)  0.2
20 Jul 2021 03:30 Pok Fu Lam Hong Kong (China)  0.2
20 Jul 2021 03:30 Wa Fu Estate Hong Kong (China)  0.2
20 Jul 2021 03:30 Kennedy Town Hong Kong (China)  0.2
20 Jul 2021 03:30 Aberdeen Hong Kong (China)  0.2
20 Jul 2021 03:30 Won Hang Hong Kong (China)  0.2
20 Jul 2021 03:30 Tain Sha Tsui Hong Kong (China)  0.2
20 Jul 2021 03:30 Central Hong Kong (China)  0.2
20 Jul 2021 03:30 Kowloon Hong Kong (China)  0.2
20 Jul 2021 03:30 Wan Chai Hong Kong (China)  0.2
20 Jul 2021 03:30 Chung Hom Kok Hong Kong (China)  0.2
20 Jul 2021 03:30 North Point Hong Kong (China)  0.2
20 Jul 2021 03:30 Chek Chue Hong Kong (China)  0.2
20 Jul 2021 03:30 Crocodile Hill Hong Kong (China)  0.2
23 Jul 2021 00:00 Maichen China  0.2
21 Jul 2021 21:30 Hsi-niu-chiao China  0.2
21 Jul 2021 21:30 Pingshan China  0.2
20 Jul 2021 04:30 Fanhe China  0.2
20 Jul 2021 04:30 Pinghai China  0.2
21 Jul 2021 05:30 Ma-hsieh China  0.2
21 Jul 2021 05:30 Badongxu China  0.2
21 Jul 2021 05:30 Potou China  0.2
21 Jul 2021 05:30 Bengtang China  0.2
21 Jul 2021 05:30 Baisha China  0.2
21 Jul 2021 05:30 Shaoyao China  0.2
21 Jul 2021 05:30 Xingyou China  0.2
21 Jul 2021 05:30 Huangpo China  0.2
21 Jul 2021 05:30 Chiu-wu-ch'uan China  0.2
21 Jul 2021 23:15 Longmen China  0.2
21 Jul 2021 23:15 Dafanpo China  0.2
22 Jul 2021 23:30 Qiaotou China  0.2
20 Jul 2021 03:30 Tai Tam Hong Kong (China)  0.2
20 Jul 2021 03:30 Stanley Hong Kong (China)  0.2
20 Jul 2021 03:30 San Wan Ho Shau Hong Kong (China)  0.2
20 Jul 2021 03:30 Yau Tong Hong Kong (China)  0.2
20 Jul 2021 03:30 Rennie's Mill Hong Kong (China)  0.2
20 Jul 2021 03:30 A Kung Ngam Hong Kong (China)  0.2
20 Jul 2021 03:30 Chai Wan Hong Kong (China)  0.2
20 Jul 2021 03:30 Sau Mau Ping Hong Kong (China)  0.2
20 Jul 2021 03:30 Hok Tsui Wan Hong Kong (China)  0.2
20 Jul 2021 03:30 Chik Sha Hong Kong (China)  0.2
20 Jul 2021 03:30 Hang Hau Hong Kong (China)  0.2
22 Jul 2021 03:00 Taiping China  0.2
22 Jul 2021 03:00 Longshe China  0.2
22 Jul 2021 03:00 Dongshan China  0.2
21 Jul 2021 16:15 Xianmai China  0.2
21 Jul 2021 16:15 Dongli China  0.2
20 Jul 2021 03:30 Tei Tong Tsui Hong Kong (China)  0.2
20 Jul 2021 03:30 Tai Wan Tau Hong Kong (China)  0.2
22 Jul 2021 03:00 Tung-li China  0.2
20 Jul 2021 04:30 Houmen China  0.2
22 Jul 2021 23:30 Xiuying China  0.1
22 Jul 2021 23:30 Haian China  0.1
23 Jul 2021 00:00 Xinxing China  0.1
21 Jul 2021 22:30 Bailong China  0.1
21 Jul 2021 22:30 Jiangshan China  0.1
21 Jul 2021 22:30 Baishawan China  0.1
21 Jul 2021 22:30 Fangcheng China  0.1
21 Jul 2021 22:30 Gongche China  0.1
21 Jul 2021 22:30 Ch'i-sha China  0.1
22 Jul 2021 23:30 Haikou China  0.1
20 Jul 2021 04:15 Gangkou China  0.1
20 Jul 2021 18:00 Diancheng China  0.1
20 Jul 2021 18:00 Rudong China  0.1
20 Jul 2021 04:15 Magong China  0.1
22 Jul 2021 23:30 Boshegang China  0.1
22 Jul 2021 02:45 Dongjian China  0.1
22 Jul 2021 02:45 Houhu China  0.1
22 Jul 2021 02:45 Houhai China  0.1
22 Jul 2021 23:30 Longtang China  0.1
20 Jul 2021 14:45 Pucheng China  0.1
20 Jul 2021 14:45 Sha-fan-chieh China  0.1
20 Jul 2021 14:45 Jinxiang China  0.1
22 Jul 2021 23:30 Guangcun China  0.1
21 Jul 2021 14:00 Hsing-ch'en China  0.1
21 Jul 2021 14:00 Chendai China  0.1
21 Jul 2021 14:00 Huqiu China  0.1
21 Jul 2021 14:00 Wutian China  0.1
21 Jul 2021 14:00 Chengguanzhen China  0.1
21 Jul 2021 14:00 Guleitou China  0.1
21 Jul 2021 14:00 Gangkou China  0.1
21 Jul 2021 14:00 Hsia-mei China  0.1
21 Jul 2021 22:30 Jiangpingxu China  0.1
21 Jul 2021 22:30 Jiangping China  0.1
21 Jul 2021 22:30 Wanwei China  0.1
22 Jul 2021 23:15 Paipu China  0.1
22 Jul 2021 23:15 Baimajing China  0.1
22 Jul 2021 23:15 Hsin-ying China  0.1
22 Jul 2021 23:15 Eman China  0.1
22 Jul 2021 23:15 Taan China  0.1
22 Jul 2021 23:15 Hsin-chou China  0.1
21 Jul 2021 14:30 Chencheng China  0.1
21 Jul 2021 14:30 Hsi-pu China  0.1
21 Jul 2021 22:00 Mong Cai Vietnam  0.1
21 Jul 2021 14:00 Liu'ao China  0.1
21 Jul 2021 13:45 Raoping China  0.1
21 Jul 2021 13:45 Zhelin China  0.1
21 Jul 2021 13:45 Shenao China  0.1
21 Jul 2021 13:45 Nanao China  0.1
21 Jul 2021 13:45 Chelim China  0.1
21 Jul 2021 13:45 Gongkou China  0.1
21 Jul 2021 13:45 Dongshan China  0.1
22 Jul 2021 17:45 Chia-ho-ts'un Taiwan  0.1
22 Jul 2021 17:45 Fang-shan Taiwan  0.1
22 Jul 2021 17:45 Feng-chiang Taiwan  0.1
22 Jul 2021 17:45 She-liao Taiwan  0.1
22 Jul 2021 17:45 Che-cheng Taiwan  0.1
22 Jul 2021 02:00 Huangwu China  0.1
22 Jul 2021 02:00 Nayan China  0.1
22 Jul 2021 10:45 Jizhongtuo China  0.1
22 Jul 2021 10:45 Shanwei China  0.1
22 Jul 2021 10:45 Jiesheng China  0.1
21 Jul 2021 23:00 Puqian China  0.1
22 Jul 2021 17:45 Maobitou Taiwan  0.1
22 Jul 2021 17:45 Ta-kuang Taiwan  0.1
22 Jul 2021 17:45 Liu-chiu Hsu Taiwan  0.1
22 Jul 2021 17:45 T'ien-ch'ien-ts'o Taiwan  0.1
22 Jul 2021 17:45 Shui-ti-liao Taiwan  0.1
22 Jul 2021 00:15 Zhanjiang China  0.1
22 Jul 2021 00:15 Doulongcun China  0.1
20 Jul 2021 18:00 Wangchuan China  0.1
20 Jul 2021 18:00 Fengting China  0.1
20 Jul 2021 18:00 Dawu China  0.1
20 Jul 2021 18:00 Fengwei China  0.1
20 Jul 2021 18:00 Hsiao-tso China  0.1
20 Jul 2021 18:00 Zhongmen China  0.1
21 Jul 2021 14:15 Gongqiancun China  0.1
21 Jul 2021 14:00 Shentu China  0.1
21 Jul 2021 14:15 Siwei China  0.1
21 Jul 2021 14:15 Huanglong China  0.1
21 Jul 2021 14:15 Houzhai China  0.1
21 Jul 2021 14:15 Dahao China  0.1
21 Jul 2021 14:15 Aotou China  0.1
21 Jul 2021 14:15 Daitou China  0.1
21 Jul 2021 14:15 Guangao China  0.1
21 Jul 2021 14:45 Sidu China  0.1
21 Jul 2021 14:45 Ssu-tu China  0.1
20 Jul 2021 02:30 Tianqian China  0.1
20 Jul 2021 02:30 Zhelang China  0.1
22 Jul 2021 23:15 Qianshan China  0.1
21 Jul 2021 12:30 Donghong China  0.1
21 Jul 2021 12:30 Jinghai China  0.1
21 Jul 2021 12:30 Ch'ao-yang-hsien China  0.1
21 Jul 2021 12:30 Haimen China  0.1
22 Jul 2021 16:30 Hou-ta-ts'o Taiwan  0.1
22 Jul 2021 16:30 Tung-chiang Taiwan  0.1
22 Jul 2021 16:30 Wu-lung Taiwan  0.1
21 Jul 2021 13:45 Jiuzhen China  0.1
21 Jul 2021 13:45 Chihu China  0.1
22 Jul 2021 21:00 Ta-lin-pu Taiwan  0.1
22 Jul 2021 21:00 I-jen Taiwan  0.1
22 Jul 2021 08:45 Shuidong China  0.1
22 Jul 2021 08:45 Ch'i-ching China  0.1
22 Jul 2021 08:45 Dianbai China  0.1
22 Jul 2021 08:45 Danchang China  0.1
22 Jul 2021 08:45 Magang China  0.1
20 Jul 2021 07:45 Fugong China  0.1
20 Jul 2021 07:45 Haicang China  0.1
20 Jul 2021 07:45 Guankou China  0.1
20 Jul 2021 07:45 Gangwei China  0.1
20 Jul 2021 07:45 Songyu China  0.1
20 Jul 2021 07:45 Hsing-lin China  0.1
20 Jul 2021 07:45 Xucuo China  0.1
20 Jul 2021 07:45 Gulangyu China  0.1
20 Jul 2021 07:45 Xiamen China  0.1
20 Jul 2021 07:45 Dianqian China  0.1
20 Jul 2021 07:45 Jiangtou China  0.1
20 Jul 2021 07:45 Hecuo China  0.1
20 Jul 2021 07:45 Liuwudian China  0.1
20 Jul 2021 08:15 Chen-hai China  0.1
20 Jul 2021 08:15 Daomei China  0.1
20 Jul 2021 08:15 Zhenhai China  0.1
21 Jul 2021 23:00 Vinh Thuc Vietnam  0.1
22 Jul 2021 08:45 Hai-lu China  0.1
21 Jul 2021 23:00 Cai Kien Vietnam  0.1
21 Jul 2021 23:00 Cot Doai Vietnam  0.1
22 Jul 2021 08:45 Meilu China  0.1
22 Jul 2021 16:30 Kao-hsiung Taiwan  0.1
21 Jul 2021 22:30 Jinhe China  0.1
21 Jul 2021 13:00 Shantou China  0.1
22 Jul 2021 14:30 Kuei-shan Taiwan  0.1
22 Jul 2021 14:30 Hung-nan-li Taiwan  0.1
21 Jul 2021 23:00 Wai-lo China  0.1