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 HWRF
Exposed countries China
Exposed population 5 thousand in Category 1 or higher
Maximum wind speed 130 km/h
Maximum storm surge 1.0 m (20 Jul 08:45 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 130 km/h 1.0 m 290 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)

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Wind

137 km/h

Up to 5 thousand in Category 1 strength or higher (see SSHS)



Wind exposed population - AoIs

Estimations based on the bulletin of 20 Jul 2021 00:00 UTC
CategoryCountryPopulation 
CAT. 1China5,272 
Tropical StormChina5,065,410 

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 00:00 133 5 thousand
- - - - China
Download:





Impact estimation for the next 72h
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Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 20 Jul 2021 00:00 UTC
LevelCountryPopulation 
500-750 mmChina23,831 
250-500 mmChina2,295,381 
100-250 mmChina, Hong Kong, Macao20,456,147
+
China19,876,279 
Hong Kong215 
Macao579,652 
50-100 mmChina, Hong Kong, Vietnam14,110,119
+
China13,993,403 
Hong Kong115,417 
Vietnam1,298 

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 00:00 655 22.8 million
- - China, Hong Kong, Macao, Vietnam




Impact estimation for the next 72h
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StormSurge

1 m

The maximum Storm surge height is  1.0m in Beidou, China. This height is estimated for 20 Jul 2021 08:45 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 20 Jul 2021 00:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
20 Jul 2021 08:45 Beidou China  1.0
20 Jul 2021 08:45 Chen-hai China  1.0
20 Jul 2021 08:45 Shen-ching China  1.0
22 Jul 2021 21:15 Paipu China  0.9
22 Jul 2021 21:15 Baimajing China  0.9
22 Jul 2021 21:15 Hsin-ying China  0.9
22 Jul 2021 21:15 Eman China  0.9
22 Jul 2021 21:15 Taan China  0.9
22 Jul 2021 21:15 Hsin-chou China  0.9
20 Jul 2021 06:30 Luewei China  0.9
23 Jul 2021 00:00 San Shah China  0.8
23 Jul 2021 00:00 Gaoshan China  0.8
23 Jul 2021 00:00 Ta-ch'iu China  0.8
23 Jul 2021 00:00 Beicuo China  0.8
23 Jul 2021 00:00 Guanjing China  0.8
23 Jul 2021 00:00 Cao Yu China  0.8
23 Jul 2021 00:00 Qingfeng China  0.8
23 Jul 2021 00:00 Pingtan China  0.8
20 Jul 2021 07:00 Shalan China  0.7
20 Jul 2021 05:45 Dayang China  0.7
20 Jul 2021 05:45 Dalangwan China  0.7
20 Jul 2021 05:45 Guanghai China  0.7
20 Jul 2021 01:00 Shadi China  0.6
20 Jul 2021 07:00 Dagou China  0.6
20 Jul 2021 07:00 Hsin-chou China  0.6
20 Jul 2021 10:00 Jiangcheng China  0.5
20 Jul 2021 10:00 Baipu China  0.5
23 Jul 2021 00:00 Houtian China  0.5
20 Jul 2021 04:00 Tiantou China  0.5
20 Jul 2021 04:00 Tonggu China  0.5
20 Jul 2021 06:15 Doushan China  0.5
20 Jul 2021 06:15 Chixi China  0.5
20 Jul 2021 09:45 Pinggang China  0.5
20 Jul 2021 15:45 Chengcun China  0.5
20 Jul 2021 15:45 Santouzui China  0.5
20 Jul 2021 15:45 Hsi-t'ou China  0.5
20 Jul 2021 15:45 Lengzilin China  0.5
20 Jul 2021 03:30 Mashan China  0.4
20 Jul 2021 03:30 Pingsha China  0.4
22 Jul 2021 01:15 Yingluo China  0.4
22 Jul 2021 01:15 Caotan China  0.4
22 Jul 2021 01:15 Longtousha China  0.4
22 Jul 2021 01:15 Yingzai China  0.4
22 Jul 2021 00:45 Yong'an China  0.4
22 Jul 2021 00:45 Shankou China  0.4
20 Jul 2021 03:45 Meige China  0.4
20 Jul 2021 03:45 Doumen China  0.4
20 Jul 2021 04:30 Nanping China  0.4
20 Jul 2021 04:30 Xiazha China  0.4
20 Jul 2021 04:30 Maogang 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
20 Jul 2021 04:30 Heung chau China  0.4
20 Jul 2021 06:30 Cuihengcun China  0.4
20 Jul 2021 06:30 Min-chung China  0.4
20 Jul 2021 06:30 Qishan China  0.4
20 Jul 2021 06:30 Cheng'anwei China  0.4
20 Jul 2021 06:30 Ch'i-ao China  0.4
20 Jul 2021 06:15 Wan-ch'ing-sha China  0.4
20 Jul 2021 03:45 Baijiao China  0.3
20 Jul 2021 03:45 San-tsao China  0.3
20 Jul 2021 06:00 Huangchong China  0.3
20 Jul 2021 06:00 Mei-ko China  0.3
22 Jul 2021 21:15 Guangcun China  0.3
22 Jul 2021 21:15 Xinxing China  0.3
20 Jul 2021 05:45 Ching-an China  0.3
20 Jul 2021 05:45 Xiaolin China  0.3
20 Jul 2021 06:15 Heping China  0.3
20 Jul 2021 09:15 Huangge China  0.3
20 Jul 2021 09:15 Jiang'ouwei China  0.3
20 Jul 2021 09:15 Fumunchai China  0.3
20 Jul 2021 09:15 Fumuntschai China  0.3
20 Jul 2021 09:15 Baihao China  0.3
20 Jul 2021 09:15 Taiping China  0.3
20 Jul 2021 09:15 Sha-ching China  0.3
22 Jul 2021 15:45 Ch'i-shui China  0.3
22 Jul 2021 15:45 Haikang China  0.3
22 Jul 2021 15:45 Liu-sha-ying China  0.3
20 Jul 2021 12:15 Yuen Long Hong Kong (China)  0.3
20 Jul 2021 12:15 Tai Po Hong Kong (China)  0.3
20 Jul 2021 12:15 Tai Po Industrial Estate Hong Kong (China)  0.3
20 Jul 2021 12:15 Fung Yuen Hong Kong (China)  0.3
20 Jul 2021 12:15 Dabu Hong Kong (China)  0.3
20 Jul 2021 12:15 Sha Tau Kok China  0.3
20 Jul 2021 12:15 Cheung Kang Hong Kong (China)  0.3
20 Jul 2021 12:15 Imtin China  0.3
20 Jul 2021 12:15 Cheung Wo Hong Kong (China)  0.3
20 Jul 2021 12:15 Pak Sha Au Hong Kong (China)  0.3
20 Jul 2021 12:15 Long Ke Hong Kong (China)  0.3
20 Jul 2021 12:15 Khitschhung China  0.3
20 Jul 2021 04:45 Fan Kwai Tong Hong Kong (China)  0.3
20 Jul 2021 04:45 Nantou China  0.3
20 Jul 2021 12:15 Cheung Sha Wan Hong Kong (China)  0.3
20 Jul 2021 12:15 Tsz Wa Chan Hong Kong (China)  0.3
20 Jul 2021 12:15 Yau Ma Po Hong Kong (China)  0.3
20 Jul 2021 12:15 Sai Kung Hong Kong (China)  0.3
20 Jul 2021 03:15 Wanshan China  0.2
22 Jul 2021 15:45 Shuiwei China  0.2
20 Jul 2021 03:45 Lajiwei China  0.2
22 Jul 2021 16:00 Liusha China  0.2
22 Jul 2021 16:00 Mai-ch'en-hsu China  0.2
21 Jul 2021 11:45 Ma-hsieh China  0.2
21 Jul 2021 11:45 Badongxu China  0.2
21 Jul 2021 11:45 Potou China  0.2
21 Jul 2021 11:45 Bengtang China  0.2
21 Jul 2021 11:45 Baisha China  0.2
21 Jul 2021 11:45 Shaoyao China  0.2
21 Jul 2021 11:45 Xingyou China  0.2
21 Jul 2021 11:45 Huangpo China  0.2
21 Jul 2021 11:45 Chiu-wu-ch'uan China  0.2
20 Jul 2021 03:30 Tai Long Wan Hong Kong (China)  0.2
20 Jul 2021 03:30 Lau Fau Sha Hong Kong (China)  0.2
22 Jul 2021 16:45 Maichen China  0.2
20 Jul 2021 05:15 Shekou China  0.2
22 Jul 2021 15:30 Taiping China  0.2
22 Jul 2021 15:30 Xianmai China  0.2
22 Jul 2021 15:30 Longshe China  0.2
22 Jul 2021 15:30 Dongli China  0.2
20 Jul 2021 12:00 Dapeng China  0.2
20 Jul 2021 12:00 Taipang China  0.2
20 Jul 2021 12:00 Shagang China  0.2
20 Jul 2021 15:15 Shangyang China  0.2
22 Jul 2021 22:00 Nanluo China  0.2
22 Jul 2021 22:00 Haitou China  0.2
20 Jul 2021 11:30 Aotou China  0.2
20 Jul 2021 05:00 Chiu-chieh China  0.2
20 Jul 2021 05:00 Ngau Kwu Long Hong Kong (China)  0.2
20 Jul 2021 05:00 Castle Peak New Town Hong Kong (China)  0.2
20 Jul 2021 05:00 Tuen Mun Hong Kong (China)  0.2
20 Jul 2021 11:30 Luzui China  0.2
20 Jul 2021 05:15 Ham Tin Hong Kong (China)  0.2
22 Jul 2021 16:00 Dongshan China  0.2
22 Jul 2021 16:00 Tung-li China  0.2
22 Jul 2021 22:15 Haiwei China  0.2
20 Jul 2021 00:45 Sz Pak Hong Kong (China)  0.2
20 Jul 2021 00:45 Nam Wan Hong Kong (China)  0.2
20 Jul 2021 00:45 Hoi Pa Hong Kong (China)  0.2
20 Jul 2021 00:45 Lo Tik Wan Hong Kong (China)  0.2
20 Jul 2021 00:45 Tsuen Wan Hong Kong (China)  0.2
20 Jul 2021 00:45 Lo So Shing Hong Kong (China)  0.2
20 Jul 2021 00:45 Ha Kwai Chung Hong Kong (China)  0.2
20 Jul 2021 00:45 Pok Fu Lam Hong Kong (China)  0.2
20 Jul 2021 00:45 Wa Fu Estate Hong Kong (China)  0.2
20 Jul 2021 00:45 Kennedy Town Hong Kong (China)  0.2
20 Jul 2021 00:45 Aberdeen Hong Kong (China)  0.2
20 Jul 2021 00:45 Won Hang Hong Kong (China)  0.2
20 Jul 2021 00:45 Tain Sha Tsui Hong Kong (China)  0.2
20 Jul 2021 00:45 Central Hong Kong (China)  0.2
20 Jul 2021 00:45 Kowloon Hong Kong (China)  0.2
20 Jul 2021 00:45 Wan Chai Hong Kong (China)  0.2
20 Jul 2021 00:45 Chung Hom Kok Hong Kong (China)  0.2
20 Jul 2021 00:45 North Point Hong Kong (China)  0.2
20 Jul 2021 00:45 Chek Chue Hong Kong (China)  0.2
20 Jul 2021 00:45 Crocodile Hill Hong Kong (China)  0.2
22 Jul 2021 17:00 Qiaotou China  0.2
20 Jul 2021 20:30 Diancheng China  0.2
20 Jul 2021 20:30 Rudong China  0.2
22 Jul 2021 17:15 Haian China  0.2
22 Jul 2021 17:30 Xiuying China  0.2
22 Jul 2021 17:30 Haikou China  0.2
22 Jul 2021 17:30 Boshegang China  0.2
20 Jul 2021 03:15 Hsia-yung China  0.2
22 Jul 2021 17:30 Longtang China  0.2
20 Jul 2021 05:15 Yuen Long Hong Kong (China)  0.2
20 Jul 2021 02:00 Houmen China  0.2
20 Jul 2021 03:00 Renshan China  0.2
20 Jul 2021 03:00 Jen-shan China  0.2
20 Jul 2021 10:30 Tai Tam Hong Kong (China)  0.2
20 Jul 2021 10:30 Stanley Hong Kong (China)  0.2
20 Jul 2021 10:30 San Wan Ho Shau Hong Kong (China)  0.2
20 Jul 2021 10:30 Yau Tong Hong Kong (China)  0.2
20 Jul 2021 10:30 Rennie's Mill Hong Kong (China)  0.2
20 Jul 2021 10:30 A Kung Ngam Hong Kong (China)  0.2
20 Jul 2021 10:30 Chai Wan Hong Kong (China)  0.2
20 Jul 2021 10:30 Sau Mau Ping Hong Kong (China)  0.2
20 Jul 2021 10:30 Hok Tsui Wan Hong Kong (China)  0.2
20 Jul 2021 10:30 Chik Sha Hong Kong (China)  0.2
20 Jul 2021 10:30 Hang Hau Hong Kong (China)  0.2
20 Jul 2021 10:30 Tei Tong Tsui Hong Kong (China)  0.2
20 Jul 2021 10:30 Tai Wan Tau Hong Kong (China)  0.2
21 Jul 2021 10:00 Shuidong China  0.2
21 Jul 2021 10:00 Ch'i-ching China  0.2
21 Jul 2021 10:00 Dianbai China  0.2
21 Jul 2021 10:00 Danchang China  0.2
21 Jul 2021 10:00 Magang China  0.2
22 Jul 2021 17:45 Puqian China  0.2
22 Jul 2021 15:45 Dongjian China  0.2
22 Jul 2021 15:45 Houhu China  0.2
22 Jul 2021 15:45 Houhai China  0.2
20 Jul 2021 03:00 Magong China  0.1
20 Jul 2021 03:00 Jizhongtuo China  0.1
22 Jul 2021 17:45 Qianshan China  0.1
20 Jul 2021 03:15 Fanhe China  0.1
20 Jul 2021 03:15 Pinghai China  0.1
20 Jul 2021 02:30 Gangkou China  0.1
22 Jul 2021 01:45 Gongche China  0.1
22 Jul 2021 01:45 Maoling China  0.1
22 Jul 2021 01:45 Kangxiling China  0.1
22 Jul 2021 01:45 Longmen China  0.1
22 Jul 2021 01:45 Jiuya China  0.1
22 Jul 2021 01:45 Dafanpo China  0.1
22 Jul 2021 01:45 Pingshan China  0.1
20 Jul 2021 02:30 Jieshi China  0.1
20 Jul 2021 02:30 Hudong China  0.1
23 Jul 2021 00:00 Chia-ho-ts'un Taiwan  0.1
23 Jul 2021 00:00 Fang-shan Taiwan  0.1
23 Jul 2021 00:00 Feng-chiang Taiwan  0.1
23 Jul 2021 00:00 She-liao Taiwan  0.1
23 Jul 2021 00:00 Che-cheng Taiwan  0.1
20 Jul 2021 03:00 Shanwei China  0.1
22 Jul 2021 23:45 Liu-chiu Hsu Taiwan  0.1
20 Jul 2021 09:15 Jiesheng China  0.1
20 Jul 2021 09:15 Tianqian China  0.1
20 Jul 2021 09:15 Zhelang China  0.1
23 Jul 2021 00:00 T'ien-ch'ien-ts'o Taiwan  0.1
23 Jul 2021 00:00 Shui-ti-liao Taiwan  0.1
22 Jul 2021 15:30 Huangwu China  0.1
22 Jul 2021 15:30 Nayan China  0.1
22 Jul 2021 23:45 Maobitou Taiwan  0.1
22 Jul 2021 23:45 Ta-kuang Taiwan  0.1
23 Jul 2021 00:00 Ta-lin-pu Taiwan  0.1
23 Jul 2021 00:00 Hou-ta-ts'o Taiwan  0.1
23 Jul 2021 00:00 I-jen Taiwan  0.1
23 Jul 2021 00:00 Tung-chiang Taiwan  0.1
23 Jul 2021 00:00 Wu-lung Taiwan  0.1
20 Jul 2021 00:00 Pucheng China  0.1
20 Jul 2021 00:00 Sha-fan-chieh China  0.1
20 Jul 2021 00:00 Jinxiang China  0.1
23 Jul 2021 00:00 Yung-lung Taiwan  0.1
23 Jul 2021 00:00 Hsin-chiang Taiwan  0.1
23 Jul 2021 00:00 Fu-hsing Taiwan  0.1
23 Jul 2021 00:00 Pu-tai Taiwan  0.1
23 Jul 2021 00:00 Chang-t'an Taiwan  0.1
23 Jul 2021 00:00 Wu-nan Taiwan  0.1
23 Jul 2021 00:00 Kao-hsiung Taiwan  0.1
23 Jul 2021 00:00 Kuei-shan Taiwan  0.1
23 Jul 2021 00:00 Hung-nan-li Taiwan  0.1
20 Jul 2021 03:15 Ky Tan Vietnam  0.1
20 Jul 2021 03:15 Duc Pho Vietnam  0.1
20 Jul 2021 03:15 An Lac Vietnam  0.1
23 Jul 2021 00:00 Yung-an-ts'un Taiwan  0.1
23 Jul 2021 00:00 K'o-tzu-liao Taiwan  0.1
23 Jul 2021 00:00 Hai-pu Taiwan  0.1
22 Jul 2021 14:30 Meilu China  0.1
22 Jul 2021 14:30 Hai-lu China  0.1
23 Jul 2021 00:00 Chung-ho Taiwan  0.1
22 Jul 2021 15:15 Doulongcun China  0.1
20 Jul 2021 16:30 Dahao China  0.1
20 Jul 2021 16:30 Aotou China  0.1
20 Jul 2021 16:30 Daitou China  0.1
20 Jul 2021 16:30 Guangao China  0.1
20 Jul 2021 16:30 Siwei China  0.1
20 Jul 2021 16:30 Houzhai China  0.1
22 Jul 2021 11:30 Zhanjiang China  0.1
23 Jul 2021 00:00 Chung-ch'i Taiwan  0.1
23 Jul 2021 00:00 San-hsing Taiwan  0.1
23 Jul 2021 00:00 T'ai-hsi Taiwan  0.1
23 Jul 2021 00:00 Sha-shan Taiwan  0.1
23 Jul 2021 00:00 Wang-kung Taiwan  0.1
23 Jul 2021 00:00 An-ping Taiwan  0.1
23 Jul 2021 00:00 San-ku-ts'un Taiwan  0.1
23 Jul 2021 00:00 Hsia-lun Taiwan  0.1
23 Jul 2021 00:00 Sa-ti Taiwan  0.1
23 Jul 2021 00:00 Hai-kou Taiwan  0.1
23 Jul 2021 00:00 Chiang-chun Taiwan  0.1
21 Jul 2021 14:00 Huanglong China  0.1
21 Jul 2021 14:00 Zhelin China  0.1
22 Jul 2021 18:30 Jinhe China  0.1
22 Jul 2021 18:30 Wai-lo China  0.1
22 Jul 2021 01:00 Beimu China  0.1
20 Jul 2021 16:15 Donghong China  0.1
20 Jul 2021 16:15 Jinghai China  0.1
20 Jul 2021 16:15 Haimen China  0.1
20 Jul 2021 16:45 Fugong China  0.1
20 Jul 2021 16:45 Haicang China  0.1
20 Jul 2021 16:45 Gangwei China  0.1
20 Jul 2021 16:45 Songyu China  0.1
20 Jul 2021 16:45 Hsing-lin China  0.1
20 Jul 2021 16:45 Xucuo China  0.1
20 Jul 2021 16:45 Gulangyu China  0.1
20 Jul 2021 16:45 Xiamen China  0.1
20 Jul 2021 16:45 Chen-hai China  0.1
20 Jul 2021 16:45 Daomei China  0.1
20 Jul 2021 16:45 Dianqian China  0.1
20 Jul 2021 16:45 Jiangtou China  0.1
20 Jul 2021 16:45 Zhenhai China  0.1
20 Jul 2021 16:45 Hecuo China  0.1
20 Jul 2021 16:45 Liuwudian China  0.1
20 Jul 2021 16:45 Ch'ao-yang-hsien China  0.1
20 Jul 2021 16:45 Shantou China  0.1
23 Jul 2021 00:00 Lu-kang Taiwan  0.1