Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
20 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
Exposed population 30 thousand in Category 1 or higher
Maximum wind speed 137 km/h
Maximum storm surge 0.8 m (20 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 137 km/h 0.8 m 272 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 30 thousand in Category 1 strength or higher (see SSHS)



Wind exposed population - AoIs

Estimations based on the bulletin of 20 Jul 2021 06:00 UTC
CategoryCountryPopulation 
CAT. 1China27,447 
Tropical StormChina, Vietnam2,978,622
+
China2,977,653 
Vietnam968 

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 06:00 173 30 thousand
- - - - China, Vietnam
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 20 Jul 2021 06:00 UTC
LevelCountryPopulation 
750-1000 mmChina5,392 
500-750 mmChina266,417 
250-500 mmChina6,028,604 
100-250 mmChina, Vietnam9,053,626
+
China9,012,055 
Vietnam41,571 
50-100 mmChina, Hong Kong, Macao, Vietnam, Laos17,669,162
+
China15,756,379 
Hong Kong867,035 
Macao579,516 
Vietnam466,228 
Laos02 

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 06:00 815 15.4 million
- China, Hong Kong, Macao, Vietnam, Laos




Impact estimation for the next 72h
TOP

StormSurge

0.8 m

The maximum Storm surge height is  0.8m in Beidou, China. This height is estimated for 20 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 20 Jul 2021 06:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
20 Jul 2021 11:15 Beidou China  0.8
20 Jul 2021 11:15 Chen-hai China  0.8
20 Jul 2021 11:15 Shen-ching China  0.8
20 Jul 2021 09:15 Luewei China  0.8
20 Jul 2021 06:00 Shalan China  0.7
20 Jul 2021 06:00 Dayang China  0.7
20 Jul 2021 06:00 Dalangwan China  0.7
20 Jul 2021 06:00 Guanghai China  0.7
20 Jul 2021 13:15 Jiangcheng China  0.6
20 Jul 2021 13:15 Baipu China  0.6
20 Jul 2021 13:15 Dagou China  0.6
20 Jul 2021 13:15 Hsin-chou China  0.6
20 Jul 2021 13:15 Pinggang China  0.6
23 Jul 2021 01:15 San Shah China  0.6
23 Jul 2021 01:15 Gaoshan China  0.6
23 Jul 2021 01:15 Ta-ch'iu China  0.6
23 Jul 2021 01:15 Beicuo China  0.6
23 Jul 2021 01:15 Guanjing China  0.6
23 Jul 2021 01:15 Cao Yu China  0.6
23 Jul 2021 01:15 Qingfeng China  0.6
23 Jul 2021 01:15 Pingtan China  0.6
20 Jul 2021 07:15 Shadi China  0.6
20 Jul 2021 16:15 Chengcun China  0.5
20 Jul 2021 16:15 Santouzui China  0.5
20 Jul 2021 16:15 Hsi-t'ou China  0.5
20 Jul 2021 16:15 Lengzilin China  0.5
20 Jul 2021 06:30 Tiantou China  0.5
20 Jul 2021 06:30 Tonggu China  0.5
20 Jul 2021 06:00 Doushan China  0.5
20 Jul 2021 06:00 Chixi China  0.5
20 Jul 2021 10:00 Meige China  0.5
20 Jul 2021 10:00 Mashan China  0.5
20 Jul 2021 10:00 Pingsha China  0.5
20 Jul 2021 10:00 Doumen China  0.5
23 Jul 2021 03:00 Paipu China  0.4
23 Jul 2021 03:00 Baimajing China  0.4
23 Jul 2021 03:00 Hsin-ying China  0.4
23 Jul 2021 03:00 Eman China  0.4
23 Jul 2021 03:00 Taan China  0.4
23 Jul 2021 03:00 Hsin-chou China  0.4
23 Jul 2021 00:45 Houtian China  0.4
20 Jul 2021 12:45 Huangchong China  0.4
20 Jul 2021 12:45 Mei-ko China  0.4
22 Jul 2021 00:00 Yingluo China  0.4
22 Jul 2021 00:00 Caotan China  0.4
22 Jul 2021 00:00 Longtousha China  0.4
22 Jul 2021 00:00 Yingzai China  0.4
22 Jul 2021 07:00 Gongche China  0.4
22 Jul 2021 07:00 Maoling China  0.4
22 Jul 2021 07:00 Kangxiling China  0.4
22 Jul 2021 07:00 Longmen China  0.4
22 Jul 2021 07:00 Jiuya China  0.4
22 Jul 2021 07:00 Dafanpo China  0.4
22 Jul 2021 07:00 Pingshan China  0.4
20 Jul 2021 12:30 Ching-an China  0.4
20 Jul 2021 12:30 Xiaolin China  0.4
20 Jul 2021 06:00 Cuihengcun China  0.4
20 Jul 2021 06:00 Min-chung China  0.4
20 Jul 2021 06:00 Xiazha China  0.4
20 Jul 2021 06:00 Qishan China  0.4
20 Jul 2021 06:00 Cheng'anwei China  0.4
20 Jul 2021 06:00 Ch'i-ao China  0.4
20 Jul 2021 12:30 Wan-ch'ing-sha China  0.4
22 Jul 2021 01:15 Yong'an China  0.3
22 Jul 2021 01:15 Shankou China  0.3
20 Jul 2021 10:00 Baijiao China  0.3
20 Jul 2021 10:00 San-tsao China  0.3
20 Jul 2021 10:00 Nanping China  0.3
20 Jul 2021 10:00 Macau Macau (China)  0.3
20 Jul 2021 10:00 Taipa Macau (China)  0.3
20 Jul 2021 10:00 Coloane Macau (China)  0.3
23 Jul 2021 06:00 Nanluo China  0.3
23 Jul 2021 06:00 Haitou China  0.3
20 Jul 2021 18:30 Yuen Long Hong Kong (China)  0.3
20 Jul 2021 18:30 Tai Po Hong Kong (China)  0.3
20 Jul 2021 18:30 Tai Po Industrial Estate Hong Kong (China)  0.3
20 Jul 2021 18:30 Fung Yuen Hong Kong (China)  0.3
20 Jul 2021 18:30 Dabu Hong Kong (China)  0.3
20 Jul 2021 18:30 Sha Tau Kok China  0.3
20 Jul 2021 18:30 Cheung Kang Hong Kong (China)  0.3
20 Jul 2021 18:30 Imtin China  0.3
20 Jul 2021 18:30 Cheung Wo Hong Kong (China)  0.3
20 Jul 2021 18:30 Pak Sha Au Hong Kong (China)  0.3
20 Jul 2021 18:30 Long Ke Hong Kong (China)  0.3
20 Jul 2021 18:30 Khitschhung China  0.3
20 Jul 2021 18:30 Cheung Sha Wan Hong Kong (China)  0.3
20 Jul 2021 18:30 Tsz Wa Chan Hong Kong (China)  0.3
20 Jul 2021 18:30 Yau Ma Po Hong Kong (China)  0.3
20 Jul 2021 18:30 Sai Kung Hong Kong (China)  0.3
20 Jul 2021 06:00 Heping China  0.3
23 Jul 2021 06:00 Haiwei China  0.3
20 Jul 2021 10:15 Maogang China  0.3
20 Jul 2021 10:15 Heung chau China  0.3
22 Jul 2021 00:15 Bailong China  0.3
22 Jul 2021 00:15 Beimu China  0.3
20 Jul 2021 10:30 Huangge China  0.3
20 Jul 2021 10:30 Jiang'ouwei China  0.3
20 Jul 2021 10:30 Fumunchai China  0.3
20 Jul 2021 10:30 Fumuntschai China  0.3
20 Jul 2021 10:30 Baihao China  0.3
20 Jul 2021 10:30 Taiping China  0.3
20 Jul 2021 10:30 Sha-ching China  0.3
22 Jul 2021 22:45 Ch'i-shui China  0.3
22 Jul 2021 22:45 Haikang China  0.3
22 Jul 2021 22:45 Liu-sha-ying China  0.3
22 Jul 2021 22:45 Shuiwei China  0.3
22 Jul 2021 23:00 Liusha China  0.3
22 Jul 2021 23:00 Mai-ch'en-hsu China  0.3
20 Jul 2021 18:30 Dapeng China  0.2
20 Jul 2021 18:30 Taipang China  0.2
20 Jul 2021 18:30 Shagang China  0.2
20 Jul 2021 18:30 Aotou China  0.2
22 Jul 2021 23:00 Maichen China  0.2
20 Jul 2021 09:30 Wanshan China  0.2
20 Jul 2021 06:00 Fan Kwai Tong Hong Kong (China)  0.2
20 Jul 2021 06:00 Nantou China  0.2
22 Jul 2021 23:15 Xinxing China  0.2
20 Jul 2021 16:45 Luzui China  0.2
22 Jul 2021 23:00 Qiaotou China  0.2
23 Jul 2021 06:00 Changhua China  0.2
22 Jul 2021 23:00 Guangcun China  0.2
22 Jul 2021 13:30 Beihai China  0.2
22 Jul 2021 13:30 Gaode China  0.2
22 Jul 2021 13:30 Guchengling China  0.2
20 Jul 2021 06:00 Lajiwei China  0.2
22 Jul 2021 23:00 Haian China  0.2
22 Jul 2021 22:45 Xiuying China  0.2
20 Jul 2021 21:00 Chiu-chieh China  0.2
20 Jul 2021 21:00 Shekou China  0.2
23 Jul 2021 06:00 Beili China  0.2
23 Jul 2021 06:00 Duntou China  0.2
20 Jul 2021 17:00 Hsia-yung China  0.2
20 Jul 2021 17:00 Renshan China  0.2
23 Jul 2021 06:00 Basuo China  0.2
22 Jul 2021 22:45 Haikou China  0.2
20 Jul 2021 10:30 Aberdeen Hong Kong (China)  0.2
20 Jul 2021 10:30 Won Hang Hong Kong (China)  0.2
20 Jul 2021 10:30 Tain Sha Tsui Hong Kong (China)  0.2
20 Jul 2021 10:30 Central Hong Kong (China)  0.2
20 Jul 2021 10:30 Kowloon Hong Kong (China)  0.2
20 Jul 2021 10:30 Wan Chai Hong Kong (China)  0.2
20 Jul 2021 10:30 Chung Hom Kok Hong Kong (China)  0.2
20 Jul 2021 10:30 North Point Hong Kong (China)  0.2
20 Jul 2021 10:30 Chek Chue Hong Kong (China)  0.2
20 Jul 2021 10:30 Crocodile Hill Hong Kong (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
20 Jul 2021 16:45 Jen-shan China  0.2
20 Jul 2021 08:00 Castle Peak New Town Hong Kong (China)  0.2
20 Jul 2021 08:00 Tuen Mun Hong Kong (China)  0.2
22 Jul 2021 22:45 Boshegang China  0.2
22 Jul 2021 23:00 Longtang China  0.2
20 Jul 2021 06:00 Tai Long Wan Hong Kong (China)  0.2
20 Jul 2021 06:00 Lau Fau Sha Hong Kong (China)  0.2
20 Jul 2021 18:45 Ngau Kwu Long Hong Kong (China)  0.2
20 Jul 2021 17:30 Fanhe China  0.2
20 Jul 2021 17:30 Pinghai China  0.2
20 Jul 2021 10:00 Sz Pak Hong Kong (China)  0.2
20 Jul 2021 10:00 Nam Wan Hong Kong (China)  0.2
20 Jul 2021 10:00 Hoi Pa Hong Kong (China)  0.2
20 Jul 2021 10:00 Lo Tik Wan Hong Kong (China)  0.2
20 Jul 2021 10:00 Tsuen Wan Hong Kong (China)  0.2
20 Jul 2021 10:00 Lo So Shing Hong Kong (China)  0.2
20 Jul 2021 10:00 Ha Kwai Chung Hong Kong (China)  0.2
20 Jul 2021 10:00 Pok Fu Lam Hong Kong (China)  0.2
20 Jul 2021 10:00 Wa Fu Estate Hong Kong (China)  0.2
20 Jul 2021 10:00 Kennedy Town Hong Kong (China)  0.2
22 Jul 2021 23:00 Puqian China  0.2
20 Jul 2021 17:00 Houmen China  0.2
22 Jul 2021 00:30 Hsi-ch'ang-hsu China  0.2
22 Jul 2021 00:30 Hsi-ch'ang China  0.2
22 Jul 2021 00:30 Shagang China  0.2
22 Jul 2021 00:30 Dangjiang China  0.2
22 Jul 2021 00:30 Qianjiang China  0.2
20 Jul 2021 17:30 Magong China  0.2
20 Jul 2021 17:30 Jizhongtuo China  0.2
20 Jul 2021 11:30 Ham Tin Hong Kong (China)  0.2
20 Jul 2021 17:45 Shangyang China  0.2
22 Jul 2021 23:00 Qianshan China  0.2
23 Jul 2021 03:45 Taiping China  0.2
23 Jul 2021 03:45 Xianmai China  0.2
23 Jul 2021 03:45 Longshe China  0.2
23 Jul 2021 03:45 Dongli China  0.2
20 Jul 2021 19:00 Yuen Long Hong Kong (China)  0.2
21 Jul 2021 10:30 Ma-hsieh China  0.2
21 Jul 2021 10:30 Badongxu China  0.2
21 Jul 2021 10:30 Potou China  0.2
21 Jul 2021 10:30 Bengtang China  0.2
21 Jul 2021 10:30 Baisha China  0.2
21 Jul 2021 10:30 Shaoyao China  0.2
21 Jul 2021 10:30 Xingyou China  0.2
21 Jul 2021 10:30 Huangpo China  0.2
21 Jul 2021 10:30 Chiu-wu-ch'uan China  0.2
23 Jul 2021 03:30 Dongshan China  0.2
23 Jul 2021 03:30 Tung-li China  0.2
20 Jul 2021 17:15 Gangkou China  0.2
20 Jul 2021 14:00 Pucheng China  0.1
20 Jul 2021 14:00 Sha-fan-chieh China  0.1
20 Jul 2021 14:00 Jinxiang China  0.1
20 Jul 2021 17:00 Jiesheng China  0.1
20 Jul 2021 17:00 Tianqian China  0.1
20 Jul 2021 17:00 Zhelang China  0.1
20 Jul 2021 17:00 Shanwei China  0.1
23 Jul 2021 06:00 Gancheng China  0.1
23 Jul 2021 06:00 Longyou China  0.1
20 Jul 2021 10:00 Boao China  0.1
23 Jul 2021 03:00 Dongjian China  0.1
23 Jul 2021 03:00 Houhu China  0.1
23 Jul 2021 03:00 Houhai China  0.1
23 Jul 2021 03:45 Chia-ho-ts'un Taiwan  0.1
23 Jul 2021 03:45 Fang-shan Taiwan  0.1
23 Jul 2021 03:45 Feng-chiang Taiwan  0.1
23 Jul 2021 03:45 She-liao Taiwan  0.1
23 Jul 2021 03:45 Che-cheng Taiwan  0.1
22 Jul 2021 23:00 Jinhe China  0.1
22 Jul 2021 23:00 Wai-lo China  0.1
23 Jul 2021 04:00 Liu-chiu Hsu Taiwan  0.1
23 Jul 2021 04:00 Maobitou Taiwan  0.1
23 Jul 2021 04:00 Ta-kuang Taiwan  0.1
23 Jul 2021 06:00 Banqiao China  0.1
20 Jul 2021 16:45 Shenquan China  0.1
23 Jul 2021 03:45 T'ien-ch'ien-ts'o Taiwan  0.1
23 Jul 2021 03:45 Shui-ti-liao Taiwan  0.1
20 Jul 2021 09:00 Fugong China  0.1
20 Jul 2021 09:00 Haicang China  0.1
20 Jul 2021 09:00 Gangwei China  0.1
20 Jul 2021 09:00 Songyu China  0.1
20 Jul 2021 09:00 Hsing-lin China  0.1
20 Jul 2021 09:00 Xucuo China  0.1
20 Jul 2021 09:00 Gulangyu China  0.1
20 Jul 2021 09:00 Xiamen China  0.1
20 Jul 2021 09:00 Chen-hai China  0.1
20 Jul 2021 09:00 Daomei China  0.1
20 Jul 2021 09:00 Dianqian China  0.1
20 Jul 2021 09:00 Jiangtou China  0.1
20 Jul 2021 09:00 Zhenhai China  0.1
20 Jul 2021 09:00 Hecuo China  0.1
20 Jul 2021 09:00 Liuwudian China  0.1
23 Jul 2021 03:45 Hou-ta-ts'o Taiwan  0.1
23 Jul 2021 03:45 Tung-chiang Taiwan  0.1
23 Jul 2021 03:45 Wu-lung Taiwan  0.1
20 Jul 2021 07:15 Tuy Hoa Vietnam  0.1
20 Jul 2021 09:00 Guankou China  0.1
23 Jul 2021 03:30 Ta-lin-pu Taiwan  0.1
23 Jul 2021 03:30 I-jen Taiwan  0.1
21 Jul 2021 16:30 Shuidong China  0.1
21 Jul 2021 16:30 Ch'i-ching China  0.1
21 Jul 2021 16:30 Dianbai China  0.1
21 Jul 2021 16:30 Danchang China  0.1
21 Jul 2021 16:30 Magang China  0.1
21 Jul 2021 07:00 Dahao China  0.1
21 Jul 2021 07:00 Aotou China  0.1
21 Jul 2021 07:00 Daitou China  0.1
21 Jul 2021 07:00 Guangao China  0.1
21 Jul 2021 07:00 Siwei China  0.1
21 Jul 2021 07:00 Houzhai China  0.1
23 Jul 2021 02:30 Huangwu China  0.1
23 Jul 2021 02:30 Nayan China  0.1
23 Jul 2021 03:45 Kao-hsiung Taiwan  0.1
20 Jul 2021 16:45 Huanglong China  0.1
20 Jul 2021 16:45 Zhelin China  0.1
23 Jul 2021 03:00 Kuei-shan Taiwan  0.1
23 Jul 2021 03:00 Hung-nan-li Taiwan  0.1
21 Jul 2021 16:00 Meilu China  0.1
21 Jul 2021 16:00 Hai-lu China  0.1
21 Jul 2021 14:30 Donghong China  0.1
21 Jul 2021 14:30 Jinghai China  0.1
21 Jul 2021 14:30 Haimen China  0.1
21 Jul 2021 07:00 Diancheng China  0.1
21 Jul 2021 07:00 Rudong China  0.1
23 Jul 2021 03:45 K'o-tzu-liao Taiwan  0.1