Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
19 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 Taiwan, China
Exposed population No people in Category 1 or higher
Maximum wind speed 112 km/h
Maximum storm surge 0.8 m (20 Jul 15:15 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
GFS Current 112 km/h 0.8 m 223 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 3.9 million can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 19 Jul 2021 18:00 UTC
CategoryCountryPopulation 
Tropical StormTaiwan, China3,916,341
+
Taiwan3,592,800 
China323,541 

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 18:00 122 -
- - - - - Taiwan, China
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 19 Jul 2021 18:00 UTC
LevelCountryPopulation 
250-500 mmChina383,752 
100-250 mmChina, Vietnam, Philippines, Laos18,411,378
+
China11,599,307 
Vietnam963 
Laos19,899 
Philippines6,791,207 
50-100 mmChina, Vietnam, Laos, Thailand, Philippines, Cambodia15,478,448
+
China9,186,419 
Vietnam819,418 
Laos1,036,312 
Thailand74,226 
Philippines4,335,684 
Cambodia26,385 

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 18:00 556 18.8 million
- - - China, Vietnam, Laos, Thailand, Philippines, Cambodia




Impact estimation for the next 72h
TOP

StormSurge

0.8 m

The maximum Storm surge height is  0.8m in Chengcun, China. This height is estimated for 20 Jul 2021 15:15 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 19 Jul 2021 18:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
20 Jul 2021 15:15 Chengcun China  0.8
20 Jul 2021 15:15 Santouzui China  0.8
20 Jul 2021 15:15 Hsi-t'ou China  0.8
20 Jul 2021 15:15 Lengzilin China  0.8
20 Jul 2021 15:15 Pinggang China  0.8
20 Jul 2021 15:15 Jiangcheng China  0.8
20 Jul 2021 15:15 Baipu China  0.8
19 Jul 2021 18:30 Luewei China  0.7
19 Jul 2021 18:30 Shalan China  0.7
19 Jul 2021 18:30 Shadi China  0.7
19 Jul 2021 18:30 Dalangwan China  0.7
20 Jul 2021 09:15 Beidou China  0.7
20 Jul 2021 09:15 Chen-hai China  0.7
20 Jul 2021 09:15 Shen-ching China  0.7
20 Jul 2021 05:15 Dayang China  0.6
20 Jul 2021 05:15 Guanghai China  0.6
19 Jul 2021 18:45 Tiantou China  0.6
19 Jul 2021 18:45 Tonggu China  0.6
20 Jul 2021 07:30 Dagou China  0.6
20 Jul 2021 07:30 Hsin-chou China  0.6
20 Jul 2021 06:15 Doushan China  0.5
20 Jul 2021 06:15 Chixi China  0.5
22 Jul 2021 07:00 Bailong China  0.4
22 Jul 2021 07:00 Beimu China  0.4
22 Jul 2021 07:00 Yong'an China  0.4
22 Jul 2021 07:00 Shankou China  0.4
22 Jul 2021 07:00 Yingluo China  0.4
19 Jul 2021 19:45 Mashan China  0.4
19 Jul 2021 19:45 Pingsha China  0.4
19 Jul 2021 20:15 Meige China  0.4
19 Jul 2021 20:15 Doumen China  0.4
21 Jul 2021 21:30 Guanjing China  0.4
21 Jul 2021 21:30 Hsi-ch'ang-hsu China  0.4
21 Jul 2021 21:30 Hsi-ch'ang China  0.4
21 Jul 2021 21:30 Shagang China  0.4
22 Jul 2021 01:30 Caotan China  0.4
22 Jul 2021 01:30 Longtousha China  0.4
22 Jul 2021 01:30 Yingzai China  0.4
21 Jul 2021 21:00 Longmen China  0.4
21 Jul 2021 21:00 Dafanpo China  0.4
21 Jul 2021 21:00 Hsi-niu-chiao China  0.4
21 Jul 2021 21:00 Pingshan China  0.4
19 Jul 2021 18:30 Baijiao China  0.4
19 Jul 2021 18:30 San-tsao China  0.4
19 Jul 2021 18:30 Nanping China  0.4
19 Jul 2021 18:30 Macau Macau (China)  0.4
19 Jul 2021 18:30 Taipa Macau (China)  0.4
19 Jul 2021 18:30 Coloane Macau (China)  0.4
21 Jul 2021 21:45 Beihai China  0.4
21 Jul 2021 21:45 Dangjiang China  0.4
21 Jul 2021 21:45 Gaode China  0.4
21 Jul 2021 21:45 Guchengling China  0.4
21 Jul 2021 21:45 Qianjiang China  0.4
20 Jul 2021 06:15 Huangchong China  0.4
20 Jul 2021 06:15 Mei-ko China  0.4
19 Jul 2021 19:00 Xiaolin China  0.3
22 Jul 2021 12:00 San Shah China  0.3
22 Jul 2021 12:00 Gaoshan China  0.3
22 Jul 2021 12:00 Ta-ch'iu China  0.3
22 Jul 2021 12:00 Beicuo China  0.3
22 Jul 2021 12:00 Guanjing China  0.3
22 Jul 2021 12:00 Cao Yu China  0.3
22 Jul 2021 12:00 Qingfeng China  0.3
22 Jul 2021 12:00 Pingtan China  0.3
19 Jul 2021 21:15 Ching-an China  0.3
20 Jul 2021 14:30 Shangyang China  0.3
21 Jul 2021 20:15 Gongche China  0.3
21 Jul 2021 20:15 Ch'i-sha China  0.3
19 Jul 2021 19:00 Xiazha China  0.3
19 Jul 2021 19:00 Maogang China  0.3
19 Jul 2021 19:00 Heung chau China  0.3
19 Jul 2021 18:15 Cuihengcun China  0.3
19 Jul 2021 18:15 Ch'i-ao China  0.3
21 Jul 2021 21:15 Bailong China  0.3
21 Jul 2021 21:15 Jiangshan China  0.3
21 Jul 2021 21:15 Baishawan China  0.3
21 Jul 2021 21:15 Fangcheng China  0.3
19 Jul 2021 18:00 Qishan China  0.3
20 Jul 2021 17:30 Diancheng China  0.3
20 Jul 2021 17:30 Rudong China  0.3
19 Jul 2021 23:00 Yuen Long Hong Kong (China)  0.3
19 Jul 2021 23:00 Tai Po Hong Kong (China)  0.3
19 Jul 2021 23:00 Tai Po Industrial Estate Hong Kong (China)  0.3
19 Jul 2021 23:00 Fung Yuen Hong Kong (China)  0.3
19 Jul 2021 23:00 Dabu Hong Kong (China)  0.3
19 Jul 2021 23:00 Sha Tau Kok China  0.3
19 Jul 2021 23:00 Cheung Kang Hong Kong (China)  0.3
19 Jul 2021 23:00 Imtin China  0.3
19 Jul 2021 23:00 Cheung Wo Hong Kong (China)  0.3
19 Jul 2021 23:00 Pak Sha Au Hong Kong (China)  0.3
19 Jul 2021 23:00 Long Ke Hong Kong (China)  0.3
19 Jul 2021 23:00 Khitschhung China  0.3
22 Jul 2021 04:30 Ch'i-shui China  0.3
22 Jul 2021 04:30 Haikang China  0.3
20 Jul 2021 12:00 Min-chung China  0.3
20 Jul 2021 12:00 Wan-ch'ing-sha China  0.3
20 Jul 2021 12:00 Cheng'anwei China  0.3
21 Jul 2021 21:15 Mong Cai Vietnam  0.3
21 Jul 2021 21:15 Jiangpingxu China  0.3
21 Jul 2021 21:15 Jiangping China  0.3
21 Jul 2021 21:15 Wanwei China  0.3
19 Jul 2021 23:00 Cheung Sha Wan Hong Kong (China)  0.2
19 Jul 2021 23:00 Tsz Wa Chan Hong Kong (China)  0.2
19 Jul 2021 23:00 Yau Ma Po Hong Kong (China)  0.2
19 Jul 2021 23:00 Sai Kung Hong Kong (China)  0.2
19 Jul 2021 18:00 Wanshan China  0.2
19 Jul 2021 18:00 Fan Kwai Tong Hong Kong (China)  0.2
19 Jul 2021 18:00 Nantou China  0.2
20 Jul 2021 08:30 Huangge China  0.2
20 Jul 2021 08:30 Jiang'ouwei China  0.2
20 Jul 2021 08:30 Fumunchai China  0.2
20 Jul 2021 08:30 Fumuntschai China  0.2
20 Jul 2021 08:30 Baihao China  0.2
20 Jul 2021 08:30 Taiping China  0.2
20 Jul 2021 08:30 Sha-ching China  0.2
20 Jul 2021 08:30 Heping China  0.2
19 Jul 2021 18:00 Lajiwei China  0.2
21 Jul 2021 06:45 Ma-hsieh China  0.2
21 Jul 2021 06:45 Badongxu China  0.2
21 Jul 2021 06:45 Potou China  0.2
21 Jul 2021 06:45 Bengtang China  0.2
21 Jul 2021 06:45 Baisha China  0.2
21 Jul 2021 06:45 Shaoyao China  0.2
21 Jul 2021 06:45 Xingyou China  0.2
21 Jul 2021 06:45 Huangpo China  0.2
21 Jul 2021 06:45 Chiu-wu-ch'uan China  0.2
19 Jul 2021 21:30 Houtian China  0.2
19 Jul 2021 18:00 Tai Long Wan Hong Kong (China)  0.2
19 Jul 2021 18:00 Shekou China  0.2
19 Jul 2021 18:00 Lau Fau Sha Hong Kong (China)  0.2
19 Jul 2021 22:45 Dapeng China  0.2
19 Jul 2021 22:45 Taipang China  0.2
19 Jul 2021 22:45 Shagang China  0.2
19 Jul 2021 22:45 Aotou China  0.2
22 Jul 2021 05:00 Liu-sha-ying China  0.2
19 Jul 2021 18:00 Chiu-chieh China  0.2
19 Jul 2021 18:00 Ngau Kwu Long Hong Kong (China)  0.2
19 Jul 2021 18:00 Castle Peak New Town Hong Kong (China)  0.2
19 Jul 2021 18:00 Tuen Mun Hong Kong (China)  0.2
19 Jul 2021 18:15 Ham Tin Hong Kong (China)  0.2
19 Jul 2021 23:00 Luzui China  0.2
22 Jul 2021 04:30 Shuiwei China  0.2
22 Jul 2021 04:30 Liusha China  0.2
22 Jul 2021 04:30 Mai-ch'en-hsu China  0.2
19 Jul 2021 20:45 Houmen China  0.2
19 Jul 2021 22:15 Hsia-yung China  0.2
19 Jul 2021 22:15 Renshan China  0.2
19 Jul 2021 22:15 Jen-shan China  0.2
19 Jul 2021 22:30 Fanhe China  0.2
19 Jul 2021 22:30 Pinghai China  0.2
21 Jul 2021 22:00 Dong Cay Vietnam  0.2
21 Jul 2021 22:00 Dang Noi Vietnam  0.2
21 Jul 2021 22:00 Dam Ha Vietnam  0.2
21 Jul 2021 22:00 Cai Kien Vietnam  0.2
19 Jul 2021 19:00 Yuen Long Hong Kong (China)  0.2
19 Jul 2021 19:00 Sz Pak Hong Kong (China)  0.2
21 Jul 2021 22:15 Cot Doai Vietnam  0.2
21 Jul 2021 22:15 Vinh Thuc Vietnam  0.2
22 Jul 2021 04:00 Taiping China  0.2
22 Jul 2021 04:00 Longshe China  0.2
22 Jul 2021 04:00 Dongshan China  0.2
20 Jul 2021 23:00 Shuidong China  0.2
20 Jul 2021 23:00 Ch'i-ching China  0.2
20 Jul 2021 23:00 Dianbai China  0.2
20 Jul 2021 23:00 Danchang China  0.2
20 Jul 2021 23:00 Magang China  0.2
22 Jul 2021 04:00 Xianmai China  0.2
22 Jul 2021 04:00 Dongli China  0.2
22 Jul 2021 04:00 Tung-li China  0.2
19 Jul 2021 23:30 Nam Wan Hong Kong (China)  0.2
19 Jul 2021 23:30 Hoi Pa Hong Kong (China)  0.2
19 Jul 2021 23:30 Lo Tik Wan Hong Kong (China)  0.2
19 Jul 2021 23:30 Tsuen Wan Hong Kong (China)  0.2
19 Jul 2021 23:30 Lo So Shing Hong Kong (China)  0.2
19 Jul 2021 23:30 Ha Kwai Chung Hong Kong (China)  0.2
19 Jul 2021 23:30 Pok Fu Lam Hong Kong (China)  0.2
19 Jul 2021 23:30 Wa Fu Estate Hong Kong (China)  0.2
19 Jul 2021 23:30 Kennedy Town Hong Kong (China)  0.2
19 Jul 2021 23:30 Aberdeen Hong Kong (China)  0.2
19 Jul 2021 23:30 Won Hang Hong Kong (China)  0.2
19 Jul 2021 23:30 Tain Sha Tsui Hong Kong (China)  0.2
19 Jul 2021 23:30 Central Hong Kong (China)  0.2
19 Jul 2021 23:30 Kowloon Hong Kong (China)  0.2
19 Jul 2021 23:30 Wan Chai Hong Kong (China)  0.2
19 Jul 2021 23:30 Chung Hom Kok Hong Kong (China)  0.2
19 Jul 2021 23:30 North Point Hong Kong (China)  0.2
19 Jul 2021 23:30 Chek Chue Hong Kong (China)  0.2
19 Jul 2021 23:30 Crocodile Hill Hong Kong (China)  0.2
22 Jul 2021 00:45 Maichen China  0.2
19 Jul 2021 21:00 Tai Tam Hong Kong (China)  0.2
19 Jul 2021 21:00 Stanley Hong Kong (China)  0.2
19 Jul 2021 21:00 San Wan Ho Shau Hong Kong (China)  0.2
19 Jul 2021 21:00 Yau Tong Hong Kong (China)  0.2
19 Jul 2021 21:00 Rennie's Mill Hong Kong (China)  0.2
19 Jul 2021 21:00 A Kung Ngam Hong Kong (China)  0.2
19 Jul 2021 21:00 Chai Wan Hong Kong (China)  0.2
19 Jul 2021 21:00 Sau Mau Ping Hong Kong (China)  0.2
19 Jul 2021 21:00 Hok Tsui Wan Hong Kong (China)  0.2
19 Jul 2021 21:00 Chik Sha Hong Kong (China)  0.2
19 Jul 2021 21:00 Hang Hau Hong Kong (China)  0.2
19 Jul 2021 21:00 Tei Tong Tsui Hong Kong (China)  0.2
19 Jul 2021 21:00 Tai Wan Tau Hong Kong (China)  0.2
19 Jul 2021 20:30 Magong China  0.2
22 Jul 2021 00:15 Qiaotou China  0.1
22 Jul 2021 00:15 Xinxing China  0.1
19 Jul 2021 22:30 Pucheng China  0.1
19 Jul 2021 22:30 Sha-fan-chieh China  0.1
19 Jul 2021 22:30 Jinxiang China  0.1
22 Jul 2021 01:15 Xiuying China  0.1
22 Jul 2021 01:15 Haikou China  0.1
22 Jul 2021 03:30 Dongjian China  0.1
22 Jul 2021 03:30 Houhu China  0.1
22 Jul 2021 03:30 Houhai China  0.1
22 Jul 2021 00:45 Haian China  0.1
22 Jul 2021 16:30 Chia-ho-ts'un Taiwan  0.1
22 Jul 2021 16:30 Fang-shan Taiwan  0.1
22 Jul 2021 16:30 Feng-chiang Taiwan  0.1
22 Jul 2021 16:30 She-liao Taiwan  0.1
22 Jul 2021 16:30 Che-cheng Taiwan  0.1
22 Jul 2021 01:00 Boshegang China  0.1
22 Jul 2021 16:30 Maobitou Taiwan  0.1
22 Jul 2021 16:30 Ta-kuang Taiwan  0.1
22 Jul 2021 16:30 Liu-chiu Hsu Taiwan  0.1
22 Jul 2021 01:00 Puqian China  0.1
22 Jul 2021 01:00 Longtang China  0.1
22 Jul 2021 16:45 T'ien-ch'ien-ts'o Taiwan  0.1
22 Jul 2021 16:45 Shui-ti-liao Taiwan  0.1
22 Jul 2021 03:00 Huangwu China  0.1
22 Jul 2021 03:00 Nayan China  0.1
19 Jul 2021 21:15 Jizhongtuo China  0.1
19 Jul 2021 21:15 Shanwei China  0.1
22 Jul 2021 01:15 Qianshan China  0.1
22 Jul 2021 13:15 Jiesheng China  0.1
22 Jul 2021 00:15 Guangcun China  0.1
19 Jul 2021 21:30 Tianqian China  0.1
19 Jul 2021 21:45 Gangkou China  0.1
22 Jul 2021 16:45 Hou-ta-ts'o Taiwan  0.1
22 Jul 2021 16:45 Tung-chiang Taiwan  0.1
22 Jul 2021 16:45 Wu-lung Taiwan  0.1
21 Jul 2021 23:45 Ban Sen Vietnam  0.1
21 Jul 2021 13:45 Hai-lu China  0.1
21 Jul 2021 13:45 Meilu China  0.1
22 Jul 2021 16:45 Ta-lin-pu Taiwan  0.1
22 Jul 2021 16:45 I-jen Taiwan  0.1
22 Jul 2021 02:30 Doulongcun China  0.1
20 Jul 2021 18:30 Wangchuan China  0.1
20 Jul 2021 18:30 Fengting China  0.1
20 Jul 2021 18:30 Dawu China  0.1
20 Jul 2021 18:30 Fengwei China  0.1
20 Jul 2021 18:30 Hsiao-tso China  0.1
20 Jul 2021 18:30 Zhongmen China  0.1
22 Jul 2021 00:30 Eman China  0.1
20 Jul 2021 06:45 Dahao China  0.1
20 Jul 2021 06:45 Aotou China  0.1
20 Jul 2021 06:45 Daitou China  0.1
20 Jul 2021 06:45 Guangao China  0.1
20 Jul 2021 06:45 Siwei China  0.1
20 Jul 2021 06:45 Houzhai China  0.1
22 Jul 2021 02:00 Paipu China  0.1
22 Jul 2021 02:00 Baimajing China  0.1
22 Jul 2021 02:00 Hsin-ying China  0.1
22 Jul 2021 02:00 Taan China  0.1
22 Jul 2021 02:00 Hsin-chou China  0.1
19 Jul 2021 18:15 Chiang-t'ien China  0.1
22 Jul 2021 16:45 Kao-hsiung Taiwan  0.1
19 Jul 2021 18:15 Guhuai China  0.1
19 Jul 2021 18:15 Chang-chiang China  0.1
22 Jul 2021 16:15 Kuei-shan Taiwan  0.1
22 Jul 2021 16:15 Hung-nan-li Taiwan  0.1
22 Jul 2021 00:45 Zhanjiang China  0.1
20 Jul 2021 06:45 Zhelang China  0.1
21 Jul 2021 14:15 Huanglong China  0.1
21 Jul 2021 14:15 Zhelin China  0.1
22 Jul 2021 01:45 Jinhe China  0.1
22 Jul 2021 16:45 K'o-tzu-liao Taiwan  0.1
22 Jul 2021 01:30 Wai-lo China  0.1
20 Jul 2021 05:45 Donghong China  0.1
20 Jul 2021 05:45 Jinghai China  0.1
20 Jul 2021 05:45 Ch'ao-yang-hsien China  0.1
20 Jul 2021 05:45 Haimen China  0.1
21 Jul 2021 13:45 Raoping 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 16:30 Yung-an-ts'un Taiwan  0.1
21 Jul 2021 08:00 Fugong China  0.1
21 Jul 2021 08:00 Haicang China  0.1
21 Jul 2021 08:00 Gangwei China  0.1
21 Jul 2021 08:00 Songyu China  0.1
21 Jul 2021 08:00 Hsing-lin China  0.1
21 Jul 2021 08:00 Xucuo China  0.1
21 Jul 2021 08:00 Gulangyu China  0.1
21 Jul 2021 08:00 Xiamen China  0.1
21 Jul 2021 08:00 Chen-hai China  0.1
21 Jul 2021 08:00 Daomei China  0.1
21 Jul 2021 08:00 Dianqian China  0.1
21 Jul 2021 08:00 Jiangtou China  0.1
21 Jul 2021 08:00 Zhenhai China  0.1
21 Jul 2021 08:00 Hecuo China  0.1
21 Jul 2021 08:00 Liuwudian China  0.1
19 Jul 2021 18:00 Chin-feng China  0.1
19 Jul 2021 18:00 Wuhang China  0.1
21 Jul 2021 18:15 Jieshi China  0.1
21 Jul 2021 18:15 Hudong China  0.1