Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
21 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 No people in Category 1 or higher
Maximum wind speed 61 km/h
Maximum storm surge 0.6 m (23 Jul 21:15 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 61 km/h 0.6 m 328 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 1.9 million can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 21 Jul 2021 00:00 UTC
CategoryCountryPopulation 
Tropical StormChina1,864,322 

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 06:00 137 Few people
- - - - China
GREEN 8 20 Jul 2021 12:00 137 40 thousand
- - - - China
GREEN 9 20 Jul 2021 18:00 104 -
- - - - - China
GREEN 10 21 Jul 2021 00:00 108 -
- - - - - China
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 21 Jul 2021 00:00 UTC
LevelCountryPopulation 
500-750 mmChina2,216 
250-500 mmChina3,119,380 
100-250 mmChina, Vietnam, Laos10,148,674
+
China10,147,277 
Vietnam1,244 
Laos153 
50-100 mmChina, Vietnam, Laos15,942,165
+
China15,861,489 
Vietnam64,646 
Laos16,029 

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 06:00 272 Few people
- - - - China, Hong Kong
Blue 8 20 Jul 2021 12:00 189 440 thousand
- - - - China
Blue 9 20 Jul 2021 18:00 228 630 thousand
- - - - China
Blue 10 21 Jul 2021 00:00 950 13.3 million
- - China, Vietnam, Laos




Impact estimation for the next 72h
TOP

StormSurge

0.6 m

The maximum Storm surge height is  0.6m in San Shah, China. This height is estimated for 23 Jul 2021 21:15 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 21 Jul 2021 00:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
23 Jul 2021 21:15 San Shah China  0.6
23 Jul 2021 21:15 Gaoshan China  0.6
23 Jul 2021 21:15 Ta-ch'iu China  0.6
23 Jul 2021 21:15 Beicuo China  0.6
23 Jul 2021 21:15 Guanjing China  0.6
23 Jul 2021 21:15 Cao Yu China  0.6
23 Jul 2021 21:15 Qingfeng China  0.6
23 Jul 2021 21:15 Pingtan China  0.6
23 Jul 2021 20:30 Houtian China  0.4
22 Jul 2021 07:00 Yingluo China  0.3
22 Jul 2021 07:00 Caotan China  0.3
22 Jul 2021 07:00 Longtousha China  0.3
22 Jul 2021 07:00 Yingzai China  0.3
22 Jul 2021 07:30 Yong'an China  0.3
22 Jul 2021 07:30 Shankou China  0.3
23 Jul 2021 06:30 Paipu China  0.3
23 Jul 2021 06:30 Baimajing China  0.3
23 Jul 2021 06:30 Hsin-ying China  0.3
23 Jul 2021 06:30 Eman China  0.3
23 Jul 2021 06:30 Taan China  0.3
23 Jul 2021 06:30 Hsin-chou China  0.3
21 Jul 2021 00:00 Beidou China  0.3
21 Jul 2021 00:00 Chen-hai China  0.3
21 Jul 2021 00:00 Shen-ching China  0.3
22 Jul 2021 22:15 Ch'i-shui China  0.3
22 Jul 2021 22:15 Haikang China  0.3
21 Jul 2021 01:15 Yuen Long Hong Kong (China)  0.3
21 Jul 2021 01:15 Tai Po Hong Kong (China)  0.3
21 Jul 2021 01:15 Tai Po Industrial Estate Hong Kong (China)  0.3
21 Jul 2021 01:15 Fung Yuen Hong Kong (China)  0.3
21 Jul 2021 01:15 Dabu Hong Kong (China)  0.3
21 Jul 2021 01:15 Sha Tau Kok China  0.3
21 Jul 2021 01:15 Cheung Kang Hong Kong (China)  0.3
21 Jul 2021 01:15 Imtin China  0.3
21 Jul 2021 01:15 Cheung Wo Hong Kong (China)  0.3
21 Jul 2021 01:15 Pak Sha Au Hong Kong (China)  0.3
21 Jul 2021 01:15 Long Ke Hong Kong (China)  0.3
21 Jul 2021 01:15 Khitschhung China  0.3
22 Jul 2021 08:45 Bailong China  0.3
22 Jul 2021 08:45 Beimu China  0.3
21 Jul 2021 01:15 Cheung Sha Wan Hong Kong (China)  0.3
21 Jul 2021 01:15 Tsz Wa Chan Hong Kong (China)  0.3
21 Jul 2021 01:15 Yau Ma Po Hong Kong (China)  0.3
21 Jul 2021 01:15 Sai Kung Hong Kong (China)  0.3
21 Jul 2021 00:00 Chixi China  0.3
21 Jul 2021 00:00 Huangchong China  0.3
21 Jul 2021 00:00 Meige China  0.3
21 Jul 2021 00:00 Mashan China  0.3
21 Jul 2021 00:00 Mei-ko China  0.3
21 Jul 2021 00:00 Pingsha China  0.3
21 Jul 2021 00:00 Doumen China  0.3
21 Jul 2021 00:00 Cuihengcun China  0.3
21 Jul 2021 00:00 Min-chung China  0.3
21 Jul 2021 00:00 Xiazha China  0.3
21 Jul 2021 00:00 Qishan China  0.3
21 Jul 2021 00:00 Cheng'anwei China  0.3
21 Jul 2021 00:00 Ch'i-ao China  0.3
21 Jul 2021 00:00 Chengcun China  0.3
21 Jul 2021 00:00 Santouzui China  0.3
21 Jul 2021 00:00 Hsi-t'ou China  0.3
21 Jul 2021 00:00 Lengzilin China  0.3
21 Jul 2021 00:00 Pinggang China  0.3
21 Jul 2021 00:00 Jiangcheng China  0.3
21 Jul 2021 00:00 Baipu China  0.3
21 Jul 2021 00:00 Wan-ch'ing-sha China  0.3
21 Jul 2021 00:00 Ching-an China  0.3
21 Jul 2021 00:00 Xiaolin China  0.3
21 Jul 2021 09:00 Huangge China  0.2
21 Jul 2021 09:00 Jiang'ouwei China  0.2
21 Jul 2021 09:00 Fumunchai China  0.2
21 Jul 2021 09:00 Fumuntschai China  0.2
21 Jul 2021 09:00 Baihao China  0.2
21 Jul 2021 09:00 Taiping China  0.2
21 Jul 2021 09:00 Sha-ching China  0.2
21 Jul 2021 09:00 Heping China  0.2
22 Jul 2021 21:30 Liu-sha-ying China  0.2
22 Jul 2021 19:00 Shuiwei China  0.2
22 Jul 2021 19:00 Liusha China  0.2
22 Jul 2021 19:00 Mai-ch'en-hsu China  0.2
21 Jul 2021 03:45 Ma-hsieh China  0.2
21 Jul 2021 03:45 Badongxu China  0.2
21 Jul 2021 03:45 Potou China  0.2
21 Jul 2021 03:45 Bengtang China  0.2
21 Jul 2021 03:45 Baisha China  0.2
21 Jul 2021 03:45 Shaoyao China  0.2
21 Jul 2021 03:45 Xingyou China  0.2
21 Jul 2021 03:45 Huangpo China  0.2
21 Jul 2021 03:45 Chiu-wu-ch'uan China  0.2
21 Jul 2021 04:45 Tiantou China  0.2
22 Jul 2021 08:00 Gongche China  0.2
22 Jul 2021 08:00 Maoling China  0.2
22 Jul 2021 08:00 Kangxiling China  0.2
22 Jul 2021 08:00 Longmen China  0.2
22 Jul 2021 08:00 Jiuya China  0.2
22 Jul 2021 08:00 Dafanpo China  0.2
22 Jul 2021 08:00 Pingshan China  0.2
21 Jul 2021 01:00 Dapeng China  0.2
21 Jul 2021 01:00 Taipang China  0.2
21 Jul 2021 01:00 Shagang China  0.2
21 Jul 2021 01:15 Aotou China  0.2
23 Jul 2021 12:30 Gancheng China  0.2
23 Jul 2021 12:30 Banqiao China  0.2
23 Jul 2021 12:30 Longyou China  0.2
23 Jul 2021 12:30 Lingtou China  0.2
21 Jul 2021 01:30 Luzui China  0.2
22 Jul 2021 19:30 Maichen China  0.2
21 Jul 2021 04:30 Tonggu China  0.2
22 Jul 2021 17:45 Taiping China  0.2
22 Jul 2021 17:45 Xianmai China  0.2
22 Jul 2021 17:45 Longshe China  0.2
22 Jul 2021 17:45 Dongli China  0.2
23 Jul 2021 12:30 Basuo China  0.2
21 Jul 2021 05:30 Dagou China  0.2
21 Jul 2021 05:30 Hsin-chou China  0.2
21 Jul 2021 00:15 Nantou China  0.2
21 Jul 2021 04:30 Baijiao China  0.2
21 Jul 2021 04:30 San-tsao China  0.2
21 Jul 2021 04:30 Nanping China  0.2
21 Jul 2021 04:30 Macau Macau (China)  0.2
21 Jul 2021 04:30 Taipa Macau (China)  0.2
21 Jul 2021 04:30 Coloane Macau (China)  0.2
21 Jul 2021 07:45 Maogang China  0.2
21 Jul 2021 07:45 Heung chau China  0.2
22 Jul 2021 17:45 Dongshan China  0.2
23 Jul 2021 12:30 Foluo China  0.2
22 Jul 2021 17:30 Tung-li China  0.2
21 Jul 2021 01:45 Chiu-chieh China  0.2
21 Jul 2021 01:45 Shekou China  0.2
21 Jul 2021 01:45 Castle Peak New Town Hong Kong (China)  0.2
21 Jul 2021 01:45 Tuen Mun Hong Kong (China)  0.2
23 Jul 2021 12:00 Duntou China  0.2
21 Jul 2021 07:00 Luewei China  0.2
21 Jul 2021 07:00 Shalan China  0.2
21 Jul 2021 07:00 Shadi China  0.2
21 Jul 2021 07:00 Dalangwan China  0.2
23 Jul 2021 09:30 Beili China  0.2
23 Jul 2021 09:30 Changhua China  0.2
21 Jul 2021 05:15 Diancheng China  0.2
21 Jul 2021 05:15 Rudong China  0.2
22 Jul 2021 20:00 Qiaotou China  0.2
22 Jul 2021 19:45 Xiuying China  0.2
23 Jul 2021 06:30 Nanluo China  0.2
23 Jul 2021 06:30 Haitou China  0.2
22 Jul 2021 19:30 Haikou China  0.2
22 Jul 2021 20:00 Haian China  0.2
21 Jul 2021 07:30 Dayang China  0.2
21 Jul 2021 07:30 Guanghai China  0.2
22 Jul 2021 20:30 Xinxing China  0.2
21 Jul 2021 16:45 Fan Kwai Tong Hong Kong (China)  0.2
21 Jul 2021 00:15 Doushan China  0.2
22 Jul 2021 19:30 Boshegang China  0.2
21 Jul 2021 05:45 Shuidong China  0.2
21 Jul 2021 05:45 Ch'i-ching China  0.2
21 Jul 2021 05:45 Dianbai China  0.2
21 Jul 2021 05:45 Danchang China  0.2
21 Jul 2021 05:45 Magang China  0.2
22 Jul 2021 19:30 Longtang China  0.2
21 Jul 2021 15:15 Hsia-yung China  0.2
21 Jul 2021 15:15 Renshan China  0.2
21 Jul 2021 15:15 Jen-shan China  0.2
21 Jul 2021 15:15 Fanhe China  0.2
21 Jul 2021 15:15 Pinghai China  0.2
22 Jul 2021 16:30 Dongjian China  0.2
22 Jul 2021 16:30 Houhu China  0.2
22 Jul 2021 16:30 Houhai China  0.2
22 Jul 2021 19:45 Puqian China  0.1
22 Jul 2021 21:15 Guangcun China  0.1
22 Jul 2021 16:00 Huangwu China  0.1
22 Jul 2021 16:00 Nayan China  0.1
21 Jul 2021 00:15 Tai Long Wan Hong Kong (China)  0.1
21 Jul 2021 00:15 Lau Fau Sha Hong Kong (China)  0.1
21 Jul 2021 17:30 Lajiwei China  0.1
21 Jul 2021 00:15 Ngau Kwu Long Hong Kong (China)  0.1
21 Jul 2021 00:30 Houmen China  0.1
21 Jul 2021 00:00 Ham Tin Hong Kong (China)  0.1
22 Jul 2021 13:30 Zhanjiang China  0.1
22 Jul 2021 13:30 Doulongcun China  0.1
22 Jul 2021 19:45 Qianshan China  0.1
21 Jul 2021 00:45 Yuen Long Hong Kong (China)  0.1
21 Jul 2021 00:45 Sz Pak Hong Kong (China)  0.1
21 Jul 2021 00:15 Gangkou China  0.1
23 Jul 2021 07:00 Haiwei China  0.1
21 Jul 2021 00:00 Magong China  0.1
23 Jul 2021 18:45 Sanya China  0.1
23 Jul 2021 18:45 Anyou China  0.1
23 Jul 2021 18:45 Yulin China  0.1
23 Jul 2021 18:45 Tiandu China  0.1
21 Jul 2021 00:00 Jizhongtuo China  0.1
21 Jul 2021 16:15 Aberdeen Hong Kong (China)  0.1
21 Jul 2021 16:15 Won Hang Hong Kong (China)  0.1
21 Jul 2021 16:15 Tain Sha Tsui Hong Kong (China)  0.1
21 Jul 2021 16:15 Central Hong Kong (China)  0.1
21 Jul 2021 16:15 Kowloon Hong Kong (China)  0.1
21 Jul 2021 16:15 Wan Chai Hong Kong (China)  0.1
21 Jul 2021 16:15 Chung Hom Kok Hong Kong (China)  0.1
21 Jul 2021 16:15 North Point Hong Kong (China)  0.1
21 Jul 2021 16:15 Chek Chue Hong Kong (China)  0.1
21 Jul 2021 16:15 Crocodile Hill Hong Kong (China)  0.1
21 Jul 2021 16:15 Tai Tam Hong Kong (China)  0.1
21 Jul 2021 16:15 Stanley Hong Kong (China)  0.1
21 Jul 2021 16:15 San Wan Ho Shau Hong Kong (China)  0.1
21 Jul 2021 16:15 Yau Tong Hong Kong (China)  0.1
21 Jul 2021 16:15 Rennie's Mill Hong Kong (China)  0.1
21 Jul 2021 16:15 A Kung Ngam Hong Kong (China)  0.1
21 Jul 2021 16:15 Chai Wan Hong Kong (China)  0.1
21 Jul 2021 16:15 Sau Mau Ping Hong Kong (China)  0.1
21 Jul 2021 16:15 Hok Tsui Wan Hong Kong (China)  0.1
21 Jul 2021 16:15 Chik Sha Hong Kong (China)  0.1
21 Jul 2021 16:15 Hang Hau Hong Kong (China)  0.1
21 Jul 2021 16:15 Tei Tong Tsui Hong Kong (China)  0.1
21 Jul 2021 16:15 Tai Wan Tau Hong Kong (China)  0.1
21 Jul 2021 04:15 Shangyang China  0.1
21 Jul 2021 00:00 Shanwei China  0.1
21 Jul 2021 03:45 Wanshan China  0.1
22 Jul 2021 15:45 Hai-lu China  0.1
21 Jul 2021 06:15 Jiesheng China  0.1
21 Jul 2021 06:15 Tianqian China  0.1
21 Jul 2021 06:15 Zhelang China  0.1
22 Jul 2021 14:30 Meilu China  0.1
22 Jul 2021 00:15 Nam Wan Hong Kong (China)  0.1
22 Jul 2021 00:15 Hoi Pa Hong Kong (China)  0.1
22 Jul 2021 00:15 Lo Tik Wan Hong Kong (China)  0.1
22 Jul 2021 00:15 Tsuen Wan Hong Kong (China)  0.1
22 Jul 2021 00:15 Lo So Shing Hong Kong (China)  0.1
22 Jul 2021 00:15 Ha Kwai Chung Hong Kong (China)  0.1
22 Jul 2021 00:15 Pok Fu Lam Hong Kong (China)  0.1
22 Jul 2021 00:15 Wa Fu Estate Hong Kong (China)  0.1
22 Jul 2021 00:15 Kennedy Town Hong Kong (China)  0.1
22 Jul 2021 09:45 Gaode China  0.1
22 Jul 2021 09:45 Guchengling China  0.1
21 Jul 2021 07:00 Ch'ao-yang-hsien China  0.1
21 Jul 2021 07:00 Haimen China  0.1
21 Jul 2021 07:00 Shantou 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 13:30 Donghong China  0.1
21 Jul 2021 13:30 Jinghai China  0.1
21 Jul 2021 13:45 Jieshi China  0.1
21 Jul 2021 13:45 Hudong China  0.1
22 Jul 2021 10:30 Beihai China  0.1
21 Jul 2021 12:45 Siwei China  0.1
21 Jul 2021 12:45 Huanglong China  0.1
21 Jul 2021 12:45 Houzhai China  0.1
21 Jul 2021 12:45 Zhelin China  0.1
23 Jul 2021 22:45 Liu-chiu Hsu Taiwan  0.1
23 Jul 2021 22:45 Chia-ho-ts'un Taiwan  0.1
23 Jul 2021 22:45 Fang-shan Taiwan  0.1
23 Jul 2021 22:45 Feng-chiang Taiwan  0.1
21 Jul 2021 12:30 Shenao China  0.1
21 Jul 2021 12:30 Nanao China  0.1
21 Jul 2021 12:30 Chelim China  0.1
21 Jul 2021 12:30 Gongkou China  0.1
23 Jul 2021 04:00 She-liao Taiwan  0.1
23 Jul 2021 04:00 Che-cheng Taiwan  0.1
21 Jul 2021 13:45 Hsing-ch'en China  0.1
21 Jul 2021 13:45 Chendai China  0.1
21 Jul 2021 13:45 Huqiu China  0.1
21 Jul 2021 13:45 Wutian China  0.1
21 Jul 2021 13:45 Chengguanzhen China  0.1
21 Jul 2021 13:45 Guleitou China  0.1
21 Jul 2021 13:45 Gangkou China  0.1
21 Jul 2021 13:45 Hsia-mei China  0.1
23 Jul 2021 04:00 Maobitou Taiwan  0.1
23 Jul 2021 04:00 Ta-kuang Taiwan  0.1
23 Jul 2021 22:30 Hou-ta-ts'o Taiwan  0.1
23 Jul 2021 22:30 Tung-chiang Taiwan  0.1
23 Jul 2021 22:30 Wu-lung Taiwan  0.1
23 Jul 2021 23:15 T'ien-ch'ien-ts'o Taiwan  0.1
23 Jul 2021 21:30 Yung-lung Taiwan  0.1
23 Jul 2021 21:30 Hsin-chiang Taiwan  0.1
23 Jul 2021 21:30 Fu-hsing Taiwan  0.1
23 Jul 2021 21:30 Pu-tai Taiwan  0.1
23 Jul 2021 21:30 Chang-t'an Taiwan  0.1
23 Jul 2021 21:30 Wu-nan Taiwan  0.1
23 Jul 2021 04:15 Shui-ti-liao Taiwan  0.1
23 Jul 2021 23:15 Ta-lin-pu Taiwan  0.1
21 Jul 2021 14:15 Chencheng China  0.1
21 Jul 2021 14:15 Hsi-pu China  0.1
23 Jul 2021 22:00 Kao-hsiung Taiwan  0.1
23 Jul 2021 23:30 I-jen Taiwan  0.1
23 Jul 2021 18:30 Yacheng China  0.1
23 Jul 2021 23:15 Kuei-shan Taiwan  0.1
23 Jul 2021 23:15 Hung-nan-li Taiwan  0.1
21 Jul 2021 22:00 Jiazi China  0.1
21 Jul 2021 22:00 Changqingwei China  0.1