Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
18 Jul 2021 12 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 ECMWF
Exposed countries China
Exposed population No people in Category 1 or higher
Maximum wind speed 50 km/h
Maximum storm surge 0.3 m (18 Jul 17:30 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
ECMWF Current 50 km/h 0.3 m 142 mm 0.5
ECMWF Overall 72 km/h 0.8 m 923 mm 0.5

Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

TOP

Wind

72 km/h

Up to 1 thousand can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 18 Jul 2021 12:00 UTC
CategoryCountryPopulation 
Tropical StormChina1,186 

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 00:00 43 - - - - - - -
GREEN 2 18 Jul 2021 12:00 68 -
- - - - - China
Download:





Impact estimation for the next 72h
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Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 18 Jul 2021 12:00 UTC
LevelCountryPopulation 
250-500 mmChina, Philippines64,285
+
China25,063 
Philippines39,221 
100-250 mmChina, Hong Kong, Macao, Vietnam, Laos, Philippines, Cambodia10,642,098
+
China5,698,417 
Vietnam130,300 
Hong Kong1,900,464 
Macao579,652 
Laos76,515 
Philippines2,255,940 
Cambodia806 
50-100 mmChina, Taiwan, Vietnam, Hong Kong, Laos, Philippines, Thailand, Cambodia85,736,834
+
China70,501,113 
Taiwan1,542,642 
Vietnam1,673,845 
Hong Kong4,728,824 
Laos1,572,273 
Philippines4,822,610 
Thailand790,140 
Cambodia105,383 

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 00:00 100 -
- - - - - China, Vietnam, Philippines
Blue 2 18 Jul 2021 12:00 682 10.7 million
- - - China, Taiwan, Vietnam, Hong Kong, Macao, Laos, Philippines, Thailand, Cambodia




Impact estimation for the next 72h
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StormSurge

0.3 m

The maximum Storm surge height is  0.3m in Luewei, China. This height is estimated for 18 Jul 2021 17:30 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 18 Jul 2021 12:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
18 Jul 2021 17:30 Luewei China  0.3
18 Jul 2021 17:30 Shalan China  0.3
18 Jul 2021 17:30 Shadi China  0.3
18 Jul 2021 17:30 Dalangwan China  0.3
18 Jul 2021 16:00 Nanping China  0.3
18 Jul 2021 16:00 Maogang China  0.3
18 Jul 2021 16:00 Macau Macau (China)  0.3
18 Jul 2021 16:00 Taipa Macau (China)  0.3
18 Jul 2021 16:00 Coloane Macau (China)  0.3
18 Jul 2021 16:00 Heung chau China  0.3
18 Jul 2021 16:45 Xiazha China  0.3
18 Jul 2021 18:00 Dayang China  0.3
18 Jul 2021 18:00 Guanghai China  0.3
18 Jul 2021 17:30 Tiantou China  0.2
18 Jul 2021 17:30 Tonggu China  0.2
18 Jul 2021 16:30 Cuihengcun China  0.2
18 Jul 2021 16:30 Ch'i-ao China  0.2
18 Jul 2021 17:00 Qishan China  0.2
19 Jul 2021 00:00 Baijiao China  0.2
19 Jul 2021 00:00 San-tsao China  0.2
18 Jul 2021 15:45 Dapeng China  0.2
18 Jul 2021 15:45 Taipang China  0.2
18 Jul 2021 15:45 Shagang China  0.2
18 Jul 2021 15:45 Aotou China  0.2
18 Jul 2021 15:45 Luzui China  0.2
18 Jul 2021 16:30 Lajiwei China  0.2
18 Jul 2021 16:30 Fan Kwai Tong Hong Kong (China)  0.2
18 Jul 2021 14:45 Chixi China  0.2
18 Jul 2021 14:45 Pingsha China  0.2
18 Jul 2021 16:45 Nantou China  0.2
18 Jul 2021 23:30 Wanshan China  0.2
18 Jul 2021 23:30 Tai Long Wan Hong Kong (China)  0.2
18 Jul 2021 15:45 Mashan China  0.2
18 Jul 2021 15:45 Xiaolin China  0.2
18 Jul 2021 16:00 Lau Fau Sha Hong Kong (China)  0.2
18 Jul 2021 14:30 Meige China  0.2
18 Jul 2021 14:30 Doumen China  0.2
18 Jul 2021 16:00 Doushan China  0.2
18 Jul 2021 16:30 Shekou China  0.2
18 Jul 2021 16:00 Hsia-yung China  0.2
18 Jul 2021 16:00 Renshan China  0.2
18 Jul 2021 16:00 Jen-shan China  0.2
18 Jul 2021 16:00 Fanhe China  0.2
18 Jul 2021 16:00 Pinghai China  0.2
18 Jul 2021 23:30 Ngau Kwu Long Hong Kong (China)  0.2
18 Jul 2021 23:30 Ham Tin Hong Kong (China)  0.2
18 Jul 2021 17:45 Castle Peak New Town Hong Kong (China)  0.2
18 Jul 2021 17:45 Tuen Mun Hong Kong (China)  0.2
18 Jul 2021 12:00 Taiping China  0.2
18 Jul 2021 12:00 Xianmai China  0.2
18 Jul 2021 12:00 Longshe China  0.2
18 Jul 2021 12:00 Dongli China  0.2
18 Jul 2021 17:45 Chiu-chieh China  0.2
18 Jul 2021 14:00 Yuen Long Hong Kong (China)  0.1
18 Jul 2021 14:00 Tai Po Hong Kong (China)  0.1
18 Jul 2021 14:00 Tai Po Industrial Estate Hong Kong (China)  0.1
18 Jul 2021 14:00 Fung Yuen Hong Kong (China)  0.1
18 Jul 2021 14:00 Dabu Hong Kong (China)  0.1
18 Jul 2021 14:00 Sha Tau Kok China  0.1
18 Jul 2021 14:00 Cheung Kang Hong Kong (China)  0.1
18 Jul 2021 14:00 Imtin China  0.1
18 Jul 2021 14:00 Cheung Wo Hong Kong (China)  0.1
18 Jul 2021 14:00 Pak Sha Au Hong Kong (China)  0.1
18 Jul 2021 14:00 Long Ke Hong Kong (China)  0.1
18 Jul 2021 14:00 Khitschhung China  0.1
18 Jul 2021 12:00 Dongshan China  0.1
18 Jul 2021 23:00 Sz Pak Hong Kong (China)  0.1
18 Jul 2021 23:00 Nam Wan Hong Kong (China)  0.1
18 Jul 2021 23:00 Hoi Pa Hong Kong (China)  0.1
18 Jul 2021 23:00 Lo Tik Wan Hong Kong (China)  0.1
18 Jul 2021 23:00 Tsuen Wan Hong Kong (China)  0.1
18 Jul 2021 23:00 Lo So Shing Hong Kong (China)  0.1
18 Jul 2021 23:00 Ha Kwai Chung Hong Kong (China)  0.1
18 Jul 2021 23:00 Pok Fu Lam Hong Kong (China)  0.1
18 Jul 2021 23:00 Wa Fu Estate Hong Kong (China)  0.1
18 Jul 2021 23:00 Kennedy Town Hong Kong (China)  0.1
18 Jul 2021 23:00 Aberdeen Hong Kong (China)  0.1
18 Jul 2021 23:00 Cheung Sha Wan Hong Kong (China)  0.1
18 Jul 2021 23:00 Won Hang Hong Kong (China)  0.1
18 Jul 2021 23:00 Tain Sha Tsui Hong Kong (China)  0.1
18 Jul 2021 23:00 Central Hong Kong (China)  0.1
18 Jul 2021 23:00 Kowloon Hong Kong (China)  0.1
18 Jul 2021 23:00 Wan Chai Hong Kong (China)  0.1
18 Jul 2021 23:00 Tsz Wa Chan Hong Kong (China)  0.1
18 Jul 2021 23:00 Chung Hom Kok Hong Kong (China)  0.1
18 Jul 2021 23:00 North Point Hong Kong (China)  0.1
18 Jul 2021 23:00 Chek Chue Hong Kong (China)  0.1
18 Jul 2021 23:00 Crocodile Hill Hong Kong (China)  0.1
18 Jul 2021 12:00 Tung-li China  0.1
18 Jul 2021 17:30 Yuen Long Hong Kong (China)  0.1
18 Jul 2021 22:30 Min-chung China  0.1
18 Jul 2021 22:30 Cheng'anwei China  0.1
18 Jul 2021 15:30 Tai Tam Hong Kong (China)  0.1
18 Jul 2021 15:30 Stanley Hong Kong (China)  0.1
18 Jul 2021 15:30 San Wan Ho Shau Hong Kong (China)  0.1
18 Jul 2021 15:30 Yau Tong Hong Kong (China)  0.1
18 Jul 2021 15:30 Rennie's Mill Hong Kong (China)  0.1
18 Jul 2021 15:30 A Kung Ngam Hong Kong (China)  0.1
18 Jul 2021 15:30 Chai Wan Hong Kong (China)  0.1
18 Jul 2021 15:30 Sau Mau Ping Hong Kong (China)  0.1
18 Jul 2021 15:30 Hok Tsui Wan Hong Kong (China)  0.1
18 Jul 2021 15:30 Yau Ma Po Hong Kong (China)  0.1
18 Jul 2021 15:30 Sai Kung Hong Kong (China)  0.1
18 Jul 2021 15:30 Chik Sha Hong Kong (China)  0.1
18 Jul 2021 15:30 Hang Hau Hong Kong (China)  0.1
18 Jul 2021 15:30 Tei Tong Tsui Hong Kong (China)  0.1
18 Jul 2021 15:30 Tai Wan Tau Hong Kong (China)  0.1
18 Jul 2021 13:00 Tho Ngoa Vietnam  0.1
18 Jul 2021 13:00 Ly Nhon Thon Vietnam  0.1
18 Jul 2021 13:00 Dong Hoi Vietnam  0.1
18 Jul 2021 15:00 Beidou China  0.1
18 Jul 2021 15:00 Chen-hai China  0.1
18 Jul 2021 15:45 Houmen China  0.1
19 Jul 2021 00:00 Wan-ch'ing-sha China  0.1
18 Jul 2021 12:30 Guanchang China  0.1
18 Jul 2021 12:30 Jinhe China  0.1
18 Jul 2021 12:30 Wai-lo China  0.1
18 Jul 2021 13:45 Dongjian China  0.1
18 Jul 2021 13:45 Houhu China  0.1
18 Jul 2021 13:45 Houhai China  0.1
18 Jul 2021 23:15 Badongxu China  0.1
18 Jul 2021 23:15 Bengtang China  0.1
18 Jul 2021 23:15 Baisha China  0.1
18 Jul 2021 23:15 Shaoyao China  0.1
18 Jul 2021 23:15 Xingyou China  0.1
18 Jul 2021 23:15 Huangwu China  0.1
18 Jul 2021 23:15 Nayan China  0.1
18 Jul 2021 23:15 Doulongcun China  0.1
18 Jul 2021 15:45 Shen-ching China  0.1
18 Jul 2021 15:00 Huangpo China  0.1
18 Jul 2021 15:00 Chiu-wu-ch'uan China  0.1
18 Jul 2021 15:00 Meilu China  0.1
18 Jul 2021 15:00 Hai-lu China  0.1
18 Jul 2021 16:15 Xuan Moc Vietnam  0.1
18 Jul 2021 16:15 Ba Lang Vietnam  0.1
18 Jul 2021 16:15 Hoang Xa Vietnam  0.1
18 Jul 2021 13:00 Shuidong China  0.1
18 Jul 2021 13:00 Ch'i-ching China  0.1
18 Jul 2021 13:00 Dianbai China  0.1
18 Jul 2021 13:00 Danchang China  0.1
18 Jul 2021 13:00 Magang China  0.1
18 Jul 2021 14:45 Dagou China  0.1
18 Jul 2021 14:45 Hsin-chou China  0.1
18 Jul 2021 14:30 Potou China  0.1
18 Jul 2021 22:00 Jiesheng China  0.1
18 Jul 2021 22:00 Tianqian China  0.1
18 Jul 2021 22:00 Zhelang China  0.1
18 Jul 2021 18:00 Caotan China  0.1
18 Jul 2021 12:15 Diancheng China  0.1
18 Jul 2021 12:15 Rudong China  0.1
19 Jul 2021 00:00 Heping China  0.1
18 Jul 2021 15:30 Zhanjiang China  0.1
18 Jul 2021 15:30 Ma-hsieh China  0.1
18 Jul 2021 15:00 Gangkou China  0.1
18 Jul 2021 15:30 Magong China  0.1
18 Jul 2021 15:30 Jizhongtuo China  0.1
18 Jul 2021 16:15 Santouzui China  0.1
18 Jul 2021 16:15 Hsi-t'ou China  0.1
18 Jul 2021 16:15 Lengzilin China  0.1
18 Jul 2021 16:15 Pinggang China  0.1
18 Jul 2021 16:15 Jiangcheng China  0.1
18 Jul 2021 16:15 Baipu China  0.1
18 Jul 2021 16:30 Yen Cat Vietnam  0.1
18 Jul 2021 16:30 Diem Phe Vietnam  0.1
18 Jul 2021 16:30 Sam Son Vietnam  0.1
18 Jul 2021 16:30 Xa Loan Vietnam  0.1
18 Jul 2021 16:30 Dot Dong Vietnam  0.1
18 Jul 2021 16:30 Nam Son Vietnam  0.1
18 Jul 2021 19:45 Bailong China  0.1
18 Jul 2021 19:45 Beimu China  0.1
18 Jul 2021 19:45 Yong'an China  0.1
18 Jul 2021 19:45 Shankou China  0.1
18 Jul 2021 19:45 Yingluo China  0.1
18 Jul 2021 16:15 Shangyang China  0.1
18 Jul 2021 18:00 Longtousha China  0.1
18 Jul 2021 15:30 Shanwei China  0.1
18 Jul 2021 22:15 Jieshi China  0.1
18 Jul 2021 13:30 Cau Thuong Vietnam  0.1
18 Jul 2021 13:30 Hau Con Vietnam  0.1
18 Jul 2021 13:30 Con Soi Vietnam  0.1
18 Jul 2021 13:00 Donghong China  0.1
18 Jul 2021 13:00 Jinghai China  0.1
18 Jul 2021 13:00 Ch'ao-yang-hsien China  0.1
18 Jul 2021 13:00 Haimen China  0.1
18 Jul 2021 13:00 Dahao China  0.1
18 Jul 2021 13:00 Aotou China  0.1
18 Jul 2021 13:00 Daitou China  0.1
18 Jul 2021 14:15 Tap Phuc Vietnam  0.1
18 Jul 2021 14:15 Cau Lo Vietnam  0.1
18 Jul 2021 14:15 Hoa Cam Vietnam  0.1
18 Jul 2021 14:15 Hoi Thong Vietnam  0.1
18 Jul 2021 16:15 Hai Phong Vietnam  0.1
18 Jul 2021 16:15 Thuy U Vietnam  0.1
18 Jul 2021 16:15 Dai Loc Vietnam  0.1
18 Jul 2021 16:15 Quang Yen Vietnam  0.1
18 Jul 2021 16:15 Hoang Chau Vietnam  0.1
18 Jul 2021 16:15 Ca Lu Vietnam  0.1
18 Jul 2021 16:15 Xi Dua Vietnam  0.1
18 Jul 2021 13:15 Trung Thinh Vietnam  0.1
18 Jul 2021 13:15 Ha Tinh Vietnam  0.1
18 Jul 2021 13:15 Trung Nghia Vietnam  0.1
18 Jul 2021 13:15 Trung Tiet Vietnam  0.1
18 Jul 2021 16:30 Gia Luan Vietnam  0.1
18 Jul 2021 16:00 Hudong China  0.1
18 Jul 2021 16:45 Van Lam Trai Vietnam  0.1
18 Jul 2021 16:45 Con Van Vietnam  0.1
18 Jul 2021 20:45 Yingzai China  0.1
18 Jul 2021 18:15 Hsi-ch'ang-hsu China  0.1
18 Jul 2021 18:15 Hsi-ch'ang China  0.1
18 Jul 2021 18:15 Shagang China  0.1
18 Jul 2021 18:15 Beihai China  0.1
18 Jul 2021 18:15 Dangjiang China  0.1
18 Jul 2021 18:15 Gaode China  0.1
18 Jul 2021 18:15 Guchengling China  0.1
18 Jul 2021 18:15 Qianjiang China  0.1