Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
20 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 Taiwan, China
Exposed population No people in Category 1 or higher
Maximum wind speed 65 km/h
Maximum storm surge 0.6 m (20 Jul 13:45 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
ECMWF Current 65 km/h 0.6 m 157 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)

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Wind

72 km/h

Up to 10 thousand can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 20 Jul 2021 12:00 UTC
CategoryCountryPopulation 
Tropical StormTaiwan, China11,545
+
Taiwan78 
China11,467 

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 50 - - - - - - -
GREEN 3 19 Jul 2021 00:00 50 - - - - - - -
GREEN 4 19 Jul 2021 12:00 50 - - - - - - -
GREEN 5 20 Jul 2021 00:00 76 -
- - - - - China
GREEN 6 20 Jul 2021 12:00 72 -
- - - - - Taiwan, 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 12:00 UTC
LevelCountryPopulation 
250-500 mmChina, Philippines362,536
+
China59,089 
Philippines303,447 
100-250 mmChina, Vietnam, Philippines, Laos, Thailand19,018,182
+
China13,784,397 
Vietnam378,622 
Laos98,781 
Philippines4,752,083 
Thailand4,297 
50-100 mmChina, Taiwan, Vietnam, Macao, Laos, Philippines, Thailand, Cambodia59,203,198
+
China44,427,194 
Taiwan94,359 
Vietnam8,327,251 
Macao565,906 
Laos549,601 
Philippines4,394,726 
Thailand816,094 
Cambodia28,065 

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 12:00 142 60 thousand
- - - - China, Vietnam, Laos
Blue 3 19 Jul 2021 00:00 157 -
- - - - - China, Vietnam, Philippines, Laos
Blue 4 19 Jul 2021 12:00 130 5 thousand
- - - - China, Laos, Vietnam
Blue 5 20 Jul 2021 00:00 195 10 thousand
- - - - China, Taiwan
Blue 6 20 Jul 2021 12:00 435 19.4 million
- - - China, Taiwan, Vietnam, Macao, Laos, Philippines, Thailand, Cambodia




Impact estimation for the next 72h
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StormSurge

0.6 m

The maximum Storm surge height is  0.6m in Beidou, China. This height is estimated for 20 Jul 2021 13:45 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 12:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
20 Jul 2021 13:45 Beidou China  0.6
20 Jul 2021 13:45 Chen-hai China  0.6
20 Jul 2021 13:45 Shen-ching China  0.6
20 Jul 2021 12:45 Luewei China  0.4
20 Jul 2021 12:45 Shalan China  0.4
20 Jul 2021 12:00 Dayang China  0.3
20 Jul 2021 12:00 Dalangwan China  0.3
20 Jul 2021 12:00 Guanghai China  0.3
20 Jul 2021 12:15 Shadi China  0.3
20 Jul 2021 12:00 Doushan China  0.3
20 Jul 2021 12:00 Tiantou China  0.3
20 Jul 2021 12:00 Tonggu China  0.3
20 Jul 2021 12:00 Chixi China  0.3
20 Jul 2021 12:00 Huangchong China  0.3
20 Jul 2021 12:00 Meige China  0.3
20 Jul 2021 12:00 Mashan China  0.3
20 Jul 2021 12:00 Mei-ko China  0.3
20 Jul 2021 12:00 Pingsha China  0.3
20 Jul 2021 12:00 Doumen China  0.3
20 Jul 2021 12:00 Ching-an China  0.3
20 Jul 2021 12:00 Xiaolin China  0.3
22 Jul 2021 14:30 San Shah China  0.3
22 Jul 2021 14:30 Gaoshan China  0.3
22 Jul 2021 14:30 Ta-ch'iu China  0.3
22 Jul 2021 14:30 Beicuo China  0.3
22 Jul 2021 14:30 Guanjing China  0.3
22 Jul 2021 14:30 Cao Yu China  0.3
22 Jul 2021 14:30 Qingfeng China  0.3
22 Jul 2021 14:30 Pingtan China  0.3
21 Jul 2021 06:15 Huangge China  0.3
21 Jul 2021 06:15 Min-chung China  0.3
21 Jul 2021 06:15 Wan-ch'ing-sha China  0.3
21 Jul 2021 06:15 Jiang'ouwei China  0.3
21 Jul 2021 06:15 Cheng'anwei China  0.3
21 Jul 2021 06:15 Fumunchai China  0.3
21 Jul 2021 06:15 Fumuntschai China  0.3
21 Jul 2021 06:15 Baihao China  0.3
21 Jul 2021 06:15 Taiping China  0.3
21 Jul 2021 06:15 Sha-ching China  0.3
21 Jul 2021 06:15 Heping China  0.3
20 Jul 2021 12:15 Cuihengcun China  0.3
20 Jul 2021 12:15 Qishan China  0.3
20 Jul 2021 12:15 Ch'i-ao China  0.3
20 Jul 2021 13:30 Xiazha China  0.3
20 Jul 2021 16:45 Jiangcheng China  0.3
20 Jul 2021 16:45 Baipu China  0.3
20 Jul 2021 16:45 Dagou China  0.3
20 Jul 2021 16:45 Hsin-chou China  0.3
21 Jul 2021 07:15 Nantou China  0.2
20 Jul 2021 12:15 Baijiao China  0.2
20 Jul 2021 12:15 San-tsao China  0.2
20 Jul 2021 12:15 Nanping China  0.2
20 Jul 2021 12:15 Macau Macau (China)  0.2
20 Jul 2021 12:15 Taipa Macau (China)  0.2
20 Jul 2021 12:15 Coloane Macau (China)  0.2
20 Jul 2021 14:15 Chiu-chieh China  0.2
20 Jul 2021 14:15 Shekou China  0.2
20 Jul 2021 14:15 Castle Peak New Town Hong Kong (China)  0.2
20 Jul 2021 14:15 Tuen Mun Hong Kong (China)  0.2
20 Jul 2021 13:45 Heung chau China  0.2
20 Jul 2021 13:45 Fan Kwai Tong Hong Kong (China)  0.2
20 Jul 2021 14:15 Maogang China  0.2
20 Jul 2021 14:15 Pinggang China  0.2
20 Jul 2021 13:45 Tai Long Wan Hong Kong (China)  0.2
20 Jul 2021 13:45 Lau Fau Sha Hong Kong (China)  0.2
20 Jul 2021 13:45 Ngau Kwu Long Hong Kong (China)  0.2
20 Jul 2021 13:30 Ham Tin Hong Kong (China)  0.2
20 Jul 2021 13:30 Yuen Long Hong Kong (China)  0.2
20 Jul 2021 13:30 Sz Pak Hong Kong (China)  0.2
22 Jul 2021 15:15 Houtian China  0.2
20 Jul 2021 13:15 Lajiwei China  0.2
21 Jul 2021 22:00 Caotan China  0.2
22 Jul 2021 11:00 Bailong China  0.2
22 Jul 2021 11:00 Beimu China  0.2
22 Jul 2021 11:00 Yong'an China  0.2
22 Jul 2021 11:00 Shankou China  0.2
22 Jul 2021 11:00 Yingluo China  0.2
22 Jul 2021 00:00 Longtousha China  0.2
22 Jul 2021 00:00 Yingzai China  0.2
20 Jul 2021 12:00 Yuen Long Hong Kong (China)  0.2
20 Jul 2021 12:00 Tai Po Hong Kong (China)  0.2
20 Jul 2021 12:00 Tai Po Industrial Estate Hong Kong (China)  0.2
20 Jul 2021 12:00 Fung Yuen Hong Kong (China)  0.2
20 Jul 2021 12:00 Dabu Hong Kong (China)  0.2
20 Jul 2021 12:00 Sha Tau Kok China  0.2
20 Jul 2021 12:00 Cheung Kang Hong Kong (China)  0.2
20 Jul 2021 12:00 Imtin China  0.2
20 Jul 2021 12:00 Cheung Wo Hong Kong (China)  0.2
20 Jul 2021 12:00 Pak Sha Au Hong Kong (China)  0.2
20 Jul 2021 12:00 Long Ke Hong Kong (China)  0.2
20 Jul 2021 12:00 Khitschhung China  0.2
20 Jul 2021 13:00 Wanshan China  0.2
21 Jul 2021 04:00 Paipu China  0.2
21 Jul 2021 04:00 Baimajing China  0.2
21 Jul 2021 04:00 Hsin-ying China  0.2
21 Jul 2021 04:00 Eman China  0.2
21 Jul 2021 04:00 Taan China  0.2
21 Jul 2021 04:00 Hsin-chou China  0.2
20 Jul 2021 12:00 Cheung Sha Wan Hong Kong (China)  0.2
20 Jul 2021 12:00 Tsz Wa Chan Hong Kong (China)  0.2
20 Jul 2021 12:00 Yau Ma Po Hong Kong (China)  0.2
20 Jul 2021 12:00 Sai Kung Hong Kong (China)  0.2
20 Jul 2021 14:30 Hsia-yung China  0.2
20 Jul 2021 14:30 Renshan China  0.2
20 Jul 2021 14:30 Jen-shan China  0.2
20 Jul 2021 14:30 Fanhe China  0.2
20 Jul 2021 14:30 Pinghai China  0.2
20 Jul 2021 14:45 Dapeng China  0.1
20 Jul 2021 14:45 Taipang China  0.1
20 Jul 2021 14:45 Aotou China  0.1
20 Jul 2021 12:00 Shagang China  0.1
20 Jul 2021 15:00 Luzui China  0.1
20 Jul 2021 16:00 Lengzilin China  0.1
20 Jul 2021 16:00 Santouzui China  0.1
20 Jul 2021 16:00 Hsi-t'ou China  0.1
21 Jul 2021 02:45 Mong Cai Vietnam  0.1
21 Jul 2021 02:45 Jiangpingxu China  0.1
21 Jul 2021 02:45 Jiangping China  0.1
21 Jul 2021 02:45 Wanwei China  0.1
20 Jul 2021 14:15 Houmen China  0.1
20 Jul 2021 14:15 Magong China  0.1
20 Jul 2021 14:15 Jizhongtuo China  0.1
20 Jul 2021 14:15 Shanwei China  0.1
21 Jul 2021 22:15 Hsi-ch'ang-hsu China  0.1
21 Jul 2021 22:15 Hsi-ch'ang China  0.1
21 Jul 2021 22:15 Shagang China  0.1
21 Jul 2021 22:15 Beihai China  0.1
21 Jul 2021 22:15 Dangjiang China  0.1
21 Jul 2021 22:15 Gaode China  0.1
21 Jul 2021 22:15 Guchengling China  0.1
21 Jul 2021 22:15 Qianjiang China  0.1
20 Jul 2021 13:30 Gangkou China  0.1
21 Jul 2021 02:45 Bailong China  0.1
21 Jul 2021 02:45 Jiangshan China  0.1
21 Jul 2021 10:15 Dahao China  0.1
21 Jul 2021 10:15 Aotou China  0.1
21 Jul 2021 10:15 Daitou China  0.1
21 Jul 2021 10:15 Guangao China  0.1
21 Jul 2021 10:15 Siwei China  0.1
21 Jul 2021 10:15 Houzhai China  0.1
20 Jul 2021 12:00 Nam Wan Hong Kong (China)  0.1
20 Jul 2021 12:00 Hoi Pa Hong Kong (China)  0.1
20 Jul 2021 12:00 Lo Tik Wan Hong Kong (China)  0.1
20 Jul 2021 12:00 Tsuen Wan Hong Kong (China)  0.1
20 Jul 2021 12:00 Lo So Shing Hong Kong (China)  0.1
20 Jul 2021 12:00 Ha Kwai Chung Hong Kong (China)  0.1
20 Jul 2021 12:00 Pok Fu Lam Hong Kong (China)  0.1
20 Jul 2021 12:00 Wa Fu Estate Hong Kong (China)  0.1
20 Jul 2021 12:00 Kennedy Town Hong Kong (China)  0.1
20 Jul 2021 12:00 Aberdeen Hong Kong (China)  0.1
20 Jul 2021 12:00 Won Hang Hong Kong (China)  0.1
20 Jul 2021 12:00 Tain Sha Tsui Hong Kong (China)  0.1
20 Jul 2021 12:00 Central Hong Kong (China)  0.1
20 Jul 2021 12:00 Kowloon Hong Kong (China)  0.1
20 Jul 2021 12:00 Wan Chai Hong Kong (China)  0.1
20 Jul 2021 12:00 Chung Hom Kok Hong Kong (China)  0.1
20 Jul 2021 12:00 North Point Hong Kong (China)  0.1
20 Jul 2021 12:00 Chek Chue Hong Kong (China)  0.1
20 Jul 2021 12:00 Crocodile Hill Hong Kong (China)  0.1
21 Jul 2021 04:00 Guangcun China  0.1
21 Jul 2021 04:00 Xinxing China  0.1
20 Jul 2021 15:15 Tai Tam Hong Kong (China)  0.1
20 Jul 2021 15:15 Stanley Hong Kong (China)  0.1
20 Jul 2021 15:15 San Wan Ho Shau Hong Kong (China)  0.1
20 Jul 2021 15:15 Yau Tong Hong Kong (China)  0.1
20 Jul 2021 15:15 Rennie's Mill Hong Kong (China)  0.1
20 Jul 2021 15:15 A Kung Ngam Hong Kong (China)  0.1
20 Jul 2021 15:15 Chai Wan Hong Kong (China)  0.1
20 Jul 2021 15:15 Sau Mau Ping Hong Kong (China)  0.1
20 Jul 2021 15:15 Hok Tsui Wan Hong Kong (China)  0.1
20 Jul 2021 15:15 Chik Sha Hong Kong (China)  0.1
20 Jul 2021 15:15 Hang Hau Hong Kong (China)  0.1
20 Jul 2021 15:15 Tei Tong Tsui Hong Kong (China)  0.1
20 Jul 2021 15:15 Tai Wan Tau Hong Kong (China)  0.1
21 Jul 2021 05:15 Qiaotou China  0.1
20 Jul 2021 22:45 Ch'i-shui China  0.1
20 Jul 2021 22:45 Haikang China  0.1
21 Jul 2021 02:45 Gia Luan Vietnam  0.1
21 Jul 2021 02:45 Dong Vang Vietnam  0.1
21 Jul 2021 02:45 Hon Gay Vietnam  0.1
21 Jul 2021 02:45 Lang Bang Vietnam  0.1
21 Jul 2021 02:45 Ha Tou Vietnam  0.1
20 Jul 2021 22:45 Liu-sha-ying China  0.1
21 Jul 2021 04:00 Hai Phong Vietnam  0.1
21 Jul 2021 04:00 Thuy U Vietnam  0.1
21 Jul 2021 04:00 Dai Loc Vietnam  0.1
21 Jul 2021 04:00 Quang Yen Vietnam  0.1
21 Jul 2021 04:00 Hoang Chau Vietnam  0.1
21 Jul 2021 10:15 Huanglong China  0.1
21 Jul 2021 10:15 Zhelin China  0.1
21 Jul 2021 21:15 Shuiwei China  0.1
21 Jul 2021 21:15 Liusha China  0.1
21 Jul 2021 21:15 Mai-ch'en-hsu China  0.1
21 Jul 2021 02:45 Baishawan China  0.1
21 Jul 2021 02:45 Fangcheng China  0.1
21 Jul 2021 02:45 Gongche China  0.1
21 Jul 2021 02:45 Ch'i-sha China  0.1
22 Jul 2021 08:45 Guanjing China  0.1
20 Jul 2021 13:30 Jiesheng China  0.1
20 Jul 2021 13:30 Tianqian China  0.1
21 Jul 2021 04:15 Ubon Bi Vietnam  0.1
20 Jul 2021 22:30 Basuo China  0.1
20 Jul 2021 22:30 Beili China  0.1
20 Jul 2021 22:30 Duntou China  0.1
20 Jul 2021 22:30 Changhua China  0.1
21 Jul 2021 21:45 Maichen China  0.1
21 Jul 2021 03:45 Cam Pha Vietnam  0.1
21 Jul 2021 03:45 Mong Duong Vietnam  0.1
21 Jul 2021 21:45 Xiuying China  0.1
20 Jul 2021 13:30 Zhelang China  0.1
20 Jul 2021 23:15 Nanluo China  0.1
20 Jul 2021 23:15 Haitou China  0.1
21 Jul 2021 21:30 Haikou China  0.1
20 Jul 2021 23:45 Haiwei China  0.1
22 Jul 2021 09:00 Longmen China  0.1
22 Jul 2021 09:00 Dafanpo China  0.1
22 Jul 2021 09:00 Hsi-niu-chiao China  0.1
22 Jul 2021 09:00 Pingshan China  0.1
21 Jul 2021 21:45 Haian China  0.1
20 Jul 2021 22:00 Gancheng China  0.1
20 Jul 2021 22:00 Longyou China  0.1
21 Jul 2021 09:45 Raoping China  0.1
21 Jul 2021 09:45 Shenao China  0.1
21 Jul 2021 09:45 Nanao China  0.1
21 Jul 2021 09:45 Chelim China  0.1
21 Jul 2021 09:45 Gongkou China  0.1
21 Jul 2021 09:45 Dongshan China  0.1
22 Jul 2021 16:45 Chia-ho-ts'un Taiwan  0.1
22 Jul 2021 16:45 Fang-shan Taiwan  0.1
22 Jul 2021 16:45 Feng-chiang Taiwan  0.1
22 Jul 2021 16:45 She-liao Taiwan  0.1
22 Jul 2021 16:45 Che-cheng Taiwan  0.1
22 Jul 2021 16:15 Maobitou Taiwan  0.1
22 Jul 2021 16:15 Ta-kuang Taiwan  0.1
21 Jul 2021 18:15 Donghong China  0.1
21 Jul 2021 18:15 Jinghai China  0.1
21 Jul 2021 18:15 Haimen China  0.1
21 Jul 2021 18:15 Ch'ao-yang-hsien China  0.1
20 Jul 2021 22:15 Banqiao China  0.1
21 Jul 2021 03:15 Cai Kien Vietnam  0.1
21 Jul 2021 03:15 Cot Doai Vietnam  0.1
21 Jul 2021 03:15 Vinh Thuc Vietnam  0.1
21 Jul 2021 01:30 Lingtou China  0.1
20 Jul 2021 16:00 Shangyang China  0.1