Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
20 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 ECMWF
Exposed countries China
Exposed population No people in Category 1 or higher
Maximum wind speed 76 km/h
Maximum storm surge 0.6 m (20 Jul 05:30 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 76 km/h 0.6 m 195 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 50 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 00:00 UTC
CategoryCountryPopulation 
Tropical StormChina54,350 

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
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 00:00 UTC
LevelCountryPopulation 
250-500 mmChina, Philippines1,272,076
+
China1,227,730 
Philippines44,345 
100-250 mmChina, Taiwan, Vietnam, Laos, Thailand, Philippines23,716,956
+
China18,558,146 
Taiwan15,654 
Vietnam236,981 
Laos53,593 
Philippines4,846,237 
Thailand6,342 
50-100 mmChina, Taiwan, Vietnam, Hong Kong, Macao, Laos, Philippines, Thailand, Cambodia81,824,054
+
China64,679,411 
Taiwan556,646 
Vietnam4,482,251 
Hong Kong5,257,315 
Macao579,652 
Laos658,067 
Philippines5,109,918 
Thailand498,467 
Cambodia2,323 

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 00:00 361 25 million
- - - China, Taiwan, Vietnam, Hong Kong, Macao, Laos, Philippines, Thailand, Cambodia




Impact estimation for the next 72h
TOP

StormSurge

0.6 m

The maximum Storm surge height is  0.6m in Shalan, China. This height is estimated for 20 Jul 2021 05:30 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 20 Jul 2021 00:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
20 Jul 2021 05:30 Shalan China  0.6
20 Jul 2021 05:30 Dayang China  0.6
20 Jul 2021 05:30 Dalangwan China  0.6
20 Jul 2021 05:30 Guanghai China  0.6
20 Jul 2021 12:30 Beidou China  0.5
20 Jul 2021 12:30 Chen-hai China  0.5
20 Jul 2021 12:30 Shen-ching China  0.5
20 Jul 2021 03:00 Luewei China  0.5
20 Jul 2021 03:00 Shadi China  0.5
20 Jul 2021 06:15 Doushan China  0.5
20 Jul 2021 06:15 Tiantou China  0.5
20 Jul 2021 06:15 Tonggu China  0.5
20 Jul 2021 06:15 Chixi China  0.5
20 Jul 2021 08:15 Huangchong China  0.4
20 Jul 2021 08:15 Meige China  0.4
20 Jul 2021 08:15 Mashan China  0.4
20 Jul 2021 08:15 Mei-ko China  0.4
20 Jul 2021 08:15 Pingsha China  0.4
20 Jul 2021 08:15 Doumen China  0.4
20 Jul 2021 08:00 Ching-an China  0.4
20 Jul 2021 08:00 Xiaolin China  0.4
20 Jul 2021 04:00 Baijiao China  0.3
20 Jul 2021 04:00 San-tsao China  0.3
20 Jul 2021 04:00 Nanping China  0.3
20 Jul 2021 04:00 Macau Macau (China)  0.3
20 Jul 2021 04:00 Taipa Macau (China)  0.3
20 Jul 2021 04:00 Coloane Macau (China)  0.3
20 Jul 2021 10:00 Min-chung China  0.3
20 Jul 2021 10:00 Wan-ch'ing-sha China  0.3
20 Jul 2021 10:00 Qishan China  0.3
20 Jul 2021 10:00 Cheng'anwei China  0.3
20 Jul 2021 16:30 Huangge China  0.3
20 Jul 2021 16:30 Jiang'ouwei China  0.3
20 Jul 2021 16:30 Fumunchai China  0.3
20 Jul 2021 16:30 Fumuntschai China  0.3
20 Jul 2021 16:30 Baihao China  0.3
20 Jul 2021 16:30 Taiping China  0.3
20 Jul 2021 16:30 Sha-ching China  0.3
20 Jul 2021 16:30 Heping China  0.3
20 Jul 2021 07:45 Cuihengcun China  0.3
20 Jul 2021 07:45 Xiazha China  0.3
20 Jul 2021 07:45 Ch'i-ao China  0.3
20 Jul 2021 05:15 Maogang China  0.3
20 Jul 2021 05:15 Heung chau China  0.3
20 Jul 2021 16:45 Nantou China  0.3
22 Jul 2021 01:00 Yingluo China  0.3
22 Jul 2021 01:00 Caotan China  0.3
22 Jul 2021 01:00 Longtousha China  0.3
22 Jul 2021 01:00 Yingzai China  0.3
21 Jul 2021 02:45 San Shah China  0.3
21 Jul 2021 02:45 Gaoshan China  0.3
21 Jul 2021 02:45 Ta-ch'iu China  0.3
21 Jul 2021 02:45 Beicuo China  0.3
21 Jul 2021 02:45 Guanjing China  0.3
21 Jul 2021 02:45 Cao Yu China  0.3
21 Jul 2021 02:45 Qingfeng China  0.3
21 Jul 2021 02:45 Pingtan China  0.3
20 Jul 2021 14:30 Fan Kwai Tong Hong Kong (China)  0.3
21 Jul 2021 22:30 Bailong China  0.3
21 Jul 2021 22:30 Beimu China  0.3
21 Jul 2021 22:30 Yong'an China  0.3
21 Jul 2021 22:30 Shankou China  0.3
20 Jul 2021 09:45 Hsin-chou China  0.2
20 Jul 2021 09:45 Dagou China  0.2
20 Jul 2021 05:30 Lajiwei China  0.2
20 Jul 2021 17:45 Chiu-chieh China  0.2
20 Jul 2021 17:45 Shekou China  0.2
20 Jul 2021 15:15 Jiangcheng China  0.2
20 Jul 2021 15:15 Baipu China  0.2
20 Jul 2021 14:15 Lau Fau Sha Hong Kong (China)  0.2
20 Jul 2021 14:15 Ngau Kwu Long Hong Kong (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 14:30 Tai Long Wan Hong Kong (China)  0.2
20 Jul 2021 14:30 Ham Tin Hong Kong (China)  0.2
20 Jul 2021 14:30 Yuen Long Hong Kong (China)  0.2
20 Jul 2021 14:30 Sz Pak Hong Kong (China)  0.2
20 Jul 2021 05:00 Wanshan China  0.2
20 Jul 2021 15:30 Pinggang China  0.2
20 Jul 2021 11:30 Yuen Long Hong Kong (China)  0.2
20 Jul 2021 11:30 Tai Po Hong Kong (China)  0.2
20 Jul 2021 11:30 Tai Po Industrial Estate Hong Kong (China)  0.2
20 Jul 2021 11:30 Fung Yuen Hong Kong (China)  0.2
20 Jul 2021 11:30 Dabu Hong Kong (China)  0.2
20 Jul 2021 11:30 Sha Tau Kok China  0.2
20 Jul 2021 11:30 Cheung Kang Hong Kong (China)  0.2
20 Jul 2021 11:30 Imtin China  0.2
20 Jul 2021 11:30 Cheung Wo Hong Kong (China)  0.2
20 Jul 2021 11:30 Pak Sha Au Hong Kong (China)  0.2
20 Jul 2021 11:30 Long Ke Hong Kong (China)  0.2
20 Jul 2021 11:30 Khitschhung China  0.2
22 Jul 2021 15:00 Houtian China  0.2
21 Jul 2021 21:15 Hsi-ch'ang-hsu China  0.2
21 Jul 2021 21:15 Hsi-ch'ang China  0.2
21 Jul 2021 21:15 Shagang China  0.2
21 Jul 2021 21:15 Beihai China  0.2
21 Jul 2021 21:15 Dangjiang China  0.2
21 Jul 2021 21:15 Gaode China  0.2
21 Jul 2021 21:15 Guchengling China  0.2
21 Jul 2021 21:15 Qianjiang China  0.2
20 Jul 2021 11:30 Cheung Sha Wan Hong Kong (China)  0.2
20 Jul 2021 11:30 Tsz Wa Chan Hong Kong (China)  0.2
20 Jul 2021 11:30 Yau Ma Po Hong Kong (China)  0.2
20 Jul 2021 11:30 Sai Kung Hong Kong (China)  0.2
20 Jul 2021 15:45 Santouzui China  0.2
20 Jul 2021 15:45 Hsi-t'ou China  0.2
20 Jul 2021 15:45 Lengzilin China  0.2
20 Jul 2021 04:00 Dapeng China  0.2
20 Jul 2021 04:00 Taipang China  0.2
20 Jul 2021 04:00 Shagang China  0.2
20 Jul 2021 04:00 Luzui China  0.2
20 Jul 2021 04:45 Aotou China  0.2
20 Jul 2021 04:00 Nam Wan Hong Kong (China)  0.1
20 Jul 2021 04:00 Hoi Pa Hong Kong (China)  0.1
20 Jul 2021 04:00 Lo Tik Wan Hong Kong (China)  0.1
20 Jul 2021 04:00 Tsuen Wan Hong Kong (China)  0.1
20 Jul 2021 04:00 Lo So Shing Hong Kong (China)  0.1
20 Jul 2021 04:00 Ha Kwai Chung Hong Kong (China)  0.1
20 Jul 2021 04:00 Pok Fu Lam Hong Kong (China)  0.1
20 Jul 2021 04:00 Wa Fu Estate Hong Kong (China)  0.1
20 Jul 2021 04:00 Kennedy Town Hong Kong (China)  0.1
20 Jul 2021 04:00 Aberdeen Hong Kong (China)  0.1
20 Jul 2021 04:00 Won Hang Hong Kong (China)  0.1
20 Jul 2021 04:00 Tain Sha Tsui Hong Kong (China)  0.1
20 Jul 2021 04:00 Central Hong Kong (China)  0.1
20 Jul 2021 04:00 Kowloon Hong Kong (China)  0.1
20 Jul 2021 04:00 Wan Chai Hong Kong (China)  0.1
20 Jul 2021 04:00 Chung Hom Kok Hong Kong (China)  0.1
20 Jul 2021 04:00 North Point Hong Kong (China)  0.1
20 Jul 2021 04:00 Chek Chue Hong Kong (China)  0.1
20 Jul 2021 04:00 Crocodile Hill Hong Kong (China)  0.1
21 Jul 2021 22:15 Guanjing China  0.1
20 Jul 2021 02:30 Hsia-yung China  0.1
20 Jul 2021 14:45 Renshan China  0.1
20 Jul 2021 14:45 Jen-shan China  0.1
20 Jul 2021 14:15 Fanhe China  0.1
20 Jul 2021 14:15 Pinghai China  0.1
20 Jul 2021 15:45 Shangyang China  0.1
21 Jul 2021 22:15 Hsi-niu-chiao China  0.1
21 Jul 2021 22:15 Pingshan China  0.1
20 Jul 2021 03:45 Tai Tam Hong Kong (China)  0.1
20 Jul 2021 03:45 Stanley Hong Kong (China)  0.1
20 Jul 2021 03:45 San Wan Ho Shau Hong Kong (China)  0.1
20 Jul 2021 03:45 Yau Tong Hong Kong (China)  0.1
20 Jul 2021 03:45 Rennie's Mill Hong Kong (China)  0.1
20 Jul 2021 03:45 A Kung Ngam Hong Kong (China)  0.1
20 Jul 2021 03:45 Chai Wan Hong Kong (China)  0.1
20 Jul 2021 03:45 Sau Mau Ping Hong Kong (China)  0.1
20 Jul 2021 03:45 Hok Tsui Wan Hong Kong (China)  0.1
20 Jul 2021 03:45 Chik Sha Hong Kong (China)  0.1
20 Jul 2021 03:45 Hang Hau Hong Kong (China)  0.1
20 Jul 2021 03:45 Tei Tong Tsui Hong Kong (China)  0.1
20 Jul 2021 03:45 Tai Wan Tau Hong Kong (China)  0.1
22 Jul 2021 00:45 Paipu China  0.1
22 Jul 2021 00:45 Baimajing China  0.1
22 Jul 2021 00:45 Hsin-ying China  0.1
22 Jul 2021 00:45 Eman China  0.1
22 Jul 2021 00:45 Taan China  0.1
22 Jul 2021 00:45 Hsin-chou China  0.1
20 Jul 2021 03:30 Houmen China  0.1
20 Jul 2021 06:15 Fugong China  0.1
20 Jul 2021 06:15 Haicang China  0.1
20 Jul 2021 06:15 Gangwei China  0.1
20 Jul 2021 06:15 Songyu China  0.1
20 Jul 2021 06:15 Hsing-lin China  0.1
20 Jul 2021 06:15 Xucuo China  0.1
20 Jul 2021 06:15 Gulangyu China  0.1
20 Jul 2021 06:15 Xiamen China  0.1
20 Jul 2021 06:15 Chen-hai China  0.1
20 Jul 2021 06:15 Daomei China  0.1
20 Jul 2021 06:15 Dianqian China  0.1
20 Jul 2021 06:15 Jiangtou China  0.1
20 Jul 2021 06:15 Zhenhai China  0.1
20 Jul 2021 06:15 Hecuo China  0.1
20 Jul 2021 06:15 Liuwudian China  0.1
21 Jul 2021 02:15 Mong Cai Vietnam  0.1
21 Jul 2021 02:15 Jiangpingxu China  0.1
21 Jul 2021 02:15 Jiangping China  0.1
21 Jul 2021 02:15 Wanwei China  0.1
20 Jul 2021 00:00 Ch'i-shui China  0.1
20 Jul 2021 00:00 Haikang China  0.1
20 Jul 2021 06:00 Guankou China  0.1
20 Jul 2021 00:00 Longmen China  0.1
20 Jul 2021 00:00 Dafanpo China  0.1
21 Jul 2021 02:15 Bailong China  0.1
21 Jul 2021 02:15 Jiangshan China  0.1
20 Jul 2021 08:30 Siwei China  0.1
20 Jul 2021 08:30 Huanglong China  0.1
20 Jul 2021 08:30 Houzhai China  0.1
20 Jul 2021 08:30 Zhelin China  0.1
20 Jul 2021 00:15 Gongche China  0.1
20 Jul 2021 00:15 Ch'i-sha China  0.1
20 Jul 2021 09:45 Magong China  0.1
20 Jul 2021 09:45 Jizhongtuo China  0.1
20 Jul 2021 09:45 Shanwei China  0.1
20 Jul 2021 17:30 Diancheng China  0.1
20 Jul 2021 17:30 Rudong China  0.1
20 Jul 2021 00:00 Dong Cay Vietnam  0.1
20 Jul 2021 00:00 Dang Noi Vietnam  0.1
20 Jul 2021 00:00 Dam Ha Vietnam  0.1
20 Jul 2021 13:30 Gangkou China  0.1
20 Jul 2021 00:00 Liu-sha-ying China  0.1
20 Jul 2021 08:15 Dahao China  0.1
20 Jul 2021 08:15 Aotou China  0.1
20 Jul 2021 08:15 Daitou China  0.1
20 Jul 2021 08:15 Guangao China  0.1
20 Jul 2021 00:00 Cai Kien Vietnam  0.1
20 Jul 2021 00:00 Cot Doai Vietnam  0.1
20 Jul 2021 00:00 Vinh Thuc Vietnam  0.1
21 Jul 2021 23:45 Qiaotou China  0.1
21 Jul 2021 22:00 Xiuying China  0.1
21 Jul 2021 22:00 Haikou China  0.1
21 Jul 2021 22:00 Puqian China  0.1
20 Jul 2021 03:30 Shenquan China  0.1
20 Jul 2021 06:30 Da Nang Vietnam  0.1
20 Jul 2021 06:30 Xom Da Me Vietnam  0.1
20 Jul 2021 06:30 Mui Da Nang Vietnam  0.1
20 Jul 2021 06:30 Hoi An Vietnam  0.1
21 Jul 2021 22:45 Shuiwei China  0.1
21 Jul 2021 22:45 Liusha China  0.1
21 Jul 2021 22:45 Mai-ch'en-hsu China  0.1
20 Jul 2021 13:30 Jiesheng China  0.1
20 Jul 2021 13:30 Tianqian China  0.1
20 Jul 2021 22:00 Xinxing China  0.1
20 Jul 2021 23:30 Guangcun China  0.1
20 Jul 2021 03:45 Zhelang China  0.1
22 Jul 2021 23:00 Feng-chiang Taiwan  0.1
22 Jul 2021 23:00 She-liao Taiwan  0.1
22 Jul 2021 23:00 Che-cheng Taiwan  0.1
22 Jul 2021 23:00 Maobitou Taiwan  0.1
22 Jul 2021 23:00 Ta-kuang Taiwan  0.1
20 Jul 2021 00:00 Baishawan China  0.1
22 Jul 2021 00:15 Fangcheng China  0.1
22 Jul 2021 23:30 Fang-shan Taiwan  0.1
22 Jul 2021 23:00 Chia-ho-ts'un Taiwan  0.1