Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
18 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 HWRF
Exposed countries China, Hong Kong, Macao
Exposed population No people in Category 1 or higher
Maximum wind speed 68 km/h
Maximum storm surge 1.3 m (21 Jul 00:15 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 68 km/h 1.3 m 150 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 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 18 Jul 2021 18:00 UTC
CategoryCountryPopulation 
Tropical StormChina, Hong Kong, Macao3,879,209
+
China3,297,037 
Hong Kong2,518 
Macao579,652 

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 18:00 104 -
- - - - - China, Hong Kong, Macao
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 18:00 UTC
LevelCountryPopulation 
more than 1000 mmChina17,070 
750-1000 mmChina116,605 
500-750 mmChina1,348,126 
250-500 mmChina, Hong Kong, Macao19,604,017
+
China17,884,385 
Hong Kong1,290,938 
Macao428,692 
100-250 mmChina, Hong Kong, Macao46,300,290
+
China40,113,788 
Hong Kong6,035,542 
Macao150,960 
50-100 mmChina11,288,841 

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 1562 67.4 million
China, Hong Kong, Macao




Impact estimation for the next 72h
TOP

StormSurge

1.3 m

The maximum Storm surge height is  1.3m in Chixi, China. This height is estimated for 21 Jul 2021 00:15 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 18 Jul 2021 18:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
21 Jul 2021 00:15 Chixi China  1.3
21 Jul 2021 00:15 Huangchong China  1.3
21 Jul 2021 00:15 Meige China  1.3
21 Jul 2021 00:15 Mashan China  1.3
21 Jul 2021 00:15 Mei-ko China  1.3
21 Jul 2021 00:15 Pingsha China  1.3
21 Jul 2021 00:15 Doumen China  1.3
21 Jul 2021 00:30 Ching-an China  1.2
21 Jul 2021 00:30 Xiaolin China  1.2
21 Jul 2021 00:30 Tiantou China  1.1
19 Jul 2021 22:45 Baijiao China  0.9
19 Jul 2021 22:45 San-tsao China  0.9
19 Jul 2021 22:45 Nanping China  0.9
19 Jul 2021 22:45 Macau Macau (China)  0.9
19 Jul 2021 22:45 Taipa Macau (China)  0.9
19 Jul 2021 22:45 Coloane Macau (China)  0.9
20 Jul 2021 06:15 Xiazha China  0.8
20 Jul 2021 06:15 Maogang China  0.8
20 Jul 2021 06:15 Heung chau China  0.8
21 Jul 2021 10:00 Min-chung China  0.8
21 Jul 2021 10:00 Wan-ch'ing-sha China  0.8
21 Jul 2021 10:00 Qishan China  0.8
21 Jul 2021 10:00 Cheng'anwei China  0.8
21 Jul 2021 11:15 Cuihengcun China  0.7
21 Jul 2021 11:15 Ch'i-ao China  0.7
21 Jul 2021 00:15 Tonggu China  0.7
21 Jul 2021 09:15 Huangge China  0.7
21 Jul 2021 09:15 Jiang'ouwei China  0.7
21 Jul 2021 09:15 Fumunchai China  0.7
21 Jul 2021 09:15 Fumuntschai China  0.7
21 Jul 2021 09:15 Baihao China  0.7
21 Jul 2021 09:15 Taiping China  0.7
21 Jul 2021 09:15 Sha-ching China  0.7
21 Jul 2021 09:15 Heping China  0.7
20 Jul 2021 07:45 Fan Kwai Tong Hong Kong (China)  0.6
20 Jul 2021 07:45 Nantou China  0.6
19 Jul 2021 16:30 Luewei China  0.6
19 Jul 2021 16:30 Shalan China  0.6
19 Jul 2021 16:30 Shadi China  0.6
19 Jul 2021 16:30 Dalangwan China  0.6
20 Jul 2021 07:15 Lajiwei China  0.5
20 Jul 2021 08:00 Chiu-chieh China  0.5
20 Jul 2021 08:00 Shekou China  0.5
20 Jul 2021 08:00 Lau Fau Sha Hong Kong (China)  0.5
20 Jul 2021 08:00 Ngau Kwu Long Hong Kong (China)  0.5
20 Jul 2021 08:00 Castle Peak New Town Hong Kong (China)  0.5
20 Jul 2021 08:00 Tuen Mun Hong Kong (China)  0.5
20 Jul 2021 07:30 Tai Long Wan Hong Kong (China)  0.5
19 Jul 2021 22:15 Wanshan China  0.5
20 Jul 2021 07:45 Ham Tin Hong Kong (China)  0.5
20 Jul 2021 00:00 Yuen Long Hong Kong (China)  0.5
20 Jul 2021 00:00 Sz Pak Hong Kong (China)  0.5
19 Jul 2021 17:30 Dayang China  0.4
19 Jul 2021 17:30 Guanghai China  0.4
19 Jul 2021 23:30 Yuen Long Hong Kong (China)  0.4
19 Jul 2021 23:30 Tai Po Hong Kong (China)  0.4
19 Jul 2021 23:30 Tai Po Industrial Estate Hong Kong (China)  0.4
19 Jul 2021 23:30 Fung Yuen Hong Kong (China)  0.4
19 Jul 2021 23:30 Dabu Hong Kong (China)  0.4
19 Jul 2021 23:30 Sha Tau Kok China  0.4
19 Jul 2021 23:30 Cheung Kang Hong Kong (China)  0.4
19 Jul 2021 23:30 Imtin China  0.4
19 Jul 2021 23:30 Cheung Wo Hong Kong (China)  0.4
19 Jul 2021 23:30 Pak Sha Au Hong Kong (China)  0.4
19 Jul 2021 23:30 Long Ke Hong Kong (China)  0.4
19 Jul 2021 23:30 Khitschhung China  0.4
21 Jul 2021 18:00 Chen-hai China  0.4
19 Jul 2021 23:15 Cheung Sha Wan Hong Kong (China)  0.4
19 Jul 2021 23:15 Tsz Wa Chan Hong Kong (China)  0.4
19 Jul 2021 23:15 Yau Ma Po Hong Kong (China)  0.4
19 Jul 2021 23:15 Sai Kung Hong Kong (China)  0.4
21 Jul 2021 18:00 Doushan China  0.4
21 Jul 2021 15:00 San Shah China  0.3
21 Jul 2021 15:00 Gaoshan China  0.3
21 Jul 2021 15:00 Ta-ch'iu China  0.3
21 Jul 2021 15:00 Beicuo China  0.3
21 Jul 2021 15:00 Guanjing China  0.3
21 Jul 2021 15:00 Cao Yu China  0.3
21 Jul 2021 15:00 Qingfeng China  0.3
21 Jul 2021 15:00 Pingtan China  0.3
19 Jul 2021 22:45 Dapeng China  0.3
19 Jul 2021 22:45 Taipang China  0.3
19 Jul 2021 22:45 Shagang China  0.3
19 Jul 2021 22:45 Aotou China  0.3
21 Jul 2021 10:15 T'an-chou China  0.3
21 Jul 2021 10:15 Dagang China  0.3
21 Jul 2021 10:15 Shating China  0.3
21 Jul 2021 10:15 Yuwotou China  0.3
21 Jul 2021 10:15 Lianhuashan China  0.3
21 Jul 2021 10:15 Lianshan China  0.3
21 Jul 2021 10:15 Dashatou China  0.3
21 Jul 2021 10:15 Ruishengtou China  0.3
21 Jul 2021 10:15 Chang-p'eng China  0.3
21 Jul 2021 10:15 Machong China  0.3
19 Jul 2021 22:45 Luzui China  0.3
19 Jul 2021 22:45 Lo Tik Wan Hong Kong (China)  0.3
19 Jul 2021 22:45 Lo So Shing Hong Kong (China)  0.3
19 Jul 2021 22:45 Pok Fu Lam Hong Kong (China)  0.3
19 Jul 2021 22:45 Wa Fu Estate Hong Kong (China)  0.3
19 Jul 2021 22:45 Kennedy Town Hong Kong (China)  0.3
19 Jul 2021 22:15 Nam Wan Hong Kong (China)  0.3
19 Jul 2021 22:15 Hoi Pa Hong Kong (China)  0.3
19 Jul 2021 22:15 Tsuen Wan Hong Kong (China)  0.3
19 Jul 2021 22:15 Ha Kwai Chung Hong Kong (China)  0.3
19 Jul 2021 22:15 Aberdeen Hong Kong (China)  0.3
19 Jul 2021 22:15 Won Hang Hong Kong (China)  0.3
19 Jul 2021 22:15 Tain Sha Tsui Hong Kong (China)  0.3
19 Jul 2021 22:15 Central Hong Kong (China)  0.3
19 Jul 2021 22:15 Kowloon Hong Kong (China)  0.3
19 Jul 2021 22:15 Wan Chai Hong Kong (China)  0.3
19 Jul 2021 22:15 Chung Hom Kok Hong Kong (China)  0.3
19 Jul 2021 22:15 North Point Hong Kong (China)  0.3
19 Jul 2021 22:15 Chek Chue Hong Kong (China)  0.3
19 Jul 2021 22:15 Crocodile Hill Hong Kong (China)  0.3
20 Jul 2021 00:00 Hsia-yung China  0.3
20 Jul 2021 00:00 Renshan China  0.2
20 Jul 2021 00:00 Jen-shan China  0.2
19 Jul 2021 23:00 Houmen China  0.2
19 Jul 2021 21:00 Fanhe China  0.2
19 Jul 2021 21:00 Pinghai China  0.2
19 Jul 2021 22:30 Tai Tam Hong Kong (China)  0.2
19 Jul 2021 22:30 Stanley Hong Kong (China)  0.2
19 Jul 2021 22:30 San Wan Ho Shau Hong Kong (China)  0.2
19 Jul 2021 22:30 Yau Tong Hong Kong (China)  0.2
19 Jul 2021 22:30 Rennie's Mill Hong Kong (China)  0.2
19 Jul 2021 22:30 A Kung Ngam Hong Kong (China)  0.2
19 Jul 2021 22:30 Chai Wan Hong Kong (China)  0.2
19 Jul 2021 22:30 Sau Mau Ping Hong Kong (China)  0.2
19 Jul 2021 22:30 Hok Tsui Wan Hong Kong (China)  0.2
19 Jul 2021 22:30 Chik Sha Hong Kong (China)  0.2
19 Jul 2021 22:30 Hang Hau Hong Kong (China)  0.2
21 Jul 2021 18:00 Beidou China  0.2
19 Jul 2021 22:30 Magong China  0.2
19 Jul 2021 22:30 Jizhongtuo China  0.2
19 Jul 2021 22:15 Tei Tong Tsui Hong Kong (China)  0.2
19 Jul 2021 22:15 Tai Wan Tau Hong Kong (China)  0.2
21 Jul 2021 14:45 Houtian China  0.2
19 Jul 2021 20:15 Jiesheng China  0.2
19 Jul 2021 20:15 Tianqian China  0.2
19 Jul 2021 20:15 Zhelang China  0.2
19 Jul 2021 22:15 Shanwei China  0.2
19 Jul 2021 22:30 Gangkou China  0.2
19 Jul 2021 01:45 Dongjian China  0.2
19 Jul 2021 01:45 Badongxu China  0.2
19 Jul 2021 01:45 Houhu China  0.2
19 Jul 2021 01:45 Bengtang China  0.2
19 Jul 2021 01:45 Houhai China  0.2
19 Jul 2021 01:45 Baisha China  0.2
19 Jul 2021 01:45 Shaoyao China  0.2
19 Jul 2021 01:45 Xingyou China  0.2
19 Jul 2021 01:45 Huangwu China  0.2
19 Jul 2021 01:45 Nayan China  0.2
19 Jul 2021 01:45 Doulongcun China  0.2
19 Jul 2021 14:00 Donghong China  0.2
19 Jul 2021 14:00 Jinghai China  0.2
19 Jul 2021 14:00 Ch'ao-yang-hsien China  0.2
19 Jul 2021 14:00 Haimen China  0.2
19 Jul 2021 14:00 Dahao China  0.2
19 Jul 2021 14:00 Aotou China  0.2
19 Jul 2021 14:00 Daitou China  0.2
21 Jul 2021 18:00 Shen-ching China  0.2
19 Jul 2021 19:45 Jieshi China  0.2
19 Jul 2021 19:45 Hudong China  0.2
19 Jul 2021 14:15 Guangao China  0.2
19 Jul 2021 02:45 Guanchang China  0.1
19 Jul 2021 02:45 Dongli China  0.1
19 Jul 2021 02:45 Tung-li China  0.1
19 Jul 2021 02:45 Jinhe China  0.1
19 Jul 2021 02:45 Wai-lo China  0.1
19 Jul 2021 14:15 Shantou China  0.1
19 Jul 2021 21:30 Jiazi China  0.1
19 Jul 2021 21:30 Changqingwei China  0.1
19 Jul 2021 00:00 Potou China  0.1
19 Jul 2021 00:00 Huangpo China  0.1
19 Jul 2021 00:00 Chiu-wu-ch'uan China  0.1
19 Jul 2021 15:00 Siwei China  0.1
19 Jul 2021 15:00 Houzhai China  0.1
19 Jul 2021 02:45 Xiuying China  0.1
19 Jul 2021 02:45 Haikou China  0.1
19 Jul 2021 02:45 Puqian China  0.1
19 Jul 2021 21:00 Shenquan China  0.1
19 Jul 2021 01:30 Ky Tan Vietnam  0.1
19 Jul 2021 01:30 Duc Pho Vietnam  0.1
19 Jul 2021 01:30 An Lac Vietnam  0.1
18 Jul 2021 23:00 Pinggang China  0.1
18 Jul 2021 23:00 Jiangcheng China  0.1
18 Jul 2021 23:00 Baipu China  0.1
18 Jul 2021 23:00 Dagou China  0.1
18 Jul 2021 23:30 Shuidong China  0.1
18 Jul 2021 23:30 Ch'i-ching China  0.1
18 Jul 2021 23:30 Dianbai China  0.1
18 Jul 2021 23:30 Danchang China  0.1
18 Jul 2021 23:30 Magang China  0.1
19 Jul 2021 05:45 Bailong China  0.1
19 Jul 2021 05:45 Beimu China  0.1
19 Jul 2021 05:45 Yong'an China  0.1
19 Jul 2021 05:45 Shankou China  0.1
19 Jul 2021 01:30 Qianshan China  0.1
19 Jul 2021 05:45 Yingluo China  0.1
19 Jul 2021 03:00 Shuiwei China  0.1
19 Jul 2021 03:00 Mai-ch'en-hsu China  0.1
19 Jul 2021 03:00 Maichen China  0.1
19 Jul 2021 00:00 Hai-lu China  0.1
18 Jul 2021 23:30 Meilu China  0.1
19 Jul 2021 14:30 Huanglong China  0.1
19 Jul 2021 14:30 Zhelin China  0.1
18 Jul 2021 23:00 Diancheng China  0.1
18 Jul 2021 23:15 Rudong China  0.1
19 Jul 2021 03:45 Xianmai China  0.1
19 Jul 2021 03:45 Longshe China  0.1
19 Jul 2021 03:45 Dongshan China  0.1
19 Jul 2021 18:30 Fugong China  0.1
19 Jul 2021 18:30 Haicang China  0.1
19 Jul 2021 18:30 Gangwei China  0.1
19 Jul 2021 18:30 Songyu China  0.1
19 Jul 2021 18:30 Hsing-lin China  0.1
19 Jul 2021 18:30 Xucuo China  0.1
19 Jul 2021 18:30 Gulangyu China  0.1
19 Jul 2021 18:30 Xiamen China  0.1
19 Jul 2021 18:30 Chen-hai China  0.1
19 Jul 2021 18:30 Daomei China  0.1
19 Jul 2021 18:30 Dianqian China  0.1
19 Jul 2021 18:30 Jiangtou China  0.1
19 Jul 2021 18:30 Zhenhai China  0.1
19 Jul 2021 18:30 Hecuo China  0.1
19 Jul 2021 18:30 Liuwudian China  0.1
18 Jul 2021 23:00 Hsin-chou China  0.1
19 Jul 2021 18:00 Guhuai China  0.1
19 Jul 2021 18:00 Chiang-t'ien China  0.1
19 Jul 2021 18:00 Chang-chiang China  0.1
18 Jul 2021 22:45 Shangyang China  0.1
18 Jul 2021 22:45 Santouzui China  0.1
18 Jul 2021 22:45 Hsi-t'ou China  0.1
18 Jul 2021 22:45 Lengzilin China  0.1
19 Jul 2021 05:15 Taiping China  0.1
19 Jul 2021 04:30 Caotan China  0.1
19 Jul 2021 03:00 Haian China  0.1
19 Jul 2021 00:30 Zhanjiang China  0.1
19 Jul 2021 00:30 Ma-hsieh China  0.1
19 Jul 2021 19:45 Wangchuan China  0.1
19 Jul 2021 19:45 Fengting China  0.1
19 Jul 2021 19:45 Dawu China  0.1
19 Jul 2021 19:45 Fengwei China  0.1
19 Jul 2021 19:45 Hsiao-tso China  0.1
19 Jul 2021 19:45 Zhongmen China  0.1