Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
19 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, Hong Kong, Macao
Exposed population No people in Category 1 or higher
Maximum wind speed 86 km/h
Maximum storm surge 1.5 m (19 Jul 20:45 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
HWRF Current 86 km/h 1.5 m 178 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 2.7 million can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 19 Jul 2021 00:00 UTC
CategoryCountryPopulation 
Tropical StormChina, Hong Kong, Macao2,650,127
+
China1,175,382 
Hong Kong895,092 
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 68 - - - - - - -
GREEN 2 19 Jul 2021 00:00 126 -
- - - - - 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 19 Jul 2021 00:00 UTC
LevelCountryPopulation 
more than 1000 mmChina18,432 
750-1000 mmChina112,028 
500-750 mmChina, Macao935,388
+
China934,781 
Macao607 
250-500 mmChina, Hong Kong, Macao6,929,541
+
China2,059,177 
Hong Kong4,291,318 
Macao579,044 
100-250 mmChina, Hong Kong22,668,972
+
China19,633,809 
Hong Kong3,035,162 
50-100 mmChina16,507,809 

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 1340 30.7 million
China, Hong Kong, Macao




Impact estimation for the next 72h
TOP

StormSurge

1.5 m

The maximum Storm surge height is  1.5m in Luewei, China. This height is estimated for 19 Jul 2021 20:45 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 19 Jul 2021 00:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
19 Jul 2021 20:45 Luewei China  1.5
19 Jul 2021 20:45 Shalan China  1.5
19 Jul 2021 20:45 Shadi China  1.5
19 Jul 2021 20:45 Dalangwan China  1.5
19 Jul 2021 21:15 Dayang China  1.3
19 Jul 2021 21:15 Guanghai China  1.3
19 Jul 2021 21:00 Tiantou China  1.1
19 Jul 2021 21:00 Tonggu China  1.1
20 Jul 2021 23:30 Baijiao China  0.9
20 Jul 2021 23:30 San-tsao China  0.9
20 Jul 2021 23:30 Nanping China  0.9
20 Jul 2021 23:30 Macau Macau (China)  0.9
20 Jul 2021 23:30 Taipa Macau (China)  0.9
20 Jul 2021 23:30 Coloane Macau (China)  0.9
20 Jul 2021 18:30 Xiazha China  0.8
20 Jul 2021 18:30 Maogang China  0.8
20 Jul 2021 18:30 Heung chau China  0.8
19 Jul 2021 23:00 Doushan China  0.7
19 Jul 2021 23:00 Chixi China  0.7
21 Jul 2021 04:45 Mashan China  0.7
21 Jul 2021 04:45 Pingsha China  0.7
21 Jul 2021 00:00 Xiaolin China  0.7
19 Jul 2021 20:30 Meige China  0.7
19 Jul 2021 20:30 Doumen China  0.7
21 Jul 2021 01:30 Cuihengcun China  0.6
21 Jul 2021 01:30 Min-chung China  0.6
21 Jul 2021 01:30 Qishan China  0.6
21 Jul 2021 01:30 Cheng'anwei China  0.6
21 Jul 2021 01:30 Ch'i-ao China  0.6
21 Jul 2021 00:45 Wan-ch'ing-sha China  0.6
20 Jul 2021 01:00 Huangchong China  0.6
20 Jul 2021 01:00 Mei-ko China  0.6
20 Jul 2021 00:45 Ching-an China  0.5
21 Jul 2021 00:45 Heping China  0.5
20 Jul 2021 20:30 Fan Kwai Tong Hong Kong (China)  0.5
20 Jul 2021 20:30 Nantou China  0.5
20 Jul 2021 22:30 Wanshan China  0.5
20 Jul 2021 19:15 Lajiwei China  0.5
20 Jul 2021 20:30 Tai Long Wan Hong Kong (China)  0.4
20 Jul 2021 20:30 Shekou China  0.4
20 Jul 2021 20:30 Lau Fau Sha Hong Kong (China)  0.4
20 Jul 2021 20:45 Chiu-chieh China  0.4
20 Jul 2021 20:45 Ngau Kwu Long Hong Kong (China)  0.4
20 Jul 2021 20:45 Castle Peak New Town Hong Kong (China)  0.4
20 Jul 2021 20:45 Tuen Mun Hong Kong (China)  0.4
21 Jul 2021 14:15 San Shah China  0.4
21 Jul 2021 14:15 Gaoshan China  0.4
21 Jul 2021 14:15 Ta-ch'iu China  0.4
21 Jul 2021 14:15 Beicuo China  0.4
21 Jul 2021 14:15 Guanjing China  0.4
21 Jul 2021 14:15 Cao Yu China  0.4
21 Jul 2021 14:15 Qingfeng China  0.4
21 Jul 2021 14:15 Pingtan China  0.4
20 Jul 2021 20:30 Ham Tin Hong Kong (China)  0.4
20 Jul 2021 20:45 Yuen Long Hong Kong (China)  0.3
20 Jul 2021 20:45 Sz Pak Hong Kong (China)  0.3
21 Jul 2021 04:45 Huangge China  0.3
21 Jul 2021 04:45 Jiang'ouwei China  0.3
21 Jul 2021 04:45 Fumunchai China  0.3
21 Jul 2021 04:45 Fumuntschai China  0.3
21 Jul 2021 04:45 Baihao China  0.3
21 Jul 2021 04:45 Taiping China  0.3
21 Jul 2021 04:45 Sha-ching China  0.3
19 Jul 2021 08:00 Yuen Long Hong Kong (China)  0.3
19 Jul 2021 08:00 Tai Po Hong Kong (China)  0.3
19 Jul 2021 08:00 Tai Po Industrial Estate Hong Kong (China)  0.3
19 Jul 2021 08:00 Fung Yuen Hong Kong (China)  0.3
19 Jul 2021 08:00 Dabu Hong Kong (China)  0.3
19 Jul 2021 08:00 Sha Tau Kok China  0.3
19 Jul 2021 08:00 Cheung Kang Hong Kong (China)  0.3
19 Jul 2021 08:00 Imtin China  0.3
19 Jul 2021 08:00 Cheung Wo Hong Kong (China)  0.3
19 Jul 2021 08:00 Pak Sha Au Hong Kong (China)  0.3
19 Jul 2021 08:00 Long Ke Hong Kong (China)  0.3
19 Jul 2021 08:00 Khitschhung China  0.3
19 Jul 2021 08:15 Cheung Sha Wan Hong Kong (China)  0.3
19 Jul 2021 08:15 Tsz Wa Chan Hong Kong (China)  0.3
19 Jul 2021 08:15 Yau Ma Po Hong Kong (China)  0.3
19 Jul 2021 08:15 Sai Kung Hong Kong (China)  0.3
21 Jul 2021 14:30 Houtian China  0.3
19 Jul 2021 14:30 Dapeng China  0.2
19 Jul 2021 14:30 Taipang China  0.2
19 Jul 2021 14:30 Shagang China  0.2
19 Jul 2021 14:30 Aotou China  0.2
19 Jul 2021 14:30 Luzui China  0.2
20 Jul 2021 17:30 Nam Wan Hong Kong (China)  0.2
20 Jul 2021 17:30 Hoi Pa Hong Kong (China)  0.2
20 Jul 2021 17:30 Lo Tik Wan Hong Kong (China)  0.2
20 Jul 2021 17:30 Tsuen Wan Hong Kong (China)  0.2
20 Jul 2021 17:30 Lo So Shing Hong Kong (China)  0.2
20 Jul 2021 17:30 Ha Kwai Chung Hong Kong (China)  0.2
20 Jul 2021 17:30 Pok Fu Lam Hong Kong (China)  0.2
20 Jul 2021 17:30 Wa Fu Estate Hong Kong (China)  0.2
20 Jul 2021 17:30 Kennedy Town Hong Kong (China)  0.2
20 Jul 2021 17:30 Aberdeen Hong Kong (China)  0.2
20 Jul 2021 17:30 Won Hang Hong Kong (China)  0.2
20 Jul 2021 17:30 Tain Sha Tsui Hong Kong (China)  0.2
20 Jul 2021 17:30 Central Hong Kong (China)  0.2
20 Jul 2021 17:30 Kowloon Hong Kong (China)  0.2
20 Jul 2021 17:30 Wan Chai Hong Kong (China)  0.2
20 Jul 2021 17:30 Chung Hom Kok Hong Kong (China)  0.2
20 Jul 2021 17:30 North Point Hong Kong (China)  0.2
20 Jul 2021 17:30 Chek Chue Hong Kong (China)  0.2
20 Jul 2021 17:30 Crocodile Hill Hong Kong (China)  0.2
19 Jul 2021 15:00 Hsia-yung China  0.2
19 Jul 2021 15:00 Renshan China  0.2
19 Jul 2021 15:00 Jen-shan China  0.2
19 Jul 2021 14:45 Fanhe China  0.2
19 Jul 2021 14:45 Pinghai China  0.2
19 Jul 2021 22:00 Houmen China  0.2
20 Jul 2021 21:00 Tai Tam Hong Kong (China)  0.2
20 Jul 2021 21:00 Stanley Hong Kong (China)  0.2
20 Jul 2021 21:00 San Wan Ho Shau Hong Kong (China)  0.2
20 Jul 2021 21:00 Yau Tong Hong Kong (China)  0.2
20 Jul 2021 21:00 Rennie's Mill Hong Kong (China)  0.2
20 Jul 2021 21:00 A Kung Ngam Hong Kong (China)  0.2
20 Jul 2021 21:00 Chai Wan Hong Kong (China)  0.2
20 Jul 2021 21:00 Sau Mau Ping Hong Kong (China)  0.2
20 Jul 2021 21:00 Hok Tsui Wan Hong Kong (China)  0.2
20 Jul 2021 21:00 Chik Sha Hong Kong (China)  0.2
20 Jul 2021 21:00 Hang Hau Hong Kong (China)  0.2
20 Jul 2021 21:00 Tei Tong Tsui Hong Kong (China)  0.2
20 Jul 2021 21:00 Tai Wan Tau Hong Kong (China)  0.2
19 Jul 2021 19:15 Jiesheng China  0.2
19 Jul 2021 19:15 Tianqian China  0.2
19 Jul 2021 19:15 Zhelang 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 21:30 Magong China  0.2
19 Jul 2021 22:30 Jizhongtuo China  0.2
19 Jul 2021 21:00 Gangkou China  0.2
19 Jul 2021 20:45 Shanwei China  0.2
20 Jul 2021 22:45 T'an-chou China  0.2
20 Jul 2021 22:45 Dagang China  0.2
20 Jul 2021 22:45 Shating China  0.2
20 Jul 2021 22:45 Yuwotou China  0.2
20 Jul 2021 22:45 Lianhuashan China  0.2
20 Jul 2021 22:45 Lianshan China  0.2
20 Jul 2021 22:45 Dashatou China  0.2
20 Jul 2021 22:45 Ruishengtou China  0.2
20 Jul 2021 22:45 Chang-p'eng China  0.2
20 Jul 2021 22:45 Machong China  0.2
19 Jul 2021 19:00 Jieshi 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 19:30 Hudong 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 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 15:00 Taiping China  0.1
19 Jul 2021 15:00 Xianmai China  0.1
19 Jul 2021 15:00 Longshe China  0.1
19 Jul 2021 18:00 Jiazi China  0.1
19 Jul 2021 18:00 Changqingwei China  0.1
19 Jul 2021 09:15 Ky Tan Vietnam  0.1
19 Jul 2021 09:15 Duc Pho Vietnam  0.1
19 Jul 2021 09:15 An Lac Vietnam  0.1
19 Jul 2021 14:30 Dongshan China  0.1
19 Jul 2021 15:45 Shenquan China  0.1
19 Jul 2021 01:30 Qianshan 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 14:00 Donghong China  0.1
19 Jul 2021 14:00 Jinghai China  0.1
19 Jul 2021 14:00 Ch'ao-yang-hsien China  0.1
19 Jul 2021 14:00 Haimen China  0.1
19 Jul 2021 14:00 Dahao China  0.1
19 Jul 2021 14:00 Aotou China  0.1
19 Jul 2021 14:00 Daitou 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
20 Jul 2021 17:00 Fugong China  0.1
20 Jul 2021 17:00 Haicang China  0.1
20 Jul 2021 17:00 Gangwei China  0.1
20 Jul 2021 17:00 Songyu China  0.1
20 Jul 2021 17:00 Hsing-lin China  0.1
20 Jul 2021 17:00 Xucuo China  0.1
20 Jul 2021 17:00 Gulangyu China  0.1
20 Jul 2021 17:00 Xiamen China  0.1
20 Jul 2021 17:00 Chen-hai China  0.1
20 Jul 2021 17:00 Daomei China  0.1
20 Jul 2021 17:00 Dianqian China  0.1
20 Jul 2021 17:00 Jiangtou China  0.1
20 Jul 2021 17:00 Zhenhai China  0.1
20 Jul 2021 17:00 Hecuo China  0.1
20 Jul 2021 17:00 Liuwudian China  0.1
19 Jul 2021 15:00 Guangao China  0.1
19 Jul 2021 15:00 Siwei China  0.1
19 Jul 2021 15:00 Houzhai China  0.1
19 Jul 2021 23:00 Pucheng China  0.1
19 Jul 2021 23:00 Sha-fan-chieh China  0.1
19 Jul 2021 23:00 Jinxiang China  0.1
20 Jul 2021 17:15 Guankou China  0.1
19 Jul 2021 00:15 Shuidong China  0.1
19 Jul 2021 00:15 Ch'i-ching China  0.1
19 Jul 2021 00:15 Dianbai China  0.1
19 Jul 2021 00:15 Danchang 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
19 Jul 2021 04:30 Caotan China  0.1
19 Jul 2021 03:00 Haian China  0.1
19 Jul 2021 14:00 Shantou China  0.1
19 Jul 2021 06:45 Tho Ngoa Vietnam  0.1
19 Jul 2021 06:45 Ly Nhon Thon Vietnam  0.1
19 Jul 2021 06:45 Dong Hoi Vietnam  0.1
19 Jul 2021 00:30 Zhanjiang China  0.1
19 Jul 2021 00:30 Ma-hsieh China  0.1
19 Jul 2021 03:15 Qiaotou China  0.1