Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
19 Jul 2021 06 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, Macao
Exposed population Few people in Category 1 or higher
Maximum wind speed 101 km/h
Maximum storm surge 1.7 m (19 Jul 19:15 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 101 km/h 1.7 m 138 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 8.3 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 06:00 UTC
CategoryCountryPopulation 
CAT. 1China253 
Tropical StormChina, Macao8,287,816
+
China8,249,108 
Macao38,708 

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 86 -
- - - - - China
GREEN 3 19 Jul 2021 06:00 140 Few people
- - - - China, 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 06:00 UTC
LevelCountryPopulation 
more than 1000 mmChina282 
750-1000 mmChina49,363 
500-750 mmChina102,068 
250-500 mmChina, Hong Kong6,272,556
+
China3,206,111 
Hong Kong3,066,445 
100-250 mmChina, Hong Kong, Macao29,393,770
+
China24,554,335 
Hong Kong4,259,781 
Macao579,652 
50-100 mmChina, Hong Kong18,493,302
+
China18,493,049 
Hong Kong253 

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 00:00 178 -
- - - - - China, Macao
Blue 3 19 Jul 2021 06:00 1024 35.8 million
China, Hong Kong, Macao




Impact estimation for the next 72h
TOP

StormSurge

1.7 m

The maximum Storm surge height is  1.7m in Luewei, China. This height is estimated for 19 Jul 2021 19:15 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 19 Jul 2021 06:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
19 Jul 2021 19:15 Luewei China  1.7
19 Jul 2021 19:15 Shalan China  1.7
19 Jul 2021 19:15 Shadi China  1.7
19 Jul 2021 19:15 Dalangwan China  1.7
19 Jul 2021 19:30 Dayang China  1.6
19 Jul 2021 19:30 Guanghai China  1.6
19 Jul 2021 19:30 Tiantou China  1.3
19 Jul 2021 19:30 Tonggu China  1.3
20 Jul 2021 20:00 Beidou China  1.1
20 Jul 2021 20:00 Chen-hai China  1.1
20 Jul 2021 20:00 Shen-ching China  1.1
19 Jul 2021 21:30 Doushan China  1.0
19 Jul 2021 21:30 Chixi China  1.0
19 Jul 2021 19:00 Mashan China  0.8
19 Jul 2021 19:00 Pingsha China  0.8
19 Jul 2021 20:00 Meige China  0.8
19 Jul 2021 20:00 Doumen China  0.8
19 Jul 2021 21:30 Huangchong China  0.7
19 Jul 2021 21:30 Mei-ko China  0.7
19 Jul 2021 21:30 Ching-an China  0.7
19 Jul 2021 21:30 Xiaolin China  0.7
19 Jul 2021 15:45 Nanping China  0.6
19 Jul 2021 15:45 Xiazha China  0.6
19 Jul 2021 15:45 Maogang China  0.6
19 Jul 2021 15:45 Macau Macau (China)  0.6
19 Jul 2021 15:45 Taipa Macau (China)  0.6
19 Jul 2021 15:45 Coloane Macau (China)  0.6
19 Jul 2021 15:45 Heung chau China  0.6
19 Jul 2021 16:00 Baijiao China  0.5
19 Jul 2021 16:00 San-tsao China  0.5
22 Jul 2021 06:00 San Shah China  0.5
22 Jul 2021 06:00 Gaoshan China  0.5
22 Jul 2021 06:00 Ta-ch'iu China  0.5
22 Jul 2021 06:00 Beicuo China  0.5
22 Jul 2021 06:00 Guanjing China  0.5
22 Jul 2021 06:00 Cao Yu China  0.5
22 Jul 2021 06:00 Qingfeng China  0.5
22 Jul 2021 06:00 Pingtan China  0.5
19 Jul 2021 18:00 Cuihengcun China  0.4
19 Jul 2021 18:00 Qishan China  0.4
19 Jul 2021 18:00 Ch'i-ao China  0.4
19 Jul 2021 13:15 Min-chung China  0.4
19 Jul 2021 13:15 Cheng'anwei China  0.4
20 Jul 2021 18:30 Hsin-chou China  0.4
19 Jul 2021 17:30 Fan Kwai Tong Hong Kong (China)  0.4
19 Jul 2021 18:00 Nantou China  0.4
20 Jul 2021 23:30 Dagou China  0.4
22 Jul 2021 04:00 Ma-hsieh China  0.4
22 Jul 2021 04:00 Badongxu China  0.4
22 Jul 2021 04:00 Potou China  0.4
22 Jul 2021 04:00 Bengtang China  0.4
22 Jul 2021 04:00 Baisha China  0.4
22 Jul 2021 04:00 Shaoyao China  0.4
22 Jul 2021 04:00 Xingyou China  0.4
22 Jul 2021 04:00 Huangpo China  0.4
22 Jul 2021 04:00 Chiu-wu-ch'uan China  0.4
22 Jul 2021 00:30 Shuidong China  0.4
22 Jul 2021 00:30 Ch'i-ching China  0.4
22 Jul 2021 00:30 Dianbai China  0.4
22 Jul 2021 00:30 Danchang China  0.4
22 Jul 2021 00:30 Magang China  0.4
19 Jul 2021 17:30 Lajiwei China  0.4
19 Jul 2021 12:45 Wan-ch'ing-sha China  0.3
19 Jul 2021 15:15 Wanshan China  0.3
21 Jul 2021 01:00 Jiangcheng China  0.3
21 Jul 2021 01:00 Baipu China  0.3
22 Jul 2021 06:00 Hai-lu China  0.3
22 Jul 2021 06:00 Meilu China  0.3
21 Jul 2021 00:30 Heping China  0.3
19 Jul 2021 17:30 Tai Long Wan Hong Kong (China)  0.3
19 Jul 2021 17:30 Shekou China  0.3
19 Jul 2021 17:30 Lau Fau Sha Hong Kong (China)  0.3
19 Jul 2021 15:15 Yuen Long Hong Kong (China)  0.3
19 Jul 2021 15:15 Tai Po Hong Kong (China)  0.3
19 Jul 2021 15:15 Tai Po Industrial Estate Hong Kong (China)  0.3
19 Jul 2021 15:15 Fung Yuen Hong Kong (China)  0.3
19 Jul 2021 15:15 Dabu Hong Kong (China)  0.3
19 Jul 2021 15:15 Sha Tau Kok China  0.3
19 Jul 2021 15:15 Cheung Kang Hong Kong (China)  0.3
19 Jul 2021 15:15 Imtin China  0.3
19 Jul 2021 15:15 Cheung Wo Hong Kong (China)  0.3
19 Jul 2021 15:15 Pak Sha Au Hong Kong (China)  0.3
19 Jul 2021 15:15 Long Ke Hong Kong (China)  0.3
19 Jul 2021 15:15 Khitschhung China  0.3
21 Jul 2021 14:15 Chengcun China  0.3
21 Jul 2021 14:15 Santouzui China  0.3
21 Jul 2021 14:15 Hsi-t'ou China  0.3
21 Jul 2021 14:15 Lengzilin China  0.3
21 Jul 2021 14:15 Pinggang China  0.3
20 Jul 2021 01:45 Huangge China  0.3
20 Jul 2021 01:45 Jiang'ouwei China  0.3
20 Jul 2021 01:45 Fumunchai China  0.3
20 Jul 2021 01:45 Fumuntschai China  0.3
20 Jul 2021 01:45 Baihao China  0.3
20 Jul 2021 01:45 Taiping China  0.3
20 Jul 2021 01:45 Sha-ching China  0.3
21 Jul 2021 15:30 Diancheng China  0.3
21 Jul 2021 15:30 Rudong China  0.3
19 Jul 2021 15:45 Cheung Sha Wan Hong Kong (China)  0.3
19 Jul 2021 15:45 Tsz Wa Chan Hong Kong (China)  0.3
19 Jul 2021 15:45 Yau Ma Po Hong Kong (China)  0.3
19 Jul 2021 15:45 Sai Kung Hong Kong (China)  0.3
19 Jul 2021 17:30 Chiu-chieh China  0.3
19 Jul 2021 17:30 Ngau Kwu Long Hong Kong (China)  0.3
19 Jul 2021 17:30 Castle Peak New Town Hong Kong (China)  0.3
19 Jul 2021 17:30 Tuen Mun Hong Kong (China)  0.3
19 Jul 2021 17:30 Ham Tin Hong Kong (China)  0.3
22 Jul 2021 06:00 Houtian China  0.2
19 Jul 2021 15:45 Dapeng China  0.2
19 Jul 2021 15:45 Taipang China  0.2
19 Jul 2021 15:45 Shagang China  0.2
19 Jul 2021 15:15 Aotou China  0.2
19 Jul 2021 14:15 Luzui China  0.2
19 Jul 2021 14:00 Hsia-yung China  0.2
19 Jul 2021 14:30 Renshan China  0.2
19 Jul 2021 14:30 Jen-shan China  0.2
19 Jul 2021 14:30 Fanhe China  0.2
19 Jul 2021 14:30 Pinghai China  0.2
19 Jul 2021 17:45 Yuen Long Hong Kong (China)  0.2
19 Jul 2021 17:45 Sz Pak Hong Kong (China)  0.2
19 Jul 2021 14:00 Jiesheng China  0.2
19 Jul 2021 14:00 Tianqian China  0.2
19 Jul 2021 14:00 Zhelang China  0.2
19 Jul 2021 15:00 Nam Wan Hong Kong (China)  0.2
19 Jul 2021 15:00 Hoi Pa Hong Kong (China)  0.2
19 Jul 2021 15:00 Lo Tik Wan Hong Kong (China)  0.2
19 Jul 2021 15:00 Tsuen Wan Hong Kong (China)  0.2
19 Jul 2021 15:00 Lo So Shing Hong Kong (China)  0.2
19 Jul 2021 15:00 Ha Kwai Chung Hong Kong (China)  0.2
19 Jul 2021 15:00 Pok Fu Lam Hong Kong (China)  0.2
19 Jul 2021 15:00 Wa Fu Estate Hong Kong (China)  0.2
19 Jul 2021 15:00 Kennedy Town Hong Kong (China)  0.2
19 Jul 2021 15:00 Aberdeen Hong Kong (China)  0.2
19 Jul 2021 15:00 Won Hang Hong Kong (China)  0.2
19 Jul 2021 15:00 Tain Sha Tsui Hong Kong (China)  0.2
19 Jul 2021 15:00 Central Hong Kong (China)  0.2
19 Jul 2021 15:00 Kowloon Hong Kong (China)  0.2
19 Jul 2021 15:00 Wan Chai Hong Kong (China)  0.2
19 Jul 2021 15:00 Chung Hom Kok Hong Kong (China)  0.2
19 Jul 2021 15:00 North Point Hong Kong (China)  0.2
19 Jul 2021 15:00 Chek Chue Hong Kong (China)  0.2
19 Jul 2021 15:00 Crocodile Hill Hong Kong (China)  0.2
19 Jul 2021 07:30 Houmen China  0.2
19 Jul 2021 23:30 Pucheng China  0.2
19 Jul 2021 23:30 Sha-fan-chieh China  0.2
19 Jul 2021 23:30 Jinxiang China  0.2
19 Jul 2021 14:45 Tei Tong Tsui Hong Kong (China)  0.2
19 Jul 2021 14:45 Tai Wan Tau Hong Kong (China)  0.2
19 Jul 2021 13:45 Tai Tam Hong Kong (China)  0.2
19 Jul 2021 13:45 Stanley Hong Kong (China)  0.2
19 Jul 2021 13:45 San Wan Ho Shau Hong Kong (China)  0.2
19 Jul 2021 13:45 Yau Tong Hong Kong (China)  0.2
19 Jul 2021 13:45 Rennie's Mill Hong Kong (China)  0.2
19 Jul 2021 13:45 A Kung Ngam Hong Kong (China)  0.2
19 Jul 2021 13:45 Chai Wan Hong Kong (China)  0.2
19 Jul 2021 13:45 Sau Mau Ping Hong Kong (China)  0.2
19 Jul 2021 13:45 Hok Tsui Wan Hong Kong (China)  0.2
19 Jul 2021 13:45 Chik Sha Hong Kong (China)  0.2
19 Jul 2021 13:45 Hang Hau Hong Kong (China)  0.2
19 Jul 2021 07:30 Magong China  0.2
22 Jul 2021 06:00 Dongjian China  0.2
22 Jul 2021 06:00 Houhai China  0.2
21 Jul 2021 15:15 Shangyang China  0.2
19 Jul 2021 14:00 Jieshi China  0.2
19 Jul 2021 07:30 Jizhongtuo China  0.2
19 Jul 2021 14:00 Gangkou China  0.2
19 Jul 2021 15:30 Taiping China  0.2
19 Jul 2021 15:30 Xianmai China  0.2
19 Jul 2021 15:30 Longshe China  0.2
19 Jul 2021 15:30 Dongli China  0.2
19 Jul 2021 15:45 Tung-li China  0.1
19 Jul 2021 15:45 Dongshan China  0.1
19 Jul 2021 07:45 Shanwei China  0.1
19 Jul 2021 13:15 Hudong China  0.1
19 Jul 2021 13:15 Jiazi China  0.1
19 Jul 2021 13:15 Changqingwei China  0.1
19 Jul 2021 20:00 Wangchuan China  0.1
19 Jul 2021 20:00 Fengting China  0.1
19 Jul 2021 20:00 Dawu China  0.1
19 Jul 2021 20:00 Fengwei China  0.1
19 Jul 2021 20:00 Hsiao-tso China  0.1
19 Jul 2021 20:00 Zhongmen China  0.1
19 Jul 2021 13:15 Guanchang China  0.1
19 Jul 2021 13:15 Jinhe China  0.1
19 Jul 2021 13:15 Wai-lo China  0.1
20 Jul 2021 07:15 T'an-chou China  0.1
20 Jul 2021 07:15 Dagang China  0.1
20 Jul 2021 07:15 Shating China  0.1
20 Jul 2021 07:15 Yuwotou China  0.1
20 Jul 2021 07:15 Lianhuashan China  0.1
20 Jul 2021 07:15 Lianshan China  0.1
20 Jul 2021 07:15 Dashatou China  0.1
20 Jul 2021 07:15 Ruishengtou China  0.1
20 Jul 2021 07:15 Chang-p'eng China  0.1
20 Jul 2021 07:15 Machong China  0.1
19 Jul 2021 14:45 Houhu 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 07:00 Tho Ngoa Vietnam  0.1
19 Jul 2021 07:00 Ly Nhon Thon Vietnam  0.1
19 Jul 2021 07:00 Dong Hoi Vietnam  0.1
19 Jul 2021 13:00 Shenquan China  0.1
19 Jul 2021 06:00 Bailong China  0.1
19 Jul 2021 06:00 Beimu China  0.1
19 Jul 2021 06:00 Yong'an China  0.1
19 Jul 2021 06:00 Shankou China  0.1
19 Jul 2021 20:30 Chiang-k'ou China  0.1
19 Jul 2021 20:30 Daitou China  0.1
19 Jul 2021 20:30 Tangbian China  0.1
19 Jul 2021 20:30 Shicheng China  0.1
19 Jul 2021 20:30 Jiangjing China  0.1
19 Jul 2021 20:30 Gangtou 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 Haimen China  0.1
22 Jul 2021 06:00 Doulongcun China  0.1
19 Jul 2021 06:00 Yingluo China  0.1
19 Jul 2021 14:30 Huangwu China  0.1
19 Jul 2021 14:30 Nayan China  0.1
19 Jul 2021 20:00 Nanri China  0.1
19 Jul 2021 20:00 Fuye China  0.1
19 Jul 2021 14:15 Ch'ao-yang-hsien China  0.1
19 Jul 2021 14:15 Dahao China  0.1
19 Jul 2021 14:15 Aotou China  0.1
19 Jul 2021 14:15 Daitou 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
19 Jul 2021 14:45 Siwei China  0.1
19 Jul 2021 14:45 Huanglong China  0.1
19 Jul 2021 14:45 Houzhai China  0.1
19 Jul 2021 14:45 Zhelin China  0.1
19 Jul 2021 19:30 P'u-hsi China  0.1
19 Jul 2021 19:30 P'u-hsi-ch'eng China  0.1
19 Jul 2021 19:30 Meizhou China  0.1
19 Jul 2021 14:15 Guangao China  0.1
19 Jul 2021 16:00 Changchun China  0.1
19 Jul 2021 16:00 Wuqu China  0.1
19 Jul 2021 16:00 Yacheng China  0.1
19 Jul 2021 16:00 Sansha China  0.1
19 Jul 2021 14:00 Shantou China  0.1
19 Jul 2021 16:15 Huang-ch'i China  0.1
19 Jul 2021 15:15 Bili China  0.1
19 Jul 2021 15:15 Chien-chiang China  0.1
19 Jul 2021 15:15 Ting-hai China  0.1
19 Jul 2021 15:15 Anhai China  0.1
19 Jul 2021 15:15 Tung-ch'ung China  0.1
19 Jul 2021 20:15 Yuxi China  0.1
19 Jul 2021 20:15 Longtian China  0.1
19 Jul 2021 20:00 Hushi China  0.1
19 Jul 2021 20:00 Pinghai China  0.1