Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
19 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 HWRF
Exposed countries China
Exposed population 1 thousand in Category 1 or higher
Maximum wind speed 119 km/h
Maximum storm surge 1.2 m (20 Jul 15:45 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 119 km/h 1.2 m 274 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)

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Wind

137 km/h

Up to 1 thousand in Category 1 strength or higher (see SSHS)



Wind exposed population - AoIs

Estimations based on the bulletin of 19 Jul 2021 12:00 UTC
CategoryCountryPopulation 
CAT. 1China1,266 
Tropical StormChina8,994,230 

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 06:00 101 -
- - - - - China
GREEN 4 19 Jul 2021 12:00 140 1 thousand
- - - - China
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 12:00 UTC
LevelCountryPopulation 
500-750 mmChina27,729 
250-500 mmChina5,659,035 
100-250 mmChina, Hong Kong, Macao15,887,016
+
China15,305,236 
Hong Kong2,127 
Macao579,652 
50-100 mmChina, Hong Kong28,630,913
+
China22,580,761 
Hong Kong6,050,152 

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 06:00 138 -
- - - - - China
Blue 4 19 Jul 2021 12:00 789 21.6 million
- - China, Hong Kong, Macao




Impact estimation for the next 72h
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StormSurge

1.2 m

The maximum Storm surge height is  1.2m in Chengcun, China. This height is estimated for 20 Jul 2021 15:45 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 12:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
20 Jul 2021 15:45 Chengcun China  1.2
20 Jul 2021 15:45 Santouzui China  1.2
20 Jul 2021 15:45 Hsi-t'ou China  1.2
20 Jul 2021 15:45 Lengzilin China  1.2
20 Jul 2021 15:45 Pinggang China  1.2
20 Jul 2021 15:45 Jiangcheng China  1.2
20 Jul 2021 15:45 Baipu China  1.2
19 Jul 2021 19:30 Shalan China  1.0
19 Jul 2021 19:30 Dayang China  1.0
19 Jul 2021 19:30 Dalangwan China  1.0
19 Jul 2021 19:30 Guanghai China  1.0
19 Jul 2021 20:00 Luewei China  1.0
19 Jul 2021 20:00 Shadi China  1.0
19 Jul 2021 19:45 Tiantou China  0.8
19 Jul 2021 19:45 Tonggu China  0.8
20 Jul 2021 09:15 Dagou China  0.7
20 Jul 2021 08:30 Beidou China  0.7
20 Jul 2021 08:30 Chen-hai China  0.7
20 Jul 2021 08:30 Shen-ching China  0.7
20 Jul 2021 06:45 Hsin-chou China  0.6
19 Jul 2021 21:15 Doushan China  0.6
19 Jul 2021 21:15 Chixi China  0.6
19 Jul 2021 17:00 Mashan China  0.5
19 Jul 2021 17:00 Pingsha China  0.5
19 Jul 2021 18:15 Meige China  0.5
19 Jul 2021 18:15 Doumen China  0.5
22 Jul 2021 12:00 San Shah China  0.5
22 Jul 2021 12:00 Gaoshan China  0.5
22 Jul 2021 12:00 Ta-ch'iu China  0.5
22 Jul 2021 12:00 Beicuo China  0.5
22 Jul 2021 12:00 Guanjing China  0.5
22 Jul 2021 12:00 Cao Yu China  0.5
22 Jul 2021 12:00 Qingfeng China  0.5
22 Jul 2021 12:00 Pingtan China  0.5
19 Jul 2021 12:15 Nanping China  0.4
19 Jul 2021 12:15 Xiazha China  0.4
19 Jul 2021 12:15 Maogang China  0.4
19 Jul 2021 12:15 Macau Macau (China)  0.4
19 Jul 2021 12:15 Taipa Macau (China)  0.4
19 Jul 2021 12:15 Coloane Macau (China)  0.4
19 Jul 2021 12:15 Heung chau China  0.4
19 Jul 2021 21:45 Huangchong China  0.4
19 Jul 2021 21:45 Mei-ko China  0.4
19 Jul 2021 22:00 Ching-an China  0.4
19 Jul 2021 22:00 Xiaolin China  0.4
19 Jul 2021 18:00 Baijiao China  0.4
19 Jul 2021 18:00 San-tsao China  0.4
22 Jul 2021 00:30 Caotan China  0.4
19 Jul 2021 12:00 Cuihengcun China  0.4
19 Jul 2021 12:00 Min-chung China  0.4
19 Jul 2021 12:00 Qishan China  0.4
19 Jul 2021 12:00 Cheng'anwei China  0.4
19 Jul 2021 12:00 Ch'i-ao China  0.4
19 Jul 2021 12:00 Wan-ch'ing-sha China  0.3
22 Jul 2021 00:00 Yingluo China  0.3
22 Jul 2021 00:00 Longtousha China  0.3
22 Jul 2021 00:00 Yingzai China  0.3
21 Jul 2021 15:45 Ma-hsieh China  0.3
21 Jul 2021 15:45 Badongxu China  0.3
21 Jul 2021 15:45 Potou China  0.3
21 Jul 2021 15:45 Bengtang China  0.3
21 Jul 2021 15:45 Baisha China  0.3
21 Jul 2021 15:45 Shaoyao China  0.3
21 Jul 2021 15:45 Xingyou China  0.3
21 Jul 2021 15:45 Huangpo China  0.3
21 Jul 2021 15:45 Chiu-wu-ch'uan China  0.3
21 Jul 2021 00:30 Diancheng China  0.3
21 Jul 2021 00:30 Rudong China  0.3
22 Jul 2021 12:00 Ch'i-shui China  0.3
22 Jul 2021 12:00 Haikang China  0.3
19 Jul 2021 19:00 Fan Kwai Tong Hong Kong (China)  0.3
19 Jul 2021 19:00 Nantou China  0.3
19 Jul 2021 15:45 Wanshan China  0.3
22 Jul 2021 12:00 Houtian China  0.3
19 Jul 2021 22:30 Yuen Long Hong Kong (China)  0.2
19 Jul 2021 22:30 Tai Po Hong Kong (China)  0.2
19 Jul 2021 22:30 Tai Po Industrial Estate Hong Kong (China)  0.2
19 Jul 2021 22:30 Fung Yuen Hong Kong (China)  0.2
19 Jul 2021 22:30 Dabu Hong Kong (China)  0.2
19 Jul 2021 22:30 Sha Tau Kok China  0.2
19 Jul 2021 22:30 Cheung Kang Hong Kong (China)  0.2
19 Jul 2021 22:30 Imtin China  0.2
19 Jul 2021 22:30 Cheung Wo Hong Kong (China)  0.2
19 Jul 2021 22:30 Pak Sha Au Hong Kong (China)  0.2
19 Jul 2021 22:30 Long Ke Hong Kong (China)  0.2
19 Jul 2021 22:30 Khitschhung China  0.2
19 Jul 2021 12:15 Heping China  0.2
20 Jul 2021 07:45 Huangge China  0.2
20 Jul 2021 07:45 Jiang'ouwei China  0.2
20 Jul 2021 07:45 Fumunchai China  0.2
20 Jul 2021 07:45 Fumuntschai China  0.2
20 Jul 2021 07:45 Baihao China  0.2
20 Jul 2021 07:45 Taiping China  0.2
20 Jul 2021 07:45 Sha-ching China  0.2
19 Jul 2021 23:00 Cheung Sha Wan Hong Kong (China)  0.2
19 Jul 2021 23:00 Tsz Wa Chan Hong Kong (China)  0.2
19 Jul 2021 23:00 Yau Ma Po Hong Kong (China)  0.2
19 Jul 2021 23:00 Sai Kung Hong Kong (China)  0.2
19 Jul 2021 12:00 Lajiwei China  0.2
20 Jul 2021 18:30 Shangyang China  0.2
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
19 Jul 2021 13:45 Houmen China  0.2
19 Jul 2021 19:15 Tai Long Wan Hong Kong (China)  0.2
19 Jul 2021 19:15 Shekou China  0.2
19 Jul 2021 19:15 Lau Fau Sha Hong Kong (China)  0.2
19 Jul 2021 15:00 Hsia-yung China  0.2
19 Jul 2021 13:30 Chiu-chieh China  0.2
19 Jul 2021 13:30 Ngau Kwu Long Hong Kong (China)  0.2
19 Jul 2021 13:30 Castle Peak New Town Hong Kong (China)  0.2
19 Jul 2021 13:30 Tuen Mun Hong Kong (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 14:30 Fanhe China  0.2
19 Jul 2021 14:30 Pinghai China  0.2
19 Jul 2021 13:30 Ham Tin Hong Kong (China)  0.2
19 Jul 2021 13:30 Yuen Long Hong Kong (China)  0.2
19 Jul 2021 13:30 Sz Pak Hong Kong (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 13:45 Jiesheng China  0.2
19 Jul 2021 13:45 Tianqian China  0.2
19 Jul 2021 13:45 Zhelang China  0.2
19 Jul 2021 14:15 Magong China  0.2
19 Jul 2021 14:15 Jizhongtuo China  0.2
19 Jul 2021 14:15 Shanwei China  0.2
19 Jul 2021 14:00 Gangkou 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 21:15 Nam Wan Hong Kong (China)  0.2
19 Jul 2021 21:15 Hoi Pa Hong Kong (China)  0.2
19 Jul 2021 21:15 Lo Tik Wan Hong Kong (China)  0.2
19 Jul 2021 21:15 Tsuen Wan Hong Kong (China)  0.2
19 Jul 2021 21:15 Lo So Shing Hong Kong (China)  0.2
19 Jul 2021 21:15 Ha Kwai Chung Hong Kong (China)  0.2
19 Jul 2021 21:15 Pok Fu Lam Hong Kong (China)  0.2
19 Jul 2021 21:15 Wa Fu Estate Hong Kong (China)  0.2
19 Jul 2021 21:15 Kennedy Town Hong Kong (China)  0.2
19 Jul 2021 21:15 Aberdeen Hong Kong (China)  0.2
19 Jul 2021 21:15 Won Hang Hong Kong (China)  0.2
19 Jul 2021 21:15 Tain Sha Tsui Hong Kong (China)  0.2
19 Jul 2021 21:15 Central Hong Kong (China)  0.2
19 Jul 2021 21:15 Kowloon Hong Kong (China)  0.2
19 Jul 2021 21:15 Wan Chai Hong Kong (China)  0.2
19 Jul 2021 21:15 Chung Hom Kok Hong Kong (China)  0.2
19 Jul 2021 21:15 North Point Hong Kong (China)  0.2
19 Jul 2021 21:15 Chek Chue Hong Kong (China)  0.2
19 Jul 2021 21:15 Crocodile Hill Hong Kong (China)  0.2
19 Jul 2021 14:00 Tai Tam Hong Kong (China)  0.2
19 Jul 2021 14:00 Stanley Hong Kong (China)  0.2
19 Jul 2021 14:00 San Wan Ho Shau Hong Kong (China)  0.2
19 Jul 2021 14:00 Yau Tong Hong Kong (China)  0.2
19 Jul 2021 14:00 Rennie's Mill Hong Kong (China)  0.2
19 Jul 2021 14:00 A Kung Ngam Hong Kong (China)  0.2
19 Jul 2021 14:00 Chai Wan Hong Kong (China)  0.2
19 Jul 2021 14:00 Sau Mau Ping Hong Kong (China)  0.2
19 Jul 2021 14:00 Hok Tsui Wan Hong Kong (China)  0.2
19 Jul 2021 14:00 Chik Sha Hong Kong (China)  0.2
19 Jul 2021 14:00 Hang Hau Hong Kong (China)  0.2
21 Jul 2021 15:30 Shuidong China  0.2
21 Jul 2021 15:30 Ch'i-ching China  0.2
21 Jul 2021 15:30 Dianbai China  0.2
21 Jul 2021 15:30 Danchang China  0.2
21 Jul 2021 15:30 Magang China  0.2
19 Jul 2021 13:30 Jieshi China  0.2
19 Jul 2021 20:00 Wangchuan China  0.2
19 Jul 2021 20:00 Fengting China  0.2
19 Jul 2021 20:00 Dawu China  0.2
19 Jul 2021 20:00 Fengwei China  0.2
19 Jul 2021 20:00 Hsiao-tso China  0.2
19 Jul 2021 20:00 Zhongmen China  0.2
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 15:30 Taiping China  0.1
19 Jul 2021 15:30 Xianmai China  0.1
19 Jul 2021 15:30 Longshe China  0.1
19 Jul 2021 15:30 Dongli 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 15:15 Tung-li China  0.1
19 Jul 2021 15:15 Dongshan China  0.1
21 Jul 2021 15:15 Meilu China  0.1
21 Jul 2021 15:15 Hai-lu China  0.1
22 Jul 2021 06:45 Gongche China  0.1
22 Jul 2021 06:45 Maoling China  0.1
22 Jul 2021 06:45 Kangxiling China  0.1
22 Jul 2021 06:45 Longmen China  0.1
22 Jul 2021 06:45 Jiuya China  0.1
22 Jul 2021 06:45 Dafanpo China  0.1
22 Jul 2021 06:45 Pingshan 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 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
22 Jul 2021 12:00 Liu-sha-ying China  0.1
19 Jul 2021 13:00 Shenquan 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 14:45 Dahao China  0.1
19 Jul 2021 14:45 Aotou China  0.1
19 Jul 2021 14:45 Daitou China  0.1
19 Jul 2021 14:45 Guangao China  0.1
19 Jul 2021 20:00 Nanri China  0.1
19 Jul 2021 20:00 Fuye China  0.1
19 Jul 2021 14:45 Dongjian China  0.1
19 Jul 2021 14:45 Houhu China  0.1
19 Jul 2021 14:45 Houhai 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 Shantou China  0.1
22 Jul 2021 12:00 Chia-ho-ts'un Taiwan  0.1
22 Jul 2021 12:00 Fang-shan Taiwan  0.1
22 Jul 2021 12:00 Feng-chiang Taiwan  0.1
22 Jul 2021 12:00 She-liao Taiwan  0.1
22 Jul 2021 12:00 Che-cheng Taiwan  0.1
19 Jul 2021 14:15 Donghong China  0.1
19 Jul 2021 14:15 Jinghai China  0.1
22 Jul 2021 11:45 Maobitou Taiwan  0.1
22 Jul 2021 11:45 Ta-kuang Taiwan  0.1
22 Jul 2021 12:00 Liu-chiu Hsu Taiwan  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
22 Jul 2021 11:45 T'ien-ch'ien-ts'o Taiwan  0.1
22 Jul 2021 11:45 Shui-ti-liao Taiwan  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 20:00 Hushi China  0.1
19 Jul 2021 20:00 Pinghai China  0.1
19 Jul 2021 20:15 Yuxi China  0.1
19 Jul 2021 20:15 Longtian 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 14:30 Huangwu China  0.1
19 Jul 2021 14:30 Nayan China  0.1
22 Jul 2021 12:00 Hou-ta-ts'o Taiwan  0.1
22 Jul 2021 12:00 Tung-chiang Taiwan  0.1
22 Jul 2021 12:00 Wu-lung Taiwan  0.1