Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
19 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
Exposed population 8 thousand in Category 1 or higher
Maximum wind speed 122 km/h
Maximum storm surge 1.1 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 122 km/h 1.1 m 277 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 8 thousand in Category 1 strength or higher (see SSHS)



Wind exposed population - AoIs

Estimations based on the bulletin of 19 Jul 2021 18:00 UTC
CategoryCountryPopulation 
CAT. 1China7,716 
Tropical StormChina10,913,707 

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 12:00 119 -
- - - - - China
GREEN 5 19 Jul 2021 18:00 140 8 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 18:00 UTC
LevelCountryPopulation 
500-750 mmChina742 
250-500 mmChina2,395,502 
100-250 mmChina, Hong Kong, Macao16,402,633
+
China15,749,539 
Hong Kong73,441 
Macao579,652 
50-100 mmChina, Hong Kong, Vietnam12,298,460
+
China12,253,152 
Hong Kong45,098 
Vietnam209 

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 12:00 274 -
- - - - - China
Blue 5 19 Jul 2021 18:00 593 18.8 million
- - China, Hong Kong, Macao, Vietnam




Impact estimation for the next 72h
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StormSurge

1.1 m

The maximum Storm surge height is  1.1m 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 18:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
20 Jul 2021 15:45 Chengcun China  1.1
20 Jul 2021 15:45 Santouzui China  1.1
20 Jul 2021 15:45 Hsi-t'ou China  1.1
20 Jul 2021 15:45 Lengzilin China  1.1
20 Jul 2021 15:45 Pinggang China  1.1
20 Jul 2021 15:45 Jiangcheng China  1.1
20 Jul 2021 15:45 Baipu China  1.1
19 Jul 2021 18:30 Luewei China  0.9
19 Jul 2021 18:30 Shalan China  0.9
19 Jul 2021 18:30 Shadi China  0.9
19 Jul 2021 18:30 Dalangwan China  0.9
19 Jul 2021 19:00 Dayang China  0.9
19 Jul 2021 19:00 Guanghai China  0.9
19 Jul 2021 18:30 Tiantou China  0.9
19 Jul 2021 18:30 Tonggu China  0.9
20 Jul 2021 09:15 Dagou China  0.8
20 Jul 2021 09:15 Beidou China  0.6
20 Jul 2021 09:15 Chen-hai China  0.6
20 Jul 2021 09:15 Shen-ching China  0.6
22 Jul 2021 14:00 Taiping China  0.6
22 Jul 2021 14:00 Xianmai China  0.6
22 Jul 2021 14:00 Longshe China  0.6
22 Jul 2021 14:00 Dongli China  0.6
22 Jul 2021 14:00 Tung-li China  0.6
22 Jul 2021 14:00 Dongshan China  0.6
19 Jul 2021 19:30 Doushan China  0.5
19 Jul 2021 19:30 Chixi China  0.5
20 Jul 2021 13:15 Hsin-chou China  0.5
22 Jul 2021 18:00 San Shah China  0.5
22 Jul 2021 18:00 Gaoshan China  0.5
22 Jul 2021 18:00 Ta-ch'iu China  0.5
22 Jul 2021 18:00 Beicuo China  0.5
22 Jul 2021 18:00 Guanjing China  0.5
22 Jul 2021 18:00 Cao Yu China  0.5
22 Jul 2021 18:00 Qingfeng China  0.5
22 Jul 2021 18:00 Pingtan China  0.5
19 Jul 2021 18:00 Meige China  0.5
19 Jul 2021 18:00 Mashan China  0.5
19 Jul 2021 18:00 Pingsha China  0.5
19 Jul 2021 18:00 Doumen China  0.5
22 Jul 2021 14:15 Dongjian China  0.4
22 Jul 2021 14:15 Houhu China  0.4
22 Jul 2021 14:15 Houhai China  0.4
22 Jul 2021 14:00 Bengtang China  0.4
19 Jul 2021 18:00 Baijiao China  0.4
19 Jul 2021 18:00 San-tsao China  0.4
19 Jul 2021 18:00 Nanping China  0.4
19 Jul 2021 18:00 Macau Macau (China)  0.4
19 Jul 2021 18:00 Taipa Macau (China)  0.4
19 Jul 2021 18:00 Coloane Macau (China)  0.4
21 Jul 2021 13:15 Ma-hsieh China  0.4
21 Jul 2021 13:15 Badongxu China  0.4
21 Jul 2021 13:15 Potou China  0.4
21 Jul 2021 13:15 Baisha China  0.4
21 Jul 2021 13:15 Shaoyao China  0.4
21 Jul 2021 13:15 Xingyou China  0.4
21 Jul 2021 13:15 Huangpo China  0.4
21 Jul 2021 13:15 Chiu-wu-ch'uan China  0.4
22 Jul 2021 14:00 Huangwu China  0.3
22 Jul 2021 14:00 Nayan China  0.3
19 Jul 2021 18:15 Xiaolin China  0.3
19 Jul 2021 19:45 Huangchong China  0.3
19 Jul 2021 19:45 Mei-ko China  0.3
20 Jul 2021 21:30 Diancheng China  0.3
20 Jul 2021 21:30 Rudong China  0.3
20 Jul 2021 15:15 Shangyang China  0.3
20 Jul 2021 12:45 Min-chung China  0.3
20 Jul 2021 12:45 Wan-ch'ing-sha China  0.3
20 Jul 2021 12:45 Qishan China  0.3
20 Jul 2021 12:45 Cheng'anwei China  0.3
22 Jul 2021 05:45 Zhanjiang China  0.3
22 Jul 2021 05:45 Doulongcun China  0.3
20 Jul 2021 12:30 Cuihengcun China  0.3
20 Jul 2021 12:30 Ch'i-ao China  0.3
19 Jul 2021 18:00 Xiazha China  0.3
19 Jul 2021 18:00 Maogang China  0.3
19 Jul 2021 18:00 Heung chau China  0.3
19 Jul 2021 20:00 Ching-an China  0.3
22 Jul 2021 15:00 Houtian China  0.3
22 Jul 2021 12:45 Guanchang China  0.3
22 Jul 2021 12:45 Jinhe China  0.3
22 Jul 2021 12:45 Wai-lo China  0.3
21 Jul 2021 00:30 Shuidong China  0.3
21 Jul 2021 00:30 Ch'i-ching China  0.3
21 Jul 2021 00:30 Dianbai China  0.3
21 Jul 2021 00:30 Danchang China  0.3
21 Jul 2021 00:30 Magang China  0.3
20 Jul 2021 06:30 Heping China  0.2
19 Jul 2021 23:30 Yuen Long Hong Kong (China)  0.2
19 Jul 2021 23:30 Tai Po Hong Kong (China)  0.2
19 Jul 2021 23:30 Tai Po Industrial Estate Hong Kong (China)  0.2
19 Jul 2021 23:30 Fung Yuen Hong Kong (China)  0.2
19 Jul 2021 23:30 Dabu Hong Kong (China)  0.2
19 Jul 2021 23:30 Sha Tau Kok China  0.2
19 Jul 2021 23:30 Cheung Kang Hong Kong (China)  0.2
19 Jul 2021 23:30 Imtin China  0.2
19 Jul 2021 23:30 Cheung Wo Hong Kong (China)  0.2
19 Jul 2021 23:30 Pak Sha Au Hong Kong (China)  0.2
19 Jul 2021 23:30 Long Ke Hong Kong (China)  0.2
19 Jul 2021 23:30 Khitschhung 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
22 Jul 2021 18:00 Paipu China  0.2
22 Jul 2021 18:00 Baimajing China  0.2
22 Jul 2021 18:00 Hsin-ying China  0.2
22 Jul 2021 18:00 Eman China  0.2
22 Jul 2021 18:00 Taan China  0.2
22 Jul 2021 18:00 Hsin-chou China  0.2
20 Jul 2021 02:30 Fan Kwai Tong Hong Kong (China)  0.2
20 Jul 2021 02:30 Nantou China  0.2
19 Jul 2021 18:00 Wanshan China  0.2
19 Jul 2021 19:15 Chiu-chieh 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 19:15 Ngau Kwu Long Hong Kong (China)  0.2
19 Jul 2021 19:15 Castle Peak New Town Hong Kong (China)  0.2
19 Jul 2021 19:15 Tuen Mun Hong Kong (China)  0.2
21 Jul 2021 16:00 Meilu China  0.2
21 Jul 2021 16:00 Hai-lu China  0.2
20 Jul 2021 13:45 Huangge China  0.2
20 Jul 2021 13:45 Jiang'ouwei China  0.2
20 Jul 2021 13:45 Fumunchai China  0.2
20 Jul 2021 13:45 Fumuntschai China  0.2
20 Jul 2021 13:45 Baihao China  0.2
20 Jul 2021 13:45 Taiping China  0.2
20 Jul 2021 13:45 Sha-ching China  0.2
19 Jul 2021 19:15 Tai Long Wan Hong Kong (China)  0.2
19 Jul 2021 19:15 Ham Tin Hong Kong (China)  0.2
19 Jul 2021 19:15 Yuen Long Hong Kong (China)  0.2
19 Jul 2021 19:15 Sz Pak Hong Kong (China)  0.2
19 Jul 2021 20:30 Dapeng China  0.2
19 Jul 2021 20:30 Taipang China  0.2
19 Jul 2021 20:30 Shagang China  0.2
19 Jul 2021 20:30 Aotou China  0.2
19 Jul 2021 20:30 Luzui China  0.2
20 Jul 2021 02:00 Lajiwei China  0.2
22 Jul 2021 18:00 Qiaotou China  0.2
22 Jul 2021 18:00 Xiuying China  0.2
19 Jul 2021 19:45 Hsia-yung China  0.2
19 Jul 2021 20:30 Renshan China  0.2
19 Jul 2021 20:30 Jen-shan China  0.2
19 Jul 2021 20:30 Fanhe China  0.2
19 Jul 2021 20:30 Pinghai China  0.2
22 Jul 2021 17:30 Haikou China  0.2
20 Jul 2021 00:45 Nam Wan Hong Kong (China)  0.2
20 Jul 2021 00:45 Hoi Pa Hong Kong (China)  0.2
20 Jul 2021 00:45 Lo Tik Wan Hong Kong (China)  0.2
20 Jul 2021 00:45 Tsuen Wan Hong Kong (China)  0.2
20 Jul 2021 00:45 Lo So Shing Hong Kong (China)  0.2
20 Jul 2021 00:45 Ha Kwai Chung Hong Kong (China)  0.2
20 Jul 2021 00:45 Pok Fu Lam Hong Kong (China)  0.2
20 Jul 2021 00:45 Wa Fu Estate Hong Kong (China)  0.2
20 Jul 2021 00:45 Kennedy Town Hong Kong (China)  0.2
20 Jul 2021 00:45 Aberdeen Hong Kong (China)  0.2
20 Jul 2021 00:45 Won Hang Hong Kong (China)  0.2
20 Jul 2021 00:45 Tain Sha Tsui Hong Kong (China)  0.2
20 Jul 2021 00:45 Central Hong Kong (China)  0.2
20 Jul 2021 00:45 Kowloon Hong Kong (China)  0.2
20 Jul 2021 00:45 Wan Chai Hong Kong (China)  0.2
20 Jul 2021 00:45 Chung Hom Kok Hong Kong (China)  0.2
20 Jul 2021 00:45 North Point Hong Kong (China)  0.2
20 Jul 2021 00:45 Chek Chue Hong Kong (China)  0.2
20 Jul 2021 00:45 Crocodile Hill Hong Kong (China)  0.2
20 Jul 2021 13:45 Pucheng China  0.2
20 Jul 2021 13:45 Sha-fan-chieh China  0.2
20 Jul 2021 13:45 Jinxiang China  0.2
19 Jul 2021 22:00 Tei Tong Tsui Hong Kong (China)  0.2
19 Jul 2021 22:00 Tai Wan Tau Hong Kong (China)  0.2
20 Jul 2021 02:00 Houmen China  0.2
19 Jul 2021 20:30 Magong China  0.2
19 Jul 2021 20:30 Jizhongtuo China  0.2
22 Jul 2021 18:00 Maichen China  0.2
22 Jul 2021 18:00 Haian China  0.2
19 Jul 2021 20:45 Shanwei China  0.2
22 Jul 2021 17:30 Boshegang China  0.2
22 Jul 2021 18:00 Xinxing China  0.2
19 Jul 2021 22:15 Tai Tam Hong Kong (China)  0.1
19 Jul 2021 22:15 Stanley Hong Kong (China)  0.1
19 Jul 2021 22:15 San Wan Ho Shau Hong Kong (China)  0.1
19 Jul 2021 22:15 Yau Tong Hong Kong (China)  0.1
19 Jul 2021 22:15 Rennie's Mill Hong Kong (China)  0.1
19 Jul 2021 22:15 A Kung Ngam Hong Kong (China)  0.1
19 Jul 2021 22:15 Chai Wan Hong Kong (China)  0.1
19 Jul 2021 22:15 Sau Mau Ping Hong Kong (China)  0.1
19 Jul 2021 22:15 Hok Tsui Wan Hong Kong (China)  0.1
19 Jul 2021 22:15 Chik Sha Hong Kong (China)  0.1
19 Jul 2021 22:15 Hang Hau Hong Kong (China)  0.1
22 Jul 2021 11:15 Qianshan China  0.1
22 Jul 2021 17:45 Guangcun China  0.1
19 Jul 2021 20:15 Gangkou China  0.1
22 Jul 2021 11:15 Longtang China  0.1
22 Jul 2021 11:15 Puqian China  0.1
21 Jul 2021 22:00 Caotan China  0.1
19 Jul 2021 20:00 Jiesheng China  0.1
19 Jul 2021 20:00 Tianqian China  0.1
19 Jul 2021 20:00 Zhelang China  0.1
20 Jul 2021 02:15 Jieshi China  0.1
20 Jul 2021 02:15 Hudong 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
22 Jul 2021 16:15 Mai-ch'en-hsu China  0.1
22 Jul 2021 01:15 Gongche China  0.1
22 Jul 2021 01:15 Maoling China  0.1
22 Jul 2021 01:15 Kangxiling China  0.1
22 Jul 2021 01:15 Longmen China  0.1
22 Jul 2021 01:15 Jiuya China  0.1
22 Jul 2021 01:15 Dafanpo China  0.1
22 Jul 2021 01:15 Pingshan China  0.1
22 Jul 2021 17:15 Liu-chiu Hsu Taiwan  0.1
22 Jul 2021 17:15 Chia-ho-ts'un Taiwan  0.1
22 Jul 2021 17:15 Fang-shan Taiwan  0.1
22 Jul 2021 17:15 Feng-chiang Taiwan  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 17:45 She-liao Taiwan  0.1
22 Jul 2021 17:45 Che-cheng Taiwan  0.1
22 Jul 2021 18:00 Maobitou Taiwan  0.1
22 Jul 2021 18:00 Ta-kuang Taiwan  0.1
22 Jul 2021 18:00 T'ien-ch'ien-ts'o Taiwan  0.1
22 Jul 2021 18:00 Shui-ti-liao Taiwan  0.1
19 Jul 2021 19:15 P'u-hsi China  0.1
19 Jul 2021 19:15 P'u-hsi-ch'eng China  0.1
19 Jul 2021 19:15 Meizhou China  0.1
22 Jul 2021 18:00 Hou-ta-ts'o Taiwan  0.1
22 Jul 2021 18:00 Tung-chiang Taiwan  0.1
22 Jul 2021 18:00 Wu-lung Taiwan  0.1
22 Jul 2021 17:45 Ta-lin-pu Taiwan  0.1
22 Jul 2021 17:45 I-jen Taiwan  0.1
22 Jul 2021 18:00 Kao-hsiung Taiwan  0.1
22 Jul 2021 16:15 Shuiwei China  0.1
22 Jul 2021 17:45 Kuei-shan Taiwan  0.1
22 Jul 2021 17:45 Hung-nan-li Taiwan  0.1
21 Jul 2021 14:15 Siwei China  0.1
21 Jul 2021 14:15 Huanglong China  0.1
21 Jul 2021 14:15 Houzhai China  0.1
21 Jul 2021 14:15 Zhelin China  0.1
19 Jul 2021 23:30 Jiazi China  0.1
19 Jul 2021 23:30 Changqingwei China  0.1
22 Jul 2021 18:00 K'o-tzu-liao Taiwan  0.1
22 Jul 2021 18:00 Yung-an-ts'un Taiwan  0.1
21 Jul 2021 13:45 Dahao China  0.1
21 Jul 2021 13:45 Aotou China  0.1
21 Jul 2021 13:45 Daitou China  0.1
21 Jul 2021 13:45 Guangao China  0.1
20 Jul 2021 15:00 Donghong China  0.1
20 Jul 2021 15:00 Jinghai China  0.1
20 Jul 2021 15:00 Haimen China  0.1
22 Jul 2021 18:00 Hai-pu Taiwan  0.1
21 Jul 2021 14:15 Ch'ao-yang-hsien China  0.1
20 Jul 2021 05:30 Ky Tan Vietnam  0.1
20 Jul 2021 05:30 Duc Pho Vietnam  0.1
20 Jul 2021 05:30 An Lac Vietnam  0.1
22 Jul 2021 18:00 Chung-ho Taiwan  0.1