Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China

Impact

Tropical Cyclone CEMPAKA-21 can have a medium humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GFS
Exposed countries
Exposed population No people in Category 1 or higher
Maximum wind speed 58 km/h
Maximum storm surge 0.6 m (26 Jul 18:00 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
GFS Current 58 km/h 0.6 m 153 mm 0.5
GFS Overall 144 km/h 1.2 m 795 mm 0.5

Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

Wind

144 km/h

No people by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

No exposed population (in Tropical Storm or higher) based on the bulletin of 23 Jul 2021 18:00 UTC

See TC classification SSHS


Wind Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert 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 72 - - - - - - -
GREEN 2 19 Jul 2021 00:00 108 - - - - - - -
GREEN 3 19 Jul 2021 06:00 94 - - - - - - -
GREEN 4 19 Jul 2021 12:00 108 -
- - - - - China
GREEN 5 19 Jul 2021 18:00 112 - - - - - - -
GREEN 6 20 Jul 2021 00:00 144 -
- - - - - China
GREEN 7 20 Jul 2021 06:00 126 -
- - - - - China
GREEN 8 20 Jul 2021 12:00 119 -
- - - - - China
GREEN 9 20 Jul 2021 18:00 65 -
- - - - - China
GREEN 10 21 Jul 2021 00:00 54 - - - - - - -
GREEN 11 21 Jul 2021 06:00 58 - - - - - - -
GREEN 12 21 Jul 2021 12:00 58 - - - - - - -
GREEN 13 21 Jul 2021 18:00 54 - - - - - - -
GREEN 14 22 Jul 2021 00:00 61 -
- - - - - Taiwan
GREEN 15 22 Jul 2021 06:00 61 -
- - - - - Taiwan
GREEN 16 22 Jul 2021 12:00 54 - - - - - - -
GREEN 17 22 Jul 2021 18:00 58 - - - - - - -
GREEN 18 23 Jul 2021 00:00 68 - - - - - - -
GREEN 19 23 Jul 2021 06:00 61 - - - - - - -
GREEN 20 23 Jul 2021 12:00 54 - - - - - - -
GREEN 21 23 Jul 2021 18:00 58 - - - - - - -




Impact estimation for the next 72h
Download:





Rain exposed population - AoIs

Estimations based on the bulletin of 23 Jul 2021 18:00 UTC
LevelCountryPopulation 
250-500 mmChina232,806 
100-250 mmChina, Laos, Vietnam, Thailand, Philippines9,508,959
+
China704,619 
Laos512,013 
Vietnam253 
Philippines4,344,540 
Thailand3,947,533 
50-100 mmChina, Taiwan, Laos, Vietnam, Philippines, Thailand20,327,403
+
China10,616,030 
Taiwan68,253 
Laos2,246,336 
Vietnam375,704 
Philippines3,320,950 
Thailand3,700,127 

Rain Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert 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 18:00 142 80 thousand
- - - - Laos, Vietnam, Cambodia
Blue 2 19 Jul 2021 00:00 171 -
- - - - - Laos, Cambodia
Blue 3 19 Jul 2021 06:00 157 -
- - - - - Hong Kong, China
Blue 4 19 Jul 2021 12:00 126 - - - - - - -
Blue 5 19 Jul 2021 18:00 223 -
- - - - - Laos, Vietnam
Blue 6 20 Jul 2021 00:00 221 Few people
- - - - China, Laos, Thailand
Blue 7 20 Jul 2021 06:00 274 170 thousand
- - - - China
Blue 8 20 Jul 2021 12:00 187 440 thousand
- - - - China
Blue 9 20 Jul 2021 18:00 151 790 thousand
- - - - China
Blue 10 21 Jul 2021 00:00 75 -
- - - - - China
Blue 11 21 Jul 2021 06:00 66 -
- - - - - China
Blue 12 21 Jul 2021 12:00 103 Few people
- - - - China, Laos, Thailand
Blue 13 21 Jul 2021 18:00 107 10 thousand
- - - - China, Laos, Thailand
Blue 14 22 Jul 2021 00:00 103 -
- - - - - China
Blue 15 22 Jul 2021 06:00 39 - - - - - - -
Blue 16 22 Jul 2021 12:00 62 -
- - - - - Philippines
Blue 17 22 Jul 2021 18:00 147 680 thousand
- - - - China, Laos, Thailand, Philippines
Blue 18 23 Jul 2021 00:00 68 -
- - - - - Vietnam
Blue 19 23 Jul 2021 06:00 65 -
- - - - - Vietnam
Blue 20 23 Jul 2021 12:00 107 9 thousand
- - - - Vietnam, Laos
Blue 21 23 Jul 2021 18:00 347 9.7 million
- - - China, Taiwan, Laos, Vietnam, Philippines, Thailand




Impact estimation for the next 72h

StormSurge

0.6 m

The maximum Storm surge height is  0.6m in Pucheng, China. This height is estimated for 26 Jul 2021 18:00 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 locations

Calculation based on the bulletin of 23 Jul 2021 18:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
26 Jul 2021 18:00 Pucheng China  0.6
26 Jul 2021 18:00 Sha-fan-chieh China  0.6
26 Jul 2021 18:00 Jinxiang China  0.6
26 Jul 2021 17:00 Shacheng China  0.5
26 Jul 2021 17:00 Xiaguan China  0.5
26 Jul 2021 17:00 Huang-ch'i China  0.5
26 Jul 2021 16:30 Yacheng China  0.4
26 Jul 2021 16:30 Sansha China  0.4
26 Jul 2021 16:15 Changchun China  0.4
26 Jul 2021 16:15 Wuqu China  0.4
26 Jul 2021 17:00 Luxia China  0.4
26 Jul 2021 17:15 Xiahu China  0.4
26 Jul 2021 17:15 Da'ao China  0.4
26 Jul 2021 17:45 Tung-ch'ung China  0.4
26 Jul 2021 17:45 Xinan China  0.4
26 Jul 2021 18:00 Anhai China  0.4
26 Jul 2021 18:00 Ting-hai China  0.4
26 Jul 2021 18:00 Bili China  0.4
26 Jul 2021 18:00 Chien-chiang China  0.4
26 Jul 2021 18:00 Ch'ang-t'an-wo Taiwan  0.4
26 Jul 2021 18:00 Tung-tai China  0.3
26 Jul 2021 18:00 Baisheng China  0.3
26 Jul 2021 18:00 Mabi China  0.3
26 Jul 2021 18:00 Guanban China  0.3
26 Jul 2021 18:00 Langqi China  0.3
26 Jul 2021 18:00 Changmen China  0.3
26 Jul 2021 18:00 Fengwo China  0.3
26 Jul 2021 18:00 Yunlong China  0.3
26 Jul 2021 18:00 Tantou China  0.3
26 Jul 2021 18:00 Chin-feng China  0.3
26 Jul 2021 18:00 Wuhang China  0.3
26 Jul 2021 17:15 Chiang-t'ien China  0.3
26 Jul 2021 17:15 Chang-chiang China  0.3
26 Jul 2021 18:00 Guhuai China  0.3
26 Jul 2021 17:15 Guanjing China  0.3
26 Jul 2021 17:15 Qingfeng China  0.3
26 Jul 2021 18:00 Houtian China  0.3
26 Jul 2021 18:00 Pingtan China  0.3
25 Jul 2021 21:30 San Shah China  0.3
25 Jul 2021 21:30 Gaoshan China  0.3
25 Jul 2021 21:30 Beicuo China  0.3
25 Jul 2021 22:00 Ta-ch'iu China  0.3
25 Jul 2021 22:00 Cao Yu China  0.3
24 Jul 2021 19:45 Yingluo China  0.3
24 Jul 2021 19:45 Caotan China  0.3
24 Jul 2021 19:45 Longtousha China  0.3
24 Jul 2021 19:45 Yingzai China  0.3
26 Jul 2021 14:15 Wangchuan China  0.2
26 Jul 2021 14:15 Fengting China  0.2
26 Jul 2021 14:15 Dawu China  0.2
26 Jul 2021 14:15 Fengwei China  0.2
26 Jul 2021 14:15 Hsiao-tso China  0.2
26 Jul 2021 14:15 Zhongmen China  0.2
24 Jul 2021 20:15 Yong'an China  0.2
24 Jul 2021 20:15 Shankou China  0.2
25 Jul 2021 21:00 Chiang-k'ou China  0.2
25 Jul 2021 21:00 Daitou China  0.2
25 Jul 2021 21:00 Tangbian China  0.2
25 Jul 2021 21:00 Shicheng China  0.2
25 Jul 2021 21:00 Jiangjing China  0.2
25 Jul 2021 21:00 Gangtou China  0.2
25 Jul 2021 21:00 Yuxi China  0.2
25 Jul 2021 21:00 Longtian China  0.2
24 Jul 2021 18:30 Beimu China  0.2
24 Jul 2021 18:30 Bailong China  0.2
26 Jul 2021 16:45 Fuye China  0.2
25 Jul 2021 21:00 Nanri China  0.2
26 Jul 2021 14:30 P'u-hsi China  0.2
26 Jul 2021 14:30 P'u-hsi-ch'eng China  0.2
26 Jul 2021 14:30 Meizhou China  0.2
26 Jul 2021 17:45 Pinghai China  0.2
26 Jul 2021 14:00 Dongsha China  0.2
26 Jul 2021 14:00 Lingchuan China  0.2
26 Jul 2021 14:00 Hushi China  0.2
25 Jul 2021 20:45 Shih-shih China  0.2
25 Jul 2021 20:45 Yakou China  0.2
25 Jul 2021 20:45 Yongning China  0.2
25 Jul 2021 20:45 Shihu China  0.2
25 Jul 2021 20:45 Dongyuan China  0.2
25 Jul 2021 20:45 Hsiang-chih China  0.2
25 Jul 2021 20:45 Zhangban China  0.2
25 Jul 2021 20:45 Qian'an China  0.2
25 Jul 2021 20:45 Chongwu China  0.2
26 Jul 2021 17:45 Ch'i-ting Taiwan  0.2
26 Jul 2021 17:45 Tung-hsiao Taiwan  0.2
26 Jul 2021 18:00 Hai huang Taiwan  0.2
26 Jul 2021 18:00 Yuan-li Taiwan  0.2
26 Jul 2021 15:15 Ching-shui Taiwan  0.2
26 Jul 2021 17:15 Dianqian China  0.1
26 Jul 2021 17:15 Jiangtou China  0.1
26 Jul 2021 17:15 Hecuo China  0.1
26 Jul 2021 17:15 Liuwudian China  0.1
26 Jul 2021 17:15 Aotou China  0.1
26 Jul 2021 17:15 Xindian China  0.1
26 Jul 2021 17:15 An-ting Taiwan  0.1
26 Jul 2021 17:15 Chin-men Taiwan  0.1
26 Jul 2021 17:15 Lianhe China  0.1
26 Jul 2021 17:15 Ch'ing-hsu Taiwan  0.1
26 Jul 2021 17:15 Shijing China  0.1
26 Jul 2021 17:15 Chin-men Tao Taiwan  0.1
26 Jul 2021 17:15 Yang-chai Taiwan  0.1
26 Jul 2021 13:45 Weitou China  0.1
26 Jul 2021 13:45 Chin-ching China  0.1
26 Jul 2021 18:00 Ma-chiang China  0.1
26 Jul 2021 15:00 Lu-kang Taiwan  0.1
25 Jul 2021 03:15 Anhai China  0.1
25 Jul 2021 03:15 Tung-shih China  0.1
26 Jul 2021 15:00 Sha-shan Taiwan  0.1
26 Jul 2021 15:00 Wang-kung Taiwan  0.1
26 Jul 2021 15:00 San-hsing Taiwan  0.1
26 Jul 2021 15:00 T'ai-hsi Taiwan  0.1
24 Jul 2021 11:45 Guanjing China  0.1
24 Jul 2021 11:45 Hsi-ch'ang-hsu China  0.1
24 Jul 2021 11:45 Hsi-ch'ang China  0.1
24 Jul 2021 11:45 Shagang China  0.1
26 Jul 2021 15:15 Chung-ch'i Taiwan  0.1
24 Jul 2021 11:00 Longmen China  0.1
24 Jul 2021 11:00 Dafanpo China  0.1
24 Jul 2021 11:00 Hsi-niu-chiao China  0.1
24 Jul 2021 11:00 Pingshan China  0.1
24 Jul 2021 19:15 Gaode China  0.1
24 Jul 2021 19:15 Guchengling China  0.1
26 Jul 2021 17:30 Songyu China  0.1
26 Jul 2021 17:30 Hsing-lin China  0.1
26 Jul 2021 17:30 Xucuo China  0.1
26 Jul 2021 17:30 Gulangyu China  0.1
26 Jul 2021 17:30 Xiamen China  0.1
26 Jul 2021 17:30 Chen-hai China  0.1
26 Jul 2021 17:30 Daomei China  0.1
26 Jul 2021 17:30 Zhenhai China  0.1
26 Jul 2021 15:00 Sa-ti Taiwan  0.1
26 Jul 2021 15:00 Hai-kou Taiwan  0.1
24 Jul 2021 19:45 Beihai China  0.1
26 Jul 2021 18:00 Fugong China  0.1
26 Jul 2021 18:00 Haicang China  0.1
26 Jul 2021 18:00 Gangwei China  0.1
24 Jul 2021 17:15 Dangjiang China  0.1
24 Jul 2021 17:15 Qianjiang China  0.1
26 Jul 2021 18:00 Guankou China  0.1
25 Jul 2021 17:15 Hsia-lun Taiwan  0.1
25 Jul 2021 17:00 Hsin-chiang Taiwan  0.1
25 Jul 2021 17:00 Wu-nan Taiwan  0.1
25 Jul 2021 16:15 Chu-kao-wan Taiwan  0.1
25 Jul 2021 16:15 Ch'ang-an Taiwan  0.1
25 Jul 2021 16:15 Ch'eng-ch'ien Taiwan  0.1
25 Jul 2021 16:15 Chi-pei Taiwan  0.1
24 Jul 2021 11:30 Gongche China  0.1
24 Jul 2021 11:30 Ch'i-sha China  0.1
25 Jul 2021 16:30 Wai-an Taiwan  0.1
25 Jul 2021 16:30 Feng-kuei-li Taiwan  0.1
25 Jul 2021 16:30 P'eng-hu-erh-ts'un Taiwan  0.1
25 Jul 2021 16:30 Ma-kung Taiwan  0.1
25 Jul 2021 16:30 Lung-men Taiwan  0.1
25 Jul 2021 18:15 Fotan China  0.1
25 Jul 2021 16:15 Chu-mu-shui Taiwan  0.1
25 Jul 2021 16:30 Hua-hsu Taiwan  0.1