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 54 km/h
Maximum storm surge 0.5 m (25 Jul 22:45 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
GFS Current 54 km/h 0.5 m 107 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 12:00 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 58 - - - - - - -
Download:





Impact estimation for the next 72h




Rain exposed population - AoIs

Estimations based on the bulletin of 23 Jul 2021 12:00 UTC
LevelCountryPopulation 
250-500 mmChina, Laos341,091
+
China327,384 
Laos13,706 
100-250 mmChina, Laos, Vietnam, Philippines, Thailand13,489,107
+
China1,022,769 
Laos1,127,335 
Vietnam2,255,425 
Philippines5,063,097 
Thailand4,020,480 
50-100 mmChina, Taiwan, Laos, Vietnam, Philippines, Thailand22,598,456
+
China9,385,151 
Taiwan20,492 
Laos1,648,746 
Vietnam5,734,409 
Philippines2,559,983 
Thailand3,249,672 

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 12:00 413 13.8 million
- - - China, Taiwan, Laos, Vietnam, Philippines, Thailand




Impact estimation for the next 72h

StormSurge

0.5 m

The maximum Storm surge height is  0.5m in Pucheng, China. This height is estimated for 25 Jul 2021 22:45 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 23 Jul 2021 12:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
25 Jul 2021 22:45 Pucheng China  0.5
25 Jul 2021 22:45 Sha-fan-chieh China  0.5
25 Jul 2021 22:45 Jinxiang China  0.5
25 Jul 2021 16:45 Shacheng China  0.4
25 Jul 2021 16:45 Xiaguan China  0.4
25 Jul 2021 16:45 Huang-ch'i China  0.4
25 Jul 2021 17:30 Yacheng China  0.4
25 Jul 2021 17:30 Sansha China  0.4
25 Jul 2021 18:45 Xiahu China  0.4
25 Jul 2021 18:45 Da'ao China  0.4
25 Jul 2021 18:45 Changchun China  0.4
25 Jul 2021 18:45 Luxia China  0.4
25 Jul 2021 18:00 Wuqu China  0.4
25 Jul 2021 18:15 Tung-ch'ung China  0.4
25 Jul 2021 18:15 Xinan China  0.4
25 Jul 2021 18:00 Ting-hai China  0.4
25 Jul 2021 18:00 Anhai China  0.4
25 Jul 2021 18:00 Bili China  0.4
25 Jul 2021 18:00 Chien-chiang China  0.4
25 Jul 2021 18:30 Ch'ang-t'an-wo Taiwan  0.3
25 Jul 2021 19:15 Tung-tai China  0.3
25 Jul 2021 19:15 Baisheng China  0.3
25 Jul 2021 19:15 Mabi China  0.3
25 Jul 2021 19:15 Guanban China  0.3
25 Jul 2021 19:15 Langqi China  0.3
25 Jul 2021 19:15 Changmen China  0.3
25 Jul 2021 19:15 Fengwo China  0.3
25 Jul 2021 19:15 Yunlong China  0.3
25 Jul 2021 18:45 Tantou China  0.3
25 Jul 2021 18:45 Chin-feng China  0.3
25 Jul 2021 18:45 Wuhang China  0.3
25 Jul 2021 20:00 Guhuai China  0.3
25 Jul 2021 20:00 Chiang-t'ien China  0.3
25 Jul 2021 20:00 Chang-chiang China  0.3
25 Jul 2021 20:00 Guanjing China  0.3
25 Jul 2021 20:00 Qingfeng China  0.3
25 Jul 2021 20:00 Pingtan China  0.3
25 Jul 2021 20:00 Houtian China  0.3
25 Jul 2021 19:15 Beicuo China  0.3
25 Jul 2021 21:00 San Shah China  0.3
25 Jul 2021 21:00 Gaoshan 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 20:00 Yingluo China  0.2
24 Jul 2021 20:00 Caotan China  0.2
24 Jul 2021 20:00 Longtousha China  0.2
24 Jul 2021 20:00 Yingzai China  0.2
25 Jul 2021 21:00 Yuxi China  0.2
25 Jul 2021 21:00 Tangbian China  0.2
25 Jul 2021 21:00 Jiangjing China  0.2
25 Jul 2021 21:00 Longtian China  0.2
25 Jul 2021 21:00 Gangtou China  0.2
25 Jul 2021 20:45 Chiang-k'ou China  0.2
25 Jul 2021 20:45 Daitou China  0.2
25 Jul 2021 20:45 Shicheng China  0.2
25 Jul 2021 21:00 Nanri China  0.2
25 Jul 2021 21:00 Fuye China  0.2
25 Jul 2021 21:45 Wangchuan China  0.2
25 Jul 2021 21:45 Fengting China  0.2
25 Jul 2021 21:45 Dawu China  0.2
25 Jul 2021 21:45 Fengwei China  0.2
25 Jul 2021 21:45 Hsiao-tso China  0.2
25 Jul 2021 21:45 Zhongmen China  0.2
25 Jul 2021 21:15 P'u-hsi China  0.2
25 Jul 2021 21:15 P'u-hsi-ch'eng China  0.2
25 Jul 2021 21:15 Meizhou China  0.2
24 Jul 2021 18:30 Beimu China  0.2
24 Jul 2021 18:30 Yong'an China  0.2
24 Jul 2021 18:30 Shankou China  0.2
24 Jul 2021 18:30 Bailong China  0.2
25 Jul 2021 21:15 Dongsha China  0.2
25 Jul 2021 21:15 Lingchuan China  0.2
25 Jul 2021 21:15 Hushi China  0.2
25 Jul 2021 20:45 Pinghai China  0.2
25 Jul 2021 22:00 Qian'an China  0.2
25 Jul 2021 22:00 Chongwu China  0.2
25 Jul 2021 20:15 Ch'i-ting Taiwan  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 20:15 Tung-hsiao Taiwan  0.2
25 Jul 2021 20:30 Hai huang Taiwan  0.2
25 Jul 2021 20:30 Yuan-li Taiwan  0.2
25 Jul 2021 20:30 Ching-shui Taiwan  0.2
25 Jul 2021 22:30 Weitou China  0.1
25 Jul 2021 22:30 Chin-ching China  0.1
25 Jul 2021 20:45 Lu-kang Taiwan  0.1
25 Jul 2021 21:00 Lianhe China  0.1
25 Jul 2021 21:00 Ch'ing-hsu Taiwan  0.1
25 Jul 2021 21:00 Shijing China  0.1
25 Jul 2021 21:00 Chin-men Tao Taiwan  0.1
25 Jul 2021 21:00 Yang-chai Taiwan  0.1
25 Jul 2021 21:00 Anhai China  0.1
25 Jul 2021 21:00 Tung-shih China  0.1
25 Jul 2021 21:15 Chin-men Taiwan  0.1
25 Jul 2021 21:00 Sha-shan Taiwan  0.1
25 Jul 2021 21:00 Wang-kung Taiwan  0.1
25 Jul 2021 20:45 San-hsing Taiwan  0.1
25 Jul 2021 20:45 T'ai-hsi Taiwan  0.1
24 Jul 2021 18:15 Hsi-ch'ang-hsu China  0.1
24 Jul 2021 18:15 Hsi-ch'ang China  0.1
24 Jul 2021 18:15 Shagang China  0.1
24 Jul 2021 18:15 Beihai China  0.1
24 Jul 2021 18:15 Dangjiang China  0.1
24 Jul 2021 18:15 Gaode China  0.1
24 Jul 2021 18:15 Guchengling China  0.1
24 Jul 2021 18:15 Qianjiang China  0.1
25 Jul 2021 20:45 Chung-ch'i Taiwan  0.1
24 Jul 2021 10:45 Longmen China  0.1
24 Jul 2021 10:45 Dafanpo China  0.1
24 Jul 2021 10:45 Hsi-niu-chiao China  0.1
24 Jul 2021 10:45 Pingshan China  0.1
24 Jul 2021 11:45 Guanjing China  0.1
25 Jul 2021 21:00 Aotou China  0.1
25 Jul 2021 21:00 An-ting Taiwan  0.1
25 Jul 2021 21:15 Hecuo China  0.1
25 Jul 2021 21:15 Songyu China  0.1
25 Jul 2021 21:15 Hsing-lin China  0.1
25 Jul 2021 21:15 Xucuo China  0.1
25 Jul 2021 21:15 Gulangyu China  0.1
25 Jul 2021 21:15 Xiamen China  0.1
25 Jul 2021 21:15 Chen-hai China  0.1
25 Jul 2021 21:15 Daomei China  0.1
25 Jul 2021 21:15 Dianqian China  0.1
25 Jul 2021 21:15 Jiangtou China  0.1
25 Jul 2021 21:15 Zhenhai China  0.1
25 Jul 2021 21:15 Liuwudian China  0.1
25 Jul 2021 20:30 Sa-ti Taiwan  0.1
25 Jul 2021 20:30 Hai-kou Taiwan  0.1
26 Jul 2021 12:00 Xindian China  0.1
26 Jul 2021 12:00 Ma-chiang China  0.1
25 Jul 2021 20:45 Hsia-lun Taiwan  0.1
25 Jul 2021 21:30 Wai-an Taiwan  0.1
25 Jul 2021 21:30 Chu-kao-wan Taiwan  0.1
25 Jul 2021 21:30 Feng-kuei-li Taiwan  0.1
25 Jul 2021 21:30 Ch'ang-an Taiwan  0.1
25 Jul 2021 21:30 P'eng-hu-erh-ts'un Taiwan  0.1
25 Jul 2021 21:30 Ma-kung Taiwan  0.1
25 Jul 2021 21:30 Ch'eng-ch'ien Taiwan  0.1
25 Jul 2021 21:30 Chi-pei Taiwan  0.1
25 Jul 2021 21:30 Lung-men Taiwan  0.1
24 Jul 2021 11:30 Gongche China  0.1
24 Jul 2021 11:30 Ch'i-sha China  0.1
24 Jul 2021 09:00 Ch'i-shui China  0.1
24 Jul 2021 09:00 Haikang China  0.1
25 Jul 2021 20:45 Hsin-chiang Taiwan  0.1
25 Jul 2021 20:45 Wu-nan Taiwan  0.1
25 Jul 2021 22:45 Fugong China  0.1
25 Jul 2021 22:45 Haicang China  0.1
25 Jul 2021 22:45 Gangwei China  0.1
25 Jul 2021 20:45 Fotan China  0.1
24 Jul 2021 08:30 Hai Phong Vietnam  0.1
24 Jul 2021 08:30 Thuy U Vietnam  0.1
24 Jul 2021 08:30 Dai Loc Vietnam  0.1
24 Jul 2021 08:30 Quang Yen Vietnam  0.1
24 Jul 2021 08:30 Hoang Chau Vietnam  0.1
24 Jul 2021 06:45 Paipu China  0.1
24 Jul 2021 06:45 Baimajing China  0.1
24 Jul 2021 06:45 Hsin-ying China  0.1
24 Jul 2021 06:45 Eman China  0.1
24 Jul 2021 06:45 Taan China  0.1
24 Jul 2021 06:45 Hsin-chou China  0.1
25 Jul 2021 23:15 Guankou China  0.1
25 Jul 2021 21:15 Chu-mu-shui Taiwan  0.1
25 Jul 2021 20:45 Chihu China  0.1
25 Jul 2021 21:15 Hua-hsu Taiwan  0.1
24 Jul 2021 13:00 Hsia-yung China  0.1
24 Jul 2021 13:00 Renshan China  0.1
24 Jul 2021 13:00 Jen-shan China  0.1
24 Jul 2021 13:00 Fanhe China  0.1
24 Jul 2021 13:00 Pinghai China  0.1
24 Jul 2021 08:30 Gia Luan Vietnam  0.1
24 Jul 2021 09:00 Bailong China  0.1
24 Jul 2021 09:00 Jiangshan China  0.1
24 Jul 2021 09:00 Baishawan China  0.1
24 Jul 2021 09:00 Fangcheng China  0.1
24 Jul 2021 09:00 Mong Cai Vietnam  0.1
24 Jul 2021 09:00 Jiangpingxu China  0.1
24 Jul 2021 09:00 Jiangping China  0.1
24 Jul 2021 09:00 Wanwei China  0.1