Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
22 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 GFS
Exposed countries Taiwan
Exposed population No people in Category 1 or higher
Maximum wind speed 54 km/h
Maximum storm surge 0.4 m (24 Jul 18:45 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 0.4 m 62 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)

TOP

Wind

144 km/h

Up to 30 thousand can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 22 Jul 2021 12:00 UTC
CategoryCountryPopulation 
Tropical StormTaiwan25,795 

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 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 61 -
- - - - - Taiwan
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 22 Jul 2021 12:00 UTC
LevelCountryPopulation 
250-500 mmLaos, Thailand, Philippines121,660
+
Laos48,273 
Philippines57,119 
Thailand16,268 
100-250 mmChina, Laos, Vietnam, Thailand, Philippines18,324,857
+
China786,820 
Vietnam167,167 
Laos2,321,567 
Philippines9,220,948 
Thailand5,828,353 
50-100 mmChina, Vietnam, Laos, Philippines, Thailand, Cambodia35,817,008
+
China10,629,766 
Vietnam20,178,565 
Laos670,643 
Philippines2,090,283 
Thailand2,247,242 
Cambodia507 

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 18:00 142 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 12:00 306 18.4 million
- - - China, Vietnam, Laos, Philippines, Thailand, Cambodia




Impact estimation for the next 72h
TOP

StormSurge

0.4 m

The maximum Storm surge height is  0.4m in Pucheng, China. This height is estimated for 24 Jul 2021 18:45 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 22 Jul 2021 12:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
24 Jul 2021 18:45 Pucheng China  0.4
24 Jul 2021 18:45 Sha-fan-chieh China  0.4
24 Jul 2021 18:45 Jinxiang China  0.4
22 Jul 2021 14:30 San Shah China  0.4
22 Jul 2021 14:30 Gaoshan China  0.4
22 Jul 2021 14:30 Ta-ch'iu China  0.4
22 Jul 2021 14:30 Beicuo China  0.4
22 Jul 2021 14:30 Guanjing China  0.4
22 Jul 2021 14:30 Cao Yu China  0.4
22 Jul 2021 14:30 Qingfeng China  0.4
22 Jul 2021 14:30 Pingtan China  0.4
24 Jul 2021 20:45 Shacheng China  0.4
24 Jul 2021 20:45 Xiaguan China  0.4
24 Jul 2021 21:30 Huang-ch'i China  0.4
24 Jul 2021 20:45 Yacheng China  0.3
24 Jul 2021 20:45 Sansha China  0.3
24 Jul 2021 20:30 Changchun China  0.3
24 Jul 2021 20:30 Wuqu China  0.3
24 Jul 2021 19:45 Xiahu China  0.3
24 Jul 2021 19:45 Da'ao China  0.3
24 Jul 2021 19:45 Luxia China  0.3
24 Jul 2021 21:15 Ting-hai China  0.3
24 Jul 2021 21:15 Anhai China  0.3
24 Jul 2021 21:15 Tung-ch'ung China  0.3
24 Jul 2021 20:45 Xinan China  0.3
24 Jul 2021 21:30 Bili China  0.3
24 Jul 2021 21:15 Chien-chiang China  0.3
24 Jul 2021 21:15 Ch'ang-t'an-wo Taiwan  0.3
24 Jul 2021 21:00 Langqi China  0.3
24 Jul 2021 21:00 Changmen China  0.3
24 Jul 2021 21:00 Fengwo China  0.3
24 Jul 2021 21:00 Yunlong China  0.3
24 Jul 2021 21:00 Tung-tai China  0.3
24 Jul 2021 21:00 Baisheng China  0.3
24 Jul 2021 21:00 Mabi China  0.3
24 Jul 2021 21:00 Guanban China  0.3
24 Jul 2021 21:15 Tantou China  0.3
24 Jul 2021 21:15 Chin-feng China  0.3
24 Jul 2021 21:15 Wuhang China  0.3
24 Jul 2021 20:45 Guhuai China  0.3
24 Jul 2021 20:45 Chiang-t'ien China  0.3
24 Jul 2021 20:45 Chang-chiang China  0.3
24 Jul 2021 21:00 Houtian China  0.3
24 Jul 2021 23:30 Wangchuan China  0.3
24 Jul 2021 23:30 Fengting China  0.3
24 Jul 2021 23:30 Dawu China  0.3
24 Jul 2021 23:30 Fengwei China  0.3
24 Jul 2021 23:30 Hsiao-tso China  0.3
24 Jul 2021 23:30 Zhongmen China  0.3
24 Jul 2021 20:30 Yuxi China  0.2
24 Jul 2021 20:30 Tangbian China  0.2
24 Jul 2021 20:30 Jiangjing China  0.2
24 Jul 2021 20:30 Longtian China  0.2
24 Jul 2021 20:30 Gangtou China  0.2
24 Jul 2021 20:30 Chiang-k'ou China  0.2
24 Jul 2021 20:30 Daitou China  0.2
24 Jul 2021 20:30 Shicheng China  0.2
24 Jul 2021 21:30 Fuye China  0.2
24 Jul 2021 20:30 Nanri China  0.2
24 Jul 2021 23:00 P'u-hsi China  0.2
24 Jul 2021 23:00 P'u-hsi-ch'eng China  0.2
24 Jul 2021 23:00 Meizhou China  0.2
24 Jul 2021 21:45 Hushi China  0.2
24 Jul 2021 21:45 Pinghai China  0.2
24 Jul 2021 22:45 Dongsha China  0.2
24 Jul 2021 22:45 Lingchuan China  0.2
24 Jul 2021 22:00 Qian'an China  0.2
24 Jul 2021 22:00 Chongwu China  0.2
24 Jul 2021 21:30 Ch'i-ting Taiwan  0.2
24 Jul 2021 21:30 Tung-hsiao Taiwan  0.2
24 Jul 2021 21:30 Hai huang Taiwan  0.2
24 Jul 2021 21:30 Yuan-li Taiwan  0.2
24 Jul 2021 21:30 Ching-shui Taiwan  0.2
24 Jul 2021 21:30 Lu-kang Taiwan  0.2
23 Jul 2021 01:00 Bailong China  0.2
23 Jul 2021 01:00 Beimu China  0.2
23 Jul 2021 01:00 Yong'an China  0.2
23 Jul 2021 01:00 Shankou China  0.2
23 Jul 2021 01:00 Yingluo China  0.2
24 Jul 2021 21:30 Shih-shih China  0.2
24 Jul 2021 21:30 Yakou China  0.2
24 Jul 2021 21:30 Yongning China  0.2
24 Jul 2021 21:30 Shihu China  0.2
24 Jul 2021 21:30 Dongyuan China  0.2
24 Jul 2021 21:30 Hsiang-chih China  0.2
24 Jul 2021 21:30 Zhangban China  0.2
24 Jul 2021 22:30 Lianhe China  0.2
24 Jul 2021 22:30 Ch'ing-hsu Taiwan  0.2
24 Jul 2021 22:30 Shijing China  0.2
24 Jul 2021 22:30 Chin-men Tao Taiwan  0.2
24 Jul 2021 22:30 Yang-chai Taiwan  0.2
24 Jul 2021 22:30 Anhai China  0.2
24 Jul 2021 22:30 Tung-shih China  0.2
24 Jul 2021 22:30 Weitou China  0.2
24 Jul 2021 22:30 Chin-ching China  0.2
24 Jul 2021 20:15 Caotan China  0.2
24 Jul 2021 20:15 Longtousha China  0.2
24 Jul 2021 20:15 Yingzai China  0.2
24 Jul 2021 21:15 Sha-shan Taiwan  0.2
24 Jul 2021 21:15 Wang-kung Taiwan  0.2
24 Jul 2021 22:30 Chin-men Taiwan  0.2
24 Jul 2021 21:15 San-hsing Taiwan  0.1
24 Jul 2021 21:15 T'ai-hsi Taiwan  0.1
24 Jul 2021 21:30 Chi-pei Taiwan  0.1
22 Jul 2021 22:45 Ch'i-shui China  0.1
22 Jul 2021 22:45 Haikang China  0.1
24 Jul 2021 21:15 Chung-ch'i Taiwan  0.1
24 Jul 2021 21:30 Ch'ang-an Taiwan  0.1
23 Jul 2021 00:15 Gaode China  0.1
23 Jul 2021 00:15 Guchengling China  0.1
23 Jul 2021 00:00 Beihai China  0.1
24 Jul 2021 21:30 Chu-kao-wan Taiwan  0.1
24 Jul 2021 21:30 Ch'eng-ch'ien Taiwan  0.1
24 Jul 2021 21:30 Wai-an Taiwan  0.1
24 Jul 2021 21:30 Feng-kuei-li Taiwan  0.1
24 Jul 2021 21:30 P'eng-hu-erh-ts'un Taiwan  0.1
24 Jul 2021 21:30 Ma-kung Taiwan  0.1
24 Jul 2021 21:30 Lung-men Taiwan  0.1
24 Jul 2021 21:15 Sa-ti Taiwan  0.1
24 Jul 2021 21:15 Hai-kou Taiwan  0.1
22 Jul 2021 13:30 Huangge China  0.1
22 Jul 2021 13:30 Min-chung China  0.1
22 Jul 2021 13:30 Wan-ch'ing-sha China  0.1
22 Jul 2021 13:30 Jiang'ouwei China  0.1
22 Jul 2021 13:30 Cheng'anwei China  0.1
22 Jul 2021 13:30 Fumunchai China  0.1
22 Jul 2021 13:30 Fumuntschai China  0.1
22 Jul 2021 13:30 Baihao China  0.1
22 Jul 2021 13:30 Taiping China  0.1
22 Jul 2021 13:30 Sha-ching China  0.1
22 Jul 2021 13:30 Heping China  0.1
22 Jul 2021 22:45 Liu-sha-ying China  0.1
22 Jul 2021 23:15 Hsi-ch'ang-hsu China  0.1
22 Jul 2021 23:15 Hsi-ch'ang China  0.1
22 Jul 2021 23:15 Shagang China  0.1
22 Jul 2021 23:15 Dangjiang China  0.1
22 Jul 2021 23:15 Qianjiang China  0.1
24 Jul 2021 20:00 Hua-hsu Taiwan  0.1
23 Jul 2021 00:00 Guanjing China  0.1
24 Jul 2021 20:15 Chu-mu-shui Taiwan  0.1
24 Jul 2021 06:15 Hai Phong Vietnam  0.1
24 Jul 2021 06:15 Thuy U Vietnam  0.1
24 Jul 2021 06:15 Dai Loc Vietnam  0.1
24 Jul 2021 06:15 Quang Yen Vietnam  0.1
24 Jul 2021 06:15 Hoang Chau Vietnam  0.1
22 Jul 2021 22:30 Shuiwei China  0.1
24 Jul 2021 21:15 Hsia-lun Taiwan  0.1
22 Jul 2021 12:00 Nanping China  0.1
22 Jul 2021 12:00 Maogang China  0.1
22 Jul 2021 12:00 Macau Macau (China)  0.1
22 Jul 2021 12:00 Taipa Macau (China)  0.1
22 Jul 2021 12:00 Coloane Macau (China)  0.1
22 Jul 2021 12:00 Heung chau China  0.1
24 Jul 2021 23:30 Aotou China  0.1
24 Jul 2021 23:30 An-ting Taiwan  0.1
22 Jul 2021 23:45 Hsi-niu-chiao China  0.1
22 Jul 2021 23:45 Pingshan China  0.1
22 Jul 2021 12:45 Nantou China  0.1
24 Jul 2021 20:00 Chiang-chun-ao Taiwan  0.1
22 Jul 2021 22:30 Liusha China  0.1
22 Jul 2021 22:30 Mai-ch'en-hsu China  0.1
25 Jul 2021 00:45 Songyu China  0.1
25 Jul 2021 00:45 Hsing-lin China  0.1
25 Jul 2021 00:45 Xucuo China  0.1
25 Jul 2021 00:45 Gulangyu China  0.1
25 Jul 2021 00:45 Xiamen China  0.1
25 Jul 2021 00:45 Chen-hai China  0.1
25 Jul 2021 00:45 Daomei China  0.1
25 Jul 2021 00:45 Dianqian China  0.1
25 Jul 2021 00:45 Jiangtou China  0.1
25 Jul 2021 00:45 Zhenhai China  0.1
25 Jul 2021 00:45 Hecuo China  0.1
25 Jul 2021 00:45 Liuwudian China  0.1
22 Jul 2021 14:45 Dayang China  0.1
22 Jul 2021 14:45 Dalangwan China  0.1
22 Jul 2021 14:45 Guanghai China  0.1
22 Jul 2021 14:45 Tiantou China  0.1
22 Jul 2021 14:45 Tonggu China  0.1
24 Jul 2021 06:15 Gia Luan Vietnam  0.1
25 Jul 2021 01:30 Fugong China  0.1
25 Jul 2021 01:30 Haicang China  0.1
25 Jul 2021 01:30 Gangwei China  0.1
24 Jul 2021 21:00 Hsin-chiang Taiwan  0.1
24 Jul 2021 21:00 Wu-nan Taiwan  0.1
22 Jul 2021 17:30 Cuihengcun China  0.1
22 Jul 2021 17:30 Xiazha China  0.1
22 Jul 2021 17:30 Qishan China  0.1
22 Jul 2021 17:30 Ch'i-ao China  0.1
25 Jul 2021 02:00 Guankou China  0.1
22 Jul 2021 15:15 Chiu-chieh China  0.1
22 Jul 2021 15:15 Shekou China  0.1
22 Jul 2021 15:15 Castle Peak New Town Hong Kong (China)  0.1
22 Jul 2021 15:15 Tuen Mun Hong Kong (China)  0.1
24 Jul 2021 06:30 Ubon Bi Vietnam  0.1
24 Jul 2021 06:30 Dong Vang Vietnam  0.1
23 Jul 2021 00:00 Longmen China  0.1
23 Jul 2021 00:00 Dafanpo China  0.1
25 Jul 2021 00:45 Fotan China  0.1
22 Jul 2021 12:15 Houmen China  0.1
22 Jul 2021 12:15 Magong China  0.1
22 Jul 2021 12:15 Jizhongtuo China  0.1
22 Jul 2021 12:15 Shanwei China  0.1
22 Jul 2021 12:15 Jiesheng China  0.1
22 Jul 2021 12:00 Hsia-yung China  0.1
22 Jul 2021 12:00 Renshan China  0.1
22 Jul 2021 12:00 Jen-shan China  0.1
22 Jul 2021 12:00 Fanhe China  0.1
22 Jul 2021 12:00 Pinghai China  0.1
22 Jul 2021 13:30 Chixi China  0.1
22 Jul 2021 13:30 Mashan China  0.1
22 Jul 2021 13:30 Pingsha China  0.1
24 Jul 2021 19:45 Chung-p'ing Taiwan  0.1
22 Jul 2021 13:15 Baijiao China  0.1
22 Jul 2021 13:15 San-tsao China  0.1
23 Jul 2021 02:00 Paipu China  0.1
23 Jul 2021 02:00 Baimajing China  0.1
23 Jul 2021 02:00 Hsin-ying China  0.1
23 Jul 2021 02:00 Eman China  0.1
23 Jul 2021 02:00 Taan China  0.1
23 Jul 2021 02:00 Hsin-chou China  0.1
22 Jul 2021 13:45 Shalan China  0.1
22 Jul 2021 22:45 Maichen China  0.1
22 Jul 2021 23:45 Gongche China  0.1
22 Jul 2021 23:45 Ch'i-sha China  0.1
23 Jul 2021 03:30 Chia-ho-ts'un Taiwan  0.1
23 Jul 2021 03:30 Fang-shan Taiwan  0.1
23 Jul 2021 03:30 Feng-chiang Taiwan  0.1
23 Jul 2021 03:30 She-liao Taiwan  0.1
23 Jul 2021 03:30 Che-cheng Taiwan  0.1
25 Jul 2021 10:30 Xindian China  0.1
25 Jul 2021 10:30 Ma-chiang China  0.1
22 Jul 2021 14:30 Luewei China  0.1
22 Jul 2021 14:30 Shadi China  0.1
23 Jul 2021 14:30 Maobitou Taiwan  0.1
23 Jul 2021 14:30 Ta-kuang Taiwan  0.1
23 Jul 2021 03:00 T'ien-ch'ien-ts'o Taiwan  0.1
23 Jul 2021 03:00 Shui-ti-liao Taiwan  0.1