Overall Orange alert Tropical Cyclone for CEMPAKA-21
in China
22 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 Vietnam, Laos
Exposed population No people in Category 1 or higher
Maximum wind speed 65 km/h
Maximum storm surge 0.4 m (22 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
HWRF Current 65 km/h 0.4 m 166 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)

TOP

Wind

137 km/h

Up to 210 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 18:00 UTC
CategoryCountryPopulation 
Tropical StormVietnam, Laos208,387
+
Vietnam208,274 
Laos112 

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 18:00 122 -
- - - - - China
GREEN 6 20 Jul 2021 00:00 130 -
- - - - - China
GREEN 7 20 Jul 2021 06:00 137 Few people
- - - - China
GREEN 8 20 Jul 2021 12:00 137 40 thousand
- - - - China
GREEN 9 20 Jul 2021 18:00 104 -
- - - - - China
GREEN 10 21 Jul 2021 00:00 61 -
- - - - - China
GREEN 11 21 Jul 2021 06:00 43 - - - - - - -
GREEN 12 21 Jul 2021 12:00 47 - - - - - - -
GREEN 13 21 Jul 2021 18:00 58 - - - - - - -
GREEN 14 22 Jul 2021 00:00 61 - - - - - - -
GREEN 15 22 Jul 2021 06:00 58 - - - - - - -
GREEN 16 22 Jul 2021 12:00 58 - - - - - - -
GREEN 17 22 Jul 2021 18:00 104 -
- - - - - Vietnam, Laos
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 22 Jul 2021 18:00 UTC
LevelCountryPopulation 
500-750 mmLaos304 
250-500 mmVietnam, China, Laos172,168
+
China12,928 
Vietnam103,239 
Laos56,001 
100-250 mmChina, Laos, Vietnam3,942,840
+
China1,117,438 
Vietnam2,281,407 
Laos543,994 
50-100 mmChina, Vietnam, Laos, Thailand, Cambodia10,125,675
+
China2,553,948 
Vietnam6,209,585 
Laos1,082,993 
Thailand278,744 
Cambodia402 

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 18:00 277 5 thousand
- - - - China
Blue 6 20 Jul 2021 00:00 290 550 thousand
- - - - China, Macao
Blue 7 20 Jul 2021 06:00 272 Few people
- - - - China, Hong Kong
Blue 8 20 Jul 2021 12:00 189 440 thousand
- - - - China
Blue 9 20 Jul 2021 18:00 228 630 thousand
- - - - China
Blue 10 21 Jul 2021 00:00 328 170 thousand
- - - - China, Vietnam
Blue 11 21 Jul 2021 06:00 111 3 thousand
- - - - China
Blue 12 21 Jul 2021 12:00 86 -
- - - - - China
Blue 13 21 Jul 2021 18:00 175 230 thousand
- - - - China
Blue 14 22 Jul 2021 00:00 285 9 thousand
- - - - China
Blue 15 22 Jul 2021 06:00 146 2 thousand
- - - - China, Vietnam
Blue 16 22 Jul 2021 12:00 139 3 thousand
- - - - Vietnam, China
Blue 17 22 Jul 2021 18:00 1002 4.1 million
- - China, Vietnam, Laos, Thailand, Cambodia




Impact estimation for the next 72h
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StormSurge

0.4 m

The maximum Storm surge height is  0.4m in San Shah, China. This height is estimated for 22 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 population - AoIs


Storm Surge Exposed locations

Calculation based on the bulletin of 22 Jul 2021 18:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
22 Jul 2021 18:00 San Shah China  0.4
22 Jul 2021 18:00 Gaoshan China  0.4
22 Jul 2021 18:00 Ta-ch'iu China  0.4
22 Jul 2021 18:00 Beicuo China  0.4
22 Jul 2021 18:00 Guanjing China  0.4
22 Jul 2021 18:00 Cao Yu China  0.4
22 Jul 2021 18:00 Qingfeng China  0.4
22 Jul 2021 18:00 Pingtan China  0.4
22 Jul 2021 18:00 Houtian China  0.3
25 Jul 2021 11:15 Sha-fan-chieh China  0.2
25 Jul 2021 11:15 Jinxiang China  0.2
25 Jul 2021 11:15 Pucheng China  0.2
24 Jul 2021 11:45 Bailong China  0.2
24 Jul 2021 11:45 Beimu China  0.2
24 Jul 2021 11:45 Yong'an China  0.2
24 Jul 2021 11:45 Shankou China  0.2
24 Jul 2021 11:45 Yingluo China  0.2
25 Jul 2021 11:45 Shacheng China  0.2
25 Jul 2021 11:45 Xiaguan China  0.2
25 Jul 2021 11:45 Huang-ch'i China  0.2
24 Jul 2021 10:30 Caotan China  0.2
25 Jul 2021 12:30 Xiahu China  0.2
25 Jul 2021 12:30 Da'ao China  0.2
25 Jul 2021 12:30 Changchun China  0.2
25 Jul 2021 12:30 Luxia China  0.2
25 Jul 2021 11:15 Yacheng China  0.2
25 Jul 2021 11:15 Sansha China  0.2
24 Jul 2021 10:30 Longtousha China  0.2
25 Jul 2021 11:15 Wuqu China  0.2
25 Jul 2021 12:15 Anhai China  0.2
25 Jul 2021 12:15 Tung-ch'ung China  0.2
25 Jul 2021 12:15 Xinan China  0.2
25 Jul 2021 12:00 Ting-hai China  0.2
25 Jul 2021 12:00 Bili China  0.2
25 Jul 2021 12:00 Chien-chiang China  0.2
23 Jul 2021 06:30 Paipu China  0.2
23 Jul 2021 06:30 Baimajing China  0.2
23 Jul 2021 06:30 Hsin-ying China  0.2
23 Jul 2021 06:30 Eman China  0.2
23 Jul 2021 06:30 Taan China  0.2
23 Jul 2021 06:30 Hsin-chou China  0.2
25 Jul 2021 07:15 Wangchuan China  0.2
25 Jul 2021 07:15 Fengting China  0.2
25 Jul 2021 07:15 Dawu China  0.2
25 Jul 2021 07:15 Fengwei China  0.2
25 Jul 2021 07:15 Hsiao-tso China  0.2
25 Jul 2021 07:15 Zhongmen China  0.2
25 Jul 2021 12:30 Ch'ang-t'an-wo Taiwan  0.2
25 Jul 2021 12:30 Tung-tai China  0.2
25 Jul 2021 12:30 Baisheng China  0.2
25 Jul 2021 12:30 Mabi China  0.2
25 Jul 2021 12:30 Guanban China  0.2
25 Jul 2021 12:45 Langqi China  0.2
25 Jul 2021 12:45 Changmen China  0.2
25 Jul 2021 12:45 Fengwo China  0.2
25 Jul 2021 12:45 Yunlong China  0.2
25 Jul 2021 12:45 Tantou China  0.2
25 Jul 2021 07:45 P'u-hsi China  0.1
25 Jul 2021 07:45 P'u-hsi-ch'eng China  0.1
25 Jul 2021 07:45 Meizhou China  0.1
22 Jul 2021 21:45 Mong Cai Vietnam  0.1
22 Jul 2021 21:45 Jiangpingxu China  0.1
22 Jul 2021 21:45 Jiangping China  0.1
22 Jul 2021 21:45 Wanwei China  0.1
25 Jul 2021 12:30 Chin-feng China  0.1
25 Jul 2021 12:30 Wuhang China  0.1
25 Jul 2021 02:45 Taiping China  0.1
25 Jul 2021 02:45 Xianmai China  0.1
25 Jul 2021 02:45 Longshe China  0.1
25 Jul 2021 02:45 Dongli China  0.1
23 Jul 2021 07:00 Yingzai China  0.1
25 Jul 2021 07:15 Dongsha China  0.1
25 Jul 2021 07:15 Lingchuan China  0.1
25 Jul 2021 07:15 Hushi China  0.1
25 Jul 2021 02:45 Tung-li China  0.1
25 Jul 2021 02:45 Dongshan China  0.1
23 Jul 2021 02:30 Ch'i-shui China  0.1
23 Jul 2021 02:30 Haikang China  0.1
25 Jul 2021 07:45 Shicheng China  0.1
25 Jul 2021 07:45 Nanri China  0.1
25 Jul 2021 07:45 Fuye China  0.1
25 Jul 2021 08:00 Yuxi China  0.1
25 Jul 2021 08:00 Tangbian China  0.1
25 Jul 2021 08:00 Jiangjing China  0.1
25 Jul 2021 08:00 Longtian China  0.1
25 Jul 2021 08:00 Gangtou China  0.1
24 Jul 2021 10:15 Gaode China  0.1
24 Jul 2021 10:15 Guchengling China  0.1
25 Jul 2021 12:15 Chiang-t'ien China  0.1
25 Jul 2021 12:15 Chang-chiang China  0.1
22 Jul 2021 21:45 Bailong China  0.1
22 Jul 2021 21:45 Jiangshan China  0.1
24 Jul 2021 10:15 Hsi-ch'ang-hsu China  0.1
24 Jul 2021 10:15 Hsi-ch'ang China  0.1
24 Jul 2021 10:15 Shagang China  0.1
24 Jul 2021 10:15 Beihai China  0.1
24 Jul 2021 10:15 Dangjiang China  0.1
24 Jul 2021 10:15 Qianjiang China  0.1
25 Jul 2021 08:00 Chiang-k'ou China  0.1
25 Jul 2021 08:00 Daitou China  0.1
25 Jul 2021 08:00 Pinghai China  0.1
25 Jul 2021 07:15 Guhuai China  0.1
25 Jul 2021 09:15 Fugong China  0.1
25 Jul 2021 09:15 Haicang China  0.1
25 Jul 2021 09:15 Gangwei China  0.1
25 Jul 2021 09:15 Songyu China  0.1
25 Jul 2021 09:15 Hsing-lin China  0.1
25 Jul 2021 09:15 Xucuo China  0.1
25 Jul 2021 09:15 Gulangyu China  0.1
25 Jul 2021 09:15 Xiamen China  0.1
25 Jul 2021 09:15 Chen-hai China  0.1
25 Jul 2021 09:15 Daomei China  0.1
25 Jul 2021 09:15 Dianqian China  0.1
25 Jul 2021 09:15 Jiangtou China  0.1
25 Jul 2021 09:15 Zhenhai China  0.1
25 Jul 2021 09:15 Hecuo China  0.1
25 Jul 2021 09:15 Liuwudian China  0.1
25 Jul 2021 07:30 Qian'an China  0.1
25 Jul 2021 07:30 Chongwu China  0.1
25 Jul 2021 08:45 Guankou China  0.1
25 Jul 2021 06:45 Shih-shih China  0.1
25 Jul 2021 06:45 Yakou China  0.1
25 Jul 2021 06:45 Yongning China  0.1
25 Jul 2021 06:45 Shihu China  0.1
25 Jul 2021 06:45 Dongyuan China  0.1
25 Jul 2021 06:45 Hsiang-chih China  0.1
25 Jul 2021 06:45 Zhangban China  0.1
24 Jul 2021 10:15 Guanjing China  0.1
22 Jul 2021 18:15 Huangge China  0.1
22 Jul 2021 18:15 Min-chung China  0.1
22 Jul 2021 18:15 Wan-ch'ing-sha China  0.1
22 Jul 2021 18:15 Jiang'ouwei China  0.1
22 Jul 2021 18:15 Cheng'anwei China  0.1
22 Jul 2021 18:15 Fumunchai China  0.1
22 Jul 2021 18:15 Fumuntschai China  0.1
22 Jul 2021 18:15 Baihao China  0.1
22 Jul 2021 18:15 Taiping China  0.1
22 Jul 2021 18:15 Sha-ching China  0.1
22 Jul 2021 18:15 Heping China  0.1
25 Jul 2021 07:00 Chin-men Taiwan  0.1
25 Jul 2021 07:00 Lianhe China  0.1
25 Jul 2021 07:00 Ch'ing-hsu Taiwan  0.1
25 Jul 2021 07:00 Shijing China  0.1
25 Jul 2021 07:00 Chin-men Tao Taiwan  0.1
25 Jul 2021 07:00 Yang-chai Taiwan  0.1
25 Jul 2021 07:00 Tung-shih China  0.1
25 Jul 2021 07:00 Weitou China  0.1
25 Jul 2021 07:00 Chin-ching China  0.1
25 Jul 2021 07:00 Anhai China  0.1
24 Jul 2021 10:15 Hsi-niu-chiao China  0.1
24 Jul 2021 10:15 Pingshan China  0.1
22 Jul 2021 22:00 Xiuying China  0.1
22 Jul 2021 22:00 Haikou China  0.1
24 Jul 2021 09:15 Longmen China  0.1
24 Jul 2021 09:15 Dafanpo China  0.1
22 Jul 2021 18:00 Nantou China  0.1
22 Jul 2021 18:00 Chiu-chieh China  0.1
22 Jul 2021 18:00 Shekou China  0.1
22 Jul 2021 18:00 Castle Peak New Town Hong Kong (China)  0.1
22 Jul 2021 18:00 Tuen Mun Hong Kong (China)  0.1
22 Jul 2021 22:30 Puqian China  0.1
25 Jul 2021 07:15 Ch'i-ting Taiwan  0.1
23 Jul 2021 02:30 Liu-sha-ying China  0.1
25 Jul 2021 07:15 Tung-hsiao Taiwan  0.1
25 Jul 2021 07:15 Aotou China  0.1
25 Jul 2021 07:15 An-ting Taiwan  0.1
23 Jul 2021 03:45 Qiaotou China  0.1
25 Jul 2021 07:15 Hai huang Taiwan  0.1
25 Jul 2021 07:15 Yuan-li Taiwan  0.1
22 Jul 2021 22:15 Shuiwei China  0.1
22 Jul 2021 22:15 Mai-ch'en-hsu China  0.1
22 Jul 2021 22:15 Maichen China  0.1
25 Jul 2021 07:45 Ching-shui Taiwan  0.1
22 Jul 2021 18:00 Ch'i-ao China  0.1
25 Jul 2021 07:30 Lu-kang Taiwan  0.1
25 Jul 2021 02:30 Dongjian China  0.1
25 Jul 2021 02:30 Houhu China  0.1
25 Jul 2021 02:30 Bengtang China  0.1
25 Jul 2021 02:30 Houhai China  0.1
22 Jul 2021 22:00 Dong Cay Vietnam  0.1
22 Jul 2021 22:00 Dang Noi Vietnam  0.1
22 Jul 2021 22:00 Dam Ha Vietnam  0.1
23 Jul 2021 02:00 Guangcun China  0.1
23 Jul 2021 02:00 Xinxing China  0.1
22 Jul 2021 22:15 Haian China  0.1
22 Jul 2021 22:15 Boshegang China  0.1
22 Jul 2021 20:30 Cuihengcun China  0.1
22 Jul 2021 20:30 Xiazha China  0.1
22 Jul 2021 20:30 Qishan China  0.1
22 Jul 2021 22:00 Cai Kien Vietnam  0.1
22 Jul 2021 22:00 Cot Doai Vietnam  0.1
22 Jul 2021 22:00 Vinh Thuc Vietnam  0.1
25 Jul 2021 07:30 Fotan China  0.1
22 Jul 2021 22:00 Liusha China  0.1
24 Jul 2021 10:00 Gongche China  0.1
24 Jul 2021 10:00 Ch'i-sha China  0.1
22 Jul 2021 22:15 Longtang China  0.1
22 Jul 2021 22:15 Baishawan China  0.1
25 Jul 2021 08:00 Chihu China  0.1
24 Jul 2021 09:45 Fangcheng China  0.1
25 Jul 2021 08:00 Sha-shan Taiwan  0.1
25 Jul 2021 08:00 Wang-kung Taiwan  0.1
23 Jul 2021 01:45 Basuo China  0.1
23 Jul 2021 01:45 Beili China  0.1
23 Jul 2021 01:45 Duntou China  0.1
23 Jul 2021 01:45 Changhua China  0.1