Overall Orange Tropical Cyclone alert for CEMPAKA-21 in China from 18 Jul 2021 18:00 UTC to 23 Jul 2021 12:00 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve alerts, information exchange and coordination in the first phase after major sudden-onset disasters.

Overall Orange alert Tropical Cyclone for CEMPAKA-21

in China

click on

to select bulletin time

Meteorological source:

GDACS JTWC

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	58 km/h
Maximum storm surge	0.5 m (25 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	0.5 m	147 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)

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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 18:00 UTC

Category	Country	Population
Tropical Storm	Taiwan	25,705

See TC classification SSHS

Wind Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

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
1	18 Jul 2021 18:00	72	-	-	-	-	-	-	-
2	19 Jul 2021 00:00	108	-	-	-	-	-	-	-
3	19 Jul 2021 06:00	94	-	-	-	-	-	-	-
4	19 Jul 2021 12:00	108	-		-	-	-	-	-	China
5	19 Jul 2021 18:00	112	-	-	-	-	-	-	-
6	20 Jul 2021 00:00	144	-		-	-	-	-	-	China
7	20 Jul 2021 06:00	126	-		-	-	-	-	-	China
8	20 Jul 2021 12:00	119	-		-	-	-	-	-	China
9	20 Jul 2021 18:00	65	-		-	-	-	-	-	China
10	21 Jul 2021 00:00	54	-	-	-	-	-	-	-
11	21 Jul 2021 06:00	58	-	-	-	-	-	-	-
12	21 Jul 2021 12:00	58	-	-	-	-	-	-	-
13	21 Jul 2021 18:00	54	-	-	-	-	-	-	-
14	22 Jul 2021 00:00	61	-		-	-	-	-	-	Taiwan
15	22 Jul 2021 06:00	61	-		-	-	-	-	-	Taiwan
16	22 Jul 2021 12:00	54	-	-	-	-	-	-	-
17	22 Jul 2021 18:00	61	-		-	-	-	-	-	Taiwan

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 22 Jul 2021 18:00 UTC

Level	Country	Population
250-500 mm	Laos, Thailand, Philippines	75,651	+
	Laos	92
	Philippines	41,930
	Thailand	33,628
100-250 mm	China, Vietnam, Laos, Thailand, Philippines	15,538,240	+
	China	657,637
	Vietnam	475,502
	Laos	2,377,787
	Philippines	7,505,481
	Thailand	4,521,831
50-100 mm	China, Vietnam, Taiwan, Laos, Philippines, Thailand, Cambodia	33,103,749	+
	China	6,159,960
	Vietnam	19,604,307
	Taiwan	5,523
	Laos	813,718
	Philippines	3,600,410
	Thailand	2,900,778
	Cambodia	19,050

Rain Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

N°	Date (UTC)	Max Rainfall (mm)	Pop >100mm or higher	50-100	100-250	250-500	500-750	750-1000	>1000	Countries
1	18 Jul 2021 18:00	142	80 thousand			-	-	-	-	Laos, Vietnam, Cambodia
2	19 Jul 2021 00:00	171	-		-	-	-	-	-	Laos, Cambodia
3	19 Jul 2021 06:00	157	-		-	-	-	-	-	Hong Kong, China
4	19 Jul 2021 12:00	126	-	-	-	-	-	-	-
5	19 Jul 2021 18:00	223	-		-	-	-	-	-	Laos, Vietnam
6	20 Jul 2021 00:00	221	Few people			-	-	-	-	China, Laos, Thailand
7	20 Jul 2021 06:00	274	170 thousand			-	-	-	-	China
8	20 Jul 2021 12:00	187	440 thousand			-	-	-	-	China
9	20 Jul 2021 18:00	151	790 thousand			-	-	-	-	China
10	21 Jul 2021 00:00	75	-		-	-	-	-	-	China
11	21 Jul 2021 06:00	66	-		-	-	-	-	-	China
12	21 Jul 2021 12:00	103	Few people			-	-	-	-	China, Laos, Thailand
13	21 Jul 2021 18:00	107	10 thousand			-	-	-	-	China, Laos, Thailand
14	22 Jul 2021 00:00	103	-		-	-	-	-	-	China
15	22 Jul 2021 06:00	39	-	-	-	-	-	-	-
16	22 Jul 2021 12:00	62	-		-	-	-	-	-	Philippines
17	22 Jul 2021 18:00	303	15.6 million				-	-	-	China, Vietnam, Taiwan, Laos, Philippines, Thailand, Cambodia

Impact estimation for the next 72h

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StormSurge

0.5 m

The maximum Storm surge height is 0.5m in Sha-fan-chieh, China. This height is estimated for 25 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)
	25 Jul 2021 18:00	Sha-fan-chieh	China	0.5
	25 Jul 2021 18:00	Jinxiang	China	0.5
	25 Jul 2021 17:45	Pucheng	China	0.5
	25 Jul 2021 17:45	Shacheng	China	0.5
	25 Jul 2021 17:45	Xiaguan	China	0.5
	25 Jul 2021 17:30	Huang-ch'i	China	0.5
	25 Jul 2021 18:00	Yacheng	China	0.4
	25 Jul 2021 18:00	Sansha	China	0.4
	25 Jul 2021 18:00	Changchun	China	0.4
	25 Jul 2021 18:00	Wuqu	China	0.4
	25 Jul 2021 18:00	Luxia	China	0.4
	25 Jul 2021 17:30	Xiahu	China	0.4
	25 Jul 2021 17:30	Da'ao	China	0.4
	25 Jul 2021 17:45	Tung-ch'ung	China	0.4
	25 Jul 2021 17:45	Xinan	China	0.4
	25 Jul 2021 18:00	Anhai	China	0.4
	25 Jul 2021 16:45	Bili	China	0.4
	25 Jul 2021 16:45	Chien-chiang	China	0.4
	25 Jul 2021 17:30	Ting-hai	China	0.4
	25 Jul 2021 17:45	Ch'ang-t'an-wo	Taiwan	0.4
	25 Jul 2021 18:00	Tung-tai	China	0.3
	25 Jul 2021 18:00	Baisheng	China	0.3
	25 Jul 2021 18:00	Mabi	China	0.3
	25 Jul 2021 18:00	Guanban	China	0.3
	25 Jul 2021 18:00	Langqi	China	0.3
	25 Jul 2021 18:00	Changmen	China	0.3
	25 Jul 2021 18:00	Fengwo	China	0.3
	25 Jul 2021 18:00	Yunlong	China	0.3
	25 Jul 2021 18:00	Tantou	China	0.3
	25 Jul 2021 18:00	Chin-feng	China	0.3
	25 Jul 2021 18:00	Wuhang	China	0.3
	25 Jul 2021 18:00	Chiang-t'ien	China	0.3
	25 Jul 2021 18:00	Chang-chiang	China	0.3
	25 Jul 2021 18:00	Guhuai	China	0.3
	25 Jul 2021 18:00	Guanjing	China	0.3
	25 Jul 2021 18:00	Qingfeng	China	0.3
	25 Jul 2021 18:00	Pingtan	China	0.3
	25 Jul 2021 18:00	Houtian	China	0.3
	25 Jul 2021 18:00	Beicuo	China	0.3
	22 Jul 2021 18:00	San Shah	China	0.3
	22 Jul 2021 18:00	Gaoshan	China	0.3
	22 Jul 2021 18:00	Ta-ch'iu	China	0.3
	22 Jul 2021 18:00	Cao Yu	China	0.3
	25 Jul 2021 18:00	Fuye	China	0.2
	25 Jul 2021 18:00	Nanri	China	0.2
	25 Jul 2021 18:00	Shicheng	China	0.2
	25 Jul 2021 18:00	Tangbian	China	0.2
	25 Jul 2021 18:00	Jiangjing	China	0.2
	25 Jul 2021 18:00	Gangtou	China	0.2
	25 Jul 2021 18:00	Pinghai	China	0.2
	25 Jul 2021 18:00	Yuxi	China	0.2
	25 Jul 2021 18:00	Longtian	China	0.2
	25 Jul 2021 18:00	Chiang-k'ou	China	0.2
	25 Jul 2021 18:00	Daitou	China	0.2
	25 Jul 2021 17:45	Ch'i-ting	Taiwan	0.2
	25 Jul 2021 15:15	Wangchuan	China	0.2
	25 Jul 2021 15:15	Fengting	China	0.2
	25 Jul 2021 15:15	Dawu	China	0.2
	25 Jul 2021 15:15	Fengwei	China	0.2
	25 Jul 2021 15:15	Hsiao-tso	China	0.2
	25 Jul 2021 15:15	Zhongmen	China	0.2
	25 Jul 2021 18:00	Hushi	China	0.2
	25 Jul 2021 18:00	P'u-hsi	China	0.2
	25 Jul 2021 18:00	P'u-hsi-ch'eng	China	0.2
	25 Jul 2021 18:00	Meizhou	China	0.2
	25 Jul 2021 17:45	Tung-hsiao	Taiwan	0.2
	25 Jul 2021 17:30	Hai huang	Taiwan	0.2
	25 Jul 2021 17:30	Yuan-li	Taiwan	0.2
	25 Jul 2021 16:00	Dongsha	China	0.2
	25 Jul 2021 16:00	Lingchuan	China	0.2
	25 Jul 2021 17:30	Ching-shui	Taiwan	0.2
	25 Jul 2021 17:30	Qian'an	China	0.2
	25 Jul 2021 17:30	Chongwu	China	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
	25 Jul 2021 18:00	Hsiang-chih	China	0.2
	25 Jul 2021 18:00	Zhangban	China	0.2
	25 Jul 2021 18:00	Shihu	China	0.2
	25 Jul 2021 18:00	Dongyuan	China	0.2
	25 Jul 2021 18:00	Shih-shih	China	0.2
	25 Jul 2021 18:00	Yakou	China	0.2
	25 Jul 2021 18:00	Yongning	China	0.2
	25 Jul 2021 18:00	Lu-kang	Taiwan	0.2
	22 Jul 2021 23:30	Caotan	China	0.2
	25 Jul 2021 18:00	Weitou	China	0.2
	25 Jul 2021 18:00	Chin-ching	China	0.2
	25 Jul 2021 18:00	Sha-shan	Taiwan	0.2
	25 Jul 2021 18:00	Wang-kung	Taiwan	0.2
	22 Jul 2021 23:15	Longtousha	China	0.2
	24 Jul 2021 13:15	Yingzai	China	0.1
	25 Jul 2021 18:00	San-hsing	Taiwan	0.1
	25 Jul 2021 18:00	T'ai-hsi	Taiwan	0.1
	25 Jul 2021 18:00	Chin-men Tao	Taiwan	0.1
	25 Jul 2021 18:00	Yang-chai	Taiwan	0.1
	22 Jul 2021 22:45	Ch'i-shui	China	0.1
	22 Jul 2021 22:45	Haikang	China	0.1
	25 Jul 2021 16:15	Chung-ch'i	Taiwan	0.1
	23 Jul 2021 00:15	Gaode	China	0.1
	23 Jul 2021 00:15	Guchengling	China	0.1
	25 Jul 2021 18:00	Ch'ing-hsu	Taiwan	0.1
	25 Jul 2021 18:00	Shijing	China	0.1
	24 Jul 2021 22:45	Lianhe	China	0.1
	24 Jul 2021 22:45	Anhai	China	0.1
	24 Jul 2021 22:45	Tung-shih	China	0.1
	25 Jul 2021 18:00	Sa-ti	Taiwan	0.1
	25 Jul 2021 18:00	Hai-kou	Taiwan	0.1
	25 Jul 2021 18:00	Chi-pei	Taiwan	0.1
	23 Jul 2021 00:00	Beihai	China	0.1
	25 Jul 2021 18:00	Ch'ang-an	Taiwan	0.1
	25 Jul 2021 17:45	Wai-an	Taiwan	0.1
	25 Jul 2021 17:45	Chu-kao-wan	Taiwan	0.1
	25 Jul 2021 17:45	Feng-kuei-li	Taiwan	0.1
	25 Jul 2021 17:45	P'eng-hu-erh-ts'un	Taiwan	0.1
	25 Jul 2021 17:45	Ma-kung	Taiwan	0.1
	25 Jul 2021 17:45	Ch'eng-ch'ien	Taiwan	0.1
	25 Jul 2021 17:45	Lung-men	Taiwan	0.1
	24 Jul 2021 22:45	Chin-men	Taiwan	0.1
	22 Jul 2021 22:45	Liu-sha-ying	China	0.1
	24 Jul 2021 12:00	Yuen Long	Hong Kong (China)	0.1
	24 Jul 2021 12:00	Tai Po	Hong Kong (China)	0.1
	24 Jul 2021 12:00	Tai Po Industrial Estate	Hong Kong (China)	0.1
	24 Jul 2021 12:00	Fung Yuen	Hong Kong (China)	0.1
	24 Jul 2021 12:00	Dabu	Hong Kong (China)	0.1
	24 Jul 2021 12:00	Sha Tau Kok	China	0.1
	24 Jul 2021 12:00	Cheung Kang	Hong Kong (China)	0.1
	24 Jul 2021 12:00	Imtin	China	0.1
	24 Jul 2021 12:00	Cheung Wo	Hong Kong (China)	0.1
	24 Jul 2021 12:00	Pak Sha Au	Hong Kong (China)	0.1
	24 Jul 2021 12:00	Long Ke	Hong Kong (China)	0.1
	24 Jul 2021 12:00	Khitschhung	China	0.1
	25 Jul 2021 18:00	An-ting	Taiwan	0.1
	25 Jul 2021 18:00	Aotou	China	0.1
	25 Jul 2021 18:00	Hsia-lun	Taiwan	0.1
	25 Jul 2021 18:00	Songyu	China	0.1
	25 Jul 2021 18:00	Xucuo	China	0.1
	25 Jul 2021 18:00	Gulangyu	China	0.1
	25 Jul 2021 18:00	Xiamen	China	0.1
	25 Jul 2021 18:00	Chen-hai	China	0.1
	25 Jul 2021 18:00	Daomei	China	0.1
	25 Jul 2021 18:00	Jiangtou	China	0.1
	25 Jul 2021 18:00	Zhenhai	China	0.1
	25 Jul 2021 18:00	Hecuo	China	0.1
	24 Jul 2021 12:00	Cheung Sha Wan	Hong Kong (China)	0.1
	24 Jul 2021 12:00	Tsz Wa Chan	Hong Kong (China)	0.1
	24 Jul 2021 12:00	Yau Ma Po	Hong Kong (China)	0.1
	24 Jul 2021 12:00	Sai Kung	Hong Kong (China)	0.1
	25 Jul 2021 18:00	Chu-mu-shui	Taiwan	0.1
	25 Jul 2021 18:00	Hua-hsu	Taiwan	0.1
	25 Jul 2021 18:00	Hsing-lin	China	0.1
	25 Jul 2021 18:00	Dianqian	China	0.1
	25 Jul 2021 18:00	Liuwudian	China	0.1
	25 Jul 2021 15:45	Hsin-chiang	Taiwan	0.1
	25 Jul 2021 15:45	Wu-nan	Taiwan	0.1
	22 Jul 2021 22:45	Shuiwei	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
	25 Jul 2021 17:45	Chiang-chun-ao	Taiwan	0.1
	24 Jul 2021 06:45	Hai Phong	Vietnam	0.1
	24 Jul 2021 06:45	Thuy U	Vietnam	0.1
	24 Jul 2021 06:45	Dai Loc	Vietnam	0.1
	24 Jul 2021 06:45	Quang Yen	Vietnam	0.1
	24 Jul 2021 06:45	Hoang Chau	Vietnam	0.1
	22 Jul 2021 22:30	Liusha	China	0.1
	22 Jul 2021 22:30	Mai-ch'en-hsu	China	0.1
	22 Jul 2021 23:15	Guanjing	China	0.1
	23 Jul 2021 02:30	Paipu	China	0.1
	23 Jul 2021 02:30	Baimajing	China	0.1
	23 Jul 2021 02:30	Hsin-ying	China	0.1
	23 Jul 2021 02:30	Eman	China	0.1
	23 Jul 2021 02:30	Taan	China	0.1
	23 Jul 2021 02:30	Hsin-chou	China	0.1
	25 Jul 2021 12:00	Xindian	China	0.1
	25 Jul 2021 12:00	Ma-chiang	China	0.1
	24 Jul 2021 07:00	Gia Luan	Vietnam	0.1
	22 Jul 2021 18:00	Cuihengcun	China	0.1
	22 Jul 2021 18:00	Min-chung	China	0.1
	22 Jul 2021 18:00	Xiazha	China	0.1
	22 Jul 2021 18:00	Qishan	China	0.1
	22 Jul 2021 18:00	Cheng'anwei	China	0.1
	22 Jul 2021 18:00	Ch'i-ao	China	0.1
	25 Jul 2021 17:45	Chung-p'ing	Taiwan	0.1
	24 Jul 2021 07:15	Ubon Bi	Vietnam	0.1
	24 Jul 2021 07:15	Dong Vang	Vietnam	0.1
	22 Jul 2021 23:45	Hsi-niu-chiao	China	0.1
	22 Jul 2021 23:45	Pingshan	China	0.1
	25 Jul 2021 02:30	Fugong	China	0.1
	25 Jul 2021 02:30	Haicang	China	0.1
	25 Jul 2021 02:30	Gangwei	China	0.1
	22 Jul 2021 22:45	Maichen	China	0.1
	25 Jul 2021 18:00	Fotan	China	0.1
	25 Jul 2021 18:00	Chang-t'an	Taiwan	0.1
	22 Jul 2021 18:00	Huangge	China	0.1
	22 Jul 2021 18:00	Wan-ch'ing-sha	China	0.1
	22 Jul 2021 18:00	Jiang'ouwei	China	0.1
	22 Jul 2021 18:00	Fumunchai	China	0.1
	22 Jul 2021 18:00	Fumuntschai	China	0.1
	22 Jul 2021 18:00	Baihao	China	0.1
	22 Jul 2021 18:00	Taiping	China	0.1
	22 Jul 2021 18:00	Sha-ching	China	0.1
	22 Jul 2021 18:00	Heping	China	0.1
	24 Jul 2021 07:45	Mong Cai	Vietnam	0.1
	24 Jul 2021 07:45	Jiangpingxu	China	0.1
	24 Jul 2021 07:45	Jiangping	China	0.1
	24 Jul 2021 07:45	Wanwei	China	0.1
	25 Jul 2021 18:00	Fu-hsing	Taiwan	0.1
	25 Jul 2021 18:00	Pu-tai	Taiwan	0.1
	22 Jul 2021 18:00	Nantou	China	0.1
	22 Jul 2021 19:30	Chiu-chieh	China	0.1
	22 Jul 2021 19:30	Shekou	China	0.1
	22 Jul 2021 19:30	Castle Peak New Town	Hong Kong (China)	0.1
	22 Jul 2021 19:30	Tuen Mun	Hong Kong (China)	0.1
	25 Jul 2021 02:45	Guankou	China	0.1
	25 Jul 2021 15:30	Yung-lung	Taiwan	0.1

Disclaimer
While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information.
The JRC is not responsible for any damage or loss resulting from the use of the information presented on this website.
The designations employed and the presentation of material on the map do not imply the expression of any opinion whatsoever on the part of the European Union concerning the legal status of any country, territory or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.