Overall Green Tropical Cyclone alert for SONCA-17 in Viet Nam, Laos, Thailand from 21 Jul 2017 00:00 UTC to 25 Jul 2017 06:00 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 Green alert Tropical Cyclone for SONCA-17

in Viet Nam, Laos, Thailand

21 Jul 2017 12 UTC

click on

to select bulletin time

Meteorological source:

GDACS JTWC

Impact Single TC

GFS
HWRF
ECMWF

Impact based on all weather systems in the area

Impact

Tropical Cyclone SONCA-17 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source	HWRF
Exposed countries
Exposed population	No people in Category 1 or higher
Maximum wind speed	72 km/h
Maximum storm surge	0.2 m (22 Jul 10:15 UTC)
Vulnerability	High (Vietnam)

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	72 km/h	0.2 m	n.a.	0.5
HWRF Overall	95 km/h	0.5 m	n.a.	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

95 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 21 Jul 2017 12:00 UTC

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
	1	21 Jul 2017 06:00	69	-	-	-	-	-	-	-
	2	21 Jul 2017 12:00	72	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

No exposed population (greater than 50mm) based on the bulletin of 21 Jul 2017 12:00 UTC

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
	1	21 Jul 2017 06:00	-	-	-	-	-	-	-	-
	2	21 Jul 2017 12:00	-	-	-	-	-	-	-	-

Impact estimation for the next 72h

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StormSurge

0.2 m

The maximum Storm surge height is 0.2m in Dongshan, China. This height is estimated for 22 Jul 2017 10:15 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 21 Jul 2017 12:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	22 Jul 2017 10:15	Dongshan	China	0.2
	22 Jul 2017 10:15	Zhanjiang	China	0.2
	22 Jul 2017 10:15	Ma-hsieh	China	0.2
	22 Jul 2017 10:15	Dongjian	China	0.2
	22 Jul 2017 10:15	Badongxu	China	0.2
	22 Jul 2017 10:15	Houhu	China	0.2
	22 Jul 2017 10:15	Bengtang	China	0.2
	22 Jul 2017 10:15	Houhai	China	0.2
	22 Jul 2017 10:15	Baisha	China	0.2
	22 Jul 2017 10:15	Shaoyao	China	0.2
	22 Jul 2017 10:15	Xingyou	China	0.2
	22 Jul 2017 10:15	Huangwu	China	0.2
	22 Jul 2017 10:15	Doulongcun	China	0.2
	22 Jul 2017 04:45	Taiping	China	0.2
	22 Jul 2017 04:45	Xianmai	China	0.2
	22 Jul 2017 04:45	Longshe	China	0.2
	22 Jul 2017 04:45	Dongli	China	0.2
	22 Jul 2017 07:30	Guanchang	China	0.2
	22 Jul 2017 07:30	Tung-li	China	0.2
	22 Jul 2017 07:30	Jinhe	China	0.2
	22 Jul 2017 07:30	Wai-lo	China	0.2
	22 Jul 2017 07:30	Nayan	China	0.2
	22 Jul 2017 01:15	Duya	Myanmar	0.2
	22 Jul 2017 01:15	Khawsa	Myanmar	0.2
	22 Jul 2017 06:45	Chiu-wu-ch'uan	China	0.2
	22 Jul 2017 06:45	Meilu	China	0.2
	22 Jul 2017 06:45	Hai-lu	China	0.2
	22 Jul 2017 06:00	Taipang	China	0.2
	22 Jul 2017 06:00	Shagang	China	0.2
	22 Jul 2017 06:00	Aotou	China	0.2
	22 Jul 2017 06:00	Luzui	China	0.2
	22 Jul 2017 06:00	Hsia-yung	China	0.2
	22 Jul 2017 06:00	Renshan	China	0.2
	21 Jul 2017 21:30	Yingluo	China	0.2
	21 Jul 2017 21:30	Caotan	China	0.2
	21 Jul 2017 21:30	Longtousha	China	0.2
	21 Jul 2017 21:30	Yingzai	China	0.2
	21 Jul 2017 21:30	Yong'an	China	0.1
	21 Jul 2017 21:30	Shankou	China	0.1
	21 Jul 2017 20:45	Gaode	China	0.1
	21 Jul 2017 20:45	Guchengling	China	0.1
	21 Jul 2017 20:45	Bailong	China	0.1
	22 Jul 2017 06:00	Shuidong	China	0.1
	22 Jul 2017 06:00	Dianbai	China	0.1
	22 Jul 2017 03:45	Cat Son Phuong	Vietnam	0.1
	22 Jul 2017 03:45	Mui Lay	Vietnam	0.1
	22 Jul 2017 03:45	Giem Ha Trung	Vietnam	0.1
	22 Jul 2017 03:45	Dong Ha	Vietnam	0.1
	21 Jul 2017 22:00	Beimu	China	0.1
	21 Jul 2017 21:30	Thai Duong Thuong	Vietnam	0.1
	21 Jul 2017 21:30	Thon Thai Duong Ha	Vietnam	0.1
	21 Jul 2017 21:30	Thon My Khanh	Vietnam	0.1
	21 Jul 2017 17:45	Hsi-niu-chiao	China	0.1
	21 Jul 2017 17:45	Pingshan	China	0.1
	21 Jul 2017 17:45	Guanjing	China	0.1
	21 Jul 2017 17:45	Hsi-ch'ang-hsu	China	0.1
	21 Jul 2017 17:45	Hsi-ch'ang	China	0.1
	21 Jul 2017 20:00	Bailong	China	0.1
	21 Jul 2017 20:00	Jiangshan	China	0.1
	21 Jul 2017 20:00	Baishawan	China	0.1
	21 Jul 2017 20:00	Fangcheng	China	0.1
	21 Jul 2017 20:00	Gongche	China	0.1
	21 Jul 2017 20:00	Ch'i-sha	China	0.1
	21 Jul 2017 20:00	Longmen	China	0.1
	21 Jul 2017 20:30	Jiangpingxu	China	0.1
	21 Jul 2017 20:30	Jiangping	China	0.1
	21 Jul 2017 20:30	Wanwei	China	0.1
	22 Jul 2017 05:45	Diancheng	China	0.1
	22 Jul 2017 06:45	Magang	China	0.1
	21 Jul 2017 16:00	Tho Ngoa	Vietnam	0.1
	21 Jul 2017 16:00	Ly Nhon Thon	Vietnam	0.1
	21 Jul 2017 16:00	Dong Hoi	Vietnam	0.1
	21 Jul 2017 16:00	Ninh Hoa	Vietnam	0.1
	21 Jul 2017 16:00	Van Ninh	Vietnam	0.1
	21 Jul 2017 16:00	Dong Hai	Vietnam	0.1
	21 Jul 2017 16:00	Ninh Phuoc	Vietnam	0.1
	21 Jul 2017 16:00	Bai Tre	Vietnam	0.1
	21 Jul 2017 13:00	Mashan	China	0.1
	21 Jul 2017 13:00	Pingsha	China	0.1
	21 Jul 2017 13:00	Xiaolin	China	0.1
	21 Jul 2017 13:00	San-tsao	China	0.1
	21 Jul 2017 23:00	Luc Linh	Vietnam	0.1
	21 Jul 2017 23:00	Cuu Doi	Vietnam	0.1
	21 Jul 2017 23:00	An Co	Vietnam	0.1
	21 Jul 2017 23:00	Dai Loc	Vietnam	0.1
	22 Jul 2017 05:45	Baipu	China	0.1
	21 Jul 2017 19:00	Qiandong	China	0.1
	21 Jul 2017 19:00	Jingzhou	China	0.1
	21 Jul 2017 19:00	Huanglong	China	0.1
	21 Jul 2017 19:00	Huanggang	China	0.1
	21 Jul 2017 19:00	Raoping	China	0.1
	21 Jul 2017 19:00	Zhelin	China	0.1
	21 Jul 2017 19:00	Chelim	China	0.1
	21 Jul 2017 19:00	Gongkou	China	0.1
	21 Jul 2017 12:00	Kiem Long	Vietnam	0.1
	21 Jul 2017 12:00	Ba Don	Vietnam	0.1
	22 Jul 2017 05:15	Lengzilin	China	0.1
	22 Jul 2017 05:30	Hsin-chou	China	0.1
	22 Jul 2017 00:30	Dani-thagya	Myanmar	0.1
	21 Jul 2017 17:45	Shagang	China	0.1
	21 Jul 2017 17:45	Beihai	China	0.1
	21 Jul 2017 17:45	Dangjiang	China	0.1
	21 Jul 2017 17:45	Qianjiang	China	0.1
	22 Jul 2017 05:30	Santouzui	China	0.1
	22 Jul 2017 05:30	Hsi-t'ou	China	0.1
	21 Jul 2017 14:30	Thon My Thuy	Vietnam	0.1
	21 Jul 2017 14:30	The Chi Tay	Vietnam	0.1
	21 Jul 2017 12:15	Vinh Son	Vietnam	0.1
	21 Jul 2017 16:15	Haian	China	0.1
	21 Jul 2017 16:15	Boshegang	China	0.1
	21 Jul 2017 16:15	Longtang	China	0.1
	22 Jul 2017 05:45	Pinghai	China	0.1
	21 Jul 2017 18:30	Shuiwei	China	0.1
	21 Jul 2017 18:30	Liu-sha-ying	China	0.1
	21 Jul 2017 18:30	Liusha	China	0.1
	21 Jul 2017 18:30	Mai-ch'en-hsu	China	0.1
	21 Jul 2017 18:30	Maichen	China	0.1
	21 Jul 2017 15:00	Tap Phuc	Vietnam	0.1
	21 Jul 2017 15:00	Vinh Ngai	Vietnam	0.1
	21 Jul 2017 15:00	Tien Yen	Vietnam	0.1
	21 Jul 2017 13:15	Bebeladan	Philippines	0.1
	21 Jul 2017 13:15	El Nido	Philippines	0.1
	21 Jul 2017 13:15	Camago	Philippines	0.1
	21 Jul 2017 13:15	Manlalec	Philippines	0.1
	21 Jul 2017 13:15	Barotuan	Philippines	0.1
	21 Jul 2017 13:15	Oton	Philippines	0.1
	21 Jul 2017 13:15	Palalong	Philippines	0.1
	21 Jul 2017 13:15	Sibaltan	Philippines	0.1
	21 Jul 2017 13:15	Maytiguid	Philippines	0.1
	21 Jul 2017 13:15	Batas	Philippines	0.1
	21 Jul 2017 13:15	Pinamalayan	Philippines	0.1
	21 Jul 2017 23:15	Hai Phong	Vietnam	0.1
	21 Jul 2017 23:15	Thuy U	Vietnam	0.1
	21 Jul 2017 23:15	Hoang Chau	Vietnam	0.1
	22 Jul 2017 06:00	Shangyang	China	0.1
	21 Jul 2017 14:45	Cau Lo	Vietnam	0.1
	22 Jul 2017 06:00	Rudong	China	0.1
	21 Jul 2017 16:15	Xiuying	China	0.1
	21 Jul 2017 16:15	Haikou	China	0.1
	21 Jul 2017 12:00	Luewei	China	0.1
	21 Jul 2017 12:00	Shadi	China	0.1
	22 Jul 2017 00:30	Bogyiywa	Myanmar	0.1
	21 Jul 2017 22:00	Dang Noi	Vietnam	0.1
	21 Jul 2017 22:00	Dam Ha	Vietnam	0.1
	21 Jul 2017 22:00	Cai Kien	Vietnam	0.1
	22 Jul 2017 09:15	Yandun	China	0.1
	22 Jul 2017 09:15	Huiwen	China	0.1
	21 Jul 2017 16:15	Qianshan	China	0.1
	21 Jul 2017 16:15	Dalangwan	China	0.1
	22 Jul 2017 11:30	Boao	China	0.1
	21 Jul 2017 15:15	Ca Lu	Vietnam	0.1
	21 Jul 2017 15:15	Ba Lang	Vietnam	0.1
	21 Jul 2017 15:15	Xi Dua	Vietnam	0.1
	21 Jul 2017 14:30	Hoa Cam	Vietnam	0.1
	21 Jul 2017 14:30	Hoi Thong	Vietnam	0.1
	21 Jul 2017 12:45	Lajiwei	China	0.1
	21 Jul 2017 12:45	Fan Kwai Tong	Hong Kong (China)	0.1
	21 Jul 2017 12:45	Tai Long Wan	Hong Kong (China)	0.1
	21 Jul 2017 12:45	Lau Fau Sha	Hong Kong (China)	0.1
	22 Jul 2017 05:30	Rach Gia	Vietnam	0.1
	22 Jul 2017 05:30	Kien Thanh	Vietnam	0.1
	22 Jul 2017 09:15	Chen Lan	China	0.1
	22 Jul 2017 09:15	Qinglan	China	0.1
	21 Jul 2017 22:00	Cot Doai	Vietnam	0.1
	21 Jul 2017 15:45	Lang Loi	Vietnam	0.1
	22 Jul 2017 01:45	Ap Cau Thang	Vietnam	0.1
	22 Jul 2017 01:45	Xom Ba Tra	Vietnam	0.1
	22 Jul 2017 01:45	Ap Giong Ke	Vietnam	0.1
	21 Jul 2017 16:30	Qiaotou	China	0.1
	21 Jul 2017 18:30	Ch'i-shui	China	0.1
	21 Jul 2017 18:30	Haikang	China	0.1
	22 Jul 2017 00:15	Houzhai	China	0.1
	22 Jul 2017 00:15	Shenao	China	0.1
	22 Jul 2017 00:15	Nanao	China	0.1
	21 Jul 2017 17:15	Cheng'anwei	China	0.1
	21 Jul 2017 17:15	Fumunchai	China	0.1
	21 Jul 2017 17:15	Fumuntschai	China	0.1
	21 Jul 2017 17:15	Baihao	China	0.1
	21 Jul 2017 17:15	Taiping	China	0.1
	21 Jul 2017 17:15	Sha-ching	China	0.1
	21 Jul 2017 17:15	Heping	China	0.1
	22 Jul 2017 04:45	Puqian	China	0.1
	22 Jul 2017 08:00	Kumbatang	Malaysia	0.1
	22 Jul 2017 08:00	Langkon	Malaysia	0.1
	22 Jul 2017 08:00	Kampong Radus	Malaysia	0.1
	22 Jul 2017 08:00	Tandek	Malaysia	0.1
	22 Jul 2017 08:00	Taritapan	Malaysia	0.1
	22 Jul 2017 08:00	Kpg Mempakad	Malaysia	0.1
	21 Jul 2017 23:30	Cheung Kang	Hong Kong (China)	0.1
	21 Jul 2017 23:30	Imtin	China	0.1
	21 Jul 2017 23:30	Cheung Wo	Hong Kong (China)	0.1
	21 Jul 2017 23:30	Pak Sha Au	Hong Kong (China)	0.1
	21 Jul 2017 23:30	Khitschhung	China	0.1
	21 Jul 2017 23:30	Dapeng	China	0.1
	21 Jul 2017 15:45	Xuan Moc	Vietnam	0.1
	21 Jul 2017 15:45	Hoang Xa	Vietnam	0.1
	21 Jul 2017 15:45	Yen Cat	Vietnam	0.1
	21 Jul 2017 15:45	Sam Son	Vietnam	0.1
	21 Jul 2017 13:00	Chixi	China	0.1
	21 Jul 2017 16:30	Hoi An	Vietnam	0.1
	21 Jul 2017 21:15	Vinh Thuc	Vietnam	0.1

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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.
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