Overall Green alert Tropical Cyclone for DIANMU-21
in Viet Nam, Laos
23 Sep 2021 12 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

Tropical Cyclone DIANMU-21 can have a low 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 68 km/h
Maximum storm surge 0.3 m (23 Sep 16:00 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
GFS Current 68 km/h 0.3 m 81 mm 0.5
GFS Overall 119 km/h 0.4 m 432 mm 0.5

Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

119 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 Sep 2021 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
GREEN 1 22 Sep 2021 12:00 50 - - - - - - -
GREEN 2 22 Sep 2021 18:00 54 - - - - - - -
GREEN 3 23 Sep 2021 00:00 119 - - - - - - -
GREEN 4 23 Sep 2021 06:00 72 - - - - - - -
GREEN 5 23 Sep 2021 12:00 68 - - - - - - -
Download:





Impact estimation for the next 72h
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Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 23 Sep 2021 12:00 UTC
LevelCountryPopulation 
250-500 mmVietnam, Laos230,370
+
Vietnam226,242 
Laos4,127 
100-250 mmVietnam, Laos, China, Myanmar, Thailand, Cambodia11,552,764
+
China287,894 
Vietnam7,444,023 
Myanmar604,789 
Laos713,882 
Thailand2,479,143 
Cambodia23,030 
50-100 mmChina, Vietnam, Myanmar, Laos, Thailand, Cambodia, Malaysia59,529,161
+
China5,181,668 
Vietnam21,054,544 
Myanmar4,137,548 
Laos1,467,082 
Thailand23,071,056 
Cambodia4,465,339 
Malaysia151,922 

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 22 Sep 2021 12:00 117 - - - - - - -
Blue 2 22 Sep 2021 18:00 179 70 thousand
- - - - Myanmar
Blue 3 23 Sep 2021 00:00 301 140 thousand
- - - - Myanmar
Blue 4 23 Sep 2021 06:00 92 -
- - - - - Vietnam
Blue 5 23 Sep 2021 12:00 316 11.8 million
- - - China, Vietnam, Myanmar, Laos, Thailand, Cambodia, Malaysia




Impact estimation for the next 72h
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StormSurge

0.3 m

The maximum Storm surge height is  0.3m in Hoi An, Vietnam. This height is estimated for 23 Sep 2021 16:00 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 23 Sep 2021 12:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
23 Sep 2021 16:00 Hoi An Vietnam  0.3
23 Sep 2021 16:00 An Thach Vietnam  0.3
23 Sep 2021 14:00 Phu Xuan Ha Vietnam  0.3
23 Sep 2021 14:00 Tuyet iem Vietnam  0.3
23 Sep 2021 16:00 Giem Ha Trung Vietnam  0.2
23 Sep 2021 16:00 Dong Ha Vietnam  0.2
23 Sep 2021 16:00 Thon My Thuy Vietnam  0.2
23 Sep 2021 15:30 Da Nang Vietnam  0.2
23 Sep 2021 15:30 Xom Da Me Vietnam  0.2
23 Sep 2021 15:30 Mui Da Nang Vietnam  0.2
23 Sep 2021 15:00 The Chi Tay Vietnam  0.2
23 Sep 2021 15:00 An Thuan Vietnam  0.2
23 Sep 2021 15:00 Thai Duong Thuong Vietnam  0.2
23 Sep 2021 15:00 Thon Thai Duong Ha Vietnam  0.2
23 Sep 2021 13:30 Thanh Thuy Vietnam  0.2
23 Sep 2021 16:00 An Cu Vietnam  0.2
23 Sep 2021 16:00 Ap Quan Nam Vietnam  0.2
23 Sep 2021 16:15 Cat Son Phuong Vietnam  0.2
23 Sep 2021 15:45 Thon Phu An Vietnam  0.2
23 Sep 2021 15:45 Mui Chon Dong Vietnam  0.2
23 Sep 2021 15:30 Phung Chinh Vietnam  0.2
23 Sep 2021 15:30 Phu Loc Vietnam  0.2
23 Sep 2021 17:30 Ly Nhon Thon Vietnam  0.2
23 Sep 2021 17:30 Dong Hoi Vietnam  0.2
23 Sep 2021 17:30 Cua Thon Vietnam  0.2
23 Sep 2021 16:45 Mui Lay Vietnam  0.2
23 Sep 2021 15:30 Phu Bai Vietnam  0.2
23 Sep 2021 15:30 Thon My Khanh Vietnam  0.2
23 Sep 2021 15:30 Ha Tru Vietnam  0.2
23 Sep 2021 18:00 Taiping China  0.2
23 Sep 2021 18:00 Longshe China  0.2
23 Sep 2021 18:00 Tung-li China  0.2
23 Sep 2021 18:00 Dongshan China  0.2
23 Sep 2021 18:00 Dongjian China  0.2
23 Sep 2021 18:00 Houhu China  0.2
23 Sep 2021 18:00 Xianmai China  0.2
23 Sep 2021 18:00 Dongli China  0.2
23 Sep 2021 16:45 Xom Lap Vietnam  0.2
23 Sep 2021 18:00 Bengtang China  0.2
23 Sep 2021 18:00 Houhai China  0.2
23 Sep 2021 16:45 Baisha China  0.2
23 Sep 2021 16:45 Shaoyao China  0.2
23 Sep 2021 16:45 Xingyou China  0.2
23 Sep 2021 16:45 Huangpo China  0.2
23 Sep 2021 16:45 Chiu-wu-ch'uan China  0.2
23 Sep 2021 12:00 Mahameik Myanmar  0.2
23 Sep 2021 12:00 Thamaseikta Myanmar  0.2
23 Sep 2021 12:00 Damathat Myanmar  0.2
23 Sep 2021 17:00 Ma-hsieh China  0.2
23 Sep 2021 17:00 Badongxu China  0.2
23 Sep 2021 17:00 Potou China  0.2
23 Sep 2021 13:00 An Hai Vietnam  0.2
23 Sep 2021 17:15 Jinhe China  0.2
23 Sep 2021 17:15 Wai-lo China  0.2
23 Sep 2021 18:00 Van Trang Vietnam  0.2
23 Sep 2021 18:00 Hai Khau Vietnam  0.2
23 Sep 2021 18:00 Vinh Ang Vietnam  0.2
23 Sep 2021 18:00 Kiem Long Vietnam  0.2
23 Sep 2021 18:00 Lang Loi Vietnam  0.2
23 Sep 2021 18:00 Vinh Son Vietnam  0.2
23 Sep 2021 18:00 Guanchang China  0.2
23 Sep 2021 18:00 Huangwu China  0.2
23 Sep 2021 18:00 Nayan China  0.2
23 Sep 2021 18:00 Doulongcun China  0.2
23 Sep 2021 17:30 Ba Don Vietnam  0.2
23 Sep 2021 16:45 Meilu China  0.2
23 Sep 2021 16:45 Hai-lu China  0.2
23 Sep 2021 17:45 Tho Ngoa Vietnam  0.2
23 Sep 2021 12:15 Tam Quan Vietnam  0.2
23 Sep 2021 12:15 Ca Cong Vietnam  0.2
23 Sep 2021 18:00 Yen Cat Vietnam  0.2
23 Sep 2021 18:00 Diem Phe Vietnam  0.2
23 Sep 2021 18:00 Sam Son Vietnam  0.2
23 Sep 2021 18:00 Xa Loan Vietnam  0.2
23 Sep 2021 18:00 Dot Dong Vietnam  0.2
23 Sep 2021 18:00 Nam Son Vietnam  0.2
23 Sep 2021 13:00 Ky Tan Vietnam  0.2
23 Sep 2021 17:15 Nanping China  0.2
23 Sep 2021 17:15 Cuihengcun China  0.2
23 Sep 2021 17:15 Xiazha China  0.2
23 Sep 2021 17:15 Maogang China  0.2
23 Sep 2021 17:15 Macau Macau (China)  0.2
23 Sep 2021 17:15 Heung chau China  0.2
23 Sep 2021 17:15 Ch'i-ao China  0.2
23 Sep 2021 18:00 Ha Tinh Vietnam  0.2
23 Sep 2021 18:00 Trung Nghia Vietnam  0.2
23 Sep 2021 18:00 Trung Tiet Vietnam  0.2
23 Sep 2021 18:00 Cau Thuong Vietnam  0.2
23 Sep 2021 18:00 Hau Con Vietnam  0.2
23 Sep 2021 18:00 Con Soi Vietnam  0.2
23 Sep 2021 18:00 Xuan Moc Vietnam  0.2
23 Sep 2021 18:00 Hoang Xa Vietnam  0.2
23 Sep 2021 18:00 Ky Anh Vietnam  0.2
23 Sep 2021 18:00 Con Van Vietnam  0.2
23 Sep 2021 12:00 Pauktaw Myanmar  0.2
23 Sep 2021 12:00 Zokali Myanmar  0.2
23 Sep 2021 12:00 Taungxun Myanmar  0.2
23 Sep 2021 12:00 Taunggyi Myanmar  0.2
23 Sep 2021 12:00 Budin Myanmar  0.2
23 Sep 2021 12:00 Kadaik Myanmar  0.2
23 Sep 2021 12:00 Donwun Myanmar  0.2
23 Sep 2021 18:00 Thien Linh Vietnam  0.2
23 Sep 2021 18:00 Trung Thinh Vietnam  0.2
23 Sep 2021 17:15 Qianshan China  0.2
23 Sep 2021 18:00 Ca Lu Vietnam  0.2
23 Sep 2021 18:00 Ba Lang Vietnam  0.2
23 Sep 2021 15:30 Min-chung China  0.2
23 Sep 2021 15:30 Qishan China  0.2
23 Sep 2021 18:00 Xi Dua Vietnam  0.2
23 Sep 2021 12:00 Shwe-o Myanmar  0.2
23 Sep 2021 18:00 Van Lam Trai Vietnam  0.2
23 Sep 2021 18:00 Long Chau Vietnam  0.2
23 Sep 2021 16:45 Taipa Macau (China)  0.1
23 Sep 2021 16:45 Coloane Macau (China)  0.1
23 Sep 2021 16:00 Dagang China  0.1
23 Sep 2021 16:00 Yuwotou China  0.1
23 Sep 2021 16:00 Huangge China  0.1
23 Sep 2021 16:00 Dashatou China  0.1
23 Sep 2021 16:00 Wan-ch'ing-sha China  0.1
23 Sep 2021 16:00 Jiang'ouwei China  0.1
23 Sep 2021 16:00 Cheng'anwei China  0.1
23 Sep 2021 16:00 Fumunchai China  0.1
23 Sep 2021 16:00 Fumuntschai China  0.1
23 Sep 2021 16:00 Baihao China  0.1
23 Sep 2021 16:00 Taiping China  0.1
23 Sep 2021 16:30 Shuidong China  0.1
23 Sep 2021 16:30 Dianbai China  0.1
23 Sep 2021 16:30 Danchang China  0.1
23 Sep 2021 17:15 Ch'i-ching China  0.1
23 Sep 2021 17:15 Magang China  0.1
23 Sep 2021 18:00 Quan Phuong Trung Trai Vietnam  0.1
23 Sep 2021 18:00 Lien Phu Vietnam  0.1
23 Sep 2021 17:45 Huangliu China  0.1
23 Sep 2021 17:45 Chongpo China  0.1
23 Sep 2021 17:45 Chiu-so China  0.1
23 Sep 2021 17:45 Jiusuo China  0.1
23 Sep 2021 12:00 Kangyisu Myanmar  0.1
23 Sep 2021 18:00 Hoi Thong Vietnam  0.1
23 Sep 2021 18:00 Thuan Thien Vietnam  0.1
23 Sep 2021 13:00 Duc Pho Vietnam  0.1
23 Sep 2021 17:45 Quan Phuong Ha Vietnam  0.1
23 Sep 2021 17:45 Nghoung Nhan Vietnam  0.1
23 Sep 2021 13:45 Sha-ching China  0.1
23 Sep 2021 13:45 Heping China  0.1
23 Sep 2021 13:45 Nantou China  0.1
23 Sep 2021 17:45 Diancheng China  0.1
23 Sep 2021 13:00 An Lac Vietnam  0.1
23 Sep 2021 16:30 Lajiwei China  0.1
23 Sep 2021 18:00 Yinggehai China  0.1
23 Sep 2021 18:00 Foluo China  0.1
23 Sep 2021 18:00 Cau Lo Vietnam  0.1
23 Sep 2021 18:00 Hoa Cam Vietnam  0.1
23 Sep 2021 13:30 Chung-yuan China  0.1
23 Sep 2021 13:30 Hele China  0.1
23 Sep 2021 17:00 Vinh Lai Vietnam  0.1
23 Sep 2021 17:00 Tap Phuc Vietnam  0.1
23 Sep 2021 17:00 Vinh Ngai Vietnam  0.1
23 Sep 2021 17:00 Tien Yen Vietnam  0.1
23 Sep 2021 12:00 Tanbingyaung Myanmar  0.1
23 Sep 2021 17:45 Luewei China  0.1
23 Sep 2021 17:45 Shalan China  0.1
23 Sep 2021 17:45 Shadi China  0.1
23 Sep 2021 17:45 Dalangwan China  0.1
23 Sep 2021 18:00 Tiantou China  0.1
23 Sep 2021 18:00 Chixi China  0.1
23 Sep 2021 18:00 Meige China  0.1
23 Sep 2021 18:00 Mashan China  0.1
23 Sep 2021 18:00 Pingsha China  0.1
23 Sep 2021 13:45 Chiu-chieh China  0.1
23 Sep 2021 13:45 Shekou China  0.1
23 Sep 2021 13:45 Castle Peak New Town Hong Kong (China)  0.1
23 Sep 2021 13:45 Tuen Mun Hong Kong (China)  0.1
23 Sep 2021 13:45 Yuen Long Hong Kong (China)  0.1
23 Sep 2021 13:45 Baoan China  0.1
23 Sep 2021 13:45 Hoi Pa Hong Kong (China)  0.1
23 Sep 2021 13:45 Yuen Long Hong Kong (China)  0.1
23 Sep 2021 13:45 Tai Po Hong Kong (China)  0.1
23 Sep 2021 13:45 Tai Po Industrial Estate Hong Kong (China)  0.1
23 Sep 2021 13:45 Fung Yuen Hong Kong (China)  0.1
23 Sep 2021 16:30 Tonggu China  0.1
23 Sep 2021 18:00 Mei-ko China  0.1
23 Sep 2021 18:00 Doumen China  0.1
23 Sep 2021 17:45 Dayang China  0.1
23 Sep 2021 17:45 Guanghai China  0.1
23 Sep 2021 12:45 Shangyaung Myanmar  0.1
23 Sep 2021 12:15 Khindan Myanmar  0.1
23 Sep 2021 17:00 Rudong China  0.1
23 Sep 2021 18:00 Jiangcheng China  0.1
23 Sep 2021 18:00 Baipu China  0.1
23 Sep 2021 18:00 Dagou China  0.1
23 Sep 2021 18:00 Hsin-chou China  0.1
23 Sep 2021 15:15 San-tsao China  0.1
23 Sep 2021 17:30 Yacheng China  0.1
23 Sep 2021 12:00 Dien Truong Vietnam  0.1
23 Sep 2021 12:00 Darein Myanmar  0.1
23 Sep 2021 12:00 Paung Myanmar  0.1
23 Sep 2021 18:00 Hsi-t'ou China  0.1
23 Sep 2021 18:00 Lengzilin China  0.1
23 Sep 2021 18:00 Pinggang China  0.1
23 Sep 2021 16:15 Xiaolin China  0.1
23 Sep 2021 17:00 Gancheng China  0.1
23 Sep 2021 17:00 Banqiao China  0.1
23 Sep 2021 17:00 Longyou China  0.1
23 Sep 2021 17:00 Lingtou China  0.1
23 Sep 2021 17:45 Shangyang China  0.1
23 Sep 2021 16:15 Fan Kwai Tong Hong Kong (China)  0.1
23 Sep 2021 16:15 Tai Long Wan Hong Kong (China)  0.1
23 Sep 2021 18:00 Chikan China  0.1
23 Sep 2021 18:00 Zhanjiang China  0.1
23 Sep 2021 13:15 Boao China  0.1
23 Sep 2021 18:00 Santouzui China  0.1
23 Sep 2021 12:45 Chanh Giao Vietnam  0.1
23 Sep 2021 13:30 Thegondan Myanmar  0.1
23 Sep 2021 13:30 Thaunggon Myanmar  0.1
23 Sep 2021 13:30 Mibya Myanmar  0.1
23 Sep 2021 13:30 Kala-ywa Myanmar  0.1
23 Sep 2021 13:30 Ase-ywa Myanmar  0.1
23 Sep 2021 17:45 Chen-hai China  0.1
23 Sep 2021 18:00 Ching-an China  0.1
23 Sep 2021 18:00 Baijiao China  0.1
23 Sep 2021 13:00 Sz Pak Hong Kong (China)  0.1
23 Sep 2021 13:00 Nam Wan Hong Kong (China)  0.1
23 Sep 2021 12:00 Kin-hon Vietnam  0.1
23 Sep 2021 12:00 Vinh Hoi Vietnam  0.1
23 Sep 2021 17:00 Beidou China  0.1
23 Sep 2021 18:00 Nam Dong Vietnam  0.1
23 Sep 2021 18:00 Hengpi China  0.1
23 Sep 2021 18:00 Shen-ching China  0.1
23 Sep 2021 17:45 Sanya China  0.1
23 Sep 2021 13:00 Lau Fau Sha Hong Kong (China)  0.1
23 Sep 2021 13:00 Ngau Kwu Long Hong Kong (China)  0.1
23 Sep 2021 18:00 Chengcun China  0.1
23 Sep 2021 17:00 Dapeng China  0.1
23 Sep 2021 17:00 Taipang China  0.1
23 Sep 2021 17:00 Shagang China  0.1
23 Sep 2021 17:00 Aotou China  0.1
23 Sep 2021 17:00 Luzui China  0.1
23 Sep 2021 17:00 Renshan China  0.1