Overall Green alert Tropical Cyclone for CHOI-WAN-21
in Japan, China, Philippines,
29 May 2021 18 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

Tropical Cyclone CHOI-WAN-21 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GFS
Exposed countries Japan
Exposed population No people in Category 1 or higher
Maximum wind speed 58 km/h
Maximum storm surge 0.2 m (29 May 22:00 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 0.2 m 178 mm 0.5
GFS Overall 112 km/h 0.7 m 668 mm 0.5

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

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Wind

112 km/h

Up to Few people can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 29 May 2021 18:00 UTC
CategoryCountryPopulation 
Tropical StormJapan114 

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 29 May 2021 18:00 79 -
- - - - - Japan
Download:





Impact estimation for the next 72h
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Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 29 May 2021 18:00 UTC
LevelCountryPopulation 
100-250 mmJapan, China, Taiwan21,845,989
+
China21,785,331 
Japan465 
Taiwan60,192 
50-100 mmChina, Japan, Taiwan, Hong Kong, Philippines, Micronesia, Palau120,449,814
+
China104,456,038 
Japan1,658 
Taiwan11,173,611 
Hong Kong4,391,515 
Philippines426,893 
Micronesia01 
Palau95 

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 29 May 2021 18:00 511 21.8 million
- - - - China, Japan, Taiwan, Hong Kong, Philippines, Micronesia, Palau




Impact estimation for the next 72h
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StormSurge

0.2 m

The maximum Storm surge height is  0.2m in Guihing, Philippines. This height is estimated for 29 May 2021 22:00 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 29 May 2021 18:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
29 May 2021 22:00 Guihing Philippines  0.2
29 May 2021 22:00 Haley Philippines  0.2
29 May 2021 22:00 Digos Philippines  0.2
29 May 2021 22:00 Malang Philippines  0.2
29 May 2021 22:00 Bulacan Philippines  0.2
29 May 2021 22:00 Kulagsing Philippines  0.2
29 May 2021 22:00 Santa Moria Philippines  0.2
29 May 2021 22:00 Kumasi Philippines  0.2
29 May 2021 22:00 Tubalan Philippines  0.2
29 May 2021 22:00 Lacaron Philippines  0.2
29 May 2021 23:15 Linao Philippines  0.2
29 May 2021 23:15 Bisagu Philippines  0.2
29 May 2021 23:15 Aparri Philippines  0.2
29 May 2021 23:15 Alilinu Philippines  0.2
29 May 2021 23:15 Punta Philippines  0.2
29 May 2021 23:15 Balza Philippines  0.2
29 May 2021 23:15 Buguey Philippines  0.2
29 May 2021 23:45 Huanshan China  0.2
29 May 2021 23:45 Kanmen China  0.2
29 May 2021 23:45 Ch'ing-chiang China  0.2
29 May 2021 23:45 Chumen China  0.2
29 May 2021 23:45 Lingmen China  0.2
29 May 2021 23:45 Aohuan China  0.2
29 May 2021 23:45 Guan'ao China  0.2
30 May 2021 00:00 Ch'ien-tung-hsu China  0.1
30 May 2021 00:00 Qiandong China  0.1
30 May 2021 00:00 Jingzhou China  0.1
30 May 2021 00:00 Huanglong China  0.1
30 May 2021 00:00 Huanggang China  0.1
30 May 2021 00:00 Raoping China  0.1
30 May 2021 00:00 Zhelin China  0.1
30 May 2021 00:00 Shenao China  0.1
30 May 2021 00:00 Dalu China  0.1
30 May 2021 00:00 Shih-t'ang China  0.1
30 May 2021 00:00 Songmen China  0.1
30 May 2021 00:00 Hepu China  0.1
30 May 2021 00:00 Chiu-nan-t'ien China  0.1
30 May 2021 00:00 Shihphu China  0.1
29 May 2021 23:45 Sansha China  0.1
29 May 2021 23:45 Huang-ch'i China  0.1
29 May 2021 23:45 Shacheng China  0.1
29 May 2021 23:45 Chin-ch'ing China  0.1
30 May 2021 00:00 Danmen China  0.1
29 May 2021 23:30 Xiaguan China  0.1
29 May 2021 23:30 Pucheng China  0.1
29 May 2021 23:30 Sha-fan-chieh China  0.1
29 May 2021 23:30 Jinxiang China  0.1
29 May 2021 23:45 Dagou China  0.1
29 May 2021 23:45 Hsin-chou China  0.1
29 May 2021 23:45 Chengcun China  0.1
29 May 2021 23:45 Santouzui China  0.1
29 May 2021 23:45 Hsi-t'ou China  0.1
29 May 2021 23:45 Lengzilin China  0.1
29 May 2021 23:45 Pinggang China  0.1
29 May 2021 23:45 Jiangcheng China  0.1
29 May 2021 23:45 Baipu China  0.1
30 May 2021 00:00 Xugou China  0.1
30 May 2021 00:00 Dongxi Liandao China  0.1
30 May 2021 00:00 Fan Kwai Tong Hong Kong (China)  0.1
30 May 2021 00:00 Tai Long Wan Hong Kong (China)  0.1
30 May 2021 00:00 Shekou China  0.1
30 May 2021 00:00 Lau Fau Sha Hong Kong (China)  0.1
30 May 2021 00:00 Ngau Kwu Long Hong Kong (China)  0.1
30 May 2021 00:00 Castle Peak New Town Hong Kong (China)  0.1
30 May 2021 00:00 Tuen Mun Hong Kong (China)  0.1
30 May 2021 00:00 Ham Tin Hong Kong (China)  0.1
30 May 2021 00:00 Yuen Long Hong Kong (China)  0.1
30 May 2021 00:00 Sz Pak Hong Kong (China)  0.1
30 May 2021 00:00 Nam Wan Hong Kong (China)  0.1
30 May 2021 00:00 Hoi Pa Hong Kong (China)  0.1
30 May 2021 00:00 Lo Tik Wan Hong Kong (China)  0.1
30 May 2021 00:00 Yancangcheng China  0.1
30 May 2021 00:00 Hsing-chuang China  0.1
30 May 2021 00:00 Haitou China  0.1
30 May 2021 00:00 Shiqiao China  0.1
30 May 2021 00:00 Hsia-k'ou China  0.1
30 May 2021 00:00 Jiuliqi China  0.1
30 May 2021 00:00 Che-wang China  0.1
30 May 2021 00:00 Shangpan China  0.1
30 May 2021 00:00 Sichalu China  0.1
29 May 2021 23:15 Chelim China  0.1
30 May 2021 00:00 Fenshui China  0.1
30 May 2021 00:00 Andongwei China  0.1
30 May 2021 00:00 Lanshantou China  0.1
30 May 2021 00:00 Taolekow China  0.1
30 May 2021 00:00 Liujiazhai China  0.1
30 May 2021 00:00 Shijiusuo China  0.1
29 May 2021 23:15 I-shan China  0.1
30 May 2021 00:00 Yanweigang China  0.1
29 May 2021 23:15 Guhuai China  0.1
29 May 2021 23:15 Chiang-t'ien China  0.1
29 May 2021 23:15 Chang-chiang China  0.1
29 May 2021 23:15 Chin-feng China  0.1
29 May 2021 23:15 Wuhang China  0.1
30 May 2021 00:00 Chiu-chieh China  0.1
30 May 2021 00:00 Baoan China  0.1
29 May 2021 21:30 Magtang Philippines  0.1
29 May 2021 21:30 Tandoc Philippines  0.1
29 May 2021 21:30 Lamon Philippines  0.1
29 May 2021 21:30 Union Philippines  0.1
29 May 2021 21:30 San Vicente Philippines  0.1
29 May 2021 21:30 Gongonan Philippines  0.1
29 May 2021 21:30 Mapid Philippines  0.1
29 May 2021 21:30 Balaton Philippines  0.1
30 May 2021 00:00 Qiganshi China  0.1
30 May 2021 00:00 Ju-shan-k'ou China  0.1
30 May 2021 00:00 Hai-yang-so China  0.1
30 May 2021 00:00 Nanhong China  0.1
30 May 2021 00:00 Baishatan China  0.1
30 May 2021 00:00 Zhuangyuanqiao China  0.1
30 May 2021 00:00 Kaiyangtu China  0.1
30 May 2021 00:00 Longwan China  0.1
30 May 2021 00:00 Gao'ao China  0.1
30 May 2021 00:00 Siqianjie China  0.1
30 May 2021 00:00 Xiaodoumen China  0.1
30 May 2021 00:00 Shan-ch'ien China  0.1
30 May 2021 00:00 Jiangtan China  0.1
30 May 2021 00:00 Hsia-fou-t'ou China  0.1
30 May 2021 00:00 Hsia-chia-fou China  0.1
30 May 2021 00:00 Dituan China  0.1
29 May 2021 22:45 Aotou China  0.1
29 May 2021 22:45 Siwei China  0.1
29 May 2021 22:45 Houzhai China  0.1
30 May 2021 00:00 Wangcun China  0.1
30 May 2021 00:00 Wali China  0.1
30 May 2021 00:00 Xingcun China  0.1
30 May 2021 00:00 Ta-shan China  0.1
30 May 2021 00:00 Dashan China  0.1
29 May 2021 23:15 Gongkou China  0.1
29 May 2021 23:15 Sidu China  0.1
29 May 2021 23:15 Dongshan China  0.1
29 May 2021 23:15 Gongqiancun China  0.1
29 May 2021 23:15 Chencheng China  0.1
29 May 2021 23:45 Guantou China  0.1
29 May 2021 23:45 Langqi China  0.1
29 May 2021 23:45 Changmen China  0.1
29 May 2021 23:45 Tantou China  0.1
29 May 2021 23:45 Fengwo China  0.1
29 May 2021 23:45 Yunlong China  0.1
29 May 2021 23:45 Tung-tai China  0.1
29 May 2021 23:45 Baisheng China  0.1
29 May 2021 23:45 Guanban China  0.1
29 May 2021 23:45 Ting-hai China  0.1
29 May 2021 23:30 Nanao China  0.1
29 May 2021 22:30 Hanjiang China  0.1
29 May 2021 22:30 Songcheng China  0.1
29 May 2021 22:30 Changchun China  0.1
29 May 2021 22:30 Wuqu China  0.1
29 May 2021 22:30 Luxia China  0.1
29 May 2021 23:45 Fengcheng China  0.1
29 May 2021 22:45 Beidou China  0.1
29 May 2021 22:45 Chen-hai China  0.1
29 May 2021 22:45 Luewei China  0.1
29 May 2021 22:45 Shalan China  0.1
29 May 2021 23:00 Dahao China  0.1
29 May 2021 23:00 Daitou China  0.1
30 May 2021 00:00 Shentu China  0.1
30 May 2021 00:00 Chihu China  0.1
30 May 2021 00:00 Fotan China  0.1
30 May 2021 00:00 Chen-hai China  0.1
29 May 2021 23:15 Shadi China  0.1
29 May 2021 23:15 Dalangwan China  0.1
30 May 2021 00:00 Beilong China  0.1
29 May 2021 23:15 Tung-ch'ung China  0.1
29 May 2021 23:15 Xinan China  0.1
29 May 2021 23:15 Nantang China  0.1
29 May 2021 23:15 Xiahu China  0.1
29 May 2021 20:00 Karimata Japan  0.1
29 May 2021 20:00 Sugama Japan  0.1
29 May 2021 20:00 Hirara Japan  0.1
29 May 2021 20:00 Arasato Japan  0.1
29 May 2021 20:00 Bora Japan  0.1
30 May 2021 00:00 Zhangban China  0.1
30 May 2021 00:00 Wangchuan China  0.1
30 May 2021 00:00 Dawu China  0.1
30 May 2021 00:00 Fengwei China  0.1
30 May 2021 00:00 Hsiao-tso China  0.1
30 May 2021 00:00 Zhongmen China  0.1
30 May 2021 00:00 P'u-hsi China  0.1
30 May 2021 00:00 P'u-hsi-ch'eng China  0.1
30 May 2021 00:00 Fengting China  0.1
30 May 2021 00:00 Dongsha China  0.1
30 May 2021 00:00 Lingchuan China  0.1
30 May 2021 00:00 Hushi China  0.1
30 May 2021 00:00 Meizhou China  0.1