Overall Green alert Tropical Cyclone for YAGI-18
in China, Japan


Tropical Cyclone YAGI-18 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GDACS
Exposed countries China, Japan
Exposed population No people in Category 1 or higher
Maximum wind speed 102 km/h
Maximum storm surge
Vulnerability Medium (China)


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
Current 74 km/h 0.0 m n.a. 0.5
Overall 102 km/h 0.0 m n.a. 0.5

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


74 km/h Current Max.

Up to 2.7 million people in Tropical Storm strength or higher (see SSHS)

Impact Timeline

Alert Date (UTC) Max Winds (km/h) Population in
Tropical Storm or higher
Population in
Cat 1. or higher
Green 1 06 Aug 2018 18:00 74 2.7 million No people Japan

Bulletin Timeline

Alert Date (UTC) Category
Max winds
Population in
Cat.1 or higher
Population in
Tropical Storm
or higher
Location (lat, lon) Countries
1 06 Aug 2018 18:00 Tropical depression 46 no people no people 18.8, 133.4
1 07 Aug 2018 06:00 Tropical depression 56 no people no people 19.1, 133.5
1 07 Aug 2018 18:00 Tropical depression 56 no people no people 19.4, 133.9
1 08 Aug 2018 06:00 Tropical storm 65 no people no people 19.9, 134.6
1 08 Aug 2018 18:00 Tropical storm 65 no people no people 21, 135.6
1 09 Aug 2018 18:00 Tropical storm 65 no people no people 24.2, 135.7
1 10 Aug 2018 18:00 Tropical storm 74 no people 2.8 million people 27.9, 134.7 Japan
1 11 Aug 2018 18:00 Tropical storm 74 no people no people 30.8, 133.6
Actual track of the current bulletin
The alert for forecast greater than 3 days is limited to Orange level.

Exposed population - AoIs

Exposed population in the potential affected countries, provinces and populated places




Region Province Country
Kyushu Japan
Shikoku Japan

Populated places

Name Region Province Country City class Population
O-nejime Kagoshima Japan City -
Kanoya Kagoshima Japan City 82000 people
Shibushi Kagoshima Japan City 18000 people
Taniyama Kagoshima Japan City -
Sueyoshi Kagoshima Japan City 20000 people
Kagoshima Kagoshima Japan Major city 550000 people
Miyakonojo Miyazaki Japan City 130000 people
Kokubu Kagoshima Japan City 58000 people
Kajiki Kagoshima Japan City 23000 people
Jogasaki Miyazaki Japan City -
Miyazaki Miyazaki Japan Major city 310000 people
Takaoka Miyazaki Japan City -
Tsuma Miyazaki Japan City -
Takanabe Miyazaki Japan City 22000 people
Naka-harada Miyazaki Japan City -
Nobeoka Miyazaki Japan City 120000 people
Saiki Oita Japan City 48000 people
Uwajima Ehime Japan City 58000 people
Ino Kochi Japan City 24000 people

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.


Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft)
Yakushima KUM 37 Civ. Paved Yes 4900
Tanegashima TNE 97 Civ. Paved Yes 4900
Nishinoomote IIN unknown 0
Kanoya 65 Civ. Paved Yes 7300
Miyazaki KMI 6 Civ. Paved Yes 8200
Kagoshima KOJ 276 Civ. Paved Yes 9800
Nyutabaru 79 Mil. Paved Yes 8800
Kochi KCZ 9 Civ. Paved Yes 6500


Name LOCODE Country
Yamagawa Japan
Shibushi JPSBS Japan
Kiire JPKII Japan
Aburatsu JPABU Japan
Amamioshima JPASJ Japan
Kagoshima JPKOJ Japan
Uchiumi Japan
Miyazaki JPKMI Japan
Hosojima JPHSM Japan
Totoro Japan
Nobeoka JPNOB Japan
Shimizu Japan
Tosa-Shimizu Japan
Sukumo JPSUK Japan
Saiki Ko Japan
Saga Japan
Tsukumi JPTMI Japan
Uwajima JPUWA Japan
Muroto Japan
Susaki JPSUZ Japan
Sakihama Japan
Tosa Japan
Yasuda Japan
Aki Japan
Kochi JPKCZ Japan


Reservoir Dam Name River Year
Saikyo Saikyo Matanobugawa 1984
Osumiko Takakuma Kushiragawa 1968
Sakataniko Nichinan Sakatanigawa 1984
Takeyama Takeyama Usonokigawa 1986
Oyodogawadaiichi Oyodogawadaiichi Oyodogawa 1961
Oyodogawadaini Oyodogawadaini Oyodogawa 1932
Nojiriko Iwase Iwasegawa 1967
Onoko Ayaminami Honjogawa 1958
Tachibana Tachibana Jarogawa 1963
Hitotsuse Hitotsuse Hitotsusegawa 1963
Dokawa Dokawa Dokawa 1955
Ichifusa Ichifusa Kumagawa 1959
Ouchibaru Ouchibaru Mimigawa 1956
Saigo Saigo Mimigawa 1983
Nyuugashiibako Kamishiiba Mimigawa 1955
Tsukabaru Tsukabaru Mimigawa 1938
Kitagawa Kitagawa Kitagawa 1962
Ishiba Ishiba Mietanigawa 1973
Asagiriko Nomura Hijigawa 1981
Hiranabe Hiranabe Naharigawa 1960


Rainfall accumulation of the past 24h, as detected by the Global Precipitation Measurement mission of NASA. For more information, see https://www.nasa.gov/mission_pages/GPM/main/index.html.



0 m

The JRC has developed an experimental global storm surge model. 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.

Locations affected by Storm surge (0 locations). Calculation based on advisory number 1 of 06 Aug 2018 18:00:00 UTC. (Simulation using 6 minute resolution)

Alert Date (UTC) Name Country Storm surge height (m)