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 MALIKSI-18
in Japanfrom 08 Jun 2018 00:00 UTC to 11 Jun 2018 12:00 UTC
Storm surge for tropical cyclone MALIKSI-18

Green alert for storm surge impact in Japan

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.

This report is for advisory number 15 of tropical cyclone MALIKSI-18 issued at 11 Jun 2018 12:00:00 (GDACS Event ID 1000457). However, the calculation for advisory number is not completed. Therefore, the latest available calculation is shown. All links, data, statistics and maps refer to the latest available calculation.


Current impact estimate:

  • Population affected by cyclone-strength winds (>120km/h): No people affected
  • Saffir-Simpson Category: Tropical storm
  • Maximum sustained wind speed: 111 km/h
  • The maximum Storm surge height is  0.3m in Minami-daito, Japan. This height is estimated for 10 Jun 2018 03:00:00.


Previous calculations: see calculation for advisory number 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Show forecast grid

Storm surge

View animation and affected locations in an interactive map: open

Storm surge maximum height
Storm surge maximum height (Source: JRC)
Storm surge animation
Storm surge animation (Source: JRC)

Affected locations

Date Name Country Storm surge height (m)
10 Jun 2018 03:00:00 Minami-daito Japan  0.3m
10 Jun 2018 03:00:00 Minamimura Japan  0.3m
10 Jun 2018 03:00:00 Kyuto Japan  0.3m
10 Jun 2018 03:00:00 Kita-daito Japan  0.3m
11 Jun 2018 14:00:00 Komagamine Japan  0.2m
11 Jun 2018 14:00:00 Nakumura Japan  0.2m
11 Jun 2018 14:00:00 Tachiya Japan  0.2m
11 Jun 2018 14:00:00 Haragama Japan  0.2m
11 Jun 2018 14:00:00 Umekawa Japan  0.2m
11 Jun 2018 14:00:00 Isobe Japan  0.2m
11 Jun 2018 14:00:00 Minami-Ibi Japan  0.2m
09 Jun 2018 18:00:00 Dinggang China  0.2m
09 Jun 2018 18:00:00 Ancheng China  0.2m
09 Jun 2018 18:00:00 Chang-chia-li China  0.2m
Locations affected by Storm surge (15 of 277)
Calculation based on advisory number 14 of 11 Jun 2018 06:00:00.
(Simulation using 2 minute resolution)

See full locations list (RSS)

More information

The atmospheric forcing included in the storm surge model are the pressure drop and the wind-water friction. The effects of the short waves induced by the wind (wave setup) and the precipitations are not yet implemented in the model. The model has been validated mainly in areas of shallow water (Caribbean, Bay of Bengal). Results in other basins may be inaccurate.

For a full list of available products related to this event, please refer to the GDACS Resources page.