Overall Red alert Tropical Cyclone for MARIA-18
in China, 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 34 of tropical cyclone MARIA-18 issued at 11 Jul 2018 0:00:00 (GDACS Event ID 1000466). 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.


The maximum Storm surge height is  2.7m in Wuqu, China. This height is estimated for 11 Jul 2018 01:30 UTC .

Storm surge

View animation and affected locations in an interactive map: open

Storm surge maximum height
Storm surge maximum height (Source: JRC)
Max windspeed
Max windspeed (Source: ECMWF)


people affected <=10000
people affected >10000 and <100000
people affected >100000

Affected locations

Alert Date (UTC) Name Country Storm surge height (m)
11 Jul 2018 01:30 Wuqu China  2.7
11 Jul 2018 01:30 Yacheng China  2.7
11 Jul 2018 01:30 Sansha China  2.7
11 Jul 2018 03:00 Xinan China  2.5
11 Jul 2018 03:00 Nantang China  2.5
11 Jul 2018 03:00 Xiahu China  2.5
11 Jul 2018 03:00 Hanjiang China  2.5
11 Jul 2018 03:00 Changchun China  2.5
11 Jul 2018 03:00 Luxia China  2.5
11 Jul 2018 01:30 Da'ao China  2.1
11 Jul 2018 00:00 Huang-ch'i China  2.0
11 Jul 2018 00:00 Shacheng China  2.0
11 Jul 2018 00:00 Xiaguan China  2.0
11 Jul 2018 00:00 Pucheng China  1.9
Locations affected by Storm surge (15 of 4811)
Calculation based on advisory number of 09 Jul 2018 00:00.
(Simulation using 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.

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