Overall Red alert Tropical Cyclone for MANGKHUT-18
in China, Philippines, Guam, Northern Mariana Islands
No content available

/SS.png' alt='alertimage' height='32' align='left' style='margin:4px;float:left;' />

No content available

alert for storm surge impact based on HWRF source

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 30 of tropical cyclone MANGKHUT-18 issued at 14 Sep 2018 6:00:00 (GDACS Event ID 1000498). 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.


Population affected by cyclone-strength winds (>120km/h):No people affected
Saffir-Simpson Category: Category 4
Maximum sustained wind speed: 229 Km/h
he maximum Storm surge height is:The tropical cyclone did not reach sufficient strength to cause significant storm surge or is not predicted to affect populated places.

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: HWRF)


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

Calculation Alert color Date (UTC) Wind speed Population affected
TS CAT. 1 CAT. 2 CAT. 3 CAT. 4 CAT. 5 Countries
20180907.00 169 km/h (105 mph) No people affected
20180907.06 213 km/h (132 mph) No people affected
20180907.12 229 km/h (142 mph) No people affected

Affected locations

Date Name Country Alert Storm surge height (m)
Locations affected by Storm surge (15 of 0)
Calculation based on advisory number of 07 Sep 2018 06:00.
(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.