Overall Green alert Tropical Cyclone for MARIAN-21
in Cocos (Keeling) Islands,
26 Feb 2021 12 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

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

Meteorological source GFS
Exposed countries Cocos (Keeling) Islands
Exposed population No people in Category 1 or higher
Maximum wind speed 86 km/h
Maximum storm surge 0.1 m (26 Feb 14:30 UTC)
Vulnerability Low (Cocos Is.)

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 86 km/h 0.1 m 162 mm 0.5
GFS Overall 140 km/h 0.1 m 1036 mm 0.5

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

TOP

Wind

140 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 26 Feb 2021 12:00 UTC
CategoryCountryPopulation 
Tropical StormCocos (Keeling) Islands596 

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 26 Feb 2021 00:00 83 - - - - - - -
GREEN 2 26 Feb 2021 06:00 79 - - - - - - -
GREEN 3 26 Feb 2021 12:00 148 -
- - - - - Cocos (Keeling) Islands
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 26 Feb 2021 12:00 UTC
LevelCountryPopulation 
50-100 mmChristmas Island1,530 

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 26 Feb 2021 00:00 148 - - - - - - -
Blue 2 26 Feb 2021 06:00 204 - - - - - - -
Blue 3 26 Feb 2021 12:00 480 -
- - - - - Christmas Island




Impact estimation for the next 72h
TOP

StormSurge

0.1 m

The maximum Storm surge height is  0.1m in West Island, Cocos (Keeling) Islands. This height is estimated for 26 Feb 2021 14:30 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 26 Feb 2021 12:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
26 Feb 2021 14:30 West Island Cocos (Keeling) Islands  0.1