Overall Green alert Tropical Cyclone for WANDA-21
Off-shore
31 Oct 2021 06 UTC
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Impact Single TC
Impact based on all weather systems in the area

Impact

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

Meteorological source GFS
Exposed countries Ireland, United Kingdom, Isle of Man, Guernsey, Jersey, France
Exposed population No people in Category 1 or higher
Maximum wind speed 94 km/h
Maximum storm surge 1.9 m (31 Oct 11:00 UTC)
Vulnerability --

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 94 km/h 1.9 m 71 mm 0.5
GFS Overall 104 km/h 1.9 m 248 mm 0.5

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

TOP

Wind

104 km/h

Up to 2.2 million can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 31 Oct 2021 06:00 UTC
CategoryCountryPopulation 
Tropical StormIreland, United Kingdom, Isle of Man, Guernsey, Jersey, France2,192,642
+
Ireland217,635 
United Kingdom1,772,066 
Isle of Man37,594 
Guernsey63,138 
Jersey33,448 
France68,759 

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 31 Oct 2021 00:00 94 -
- - - - - United Kingdom, Ireland, France
GREEN 2 31 Oct 2021 06:00 94 -
- - - - - Ireland, United Kingdom, Isle of Man, Guernsey, Jersey, France
Download:





Impact estimation for the next 72h
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Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 31 Oct 2021 06:00 UTC
LevelCountryPopulation 
50-100 mmSpain, Portugal31,803
+
Spain30,116 
Portugal1,686 

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 31 Oct 2021 00:00 79 - - - - - - -
Blue 2 31 Oct 2021 06:00 160 -
- - - - - Spain, Portugal




Impact estimation for the next 72h
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StormSurge

The calculations have been performed using NAMIDANCE computer code, from Middle East Technical University.
reference: Zaytsev, Andrey; Kurkin, Andrey; Pelinovsky, Efim; Yalciner, Ahmet C. - NUMERICAL TSUNAMI MODEL NAMI-DANCE. - Science of Tsunami Hazards . Nov2019, Vol. 38 Issue 4, p151-168. 18p.
Doaj

1.9 m

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 31 Oct 2021 06:00 UTC