Overall Red alert Tropical Cyclone for IDA-21
in United States, Cuba
26 Aug 2021 12 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

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

Meteorological source ECMWF
Exposed countries Cuba, Cayman Islands
Exposed population No people in Category 1 or higher
Maximum wind speed 72 km/h
Maximum storm surge 0.2 m (26 Aug 22:30 UTC)
Vulnerability Low (Cuba)

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
ECMWF Current 72 km/h 0.2 m 163 mm 0.5
ECMWF Overall 180 km/h 3.1 m 598 mm 0.5

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

TOP

Wind

180 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 Aug 2021 12:00 UTC
CategoryCountryPopulation 
Tropical StormCuba, Cayman Islands889
+
Cuba779 
Cayman Islands110 

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 Aug 2021 00:00 61 - - - - - - -
GREEN 2 26 Aug 2021 12:00 94 -
- - - - - Cuba, Cayman Islands
Download:





Impact estimation for the next 72h
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Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 26 Aug 2021 12:00 UTC
LevelCountryPopulation 
100-250 mmUnited States, Cuba, Cayman Islands, Jamaica, Mexico, Honduras, Nicaragua, Colombia1,618,578
+
United States804,910 
Cuba556,194 
Mexico563 
Cayman Islands2,298 
Jamaica142,512 
Honduras61,300 
Nicaragua50,436 
Colombia361 
50-100 mmUnited States, Cuba, Mexico, Cayman Islands, Jamaica, Haiti, Guatemala, Honduras, El Salvador, Nicaragua, Colombia7,805,392
+
United States3,782,589 
Cuba589,492 
Mexico1,240,868 
Cayman Islands45,432 
Jamaica1,371,775 
Haiti159 
Guatemala252,819 
Honduras69,455 
El Salvador64,890 
Nicaragua386,616 
Colombia1,292 

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 Aug 2021 00:00 329 220 thousand
- - - United States, Jamaica, Mexico, Guatemala, Colombia
Blue 2 26 Aug 2021 12:00 264 1.6 million
- - - - United States, Cuba, Mexico, Cayman Islands, Jamaica, Haiti, Guatemala, Honduras, El Salvador, Nicaragua, Colombia




Impact estimation for the next 72h
TOP

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

0.2 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 26 Aug 2021 12:00 UTC