Overall Red alert Tropical Cyclone for FREDDY-23
in Mozambique, Madagascar
06 Feb 2023 18 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

Tropical Cyclone FREDDY-23 can have a high humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GFS
Exposed countries
Exposed population No people in Category 1 or higher
Maximum wind speed 104 km/h
Maximum storm surge 0.4 m (06 Feb 22:30 UTC)
Vulnerability High (Madagascar)

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 104 km/h 0.4 m 190 mm 0.5
GFS Overall 205 km/h 0.7 m 1068 mm 0.5

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

TOP

Wind

205 km/h

No people by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

No exposed population (in Tropical Storm or higher) based on the bulletin of 06 Feb 2023 18:00 UTC

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 06 Feb 2023 06:00 101 - - - - - - -
GREEN 2 06 Feb 2023 12:00 79 - - - - - - -
GREEN 3 06 Feb 2023 18:00 169 - - - - - - -
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 06 Feb 2023 18:00 UTC
LevelCountryPopulation 
100-250 mmIndonesia, Madagascar, Eswatini, South Africa3,053,563
+
Indonesia2,805,267 
Madagascar39,461 
South Africa149,228 
Eswatini59,606 
50-100 mmIndonesia, Democratic Republic of the Congo, Tanzania, Mozambique, Zambia, Madagascar, Malawi, Botswana, South Africa, Eswatini, Lesotho35,798,642
+
Indonesia22,707,709 
Democratic Republic of the Congo43,434 
Tanzania390,989 
Mozambique1,166,685 
Zambia1,323,672 
Madagascar870,460 
Malawi3,215,054 
Botswana155 
South Africa4,706,728 
Eswatini722,422 
Lesotho651,329 

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 06 Feb 2023 06:00 195 -
- - - - - Indonesia
Blue 2 06 Feb 2023 12:00 154 -
- - - - - Madagascar
Blue 3 06 Feb 2023 18:00 651 3.1 million
- - - - Indonesia, Democratic Republic of the Congo, Tanzania, Mozambique, Zambia, Madagascar, Malawi, Botswana, South Africa, Eswatini, Lesotho




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

0.4 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 06 Feb 2023 18:00 UTC