Overall Red alert Tropical Cyclone for FREDDY-23
in Mozambique, Madagascar
18 Feb 2023 06 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 HWRF
Exposed countries Mauritius, Reunion
Exposed population No people in Category 1 or higher
Maximum wind speed 205 km/h
Maximum storm surge 0.3 m (18 Feb 12:00 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
HWRF Current 205 km/h 0.3 m 255 mm 0.5
HWRF Overall 263 km/h 0.7 m 1685 mm 1.5

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

TOP

Wind



Wind exposed population - AoIs

Estimations based on the bulletin of 18 Feb 2023 06:00 UTC
CategoryCountryPopulation 
Tropical StormMauritius, Reunion1,080,171
+
Mauritius558,124 
Reunion522,046 

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 83 - - - - - - -
GREEN 2 06 Feb 2023 12:00 101 - - - - - - -
GREEN 3 06 Feb 2023 18:00 119 - - - - - - -
GREEN 4 07 Feb 2023 00:00 166 - - - - - - -
GREEN 5 07 Feb 2023 06:00 151 - - - - - - -
GREEN 6 07 Feb 2023 12:00 176 - - - - - - -
GREEN 7 07 Feb 2023 18:00 202 - - - - - - -
GREEN 8 08 Feb 2023 00:00 176 - - - - - - -
GREEN 9 08 Feb 2023 06:00 212 - - - - - - -
GREEN 10 08 Feb 2023 12:00 151 - - - - - - -
GREEN 11 08 Feb 2023 18:00 140 - - - - - - -
GREEN 12 09 Feb 2023 00:00 140 - - - - - - -
GREEN 13 09 Feb 2023 06:00 112 - - - - - - -
GREEN 14 09 Feb 2023 12:00 104 - - - - - - -
GREEN 15 09 Feb 2023 18:00 97 - - - - - - -
GREEN 16 10 Feb 2023 00:00 108 - - - - - - -
GREEN 17 10 Feb 2023 06:00 151 - - - - - - -
GREEN 18 10 Feb 2023 12:00 137 - - - - - - -
GREEN 19 10 Feb 2023 18:00 137 - - - - - - -
GREEN 20 11 Feb 2023 00:00 166 - - - - - - -
GREEN 21 11 Feb 2023 06:00 176 - - - - - - -
GREEN 22 11 Feb 2023 12:00 202 - - - - - - -
GREEN 23 11 Feb 2023 18:00 220 - - - - - - -
GREEN 24 12 Feb 2023 00:00 220 - - - - - - -
GREEN 25 12 Feb 2023 06:00 191 - - - - - - -
GREEN 26 12 Feb 2023 12:00 180 - - - - - - -
GREEN 27 12 Feb 2023 18:00 202 - - - - - - -
GREEN 28 13 Feb 2023 00:00 198 - - - - - - -
GREEN 29 13 Feb 2023 06:00 166 - - - - - - -
GREEN 30 13 Feb 2023 12:00 158 - - - - - - -
GREEN 31 13 Feb 2023 18:00 155 - - - - - - -
GREEN 32 14 Feb 2023 00:00 148 - - - - - - -
GREEN 33 14 Feb 2023 06:00 155 - - - - - - -
GREEN 34 14 Feb 2023 12:00 169 - - - - - - -
GREEN 35 14 Feb 2023 18:00 191 - - - - - - -
GREEN 36 15 Feb 2023 00:00 205 - - - - - - -
GREEN 37 15 Feb 2023 06:00 223 - - - - - - -
GREEN 38 15 Feb 2023 12:00 234 - - - - - - -
GREEN 39 15 Feb 2023 18:00 245 - - - - - - -
GREEN 40 16 Feb 2023 00:00 245 - - - - - - -
GREEN 41 16 Feb 2023 06:00 256 - - - - - - -
GREEN 42 16 Feb 2023 12:00 227 - - - - - - -
GREEN 43 16 Feb 2023 18:00 230 - - - - - - -
GREEN 44 17 Feb 2023 00:00 223 - - - - - - -
GREEN 45 17 Feb 2023 06:00 220 - - - - - - -
GREEN 46 17 Feb 2023 12:00 220 - - - - - - -
GREEN 47 17 Feb 2023 18:00 216 - - - - - - -
GREEN 48 18 Feb 2023 00:00 223 - - - - - - -
GREEN 49 18 Feb 2023 06:00 216 -
- - - - - Mauritius, Reunion
Download:





Impact estimation for the next 72h
TOP

Rainfall

1685 mm

Up to 20 thousand can be affected by rain higher than 100mm (see SSHS)





Rain exposed population - AoIs

Estimations based on the bulletin of 18 Feb 2023 06:00 UTC
LevelCountryPopulation 
250-500 mmReunion288 
100-250 mmReunion23,861 
50-100 mmMauritius, Reunion409,267
+
Mauritius384,833 
Reunion24,433 

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 06:00 253 - - - - - - -
Blue 2 06 Feb 2023 12:00 188 - - - - - - -
Blue 3 06 Feb 2023 18:00 210 - - - - - - -
Blue 4 07 Feb 2023 00:00 189 - - - - - - -
Blue 5 07 Feb 2023 06:00 242 - - - - - - -
Blue 6 07 Feb 2023 12:00 340 - - - - - - -
Blue 7 07 Feb 2023 18:00 336 - - - - - - -
Blue 8 08 Feb 2023 00:00 284 - - - - - - -
Blue 9 08 Feb 2023 06:00 340 - - - - - - -
Blue 10 08 Feb 2023 12:00 307 - - - - - - -
Blue 11 08 Feb 2023 18:00 257 - - - - - - -
Blue 12 09 Feb 2023 00:00 164 - - - - - - -
Blue 13 09 Feb 2023 06:00 157 - - - - - - -
Blue 14 09 Feb 2023 12:00 148 - - - - - - -
Blue 15 09 Feb 2023 18:00 144 - - - - - - -
Blue 16 10 Feb 2023 00:00 159 - - - - - - -
Blue 17 10 Feb 2023 06:00 341 - - - - - - -
Blue 18 10 Feb 2023 12:00 152 - - - - - - -
Blue 19 10 Feb 2023 18:00 197 - - - - - - -
Blue 20 11 Feb 2023 00:00 292 - - - - - - -
Blue 21 11 Feb 2023 06:00 291 - - - - - - -
Blue 22 11 Feb 2023 12:00 333 - - - - - - -
Blue 23 11 Feb 2023 18:00 421 - - - - - - -
Blue 24 12 Feb 2023 00:00 386 - - - - - - -
Blue 25 12 Feb 2023 06:00 310 - - - - - - -
Blue 26 12 Feb 2023 12:00 332 - - - - - - -
Blue 27 12 Feb 2023 18:00 387 - - - - - - -
Blue 28 13 Feb 2023 00:00 271 - - - - - - -
Blue 29 13 Feb 2023 06:00 207 - - - - - - -
Blue 30 13 Feb 2023 12:00 218 - - - - - - -
Blue 31 13 Feb 2023 18:00 180 - - - - - - -
Blue 32 14 Feb 2023 00:00 157 - - - - - - -
Blue 33 14 Feb 2023 06:00 180 - - - - - - -
Blue 34 14 Feb 2023 12:00 154 - - - - - - -
Blue 35 14 Feb 2023 18:00 246 - - - - - - -
Blue 36 15 Feb 2023 00:00 252 - - - - - - -
Blue 37 15 Feb 2023 06:00 277 - - - - - - -
Blue 38 15 Feb 2023 12:00 302 - - - - - - -
Blue 39 15 Feb 2023 18:00 300 - - - - - - -
Blue 40 16 Feb 2023 00:00 259 - - - - - - -
Blue 41 16 Feb 2023 06:00 228 - - - - - - -
Blue 42 16 Feb 2023 12:00 246 - - - - - - -
Blue 43 16 Feb 2023 18:00 239 - - - - - - -
Blue 44 17 Feb 2023 00:00 225 - - - - - - -
Blue 45 17 Feb 2023 06:00 229 - - - - - - -
Blue 46 17 Feb 2023 12:00 226 - - - - - - -
Blue 47 17 Feb 2023 18:00 197 - - - - - - -
Blue 48 18 Feb 2023 00:00 265 - - - - - - -
Blue 49 18 Feb 2023 06:00 390 20 thousand
- - - Mauritius, Reunion




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

0.3 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 18 Feb 2023 06:00 UTC