Overall Green alert Tropical Cyclone for IRENE-23
in Vanuatu, New Caledonia
20 Jan 2023 00 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

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

Meteorological source GFS
Exposed countries Vanuatu, New Caledonia, Australia
Exposed population No people in Category 1 or higher
Maximum wind speed 104 km/h
Maximum storm surge 0.9 m (19 Jan 16:00 UTC)
Vulnerability Medium (New Caledonia)

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 0.9 m 591 mm 0.5
GFS Overall 104 km/h 0.9 m 591 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 150 thousand can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 20 Jan 2023 00:00 UTC
CategoryCountryPopulation 
Tropical StormVanuatu, New Caledonia, Australia147,299
+
Vanuatu147,294 
New Caledonia02 
Australia01 

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 18 Jan 2023 00:00 86 - - - - - - -
GREEN 2 18 Jan 2023 06:00 90 - - - - - - -
GREEN 3 18 Jan 2023 12:00 97 -
- - - - - Vanuatu
GREEN 4 18 Jan 2023 18:00 104 -
- - - - - Vanuatu
GREEN 5 19 Jan 2023 00:00 97 -
- - - - - Vanuatu, New Caledonia
GREEN 6 19 Jan 2023 06:00 97 -
- - - - - Vanuatu, New Caledonia
GREEN 7 19 Jan 2023 12:00 79 - - - - - - -
GREEN 8 19 Jan 2023 18:00 79 - - - - - - -
GREEN 9 20 Jan 2023 00:00 90 -
- - - - - Australia
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 20 Jan 2023 00:00 UTC
LevelCountryPopulation 
250-500 mmVanuatu1,716 
100-250 mmPapua New Guinea, Vanuatu, New Caledonia269,323
+
Papua New Guinea43,598 
Vanuatu197,777 
New Caledonia27,947 
50-100 mmPapua New Guinea, Solomon Islands, Tokelau, Vanuatu, Samoa, Fiji, New Caledonia, Australia1,717,789
+
Papua New Guinea928,988 
Solomon Islands12,806 
Tokelau451 
Vanuatu65,150 
Samoa7,892 
Fiji299,727 
New Caledonia235,118 
Australia167,653 

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 18 Jan 2023 00:00 171 - - - - - - -
Blue 2 18 Jan 2023 06:00 166 - - - - - - -
Blue 3 18 Jan 2023 12:00 205 Few people
- - - - Vanuatu
Blue 4 18 Jan 2023 18:00 200 Few people
- - - - Vanuatu
Blue 5 19 Jan 2023 00:00 199 -
- - - - - Vanuatu
Blue 6 19 Jan 2023 06:00 147 -
- - - - - Vanuatu
Blue 7 19 Jan 2023 12:00 131 -
- - - - - Vanuatu
Blue 8 19 Jan 2023 18:00 179 -
- - - - - Papua New Guinea
Blue 9 20 Jan 2023 00:00 519 10 thousand
- - - - Papua New Guinea, Vanuatu, New Caledonia, Australia




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

0.9 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

Estimations based on the bulletin of 20 Jan 2023 00:00 UTC
LevelCountryPopulation 
0.5 - 1.0 mFiji, Australia, New Zealand29,046
+
Fiji383 
Australia3,913 
New Zealand24,749 
0.25 - 0.5 mPapua New Guinea, Solomon Islands, Fiji, Australia, New Caledonia, New Zealand123,706
+
Papua New Guinea54,561 
Solomon Islands198 
Fiji3,299 
Australia33,352 
New Caledonia3,153 
New Zealand29,140 

Storm Surge Exposed locations

Calculation based on the bulletin of 20 Jan 2023 00:00 UTC