Overall Green Tropical Cyclone alert for IRENE-23 in Vanuatu, New Caledonia from 18 Jan 2023 00:00 UTC to 12:00

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve alerts, information exchange and coordination in the first phase after major sudden-onset disasters.

Overall Green alert Tropical Cyclone for IRENE-23

in Vanuatu, New Caledonia

18 Jan 2023 12 UTC

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to select bulletin time

Meteorological source:

GDACS JTWC

Impact Single TC

GFS
HWRF
ECMWF

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	GDACS
Exposed countries	Vanuatu, New Caledonia
Exposed population	No people in Category 1 or higher
Maximum wind speed	93 km/h
Maximum storm surge	0.2 m (19 Jan 02:00 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
Current	102 km/h	0.2 m	n.a.	0.5
Overall	93 km/h	0.2 m	n.a.	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track) based on GDACS impact

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Wind

102 km/h Current Max.

Up to 110000 people in Tropical Storm strength or higher (see SSHS)

Impact Timeline

N°	Date (UTC)	Max Winds (km/h)	Population in Tropical Storm or higher	Population in Cat 1. or higher	Countries
1	18 Jan 2023 00:00	93	160 thousand	No people	New Caledonia, Vanuatu
2	18 Jan 2023 06:00	102	130 thousand	No people	New Caledonia, Vanuatu
3	18 Jan 2023 12:00	102	110 thousand	No people	New Caledonia, Vanuatu

Bulletin Timeline

N°	Date (UTC)	Category (SSHS)	Max winds (km/h)	Population in Cat.1 or higher	Population in Tropical Storm or higher	Location (lat, lon)
1	18 Jan 2023 00:00	Tropical storm	65	no people	15000 people	-17.8, 161.5
2	18 Jan 2023 06:00	Tropical storm	74	no people	77000 people	-18, 163.3
3	18 Jan 2023 12:00	Tropical storm	93	no people	110000 people	-18.3, 165.3
3	19 Jan 2023 00:00	Tropical storm	102	no people	34000 people	-19.7, 169.1
3	19 Jan 2023 12:00	Tropical storm	102	no people	<1000 people	-21.9, 173.1
3	20 Jan 2023 00:00	Tropical storm	93	no people	no people	-24.2, 176.3
3	20 Jan 2023 12:00	Tropical storm	74	no people	no people	-26.3, 178.3
3	21 Jan 2023 12:00	Tropical depression	56	no people	no people	-29.5, 180

Actual track of the current bulletin

The alert for forecast greater than 3 days is limited to Orange level.

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Exposed population - AoIs

Exposed population in the potential affected countries, provinces and populated places

Countries

Country	Population in Tropical Storm or higher strength
New Caledonia	1000 people
Vanuatu	95000 people

Provinces

Region Province	Country	Population in Tropical Storm or higher strength
New Caledonia	New Caledonia	1000 people
Vanuatu	Vanuatu	95000 people

Populated places

Name	Region Province	Country	City class	Population
Port-Vila		Vanuatu	Capital	36000 people

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Name	IATA Code	Elevation (m)	Usage	Runway type	IFR	Runway Length (ft)
Belep	BMY	unknown				0
Port Vila Bauerfield	VLI	20	Civ.	Paved	Yes	8500
Wanaham	LIF	28	Civ.	Paved	No	3600
Dillons Bay	DLY	unknown				0
Ipota	IPA	unknown				0
White Grass		6	Civ.	Paved	Yes	5000
Tanna Island Tanna	TAH	unknown				0
Aniwa	AWD	unknown				0
Futuna Island	FTA	unknown				0

Ports

Name	LOCODE	Country
Port Vila	VUVLI	Vanuatu
Tana Island		Vanuatu
Aneityum Island		Vanuatu
Matthew Island		New Caledonia
Hunter Island		New Caledonia

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Rainfall

Rainfall accumulation of the past 24h, as detected by the Global Precipitation Measurement mission of NASA. For more information, see https://www.nasa.gov/mission_pages/GPM/main/index.html.

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StormSurge

0.2 m

The maximum Storm surge height is 0.2m in Isino, Vanuatu. This height is estimated for 19 Jan 2023 02:00 UTC .

The JRC has developed an experimental global storm surge model. 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.

Locations affected by Storm surge (31 locations). Calculation based on advisory number 3 of 18 Jan 2023 12:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	19 Jan 2023 02:00	Isino	Vanuatu	0.2
	19 Jan 2023 03:00	Anelghowhat	Vanuatu	0.2
	19 Jan 2023 00:00	Lenakel	Vanuatu	0.2
	19 Jan 2023 03:00	Umetch	Vanuatu	0.2
	19 Jan 2023 00:00	Yerou	Vanuatu	0.2
	19 Jan 2023 00:00	Loanatom	Vanuatu	0.2
	19 Jan 2023 01:00	Imareukak	Vanuatu	0.2
	19 Jan 2023 01:00	Yokopenan	Vanuatu	0.2
	19 Jan 2023 00:00	Isangel	Vanuatu	0.1
	19 Jan 2023 00:00	Loonelapeun	Vanuatu	0.1
	19 Jan 2023 01:00	White Sands	Vanuatu	0.1
	19 Jan 2023 01:00	Ireupuow	Vanuatu	0.1
	19 Jan 2023 00:00	Loounemeloupang	Vanuatu	0.1
	18 Jan 2023 23:00	Happy Land	Vanuatu	0.1
	18 Jan 2023 23:00	Umpon Mompu	Vanuatu	0.1
	19 Jan 2023 00:00	Loounimhapeun	Vanuatu	0.1
	19 Jan 2023 00:00	Imwareupo	Vanuatu	0.1
	19 Jan 2023 00:00	Waisisi	Vanuatu	0.1
	19 Jan 2023 01:00	Yeruareng	Vanuatu	0.1
	19 Jan 2023 01:00	Ombous	Vanuatu	0.1
	19 Jan 2023 02:00	Mohoun'gha	Vanuatu	0.1
	19 Jan 2023 02:00	Ipao	Vanuatu	0.1
	19 Jan 2023 00:00	Yawisaghuwi	Vanuatu	0.1
	19 Jan 2023 00:00	Laounalang	Vanuatu	0.1
	19 Jan 2023 00:00	Lowkahmal	Vanuatu	0.1
	19 Jan 2023 00:00	Ifo	Vanuatu	0.1
	19 Jan 2023 00:00	Lownepina	Vanuatu	0.1
	19 Jan 2023 01:00	Isaka	Vanuatu	0.1
	19 Jan 2023 01:00	Isavai	Vanuatu	0.1
	18 Jan 2023 23:00	Unpongkor	Vanuatu	0.1
	19 Jan 2023 02:00	Port Patrick	Vanuatu	0.1

Disclaimer
While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information.
The JRC is not responsible for any damage or loss resulting from the use of the information presented on this website.
The designations employed and the presentation of material on the map do not imply the expression of any opinion whatsoever on the part of the European Union concerning the legal status of any country, territory or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.