Overall Green Tropical Cyclone alert for ILSA-23 in Australia from 08 Apr 2023 18:00 UTC to 11 Apr 2023 06:00 UTC

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

Overall Green alert Tropical Cyclone for ILSA-23

in Australia

11 Apr 2023 06 UTC

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to select bulletin time

Meteorological source:

GDACS JTWC

Impact Single TC

Impact based on all weather systems in the area

Impact

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

Meteorological source	GDACS
Exposed countries	Australia
Exposed population	3 thousand in Category 1 or higher
Maximum wind speed	241 km/h
Maximum storm surge	0.7 m (08 Apr 23:00 UTC)
Vulnerability	Low (Australia)
Landfall	between 13 Apr 2023 06:00 - 14 Apr 2023 06:00 in Australia

GDACS Score

GDACS score for Tropical Cyclones is 0.5 (GREEN Level), 1.5 (ORANGE Level), 2.5 (RED Level)
For more info on GDACS core click here.

	Wind	Storm surge	Rainfall	GDACS score
Current	222 km/h	0.5 m	n.a.	0.5
Overall	241 km/h	0.7 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

222 km/h Current Max.

Up to <1000 people in Category 1 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	08 Apr 2023 18:00	259	20 thousand	2 thousand	Australia
2	09 Apr 2023 00:00	241	20 thousand	2 thousand	Australia
4	09 Apr 2023 12:00	241	20 thousand	Few people	Australia
5	09 Apr 2023 18:00	241	20 thousand	2 thousand	Australia
6	10 Apr 2023 00:00	231	20 thousand	1 thousand	Australia
8	10 Apr 2023 12:00	213	3 thousand	Few people	Australia
9	10 Apr 2023 18:00	222	4 thousand	Few people	Australia
10	11 Apr 2023 00:00	241	2 thousand	No people	Australia
11	11 Apr 2023 06:00	222	40 thousand	Few people	Australia

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)	Countries
1	08 Apr 2023 18:00	Tropical storm	65	no people	no people	-11.3, 128.2
2	09 Apr 2023 00:00	Tropical storm	74	no people	no people	-11.9, 127.2
4	09 Apr 2023 12:00	Tropical storm	83	no people	no people	-12.8, 125.1
5	09 Apr 2023 18:00	Tropical storm	83	no people	no people	-13.3, 124.2
6	10 Apr 2023 00:00	Tropical storm	93	no people	no people	-13.6, 123.4
8	10 Apr 2023 12:00	Tropical storm	83	no people	no people	-13.4, 122.5
9	10 Apr 2023 18:00	Tropical storm	93	no people	no people	-13.7, 122.1
10	11 Apr 2023 00:00	Tropical storm	93	no people	no people	-14, 121.4
11	11 Apr 2023 06:00	Tropical storm	102	no people	no people	-14.3, 121.8
11	11 Apr 2023 18:00	Category 1	130	no people	no people	-15.1, 121
11	12 Apr 2023 06:00	Category 2	157	no people	no people	-15.8, 120.3
11	12 Apr 2023 18:00	Category 3	194	no people	no people	-16.7, 119.8
11	13 Apr 2023 06:00	Category 4	222	<1000 people	16000 people	-17.9, 119.9
11	14 Apr 2023 06:00	Category 1	130	<1000 people	28000 people	-20.9, 124.3	Australia
11	15 Apr 2023 06:00	Tropical depression	56	no people	no people	-23.5, 134.9	Australia

Actual track of the current bulletin

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

Download:

Exposed population - AoIs

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

Countries

Country	Population in Category 1 or higher strength
Australia	<1000 people

Provinces

Region Province	Country	Population in Category 1 or higher strength
Western Australia	Australia	<1000 people
Northern Territory	Australia	<1000 people

Critical infrastructure

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

Ports

Name	LOCODE	Country
Lagrange		Coral Sea Islands

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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

0.7 m

The maximum Storm surge height is 0.7m in Pulaukumbang, Indonesia. This height is estimated for 08 Apr 2023 23:00 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 (127 locations). Calculation based on advisory number 1 of 08 Apr 2023 18:00:00 UTC. (Simulation using 0.5 minute resolution)

Level	Date (UTC)	Name	Country	Storm surge height (m)
	08 Apr 2023 23:00	Pulaukumbang	Indonesia	0.7
	08 Apr 2023 23:00	Sukadana	Indonesia	0.6
	08 Apr 2023 23:00	Siduk	Indonesia	0.6
	08 Apr 2023 23:00	Sungaitulak	Indonesia	0.6
	08 Apr 2023 23:00	Soengaitoelak	Indonesia	0.5
	08 Apr 2023 23:00	Satai	Indonesia	0.5
	11 Apr 2023 11:00	Pender	Australia	0.5
	08 Apr 2023 23:00	Minjilang	Australia	0.4
	08 Apr 2023 22:00	Telukawah	Indonesia	0.4
	09 Apr 2023 00:00	Sanindara	Indonesia	0.4
	11 Apr 2023 12:00	Derby	Australia	0.4
	08 Apr 2023 22:00	Sabui	Indonesia	0.4
	09 Apr 2023 01:00	Naoer	Indonesia	0.4
	12 Apr 2023 18:00	Condon	Australia	0.4
	09 Apr 2023 00:00	Pagatan	Indonesia	0.3
	09 Apr 2023 00:00	Agatebi	Indonesia	0.3
	09 Apr 2023 01:00	Sajengga	Indonesia	0.3
	09 Apr 2023 17:00	Larrakeyah	Australia	0.3
	08 Apr 2023 22:00	Koealasapo	Indonesia	0.3
	08 Apr 2023 23:00	Bapuju	Indonesia	0.3
	08 Apr 2023 23:00	Bahaur	Indonesia	0.3
	08 Apr 2023 23:00	Kualalupak	Indonesia	0.3
	08 Apr 2023 23:00	Aluhaluh	Indonesia	0.3
	08 Apr 2023 23:00	Tambakkarangan	Indonesia	0.3
	08 Apr 2023 23:00	Tabanio	Indonesia	0.3
	08 Apr 2023 23:00	Bawahalajung	Indonesia	0.3
	11 Apr 2023 06:00	Kollan I	Australia	0.3
	09 Apr 2023 00:00	Sakaoeni	Indonesia	0.3
	09 Apr 2023 17:00	Fannie Bay	Australia	0.3
	09 Apr 2023 17:00	Parap	Australia	0.3
	09 Apr 2023 17:00	Darwin	Australia	0.3
	09 Apr 2023 17:00	Ludmilla	Australia	0.3
	09 Apr 2023 17:00	Bagot	Australia	0.3
	08 Apr 2023 23:00	Pelang	Indonesia	0.3
	08 Apr 2023 23:00	Pesaguan	Indonesia	0.3
	09 Apr 2023 00:00	Setiroek	Indonesia	0.3
	09 Apr 2023 17:00	Nightcliff	Australia	0.3
	08 Apr 2023 23:00	Ketapang	Indonesia	0.3
	08 Apr 2023 21:00	Semisir	Indonesia	0.3
	08 Apr 2023 23:00	Sungaitapah	Indonesia	0.3
	09 Apr 2023 00:00	Pagetan	Indonesia	0.3
	12 Apr 2023 15:00	Broome	Australia	0.3
	09 Apr 2023 01:00	Aoem	Indonesia	0.3
	09 Apr 2023 01:00	Moegoetira	Indonesia	0.3
	12 Apr 2023 16:00	Thangoo	Australia	0.3
	09 Apr 2023 01:00	Tambani	Indonesia	0.3
	08 Apr 2023 23:00	Mutua	Indonesia	0.3
	08 Apr 2023 23:00	Tandjoengselaka	Indonesia	0.3
	08 Apr 2023 22:00	Loentji	Indonesia	0.2
	12 Apr 2023 15:00	Waterbank	Australia	0.2
	09 Apr 2023 01:00	Kamboeriami	Indonesia	0.2
	09 Apr 2023 01:00	Kinara	Indonesia	0.2
	09 Apr 2023 19:00	Soengaibali	Indonesia	0.2
	09 Apr 2023 00:00	Pagarantimun	Indonesia	0.2
	12 Apr 2023 15:00	Kennedys Cottage	Australia	0.2
	09 Apr 2023 23:00	Leanyer	Australia	0.2
	09 Apr 2023 02:00	Tanam	Indonesia	0.2
	08 Apr 2023 21:00	Pagatan	Indonesia	0.2
	08 Apr 2023 21:00	Salinau	Indonesia	0.2
	08 Apr 2023 21:00	Semaras	Indonesia	0.2
	08 Apr 2023 21:00	Okaoka	Indonesia	0.2
	08 Apr 2023 21:00	Tungkaranasam	Indonesia	0.2
	08 Apr 2023 23:00	Dolatanden	Indonesia	0.2
	08 Apr 2023 21:00	Teloekkapalpetjah	Indonesia	0.2
	09 Apr 2023 02:00	Pamandali	Indonesia	0.2
	09 Apr 2023 02:00	Tioro	Indonesia	0.2
	09 Apr 2023 02:00	Kembano	Indonesia	0.2
	09 Apr 2023 02:00	Tampo	Indonesia	0.2
	09 Apr 2023 02:00	Kolono	Indonesia	0.2
	09 Apr 2023 02:00	Napabalana	Indonesia	0.2
	09 Apr 2023 02:00	Rumba	Indonesia	0.2
	09 Apr 2023 02:00	Koroni	Indonesia	0.2
	09 Apr 2023 02:00	Bangbong	Indonesia	0.2
	09 Apr 2023 02:00	Roode Huk	Indonesia	0.2
	09 Apr 2023 02:00	Tuetue	Indonesia	0.2
	09 Apr 2023 02:00	Walue	Indonesia	0.2
	08 Apr 2023 23:00	Kandangan	Indonesia	0.2
	09 Apr 2023 02:00	Labuban-Tobelo	Indonesia	0.2
	09 Apr 2023 00:00	Batakam	Indonesia	0.2
	12 Apr 2023 18:00	East Lewis I	Australia	0.2
	08 Apr 2023 23:00	Pulaukutjing	Indonesia	0.2
	09 Apr 2023 02:00	Kaisweri	Indonesia	0.2
	09 Apr 2023 15:00	Kladar	Indonesia	0.2
	09 Apr 2023 15:00	Sabon	Indonesia	0.2
	09 Apr 2023 15:00	Tor	Indonesia	0.2
	09 Apr 2023 02:00	Numbulwar	Australia	0.2
	09 Apr 2023 11:00	Taroea Anim	Indonesia	0.2
	08 Apr 2023 20:00	Paparoe	Indonesia	0.2
	08 Apr 2023 20:00	Rori	Indonesia	0.2
	08 Apr 2023 20:00	Koeroedoe	Indonesia	0.2
	12 Apr 2023 18:00	Wickham	Australia	0.2
	12 Apr 2023 18:00	Point Samson	Australia	0.2
	12 Apr 2023 18:00	Cossack	Australia	0.2
	08 Apr 2023 23:00	Sawarangan	Indonesia	0.2
	09 Apr 2023 20:00	Sekapoeng	Indonesia	0.2
	09 Apr 2023 00:00	Segintong	Indonesia	0.2
	09 Apr 2023 01:00	Saga	Indonesia	0.2
	09 Apr 2023 16:00	Tapianbalai	Indonesia	0.2
	08 Apr 2023 20:00	Nhulunbuy	Australia	0.2
	08 Apr 2023 21:00	Boenati	Indonesia	0.2
	09 Apr 2023 02:00	Sege	Indonesia	0.2
	08 Apr 2023 20:00	Basada	Indonesia	0.1
	08 Apr 2023 20:00	Kobroor	Indonesia	0.1
	08 Apr 2023 20:00	Kedjabi	Indonesia	0.1
	08 Apr 2023 20:00	Rabal	Indonesia	0.1
	08 Apr 2023 20:00	Kangoerma	Indonesia	0.1
	09 Apr 2023 02:00	Alyangula	Australia	0.1
	08 Apr 2023 20:00	Karwai	Indonesia	0.1
	08 Apr 2023 20:00	Keojabi	Indonesia	0.1
	09 Apr 2023 02:00	Inanwatatan	Indonesia	0.1
	09 Apr 2023 02:00	Masara	Indonesia	0.1
	08 Apr 2023 23:00	Lakara	Indonesia	0.1
	08 Apr 2023 23:00	Toroboeloe	Indonesia	0.1
	09 Apr 2023 01:00	Tanisepta	Indonesia	0.1
	09 Apr 2023 01:00	Ranibo	Indonesia	0.1
	09 Apr 2023 01:00	Degen	Indonesia	0.1
	09 Apr 2023 05:00	Wan	Indonesia	0.1
	09 Apr 2023 05:00	Konerau	Indonesia	0.1
	09 Apr 2023 05:00	Pasirputih	Indonesia	0.1
	08 Apr 2023 23:00	Padang	Indonesia	0.1
	09 Apr 2023 00:00	Roliai	Indonesia	0.1
	09 Apr 2023 00:00	Tinangea	Indonesia	0.1
	09 Apr 2023 06:00	Komoran	Indonesia	0.1
	09 Apr 2023 10:00	Birab	Indonesia	0.1
	12 Apr 2023 18:00	Ah Chong I	Australia	0.1
	09 Apr 2023 05:00	Selemit	Indonesia	0.1
	09 Apr 2023 10:00	Otsjanep	Indonesia	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.