Overall Green Tropical Cyclone for COURTNEY-25 Off-shore from 24 Mar 2025 12:00 UTC to 25 Mar 2025 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 Tropical Cyclone for COURTNEY-25

Off-shore

Meteorological source:

GDACS JTWC
Primary source
WMO-RSMC La Réunion

Impact Single TC

Impact based on all weather systems in the area

Impact

Tropical Cyclone COURTNEY-25 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source	GDACS
Exposed countries
Exposed population	No people in Category 1 or higher
Maximum wind speed	231 km/h
Maximum storm surge	0.3 m (25 Mar 10:00 UTC)
Vulnerability	--

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	120 km/h	0.3 m	n.a.	0.5
Overall	231 km/h	0.3 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

120 km/h Current Max.

Up to no 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
1	24 Mar 2025 12:00	139	No people	No people
2	24 Mar 2025 18:00	111	No people	No people
3	25 Mar 2025 00:00	93	No people	No people
4	25 Mar 2025 06:00	120	No people	No people

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	24 Mar 2025 12:00	Tropical storm	65	no people	no people	-16.6, 111
2	24 Mar 2025 18:00	Tropical storm	65	no people	no people	-16.6, 110.5
3	25 Mar 2025 00:00	Tropical storm	65	no people	no people	-16.7, 110
4	25 Mar 2025 06:00	Tropical storm	74	no people	no people	-16.8, 109.1
4	25 Mar 2025 18:00	Tropical storm	83	no people	no people	-17.2, 107
4	26 Mar 2025 06:00	Tropical storm	83	no people	no people	-17.3, 104.8
4	26 Mar 2025 18:00	Tropical storm	83	no people	no people	-17, 102.8
4	27 Mar 2025 06:00	Tropical storm	83	no people	no people	-16.7, 100.8
4	28 Mar 2025 06:00	Tropical storm	93	no people	no people	-16.5, 96.3
4	29 Mar 2025 06:00	Tropical storm	102	no people	no people	-17.5, 91.8
4	30 Mar 2025 06:00	Category 1	120	no people	no people	-19, 88.3

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

Critical infrastructure

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

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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

0.3 m

The maximum Storm surge height is 0.3m in Wickham, Australia. This height is estimated for 25 Mar 2025 10:00 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 (20 locations). Calculation based on advisory number 4 of 25 Mar 2025 06:00:00 UTC. (Simulation using 0.5 minute resolution)

Level	Date (UTC)	Name	Country	Storm surge height (m)
	25 Mar 2025 10:00	Wickham	Australia	0.3
	25 Mar 2025 10:00	Point Samson	Australia	0.3
	25 Mar 2025 10:00	Cossack	Australia	0.3
	25 Mar 2025 11:00	Mardie	Australia	0.3
	25 Mar 2025 11:00	Learmonth	Australia	0.3
	25 Mar 2025 10:00	East Lewis I	Australia	0.2
	25 Mar 2025 11:00	Ah Chong I	Australia	0.2
	25 Mar 2025 13:00	Exmouth	Australia	0.2
	24 Mar 2025 17:00	Semarang	Indonesia	0.2
	24 Mar 2025 17:00	Wedung	Indonesia	0.2
	24 Mar 2025 17:00	Bugel	Indonesia	0.2
	24 Mar 2025 17:00	Karanggondang	Indonesia	0.2
	25 Mar 2025 20:00	Glenroy	Australia	0.2
	24 Mar 2025 16:00	Kedungmalang	Indonesia	0.2
	24 Mar 2025 19:00	Condon	Australia	0.2
	25 Mar 2025 07:00	Tipar	Indonesia	0.1
	24 Mar 2025 16:00	Karangroto	Indonesia	0.1
	24 Mar 2025 17:00	Kendal	Indonesia	0.1
	24 Mar 2025 17:00	Mangkang-Kulan	Indonesia	0.1
	24 Mar 2025 16:00	Jepara	Indonesia	0.1

Disclaimer - Copyright
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.