Overall Orange Tropical Cyclone alert for GAMANE-24 in Madagascar from 25 Mar 2024 18:00 UTC to 28 Mar 2024 18:00 UTC

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 Orange alert Tropical Cyclone for GAMANE-24

in Madagascar

28 Mar 2024 18 UTC

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Meteorological source:

WMO-RSMC La Réunion
Primary source
GDACS JTWC

Impact Single TC

Impact based on all weather systems in the area

Impact

Tropical Cyclone GAMANE-24 can have a medium humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source	GDACS
Exposed countries	Madagascar
Exposed population	150 thousand in Category 1 or higher
Maximum wind speed	167 km/h
Maximum storm surge	0.4 m (27 Mar 02:00 UTC)
Vulnerability	High (Madagascar)
Landfall	between 28 Mar 2024 12:00 - 28 Mar 2024 18:00 in 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
Current	46 km/h	0.1 m	n.a.	0.5
Overall	167 km/h	0.4 m	n.a.	1.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track) based on GDACS impact

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Wind

46 km/h Current Max.

Up to 1.6 million 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	26 Mar 2024 00:00	148	2.5 million	180 thousand	Madagascar
2	26 Mar 2024 12:00	157	3.6 million	310 thousand	Madagascar
3	27 Mar 2024 00:00	167	3.7 million	470 thousand	Madagascar
4	27 Mar 2024 12:00	102	4.4 million	150 thousand	Madagascar
5	28 Mar 2024 00:00	83	4.7 million	150 thousand	Madagascar
6	28 Mar 2024 12:00	65	1.6 million	150 thousand	Madagascar
7	28 Mar 2024 18:00	46	1.6 million	150 thousand	Madagascar

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	26 Mar 2024 00:00	Tropical storm	65	no people	690000 people	-12.7, 50.8
2	26 Mar 2024 12:00	Tropical storm	102	no people	180000 people	-12.5, 50.7
3	27 Mar 2024 00:00	Category 2	167	160000 people	1.2 million people	-12.9, 50.1
4	27 Mar 2024 12:00	Tropical storm	102	no people	1.4 million people	-13.3, 49.2	Madagascar
5	28 Mar 2024 00:00	Tropical storm	74	no people	2.5 million people	-13.9, 48.8	Madagascar
6	28 Mar 2024 12:00	Tropical depression	56	no people	no people	-14.1, 47.6
7	28 Mar 2024 18:00	Tropical depression	46	no people	no people	-14.4, 47.8	Madagascar
7	29 Mar 2024 06:00	Tropical depression	37	no people	no people	-15.3, 49	Madagascar

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
Madagascar	1.4 million people

Provinces

Region Province	Country	Population in Tropical Storm or higher strength
Mahajanga	Madagascar	180000 people
Antsiranana	Madagascar	1.2 million people

Populated places

Name	Region Province	Country	City class	Population
Ambanja	Antsiranana	Madagascar	City	30000 people
Ambilobe	Antsiranana	Madagascar	City	14000 people
Vohemar	Antsiranana	Madagascar	City	-
Antseranana	Antsiranana	Madagascar	City	-

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)
Bealanana	WBE	1120				0
Ambanja	IVA	11	Civ.	Unpaved	No	3100
Nosy Be Fascene	NOS	10	Civ.	Paved	No	7100
Ampampamena		15				0
Ambilobe Mahavavy	AMB	22	Civ.	Paved	No	4900
Vohemar	VOH	6	Civ.	Paved	No	4200
Antsiranana Arrachart	DIE	114	Civ.	Paved	No	4900

Ports

Name	LOCODE	Country
Maromandia		Madagascar
Nossi-Be	MGNOS	Madagascar
Port St. Louis	MGPSL	Madagascar
Vohemar		Madagascar
Cap Diego		Madagascar
Antsiranana	MGDIE	Madagascar

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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

0.4 m

The maximum Storm surge height is 0.4m in Andringahely, Madagascar. This height is estimated for 27 Mar 2024 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 (115 locations). Calculation based on advisory number 6 of 28 Mar 2024 12:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	27 Mar 2024 02:00	Andringahely	Madagascar	0.4
	28 Mar 2024 04:00	Manehoko	Madagascar	0.3
	28 Mar 2024 09:00	Maromokotra	Madagascar	0.3
	27 Mar 2024 14:00	Fadrina	Madagascar	0.3
	26 Mar 2024 02:00	Manambia	Madagascar	0.3
	26 Mar 2024 02:00	Anantoraka	Madagascar	0.3
	27 Mar 2024 03:00	Ampisikanana	Madagascar	0.3
	28 Mar 2024 06:00	Mailakapasy	Madagascar	0.3
	28 Mar 2024 15:00	Madirotelo	Madagascar	0.3
	27 Mar 2024 22:00	Antanimandry	Madagascar	0.3
	27 Mar 2024 22:00	Ambodibonara	Madagascar	0.3
	27 Mar 2024 22:00	Tanambao	Madagascar	0.3
	27 Mar 2024 22:00	Anjabe	Madagascar	0.3
	27 Mar 2024 22:00	Andranomena	Madagascar	0.3
	26 Mar 2024 02:00	Voloina	Madagascar	0.3
	26 Mar 2024 02:00	Maroantsetra	Madagascar	0.3
	27 Mar 2024 22:00	Andranofotsy	Madagascar	0.3
	26 Mar 2024 02:00	Andranofotsy	Madagascar	0.2
	28 Mar 2024 09:00	Anorotsangana	Madagascar	0.2
	28 Mar 2024 04:00	Ambato	Madagascar	0.2
	28 Mar 2024 04:00	Antanamazava	Madagascar	0.2
	28 Mar 2024 04:00	Ambatomainty	Madagascar	0.2
	27 Mar 2024 22:00	Bobasakoa	Madagascar	0.2
	26 Mar 2024 02:00	Mahalevona	Madagascar	0.2
	28 Mar 2024 14:00	Andrafialava	Madagascar	0.2
	27 Mar 2024 10:00	Ankazomalemy	Madagascar	0.2
	28 Mar 2024 15:00	Bevoay	Madagascar	0.2
	26 Mar 2024 02:00	Rantabe	Madagascar	0.2
	28 Mar 2024 05:00	Anjiabe	Madagascar	0.2
	28 Mar 2024 06:00	Antsahampano	Madagascar	0.2
	28 Mar 2024 15:00	Marokitrana	Madagascar	0.2
	26 Mar 2024 02:00	Maintimbato	Madagascar	0.2
	26 Mar 2024 02:00	Ambanizana	Madagascar	0.2
	27 Mar 2024 22:00	Ambatobe	Madagascar	0.2
	27 Mar 2024 06:00	Lokia	Madagascar	0.2
	26 Mar 2024 02:00	Benjana	Madagascar	0.2
	28 Mar 2024 07:00	Ambaliha	Madagascar	0.2
	28 Mar 2024 14:00	Bejongoro	Madagascar	0.2
	28 Mar 2024 15:00	Ampandrano	Madagascar	0.2
	28 Mar 2024 15:00	Mandrony	Madagascar	0.2
	28 Mar 2024 15:00	Maromanjo	Madagascar	0.2
	28 Mar 2024 15:00	Andamoty	Madagascar	0.2
	28 Mar 2024 15:00	Ampiambesa	Madagascar	0.2
	28 Mar 2024 15:00	Antetezampolaka	Madagascar	0.2
	28 Mar 2024 15:00	Maromandia	Madagascar	0.2
	28 Mar 2024 04:00	Andriana	Madagascar	0.2
	28 Mar 2024 04:00	Nosy Faly	Madagascar	0.2
	26 Mar 2024 02:00	Anoromby	Madagascar	0.2
	26 Mar 2024 02:00	Fananehana	Madagascar	0.2
	26 Mar 2024 02:00	Tampolo	Madagascar	0.2
	26 Mar 2024 01:00	Ampasina	Madagascar	0.2
	26 Mar 2024 02:00	Soanierana Ivongo	Madagascar	0.2
	26 Mar 2024 02:00	Andrangazaha	Madagascar	0.2
	26 Mar 2024 02:00	Antalavia	Madagascar	0.2
	27 Mar 2024 07:00	Ilomotro	Madagascar	0.2
	27 Mar 2024 07:00	Andohonko	Madagascar	0.2
	26 Mar 2024 01:00	Analanampotsy	Madagascar	0.2
	26 Mar 2024 02:00	Manakalana	Madagascar	0.2
	26 Mar 2024 02:00	Manambolosy	Madagascar	0.2
	26 Mar 2024 01:00	Mahavanona	Madagascar	0.2
	26 Mar 2024 01:00	Antakobola	Madagascar	0.2
	28 Mar 2024 07:00	Andranira	Madagascar	0.2
	28 Mar 2024 05:00	Ambatoxavavy	Madagascar	0.1
	28 Mar 2024 05:00	Andrafia	Madagascar	0.1
	26 Mar 2024 01:00	Ampasimbe	Madagascar	0.1
	26 Mar 2024 02:00	Manompana	Madagascar	0.1
	26 Mar 2024 02:00	Fahambahy	Madagascar	0.1
	26 Mar 2024 02:00	Tampolo	Madagascar	0.1
	26 Mar 2024 02:00	Mananara	Madagascar	0.1
	28 Mar 2024 07:00	Antsahabe	Madagascar	0.1
	28 Mar 2024 07:00	Ambodizaotra	Madagascar	0.1
	28 Mar 2024 03:00	Ampombilava	Madagascar	0.1
	27 Mar 2024 09:00	Ambanisanjo	Madagascar	0.1
	26 Mar 2024 02:00	Fandrarazana	Madagascar	0.1
	26 Mar 2024 02:00	Rantranavona	Madagascar	0.1
	26 Mar 2024 01:00	Fenerive	Madagascar	0.1
	28 Mar 2024 10:00	Antananabe	Madagascar	0.1
	28 Mar 2024 08:00	Anjiamalandy	Madagascar	0.1
	28 Mar 2024 00:00	Ambaramidada	Madagascar	0.1
	28 Mar 2024 00:00	Antanifatsy	Madagascar	0.1
	27 Mar 2024 04:00	Ambatoharanana	Madagascar	0.1
	26 Mar 2024 02:00	Lohatrozona	Madagascar	0.1
	26 Mar 2024 03:00	Fampotabe	Madagascar	0.1
	26 Mar 2024 02:00	Andilamboahangy	Madagascar	0.1
	28 Mar 2024 00:00	Antsikafoka	Madagascar	0.1
	28 Mar 2024 00:00	Fararano	Madagascar	0.1
	28 Mar 2024 00:00	Antsorokaka	Madagascar	0.1
	26 Mar 2024 02:00	Vatobe	Madagascar	0.1
	27 Mar 2024 03:00	Vohemar	Madagascar	0.1
	26 Mar 2024 02:00	Ivontaka	Madagascar	0.1
	26 Mar 2024 02:00	Seranambe	Madagascar	0.1
	26 Mar 2024 02:00	Antanetilava	Madagascar	0.1
	26 Mar 2024 02:00	Manambato	Madagascar	0.1
	26 Mar 2024 02:00	Antanambe	Madagascar	0.1
	28 Mar 2024 06:00	Dzamandzar	Madagascar	0.1
	28 Mar 2024 00:00	Mahambo	Madagascar	0.1
	27 Mar 2024 23:00	Ampanakana	Madagascar	0.1
	26 Mar 2024 02:00	Vohilava	Madagascar	0.1
	26 Mar 2024 02:00	Ambodifototra	Madagascar	0.1
	26 Mar 2024 02:00	Lonkintsy	Madagascar	0.1
	26 Mar 2024 02:00	Lokintsy	Madagascar	0.1
	27 Mar 2024 03:00	Antanambao	Madagascar	0.1
	26 Mar 2024 02:00	Tanambe	Madagascar	0.1
	27 Mar 2024 03:00	Andrafiamadinika	Madagascar	0.1
	26 Mar 2024 02:00	Ambodiatafa	Madagascar	0.1
	26 Mar 2024 02:00	Ambatofitarafana	Madagascar	0.1
	26 Mar 2024 03:00	Ambatoharana	Madagascar	0.1
	26 Mar 2024 03:00	Vinanivao	Madagascar	0.1
	26 Mar 2024 03:00	Anaovandrano	Madagascar	0.1
	26 Mar 2024 03:00	Anjanozana	Madagascar	0.1
	28 Mar 2024 07:00	Ambariomena	Madagascar	0.1
	28 Mar 2024 07:00	Ampohana	Madagascar	0.1
	30 Mar 2024 13:00	Ampasibe	Madagascar	0.1
	26 Mar 2024 02:00	Ambodimanga	Madagascar	0.1
	30 Mar 2024 12:00	Ananalava	Madagascar	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.