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Cyclone Gamane in Madagascar

Cyclone Gamane made landfall in Madagascar on 27 March, leaving 18 dead and affecting thousands of people.

The storm was originally forecast to pass by the northern coast of the country, but unexpectedly changed course on 27 March, crossing over Vohémar district in the early hours of the day and continuing across the north-eastern districts of the island. The slow-moving storm dissipated in the afternoon on 28 March.

Gamane brought heavy rain to the northern areas of Madagascar, and strong winds, causing floods and damage to infrastructure. It is estimated that more than 20,000 people were forced from their homes by the storm.

Related News and Resources

Type of Event:Storm - Cyclone, Floods
Location of Event:Madagascar
Date of Charter Activation:2024-03-29
Time of Charter Activation:13:38
Time zone of Charter Activation:UTC+03:00
Charter Requestor:Bureau National de Gestion des Risques et des Catastrophes (BNGRC)
Activation ID:870
Project Management:Battiston Stephanie (SERTIT)
Value Adding:Teodoro Hunger (UNITAR/UNOSAT)
Konstantin Homenkov (Geoniformation systems)
Dalia Laoubi (CSA)
NOAA VA (NOAA)
BUREAU NATIONAL DE GESTION DES RISQUES ET DES CATASTROPHES (BNGRC)
INPE
Camila Gonçalves dos Santos (UFRRJ)

Products

Area affected by landslides located between the municipalities of Amboditsoha, Ambohiby and Ankiweb, Madagascar

Copyright: copyright (2024) INPE

Information about the Product

Acquired: CBERS-4: 04/04/2024

Source: CBERS-4

Category: Reference Map

NOAA downscaled flood depth product over Analovana region

Copyright: NOAA/NPP-N20-N21
Map produced by SSEC

Information about the Product

Acquired: 01/04/2024

Source: NOAA

Category: Delineation Map

Preliminary satellite-derived flood assessment, Ambanja District, Diana Region, Madagascar
Download the full report

Copyright: © (2024) DigitalGlobe, Inc., Longmont CO USA 80503. DigitalGlobe and the DigitalGlobe logos are trademarks of DigitalGlobe, Inc. The use and/or dissemination of this data and/or of any product in any way derived there from are restricted. Unauthorized use and/or dissemination is prohibited.
Report produced by UNITAR / UNOSAT

Information about the Product

Acquired: 04/04/2024

Source: WorldView-2

Category: Reference Map

Impact map - West Ampisikanana West, Madagasar

Copyright: Includes Pleiades material © CNES (2024), Distribution Airbus DS.

Information about the Product

Acquired: 02/04/2024

Source: PLEIADES

Category: Grading Map

Impact map - East Ampisikanana, Madagascar

Copyright: Includes Pleiades material © CNES (2024), Distribution Airbus DS.
Map produced by ICube-SERTIT

Information about the Product

Acquired: 02/04/2024

Source: PLEIADES

Category: Grading Map

Flood impact in Anivorano, Madagascar (AOI ID:1)

Copyright: USGS/NASA Landsat Program
Map produced by Geoinformation Systems

Information about the Product

Acquired: LANDSAT8: 04/04/2024
LANDSAT9: 28/05/2023

Source: LANDSAT8 / LANDSAT9

Category: Delineation Map

Satellite detected water extent over Sambava and Vohemar Districts, Sava Region, Madagascar

Copyright: © DLR e.V. (2024), Distribution Airbus DS Geo GmbH
Map produced by UNITAR/ UNOSAT

Information about the Product

Acquired: 01/04/2024

Source: TANDEM_X

Category: Delineation Map

Impact map- Anjanazana East, Madagascar

Copyright: Includes Pleiades material © CNES (2024), Distribution Airbus DS.
Map produced by ICube-SERTIT

Information about the Product

Acquired: 31/03/2024

Source: PLEIADES

Category: Grading Map

Impact map - Anjanazana West, Madagascar

Copyright: Includes Pleiades material © CNES (2024), Distribution Airbus DS.
Map produced by ICube-SERTIT

Information about the Product

Acquired: 31/03/2024

Source: PLEIADES

Category: Grading Map

Possible affected croplands, Marivorahona (AOI ID:12), Ambilobe (AOI ID:15)

Copyright: Contains modified Copernicus Sentinel data (2024)
Map produced by Geoinformation Systems

Information about the Product

Acquired: SENTINEL-1: 29/03/2024 / 17/03/2024

Source: SENTINEL-1

Category: Grading Map

Preliminary satellite-derived flood assessment, Sava & Sofia Regions, Madagascar
Download the full report

Copyright: © Planet Labs Inc. (2024)
© (2024) DigitalGlobe, Inc., Longmont CO USA 80503. DigitalGlobe and the DigitalGlobe logos are trademarks of DigitalGlobe, Inc. The use and/or dissemination of this data and/or of any product in any way derived there from are restricted. Unauthorized use and/or dissemination is prohibited
Report produced by UNITAR / UNOSAT

Information about the Product

Acquired: PlanetScope: 31/03/2024, 01/04/2024
WorldView-3: 31/03/2024

Source: PlanetScope / WorldView-3

Category: Reference Map

Flood situation in Marivorahona and Ambilobe

Copyright: Contains modified Copernicus Sentinel data (2024)
Map produced by Geoinformation Systems

Information about the Product

Acquired: 17/03/2024, 29/03/2024

Source: Sentinel-1

Category: Reference Map

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