Madagascar: Cyclone - Category 1 - Mar 2023

Disaster loss and damage dataset for Madagascar

**ADAM ID: FL-20230225-MDG-00** Flood covering 733414.0 sq m on Feb 25 2023 in Madagascar. It impacted 1214587 people.

**ADAM ID: **FL-20250318-MDG-01 A flood occurred on Mar 18 2025 in Madagascar. It affected an estimated 138403 people and 45057 ha of cropland. WFP’s Automated Disaster Analysis and Mapping (ADAM) system is an operational system for collecting, analysing and mapping geospatial and socio-economic information following sudden onset humanitarian emergencies.

**ADAM ID: **FL-20260213-MDG-00 A flood occurred on Feb 13 2026 in Madagascar. It affected an estimated 1229989 people and 197440 ha of cropland. WFP’s Automated Disaster Analysis and Mapping (ADAM) system is an operational system for collecting, analysing and mapping geospatial and socio-economic information following sudden onset humanitarian emergencies.

This dataset contains OpenStreetMap data exported from the HOTOSM disaster mapping response to Tropical Cyclone Gezani in early 2026 (GLIDE: TC-2026-000015-MDG ). On Tuesday the 10th of February, Tropical Cyclone GEZANI 26 made landfall near the city of Toamasina on the eastern coast of Madagascar as Category 4 cyclone. The cyclone severely damaged homes leading to massive displacements, caused fatalities and injured many. HOT is working in collaboration with Madagascar OSM Community, Malagasy Red Cross, and INGD (Mozambique Disaster Risk Management Institute) to prioritise and coordinate the mapping response. The data has been contributed by volunteers through the Humanitarian OpenStreetMap Team's Tasking Manager and represents buildings and roads in the affected area. It is updated weekly as mapping progresses. Subscribe to this dataset to be notified of any new updates. This dataset includes all OpenStreetMap features in the area of interest for this event, covering: Buildings and Roads. See the list of projects in the Tasking Manager here. For more information see the HOTOSM activation page. As of 27 April 2026: over 2,000 contributors (non unique).

**ADAM ID: 1000957\_6** Cyclone (tropical storm) during the period Jan 18 2023-Jan 29 2023 in Madagascar. It impacted 0 people.