How long did the Mahabo fire last?

GWIS (Copernicus) dates it between 11 October 2018 and 17 October 2018: 7 days between the first and last heat detection of the perimeter.

How much area did it burn?

The perimeter GWIS (Copernicus) rebuilt from heat detections is 2,306 hectares (23.1 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire only entered Mahabo (2,311 ha, 0.2 %).

Where does this data come from?

From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Madagascar (geoBoundaries). It is not an official report.

MG · Madagascar · 2018-10-11 → 2018-10-17

Mahabo fire, 11 October 2018 Mahabo

Out · last detection 18 Oct 2018, 10:58 UTC

The fire started on 11 October 2018 in Mahabo, Madagascar, and satellites saw it burning for 7 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 2,306 hectares from heat detections, spread across a single municipality.

It is the 65th largest in Menabe since 2016 (of 98 with a page). Number 35 in Madagascar in 2018, of 48.

Compare with…

Suggestions: Mahabo · 2016 Mahabo · 2017 Mahabo · 2020 Morondava · 2018

Burnt area: 2,306ha; GWIS perimeter (Copernicus)
Duration: 7days; 11 Oct 2018 – 17 Oct 2018
Municipalities hit: 1; districts
Started on: 11 Oct; 2018
Heat detections: 144; in a single hotspot: 86 MW
Average daily power: 208MW; detected power per day, on average

HOTSPOTS BY DAY 11 Oct17 Oct

Play back 18 Oct 2018

How it evolved, day by day

11 Oct 13 Oct 15 Oct 17 Oct

Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.

This area had burned before

77% of the perimeter overlaps earlier fires recorded since 2016: 2,041 ha in 2016, 1,795 ha in 2017. Part of it burned more than once, so the yearly figures add up to more than the 1,765 ha that had burned before.

How big is it?

It burned the equivalent of 1.5% of the area of London (23 km² against 1,583 km²).

London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).

This compares size, not location: both shapes are at the same scale, north up, centred on each other.

What happened to each town

Mahabo where it started

2,311 ha reached on 4 Oct

0.2 %

Burnt area inside each municipality, from crossing the GWIS perimeter with administrative boundaries. The distance runs from the point marking the centre of each area to the nearest fire: staying a kilometre away does not mean it reached the houses.

Before and after, from space

Drag the line to compare the same ground before the fire and after it.

↔

Before · 4 Oct 2018

After · 24 Oct 2018

Before After

If the day is cloudy, change the date: each satellite passes once a day. In false colour the burnt ground looks brown or red.

Detections table · 144Every satellite heat detection, one by one, with time, satellite, power and coordinates.

⬇ Download CSV Times in UTC. Each detection is a 375 m pixel: a large fire yields hundreds per pass.

Date and time	Satellite	FRP (MW)	Lat	Lon

Other fires nearby

All fires in Madagascar ›

Frequently asked questions

How long did the Mahabo fire last?: GWIS (Copernicus) dates it between 11 October 2018 and 17 October 2018: 7 days between the first and last heat detection of the perimeter.
How much area did it burn?: The perimeter GWIS (Copernicus) rebuilt from heat detections is 2,306 hectares (23.1 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire only entered Mahabo (2,311 ha, 0.2 %).
Where does this data come from?: From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Madagascar (geoBoundaries). It is not an official report.

Where to verify it

A satellite detection is not an official report. Final figures and the fire’s status are published by each country’s emergency service.

Satellite cross-check

NASA FIRMS ↗
GWIS · Copernicus ↗

History of this page Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.

No changes since 24 October 2026.

RSS Changes to this page

Does something look wrong on this page?

This page is built from satellite data and official records, and it sometimes gets things wrong: the wrong dates, the wrong town, two fires merged into one, or something that was not a wildfire at all. If you know this fire first-hand (you live nearby, saw it, fought it or reported on it), tell us what really happened and we will check it.

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What do you think is wrong?

Dates or duration Place or towns Burned area Name It was not a wildfire Same fire as another page Something else

What really happened?

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How we know this

Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery.
Dates from the perimeter: the VIIRS detections inside it did not change them. 144 Suomi-NPP VIIRS detections on those dates.
We have not matched this page with any official record.

How we build fire pages: methodology ›

Where this data comes from

The perimeter comes from the Copernicus Global Wildfire Information System (GWIS), which rebuilds it from MODIS and VIIRS heat detections and publishes it under CC BY 4.0. It is not measured on imagery as in Europe, so it is an estimate. Heat detections come from the VIIRS sensors aboard Suomi-NPP and NOAA-20, distributed by NASA FIRMS at 375 m resolution. Municipal boundaries come from geoBoundaries ADM2 (Creative Commons Attribution 3.0 Intergovernmental Organisations (CC BY 3.0 IGO)). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ from each country’s official figure.

Where it burned