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GN · Guinea · –

Wendou Mbour fire, 28 April 2016 Wendou Mbour, Dabiss

Out · last detection 11 May 2016, 14:18 UTC

The fire started on 28 April 2016 in Wendou Mbour, Guinea, and satellites saw it burning for 13 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 5,631 hectares from heat detections, spread across 2 municipalities.

It is the 12th largest in Boké since 2016 (of 195 with a page). Number 16 in Guinea in 2016, of 172.

Burnt area
5,631ha
GWIS perimeter (Copernicus)
Duration
13days
28 Apr 2016 – 10 May 2016
Municipalities hit
2
sub-prefectures
Started on
28 Apr
2016
Heat detections
226
in a single hotspot: 687 MW
Danger at start
29
High · FWI index
Average daily power
759MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 28 Apr10 May
11 May 2016

How it evolved, day by day

28 Apr 2016 · 19 MW · 3 29 Apr 2016 · 548 MW · 12 30 Apr 2016 · 192 MW · 23 1 May 2016 · 2,826 MW · 64 2 May 2016 · 5,115 MW · 105 3 May 2016 · 237 MW · 8 4 May 2016 · 4 MW · 1 5 May 2016 · 13 MW · 2 7 May 2016 · 53 MW · 3 8 May 2016 · 87 MW · 2 10 May 2016 · 1 MW · 1 11 May 2016 · 14 MW · 2
28 Apr 2 May 8 May

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

The weather it burned in

39°high
44km/h · peak gust
30%lowest humidity

It had gone 3 days without rain (1 mm or more) when it started.

This area had burned before

No earlier perimeters overlap this fire since 2016, when the satellite record begins.

How big is it?

10 km
It burned the equivalent of 3.6% of the area of London (56 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

  1. Wendou Mbour where it started
    5,617 ha reached on 28 Apr
    3.8 %
  2. 48 ha reached on 2 May
    0.0 %

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.

People and buildings inside the perimeter

GHSL 2015
Built-up area1.7 ha
Residents≈ 650

Inside the perimeter there were about 1.7 hectares of built-up land and about 650 residents (GHSL 2015, satellite-based estimate).

This is an estimate on 100 m cells, made from satellite imagery and census data: it does not mean that homes burned or that anyone was harmed. The perimeter also contains land that never burned.

Source: Global Human Settlement Layer (GHS-BUILT-S and GHS-POP R2023A), European Commission Joint Research Centre (JRC), © European Union, CC BY 4.0. Sum inside the perimeter computed by WorldFires. human-settlement.emergency.copernicus.eu

The weather day by day

ECMWF ERA5 reanalysis at the fire location, the standard reference for past weather, and the Canadian Fire Weather Index (the same system Copernicus uses), computed by WorldFires from that data. Days after the fire run until the first rain.

Open-Meteo.com (CC BY 4.0) · Copernicus Climate Change Service (ERA5)

Day High Min. humidity Peak gust Rain Danger (FWI)
28 Apr 37.1 °C 38 % 31 km/h 0.0 mm High 29
29 Apr 36.9 °C 37 % 27 km/h 0.0 mm High 30
30 Apr 38.3 °C 30 % 35 km/h 0.0 mm High 37
1 May 39.2 °C 30 % 40 km/h 0.0 mm Very high 39
2 May 36.7 °C 34 % 36 km/h 0.0 mm Very high 40
3 May 36.8 °C 36 % 35 km/h 0.0 mm High 38
4 May 36.1 °C 39 % 27 km/h 0.0 mm High 35
5 May 38.5 °C 30 % 44 km/h 0.0 mm Very high 42
6 May 35.8 °C 38 % 37 km/h 0.0 mm Very high 38
7 May 36.3 °C 32 % 37 km/h 0.0 mm Very high 38
8 May 36.9 °C 32 % 35 km/h 0.0 mm High 37
9 May 37.9 °C 31 % 25 km/h 0.0 mm High 35
10 May 38.0 °C 32 % 34 km/h 0.0 mm High 36
11 May after 38.0 °C 33 % 31 km/h 0.0 mm High 36
12 May after 37.7 °C 33 % 35 km/h 0.0 mm High 38
13 May after 36.6 °C 37 % 37 km/h 0.0 mm Very high 41
14 May after 36.3 °C 43 % 36 km/h 0.0 mm High 34
15 May after 35.2 °C 48 % 34 km/h 0.2 mm High 31
16 May after 35.2 °C 45 % 34 km/h 0.0 mm High 31
17 May after 37.1 °C 27 % 29 km/h 0.0 mm Very high 38
18 May after 37.5 °C 34 % 41 km/h 0.0 mm Very high 42
19 May after 35.3 °C 48 % 33 km/h 0.6 mm High 31
20 May after 34.4 °C 51 % 26 km/h 0.9 mm Moderate 19

Its twins: fires that started in the same weather

It started with an FWI of 29.0, a minimum humidity of 38% and 3 days without rain. Fires in the area that started in weather like this since 2016: 25.

FWI at the start 29.0
Minimum humidity 38 %
Days without rain 3
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Wendou Mbour fire, May 2019
2,072 ha 3 days FWI 27.8 Min. humidity 38 % 19 km away, in 2019

First rain (1 mm or more) after it ended: 2.2 mm on 6 May.

What happened to them

7 days
median duration
2,583 ha
median area
100 %
went past 1,000 ha
2.5 mm
rain at the end (median; 21 of 25 had it)

It was 2.2 times larger than the median of its twins and lasted 13 days, against 7 days.

Only 4 of its 25 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 4 of 25, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 2.5 mm.

This is a bank of analogues: it shows what usually happens, not what will happen. With fewer than 15 twins we give no figures. How we calculate it

How it ended

—first rain
—no rain in ten days
44km/h · max. gust

It was considered over on 10 May, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 21 of 25, with a median of 2.5 mm.

Weather on this page: Open-Meteo.com (CC BY 4.0) · Copernicus Climate Change Service (ERA5)

How a twin is chosen

  • Same area: fires that have already ended, less than 250 km from this one, since 2016.
  • Same start: we compare the FWI on the first day, the minimum humidity that day and the run of days without rain before it. The slider sets how much they may differ.
  • Only pages with final weather data (ERA5 reanalysis) calculated in the same way as this fire’s; agricultural and grass burns and pages with data under review are left out.
  • Fires burning at the same time as this one (a week before or after) are left out: they share the same spell of weather and do not count as a precedent.
  • They are sorted by similarity, and the outlines of the first five are drawn.

How we calculate it

Before and after, from space

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

Before · 21 Apr 2016
After · 17 May 2016

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 · 226Every 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 timeSatelliteFRP (MW)LatLon

Other fires nearby

All fires in Guinea

Frequently asked questions

How long did the Wendou Mbour fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 28 April 2016 to 10 May 2016 (13 days). The perimeter dates it from 29 April 2016 to 3 May 2016.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 5,631 hectares (56.3 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Wendou Mbour (5,617 ha, 3.8 %); Dabiss (48 ha, 0.0 %).
What was the weather like?
During the fire the temperature reached 39.2 °C, humidity dropped to 30 % and gusts hit 44 km/h. The fire danger index (FWI) reached 42, class Very high.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Guinea (geoBoundaries). It is not an official report.
How did the fires that started in similar weather in this area end?
Fires less than 250 km away that started since 2016 with a similar FWI, humidity and dry spell: 25. Their median duration was 7 days and their median area 2,583 ha; 100 % went past 1,000 ha. Only 4 of its 25 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 4 of 25, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 2.5 mm.

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

History of this page · 2 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
  1. Last day with fire: 3 May 2016 → 10 May 2016.
  2. Start date: 29 April 2016 → 28 April 2016.

RSS Changes to this page With cross-checks and a citable version

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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How we know this
  • Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery.
  • Dates adjusted with the VIIRS detections inside the perimeter, which said 29 April 2016 to 3 May 2016. 226 Suomi-NPP VIIRS detections on those dates.
  • We have not matched this page with any official record.
  • Weather: Copernicus ERA5 reanalysis at the fire location, in cells of about 25 km.
  • Built-up area and population come from the JRC Global Human Settlement Layer (epoch 2015, 100 m cells), summed inside the perimeter: an estimate of what was there, not a damage count.

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 ADM3 (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.