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GW · Guinea-Bissau ·

Madina do Boé fire, 14 May 2020 Madina do Boé

Out · last detection 14 May 2020, 13:27 UTC

The fire started on 14 May 2020 in Madina do Boé, Guinea-Bissau, and satellites saw it burning for 1 day. Copernicus’s global GWIS system rebuilt a burnt perimeter of 1,172 hectares from heat detections, spread across a single municipality.

It is the 79th largest in Gabú since 2016 (of 123 with a page). Number 23 in Guinea-Bissau in 2020, of 34.

Burnt area
1,172ha
GWIS perimeter (Copernicus)
Duration
1day
14 May 2020 – 14 May 2020
Municipalities hit
1
sectors
Started on
14 May
2020
Heat detections
41
in a single hotspot: 253 MW
Danger at start
36
High · FWI index
Average daily power
2.6GW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 14 May14 May

How it evolved, day by day

14 May 2020 · 2,639 MW · 41

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

The weather it burned in

36°high
28km/h · peak gust
43%lowest humidity

It had gone 30 days without rain (1 mm or more) when it started.

This area had burned before

94% of the perimeter overlaps earlier fires recorded since 2016: 1,019 ha in 2016, 520 ha in 2018. Part of it burned more than once, so the yearly figures add up to more than the 1,099 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 0.7% of the area of London (12 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. Madina do Boé where it started
    1,179 ha reached on 14 May
    0.5 %

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 2020
Built-up area< 0.1 ha
Residents< 20

Inside the perimeter there was no noticeable built-up land and almost nobody lived there (GHSL 2020, 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)
14 May 36.5 °C 43 % 28 km/h 0.2 mm High 36
15 May after 39.2 °C 31 % 31 km/h 0.0 mm Very high 40
16 May after 39.3 °C 29 % 44 km/h 0.0 mm Very high 46
17 May after 38.2 °C 28 % 36 km/h 0.0 mm Very high 42
18 May after 36.9 °C 34 % 38 km/h 0.3 mm Very high 45
19 May after 36.2 °C 36 % 34 km/h 0.0 mm Very high 40
20 May after 38.3 °C 28 % 38 km/h 0.0 mm Very high 43
21 May after 38.9 °C 27 % 37 km/h 0.0 mm Very high 44
22 May after 38.0 °C 29 % 41 km/h 0.0 mm Very high 47
23 May after 38.1 °C 29 % 38 km/h 0.0 mm Very high 45
24 May after 36.9 °C 40 % 31 km/h 0.1 mm Very high 38

Its twins: fires that started in the same weather

It started with an FWI of 35.8, a minimum humidity of 43% and 30 days without rain. Fires in the area that started in weather like this since 2016: 23.

FWI at the start 35.8
Minimum humidity 43 %
Days without rain 30
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Missira fire, May 2023
2,308 ha 6 days FWI 30.8 Min. humidity 45 % 75 km away, in 2023

First rain (1 mm or more) after it ended: 1.9 mm on 14 May.

What happened to them

5 days
median duration
2,600 ha
median area
100 %
went past 1,000 ha
3.4 mm
rain at the end (median; 18 of 23 had it)

It stayed below its twins: 1,172 ha against a median of 2,600 ha. It lasted 1 day, against 5 days.

In 5 of 23, 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 3.4 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
28km/h · max. gust

It was considered over on 14 May, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 18 of 23, with a median of 3.4 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 · 7 May 2020
After · 21 May 2020

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 · 41Every 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-Bissau

Frequently asked questions

How long did the Madina do Boé fire last?
GWIS (Copernicus) dates it between 14 May 2020 and 14 May 2020: 1 day 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 1,172 hectares (11.7 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Madina do Boé (1,179 ha, 0.5 %).
What was the weather like?
During the fire the temperature reached 36.5 °C, humidity dropped to 43 % and gusts hit 28 km/h. The fire danger index (FWI) reached 36, class High.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Guinea-Bissau (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: 23. Their median duration was 5 days and their median area 2,600 ha; 100 % went past 1,000 ha. In 5 of 23, 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 3.4 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 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.

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.

Report an error
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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. 41 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 2020, 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 ADM2 (Open Data Commons Open Database License 1.0). 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.