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BJ · Benin · –

Tanguiéta fire, 20 December 2024 Tanguiéta

Out · last detection 29 Dec 2024, 00:52 UTC

The fire started on 20 December 2024 in Tanguiéta, Benin, and satellites saw it burning for 10 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 8,911 hectares from heat detections, spread across a single municipality.

It is the 26th largest in Atakora since 2016 (of 420 with a page). Number 5 in Benin in 2024, of 86.

Burnt area
8,911ha
GWIS perimeter (Copernicus)
Duration
10days
20 Dec 2024 – 29 Dec 2024
Municipalities hit
1
communes
Started on
20 Dec
2024
Heat detections
280
in a single hotspot: 195 MW
Danger at start
53
Extreme · FWI index
Average daily power
305MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 20 Dec29 Dec
29 Dec 2024

How it evolved, day by day

20 Dec 2024 · 1,631 MW · 43 21 Dec 2024 · 28 MW · 9 22 Dec 2024 · 217 MW · 38 23 Dec 2024 · 24 MW · 5 24 Dec 2024 · 3 MW · 3 25 Dec 2024 · 780 MW · 99 26 Dec 2024 · 161 MW · 33 27 Dec 2024 · 37 MW · 21 28 Dec 2024 · 165 MW · 28 29 Dec 2024 · 1 MW · 1
20 Dec 22 Dec 24 Dec 26 Dec 28 Dec

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
41km/h · peak gust
10%lowest humidity

It had gone more than two months without rain (1 mm or more) when it started.

This area had burned before

100% of the perimeter overlaps earlier fires recorded since 2016: 3,765 ha in 2016, 2,137 ha in 2017, 7,817 ha in 2019, 927 ha in 2020, 4,057 ha in 2021, 8,174 ha in 2022, 4,031 ha in 2023. Part of it burned more than once, so the yearly figures add up to more than the 8,901 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 5.6% of the area of London (89 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. Tanguiéta where it started
    8,988 ha reached on 20 Dec
    1.6 %

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 2025
Built-up area< 0.1 ha
Residents< 20

Inside the perimeter there was no noticeable built-up land and almost nobody lived there (GHSL 2025, 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. The GHSL 2025 epoch is a projection made from 2020 and earlier data.

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)

Started with 60 days without rain: 45 % of the area in Benin

Day High Min. humidity Peak gust Rain Danger (FWI)
20 Dec 29.6 °C 17 % 41 km/h 0.0 mm Extreme 53
21 Dec 31.0 °C 18 % 35 km/h 0.0 mm Extreme 50
22 Dec 31.6 °C 19 % 34 km/h 0.0 mm Very high 48
23 Dec 33.5 °C 16 % 32 km/h 0.0 mm Very high 47
24 Dec 34.5 °C 17 % 30 km/h 0.0 mm Very high 46
25 Dec 35.5 °C 14 % 31 km/h 0.0 mm Very high 46
26 Dec 35.2 °C 10 % 33 km/h 0.0 mm Extreme 52
27 Dec 34.0 °C 10 % 36 km/h 0.0 mm Extreme 54
28 Dec 34.6 °C 11 % 34 km/h 0.0 mm Extreme 53
29 Dec 35.1 °C 13 % 29 km/h 0.0 mm Very high 50
30 Dec after 36.0 °C 15 % 32 km/h 0.0 mm Extreme 53
31 Dec after 36.3 °C 15 % 29 km/h 0.0 mm Very high 50
1 Jan after 36.3 °C 16 % 29 km/h 0.0 mm Very high 50
2 Jan after 36.2 °C 18 % 28 km/h 0.0 mm Very high 48
3 Jan after 36.5 °C 17 % 30 km/h 0.0 mm Very high 50
4 Jan after 35.9 °C 15 % 30 km/h 0.0 mm Very high 50
5 Jan after 36.3 °C 14 % 32 km/h 0.0 mm Extreme 51
6 Jan after 35.9 °C 11 % 36 km/h 0.0 mm Extreme 56
7 Jan after 35.9 °C 14 % 38 km/h 0.0 mm Extreme 58
8 Jan after 34.6 °C 15 % 42 km/h 0.0 mm Extreme 59

Its twins: fires that started in the same weather

It started with an FWI of 53.0, a minimum humidity of 17% and more than two months without rain. Fires in the area that started in weather like this since 2016: 69.

FWI at the start 53.0
Minimum humidity 17 %
Days without rain 60+
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Kérou fire, December 2017
1,065 ha 4 days FWI 53.8 Min. humidity 17 % 33 km away, in 2017

First rain (1 mm or more) after it ended: none in the following ten days.

What happened to them

5 days
median duration
1,474 ha
median area
100 %
went past 1,000 ha
—
rain at the end (median; 0 of 69 had it)

It was 6.0 times larger than the median of its twins and lasted 10 days, against 5 days.

Only 2 of its 69 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 none of them did 1 mm fall in the ten days after the end: they all went out without rain.

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
41km/h · max. gust

It was considered over on 29 Dec, and not even 1 mm fell in the following ten days: it went out without rain. None of its 69 twins had rain when they ended.

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 · 13 Dec 2024
After · 5 Jan 2025

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

The smoke

CAMS · Copernicus

On 19 December 2024 the air beside the fire reached 139 µg/m³ of PM2.5. That day averaged 117: 7.8 times the WHO daily guideline (15).

PM2.5 peak139 µg/m³
Days over the guideline15 days
PM10686 µg/m³
Optical depth0.87
18 Dec21 Dec24 Dec27 Dec30 Dec
Good Fair Moderate Poor Very poor Extremely poor

Particles from the Copernicus CAMS model at the centre of the perimeter; these are not measurements in each town. The pale bar is the worst hour, the solid one the daily average.

Open-Meteo.com (CC BY 4.0) · Copernicus Atmosphere Monitoring Service (CAMS)

Detections table · 280Every 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 Benin

Frequently asked questions

How long did the Tanguiéta fire last?
GWIS (Copernicus) dates it between 20 December 2024 and 29 December 2024: 10 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 8,911 hectares (89.1 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Tanguiéta (8,988 ha, 1.6 %).
What was the weather like?
During the fire the temperature reached 35.5 °C, humidity dropped to 10 % and gusts hit 41 km/h. The fire danger index (FWI) reached 54, class Extreme.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Benin (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: 69. Their median duration was 5 days and their median area 1,474 ha; 100 % went past 1,000 ha. Only 2 of its 69 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 none of them did 1 mm fall in the ten days after the end: they all went out without rain.

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; 2 polygons grouped in this page.
  • Dates from the perimeter: the VIIRS detections inside it did not change them. 280 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 2025, 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 (Public Domain). 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.