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BJ · Benin · –

Tanguiéta fire, 12 December 2022 Tanguiéta

Out · last detection 15 Dec 2022, 02:01 UTC

The fire started on 12 December 2022 in Tanguiéta, Benin, and satellites saw it burning for 4 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 7,401 hectares from heat detections, spread across a single municipality.

It is the 34th largest in Atakora since 2016 (of 420 with a page). Number 11 in Benin in 2022, of 96.

Burnt area
7,401ha
GWIS perimeter (Copernicus)
Duration
4days
12 Dec 2022 – 15 Dec 2022
Municipalities hit
1
communes
Started on
12 Dec
2022
Heat detections
182
in a single hotspot: 125 MW
Danger at start
54
Extreme · FWI index
Average daily power
1.3GW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 12 Dec15 Dec
15 Dec 2022

How it evolved, day by day

12 Dec 2022 · 4,651 MW · 133 13 Dec 2022 · 297 MW · 40 14 Dec 2022 · 107 MW · 7 15 Dec 2022 · 2 MW · 2
12 Dec 13 Dec 14 Dec 15 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
34km/h · peak gust
9%lowest humidity

It had gone 59 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: 274 ha in 2016, 3,578 ha in 2017, 236 ha in 2018, 3,572 ha in 2019, 529 ha in 2020, 4,701 ha in 2021. Part of it burned more than once, so the yearly figures add up to more than the 6,946 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 4.7% of the area of London (74 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
    7,457 ha reached on 12 Dec
    1.3 %

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)

Started with Very dry air: 49 % of the area in Benin

Day High Min. humidity Peak gust Rain Danger (FWI)
12 Dec 35.9 °C 12 % 34 km/h 0.0 mm Extreme 54
13 Dec 36.4 °C 12 % 34 km/h 0.0 mm Extreme 54
14 Dec 36.3 °C 9 % 32 km/h 0.0 mm Extreme 54
15 Dec 36.1 °C 10 % 30 km/h 0.0 mm Extreme 52
16 Dec after 36.2 °C 11 % 28 km/h 0.0 mm Extreme 52
17 Dec after 34.2 °C 14 % 34 km/h 0.0 mm Extreme 54
18 Dec after 35.0 °C 15 % 38 km/h 0.0 mm Extreme 57
19 Dec after 34.8 °C 13 % 41 km/h 0.0 mm Extreme 61
20 Dec after 33.8 °C 15 % 40 km/h 0.0 mm Extreme 60
21 Dec after 32.7 °C 16 % 43 km/h 0.0 mm Extreme 60
22 Dec after 31.7 °C 18 % 44 km/h 0.0 mm Extreme 58
23 Dec after 31.0 °C 16 % 40 km/h 0.0 mm Extreme 55
24 Dec after 30.8 °C 15 % 41 km/h 0.0 mm Extreme 56
25 Dec after 31.0 °C 18 % 41 km/h 0.0 mm Extreme 55

Its twins: fires that started in the same weather

It started with an FWI of 54.1, a minimum humidity of 12% and 59 days without rain. Fires in the area that started in weather like this since 2016: 101.

FWI at the start 54.1
Minimum humidity 12 %
Days without rain 59
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Tanguiéta fire, February 2024
3,486 ha 3 days FWI 52.8 Min. humidity 12 % 9 km away, in 2024

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

What happened to them

4 days
median duration
1,502 ha
median area
100 %
went past 1,000 ha
—
rain at the end (median; 0 of 101 had it)

It was 4.9 times larger than the median of its twins and lasted 4 days, against 4 days.

Only 5 of its 101 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
34km/h · max. gust

It was considered over on 15 Dec, and not even 1 mm fell in the following ten days: it went out without rain. None of its 101 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 · 5 Dec 2022
After · 22 Dec 2022

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 16 December 2022 the air beside the fire reached 204 µg/m³ of PM2.5. That day averaged 121: 8.1 times the WHO daily guideline (15).

PM2.5 peak204 µg/m³
Days over the guideline7 days
PM10301 µg/m³
Optical depth1.38
10 Dec12 Dec14 Dec16 Dec18 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 · 182Every 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 12 December 2022 and 15 December 2022: 4 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 7,401 hectares (74.0 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Tanguiéta (7,457 ha, 1.3 %).
What was the weather like?
During the fire the temperature reached 36.4 °C, humidity dropped to 9 % and gusts hit 34 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: 101. Their median duration was 4 days and their median area 1,502 ha; 100 % went past 1,000 ha. Only 5 of its 101 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.

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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. 182 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 (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.