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BJ · Benin · –

Tanguiéta fire, 14 January 2021 Tanguiéta, Kérou

Out · last detection 13 Feb 2021, 01:23 UTC

The fire started on 14 January 2021 in Tanguiéta, Benin, and satellites saw it burning for 31 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 79,561 hectares from heat detections, spread across 2 municipalities.

It is the largest fire in Atakora since 2016 (of 420 with a page). The largest in Benin in 2021, of 128.

Burnt area
79,561ha
GWIS perimeter (Copernicus)
Duration
31days
14 Jan 2021 – 13 Feb 2021
Municipalities hit
2
communes
Started on
14 Jan
2021
Heat detections
2,960
in a single hotspot: 368 MW
Danger at start
56
Extreme · FWI index
Average daily power
920MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 14 Jan13 Feb
13 Feb 2021

How it evolved, day by day

15 Jan 2021 · 2,548 MW · 158 16 Jan 2021 · 669 MW · 86 17 Jan 2021 · 818 MW · 137 18 Jan 2021 · 6,422 MW · 316 19 Jan 2021 · 3,210 MW · 257 20 Jan 2021 · 2,962 MW · 296 21 Jan 2021 · 2,242 MW · 297 22 Jan 2021 · 1,441 MW · 310 23 Jan 2021 · 1,492 MW · 238 24 Jan 2021 · 1,357 MW · 207 25 Jan 2021 · 1,613 MW · 138 26 Jan 2021 · 337 MW · 52 27 Jan 2021 · 255 MW · 38 28 Jan 2021 · 317 MW · 49 29 Jan 2021 · 39 MW · 15 30 Jan 2021 · 80 MW · 17 31 Jan 2021 · 1 MW · 1 1 Feb 2021 · 60 MW · 14 2 Feb 2021 · 62 MW · 21 3 Feb 2021 · 63 MW · 24 4 Feb 2021 · 63 MW · 9 5 Feb 2021 · 128 MW · 18 6 Feb 2021 · 162 MW · 33 7 Feb 2021 · 23 MW · 20 8 Feb 2021 · 296 MW · 51 9 Feb 2021 · 359 MW · 47 10 Feb 2021 · 427 MW · 64 11 Feb 2021 · 130 MW · 32 12 Feb 2021 · 30 MW · 10 13 Feb 2021 · 5 MW · 5
18 Jan 27 Jan 2 Feb 8 Feb

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
41km/h · peak gust
6%lowest humidity

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

This area had burned before

77% of the perimeter overlaps earlier fires recorded since 2016: 14,391 ha in 2016, 28,703 ha in 2017, 4,075 ha in 2018, 43,367 ha in 2019, 9,168 ha in 2020. Part of it burned more than once, so the yearly figures add up to more than the 61,363 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 50% of the area of London (796 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
    77,818 ha reached on 15 Jan
    14 %
  2. 2,381 ha reached on 15 Jan
    0.6 %

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 2020
Built-up area0.47 ha
Residents≈ 40

Inside the perimeter there were about 0.47 hectares of built-up land and about 40 residents (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 60 days without rain: 45 % of the area in Benin

Day High Min. humidity Peak gust Rain Danger (FWI)
14 Jan 35.7 °C 11 % 35 km/h 0.0 mm Extreme 56
15 Jan 35.6 °C 13 % 34 km/h 0.0 mm Extreme 55
16 Jan 35.7 °C 13 % 33 km/h 0.0 mm Extreme 54
17 Jan 35.9 °C 11 % 40 km/h 0.0 mm Extreme 62
18 Jan 35.6 °C 13 % 40 km/h 0.0 mm Extreme 60
19 Jan 34.8 °C 14 % 38 km/h 0.0 mm Extreme 58
20 Jan 33.1 °C 14 % 40 km/h 0.0 mm Extreme 59
21 Jan 33.3 °C 15 % 40 km/h 0.0 mm Extreme 58
22 Jan 32.3 °C 15 % 36 km/h 0.0 mm Extreme 55
23 Jan 33.1 °C 15 % 34 km/h 0.0 mm Extreme 52
24 Jan 34.5 °C 15 % 34 km/h 0.0 mm Extreme 53
25 Jan 35.7 °C 12 % 36 km/h 0.0 mm Extreme 55
26 Jan 36.6 °C 12 % 34 km/h 0.0 mm Extreme 54
27 Jan 36.5 °C 12 % 36 km/h 0.0 mm Extreme 55
28 Jan 36.9 °C 13 % 36 km/h 0.0 mm Extreme 55
29 Jan 36.1 °C 10 % 41 km/h 0.0 mm Extreme 59
30 Jan 35.3 °C 13 % 38 km/h 0.0 mm Extreme 57
31 Jan 34.5 °C 11 % 32 km/h 0.0 mm Extreme 52
1 Feb 35.1 °C 9 % 34 km/h 0.0 mm Extreme 54
2 Feb 35.8 °C 9 % 32 km/h 0.0 mm Extreme 54
3 Feb 37.2 °C 11 % 36 km/h 0.0 mm Extreme 56
4 Feb 36.5 °C 11 % 38 km/h 0.0 mm Extreme 59
5 Feb 37.7 °C 11 % 37 km/h 0.0 mm Extreme 59
6 Feb 37.1 °C 13 % 39 km/h 0.0 mm Extreme 62
7 Feb 36.8 °C 12 % 30 km/h 0.0 mm Extreme 55
8 Feb 37.8 °C 8 % 30 km/h 0.0 mm Extreme 54
9 Feb 38.2 °C 8 % 32 km/h 0.0 mm Extreme 55
10 Feb 38.9 °C 10 % 32 km/h 0.0 mm Extreme 57
11 Feb 39.4 °C 13 % 37 km/h 0.0 mm Extreme 60
12 Feb 39.0 °C 10 % 34 km/h 0.0 mm Extreme 59
13 Feb 38.9 °C 6 % 37 km/h 0.0 mm Extreme 62
14 Feb after 39.2 °C 7 % 34 km/h 0.0 mm Extreme 59
15 Feb after 39.7 °C 15 % 28 km/h 0.0 mm Extreme 56
16 Feb after 39.5 °C 8 % 40 km/h 0.0 mm Extreme 63
17 Feb after 36.7 °C 6 % 45 km/h 0.0 mm Extreme 69
18 Feb after 34.9 °C 10 % 42 km/h 0.0 mm Extreme 68
19 Feb after 32.1 °C 11 % 45 km/h 0.0 mm Extreme 68
20 Feb after 33.2 °C 11 % 40 km/h 0.0 mm Extreme 62
21 Feb after 34.6 °C 11 % 37 km/h 0.0 mm Extreme 60
22 Feb after 35.4 °C 10 % 40 km/h 0.0 mm Extreme 62
23 Feb after 36.0 °C 12 % 40 km/h 0.0 mm Extreme 62

Its twins: fires that started in the same weather

It started with an FWI of 55.5, a minimum humidity of 11% and more than two months without rain. Fires in the area that started in weather like this since 2016: 105.

FWI at the start 55.5
Minimum humidity 11 %
Days without rain 60+
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Tanguiéta fire, December 2023
2,932 ha 4 days FWI 55.6 Min. humidity 11 % 32 km away, in 2023

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

What happened to them

4 days
median duration
1,605 ha
median area
100 %
went past 1,000 ha
—
rain at the end (median; 0 of 105 had it)

It was 49.6 times larger than the median of its twins and lasted 31 days, against 4 days.

None of its 105 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 13 Feb, and not even 1 mm fell in the following ten days: it went out without rain. None of its 105 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 · 7 Jan 2021
After · 20 Feb 2021

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 · 2,960Every 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 14 January 2021 and 13 February 2021: 31 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 79,561 hectares (795.6 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Tanguiéta (77,818 ha, 14 %); Kérou (2,381 ha, 0.6 %).
What was the weather like?
During the fire the temperature reached 39.4 °C, humidity dropped to 6 % and gusts hit 41 km/h. The fire danger index (FWI) reached 62, 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: 105. Their median duration was 4 days and their median area 1,605 ha; 100 % went past 1,000 ha. None of its 105 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; 4 polygons grouped in this page.
  • Dates from the perimeter: the VIIRS detections inside it did not change them. 2,960 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.