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CG · Republic of the Congo · –

Ngabé fire, 25 August 2024 Ngabé

Out · last detection 26 Aug 2024, 12:38 UTC

The fire started on 25 August 2024 in Ngabé, Republic of the Congo, and satellites saw it burning for 2 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 1,066 hectares from heat detections, spread across a single municipality.

It is the 171th largest in Pool since 2016 (of 202 with a page). Number 81 in Republic of the Congo in 2024, of 103.

Burnt area
1,066ha
GWIS perimeter (Copernicus)
Duration
2days
25 Aug 2024 – 26 Aug 2024
Municipalities hit
1
districts
Started on
25 Aug
2024
Heat detections
34
in a single hotspot: 149 MW
Danger at start
24
High · FWI index
Average daily power
956MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 25 Aug26 Aug
26 Aug 2024

How it evolved, day by day

25 Aug 2024 · 1,876 MW · 28 26 Aug 2024 · 36 MW · 6
25 Aug 26 Aug

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

The weather it burned in

32°high
32km/h · peak gust
42%lowest humidity

It had gone more than two months without rain (1 mm or more) when it started. Rain came after the fire: 2.5 mm on 31 Aug.

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 0.7% of the area of London (11 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. Ngabé where it started
    1,073 ha reached on 25 Aug
    0.2 %

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.

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: 12 % of the area in Republic of the Congo

Day High Min. humidity Peak gust Rain Danger (FWI)
25 Aug 32.1 °C 43 % 31 km/h 0.2 mm High 24
26 Aug 31.9 °C 42 % 32 km/h 0.0 mm High 25
27 Aug after 30.6 °C 47 % 31 km/h 0.1 mm High 25
28 Aug after 31.8 °C 45 % 28 km/h 0.2 mm High 25
29 Aug after 31.7 °C 50 % 27 km/h 0.5 mm High 24
30 Aug after 32.1 °C 46 % 39 km/h 0.0 mm High 28
31 Aug after 31.4 °C 47 % 36 km/h 2.5 mm Low 10

Its twins: fires that started in the same weather

It started with an FWI of 24.4, a minimum humidity of 43% and more than two months without rain. Fires in the area that started in weather like this since 2016: 36.

FWI at the start 24.4
Minimum humidity 43 %
Days without rain 60+
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Mayama fire, August 2024
1,028 ha 7 days FWI 20.9 Min. humidity 43 % 90 km away, in 2024

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

What happened to them

5 days
median duration
1,364 ha
median area
100 %
went past 1,000 ha
1.5 mm
rain at the end (median; 14 of 36 had it)

It burned an area similar to its twins (1,066 ha against a median of 1,364 ha) and lasted 2 days, against 5 days.

In 22 of 36, 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 1.5 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

2.5 mmfirst rain
31 Aug5 days after it ended
32km/h · max. gust

It was considered over on 26 Aug, and on 31 Aug 2.5 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 14 of 36, with a median of 1.5 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 · 18 Aug 2024
After · 2 Sept 2024

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 29 August 2024 the air beside the fire reached 96 µg/m³ of PM2.5. That day averaged 54: 3.6 times the WHO daily guideline (15).

PM2.5 peak96 µg/m³
Days over the guideline7 days
PM10138 µg/m³
Optical depth3.06
23 Aug25 Aug27 Aug29 Aug
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 · 34Every 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 Republic of the Congo

Frequently asked questions

How long did the Ngabé fire last?
GWIS (Copernicus) dates it between 25 August 2024 and 26 August 2024: 2 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 1,066 hectares (10.7 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Ngabé (1,073 ha, 0.2 %).
What was the weather like?
During the fire the temperature reached 32.1 °C, humidity dropped to 42 % and gusts hit 32 km/h. The fire danger index (FWI) reached 25, class High.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Republic of the Congo (geoBoundaries ADM2). 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: 36. Their median duration was 5 days and their median area 1,364 ha; 100 % went past 1,000 ha. In 22 of 36, 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 1.5 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 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. 34 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.

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 (Map Library 2007, nombres de Wikidata) (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.