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AO · Angola · –

Muconda fire, 11 August 2023 Muconda

Out · last detection 19 Aug 2023, 12:30 UTC

The fire started on 11 August 2023 in Muconda, Angola, and satellites saw it burning for 9 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 5,336 hectares from heat detections, spread across a single municipality.

It is the 128th largest in Lunda Sul since 2016 (of 161 with a page). Number 137 in Angola in 2023, of 158.

Compare with…

Suggestions: Muconda · 2016Saurimo · 2023Muconda · 2016Muconda · 2023

Burnt area
5,336ha
GWIS perimeter (Copernicus)
Duration
9days
11 Aug 2023 – 19 Aug 2023
Municipalities hit
1
municipalities
Started on
11 Aug
2023
Heat detections
159
in a single hotspot: 124 MW
Danger at start
48
Very high · FWI index
Average daily power
345MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 11 Aug19 Aug
19 Aug 2023

How it evolved, day by day

11 Aug 2023 · 151 MW · 14 12 Aug 2023 · 1,731 MW · 77 13 Aug 2023 · 588 MW · 38 14 Aug 2023 · 78 MW · 15 15 Aug 2023 · 56 MW · 8 16 Aug 2023 · 109 MW · 4 17 Aug 2023 · 36 MW · 2 19 Aug 2023 · 11 MW · 1
12 Aug 15 Aug 17 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

33°high
43km/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

82% of the perimeter overlaps earlier fires recorded since 2016: 469 ha in 2016, 778 ha in 2017, 2,478 ha in 2018, 911 ha in 2019, 765 ha in 2020, 1,660 ha in 2021, 747 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 4,396 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 3.4% of the area of London (53 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. Muconda where it started
    5,368 ha reached on 11 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.

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 Very dry air: 40 % of the area in Angola 60 days without rain: 84 % of the area in Angola

Day High Min. humidity Peak gust Rain Danger (FWI)
11 Aug 31.6 °C 13 % 41 km/h 0.0 mm Very high 48
12 Aug 32.1 °C 13 % 43 km/h 0.0 mm Very high 49
13 Aug 31.5 °C 10 % 42 km/h 0.0 mm Very high 49
14 Aug 32.4 °C 11 % 34 km/h 0.0 mm Very high 47
15 Aug 32.7 °C 16 % 35 km/h 0.0 mm Very high 48
16 Aug 33.2 °C 19 % 37 km/h 0.0 mm Very high 50
17 Aug 33.1 °C 22 % 29 km/h 0.0 mm Very high 43
18 Aug 33.4 °C 17 % 35 km/h 0.0 mm Very high 45
19 Aug 33.3 °C 17 % 35 km/h 0.0 mm Very high 45
20 Aug after 34.2 °C 18 % 28 km/h 0.0 mm Very high 44
21 Aug after 34.5 °C 20 % 21 km/h 0.0 mm Very high 42
22 Aug after 33.0 °C 23 % 20 km/h 0.0 mm Very high 42
23 Aug after 35.5 °C 10 % 34 km/h 0.0 mm Very high 47
24 Aug after 35.6 °C 13 % 34 km/h 0.0 mm Very high 49
25 Aug after 34.6 °C 19 % 27 km/h 0.0 mm Very high 46
26 Aug after 33.3 °C 21 % 24 km/h 0.0 mm Very high 45
27 Aug after 34.5 °C 13 % 40 km/h 0.0 mm Very high 49
28 Aug after 33.9 °C 15 % 55 km/h 0.0 mm Extreme 60
29 Aug after 31.8 °C 20 % 40 km/h 0.0 mm Very high 49

Its twins: fires that started in the same weather

It started with an FWI of 47.6, a minimum humidity of 13% and more than two months without rain. Fires in the area that started in weather like this since 2016: 32.

FWI at the start 47.6
Minimum humidity 13 %
Days without rain 60+
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Muconda fire, August 2016
6,928 ha 11 days FWI 47.3 Min. humidity 14 % 21 km away, in 2016

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

See its page Compare with this fire

What happened to them

12 days
median duration
6,480 ha
median area
22 %
went past 10,000 ha
2.1 mm
rain at the end (median; 9 of 32 had it)

It burned an area similar to its twins (5,336 ha against a median of 6,480 ha) and lasted 9 days, against 12 days.

In 23 of 32, 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 2.1 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
43km/h · max. gust

It was considered over on 19 Aug, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 9 of 32, with a median of 2.1 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 · 4 Aug 2023
After · 26 Aug 2023

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 15 August 2023 the air beside the fire reached 74 µg/m³ of PM2.5. That day averaged 46: 3.0 times the WHO daily guideline (15).

PM2.5 peak74 µg/m³
Days over the guideline11 days
PM10107 µg/m³
Optical depth1.38
9 Aug12 Aug15 Aug18 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 · 159Every 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 Angola

Frequently asked questions

How long did the Muconda fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 11 August 2023 to 19 August 2023 (9 days). The perimeter dates it from 11 August 2023 to 16 August 2023.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 5,336 hectares (53.4 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Muconda (5,368 ha, 0.2 %).
What was the weather like?
During the fire the temperature reached 33.4 °C, humidity dropped to 10 % and gusts hit 43 km/h. The fire danger index (FWI) reached 50, class Very high.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Angola (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: 32. Their median duration was 12 days and their median area 6,480 ha; 22 % went past 10,000 ha. In 23 of 32, 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 2.1 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 · 1 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
  1. Last day with fire: 16 August 2023 → 19 August 2023.

RSS Changes to this page With cross-checks and a citable version

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 adjusted with the VIIRS detections inside the perimeter, which said 11 August 2023 to 16 August 2023. 159 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.