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Mavinga fire, 15 August 2023 Mavinga

Out · last detection 12 Sept 2023, 11:38 UTC

The fire started on 15 August 2023 in Mavinga, Angola, and satellites saw it burning for 28 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 28,469 hectares from heat detections, spread across a single municipality.

It is the 22th largest in Cuando Cubango since 2016 (of 659 with a page). Number 3 in Angola in 2023, of 158.

Burnt area
28,469ha
GWIS perimeter (Copernicus)
Duration
28days
15 Aug 2023 – 11 Sept 2023
Municipalities hit
1
municipalities
Started on
15 Aug
2023
Heat detections
1,158
in a single hotspot: 139 MW
Danger at start
46
Very high · FWI index
Energy released
14.7GW
sum of detected power

Where it burned

12 Sept 2023
HOTSPOTS BY DAY 15 Aug11 Sept

How it evolved, day by day

1516171819202122232425262728293031123456789101112

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

The weather it burned in

35°high
54km/h · peak gust
11%lowest humidity

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

This area had burned before

89% of the perimeter overlaps earlier fires recorded since 2016: 11,034 ha in 2016, 3,192 ha in 2017, 9,995 ha in 2018, 4,646 ha in 2019, 1,164 ha in 2020, 14,831 ha in 2021, 2,516 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 25,373 ha that had burned before.

What happened to each town

  1. Mavinga where it started
    28,695 ha reached on 15 Aug
    0.6 %

Burnt area inside each municipality, from crossing the GWIS perimeter with administrative boundaries. The distance is from the town centre 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)

Day High Min. humidity Peak gust Rain Danger (FWI)
15 Aug 30.6 °C 14 % 34 km/h 0.0 mm Very high 46
16 Aug 30.4 °C 11 % 37 km/h 0.0 mm Very high 49
17 Aug 31.1 °C 17 % 33 km/h 0.0 mm Very high 48
18 Aug 31.9 °C 15 % 31 km/h 0.0 mm Very high 47
19 Aug 31.5 °C 14 % 31 km/h 0.0 mm Very high 47
20 Aug 32.2 °C 14 % 31 km/h 0.0 mm Very high 48
21 Aug 33.2 °C 14 % 30 km/h 0.0 mm Very high 47
22 Aug 34.3 °C 11 % 30 km/h 0.0 mm Very high 49
23 Aug 34.7 °C 11 % 22 km/h 0.0 mm Very high 48
24 Aug 34.0 °C 13 % 28 km/h 0.0 mm Very high 48
25 Aug 34.0 °C 15 % 38 km/h 0.0 mm Extreme 56
26 Aug 33.5 °C 13 % 33 km/h 0.0 mm Extreme 56
27 Aug 31.9 °C 14 % 41 km/h 0.0 mm Extreme 62
28 Aug 28.4 °C 29 % 54 km/h 0.0 mm Extreme 53
29 Aug 27.3 °C 27 % 43 km/h 0.0 mm Very high 45
30 Aug 27.2 °C 18 % 37 km/h 0.0 mm Very high 42
31 Aug 28.3 °C 17 % 32 km/h 0.0 mm Very high 40
1 Sept 31.5 °C 14 % 30 km/h 0.0 mm Very high 44
2 Sept 32.1 °C 12 % 32 km/h 0.0 mm Very high 48
3 Sept 33.1 °C 11 % 31 km/h 0.0 mm Very high 49
4 Sept 33.0 °C 12 % 34 km/h 0.0 mm Extreme 51
5 Sept 33.2 °C 12 % 32 km/h 0.0 mm Extreme 52
6 Sept 33.2 °C 16 % 35 km/h 0.0 mm Extreme 52
7 Sept 33.9 °C 14 % 29 km/h 0.0 mm Extreme 50
8 Sept 34.0 °C 14 % 43 km/h 0.0 mm Extreme 60
9 Sept 34.2 °C 13 % 38 km/h 0.0 mm Extreme 54
10 Sept 33.5 °C 12 % 29 km/h 0.0 mm Very high 50
11 Sept 34.5 °C 13 % 24 km/h 0.0 mm Very high 49
12 Sept after 27.6 °C 15 % 47 km/h 0.0 mm Extreme 60
13 Sept after 32.0 °C 18 % 40 km/h 0.0 mm Extreme 53
14 Sept after 32.8 °C 15 % 39 km/h 0.0 mm Extreme 53
15 Sept after 33.5 °C 17 % 34 km/h 0.0 mm Extreme 52
16 Sept after 33.8 °C 11 % 32 km/h 0.0 mm Very high 49
17 Sept after 34.8 °C 11 % 33 km/h 0.0 mm Extreme 53
18 Sept after 35.8 °C 12 % 40 km/h 0.0 mm Extreme 59
19 Sept after 34.3 °C 15 % 49 km/h 0.0 mm Extreme 64
20 Sept after 34.8 °C 15 % 29 km/h 0.0 mm Extreme 50
21 Sept after 35.1 °C 14 % 38 km/h 0.0 mm Extreme 54

Before and after, from space

Drag the line to compare the same ground before the fire and after it.

Before · 8 Aug 2023
After · 18 Sept 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.

Detections table · 1,158Every 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 Mavinga fire last?
GWIS (Copernicus) dates it between 15 August 2023 and 11 September 2023: 28 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 28,469 hectares (284.7 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Mavinga (28,695 ha, 0.6 %).
What was the weather like?
During the fire the temperature reached 34.7 °C, humidity dropped to 11 % and gusts hit 54 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 Angola (geoBoundaries). It is not an official report.

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

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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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.