Cacuso fire, July 2023 Cacuso
The fire started on 2 July 2023 in Cacuso, Angola, and satellites saw it burning for 4 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 5,158 hectares from heat detections, spread across a single municipality.
It is the 118th largest in Malanje since 2016 (of 127 with a page). Number 149 in Angola in 2023, of 158.
- Burnt area
- 5,158ha
- GWIS perimeter (Copernicus)
- Duration
- 4days
- 2 Jul 2023 – 5 Jul 2023
- Municipalities hit
- 1
- municipalities
- Started on
- 2 Jul
- 2023
- Heat detections
- 153
- in a single hotspot: 282 MW
- Danger at start
- 40
- Very high · FWI index
- Energy released
- 5.9GW
- sum of detected power
Where it burned
How it evolved, day by day
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
It had gone 31 days without rain (1 mm or more) when it started.
This area had burned before
73% of the perimeter overlaps earlier fires recorded since 2016: 1,509 ha in 2016, 665 ha in 2017, 1,338 ha in 2018, 523 ha in 2019, 150 ha in 2020, 813 ha in 2021, 1,130 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 3,784 ha that had burned before.
What happened to each town
-
Cacuso where it started5,193 ha reached on 28 Jun0.8 %
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) |
|---|---|---|---|---|---|
| 2 Jul | 31.2 °C | 21 % | 42 km/h | 0.0 mm | Very high 40 |
| 3 Jul | 30.6 °C | 18 % | 45 km/h | 0.0 mm | Very high 45 |
| 4 Jul | 29.3 °C | 22 % | 42 km/h | 0.0 mm | Very high 44 |
| 5 Jul | 29.7 °C | 26 % | 40 km/h | 0.0 mm | Very high 42 |
| 6 Jul after | 30.3 °C | 25 % | 28 km/h | 0.1 mm | Very high 38 |
| 7 Jul after | 30.7 °C | 21 % | 41 km/h | 0.0 mm | Very high 42 |
| 8 Jul after | 29.4 °C | 23 % | 39 km/h | 0.1 mm | Very high 42 |
| 9 Jul after | 30.0 °C | 21 % | 29 km/h | 0.1 mm | Very high 40 |
| 10 Jul after | 30.1 °C | 21 % | 29 km/h | 0.0 mm | Very high 39 |
| 11 Jul after | 28.9 °C | 22 % | 54 km/h | 0.0 mm | Extreme 50 |
| 12 Jul after | 28.3 °C | 20 % | 49 km/h | 0.0 mm | Very high 48 |
| 13 Jul after | 29.8 °C | 22 % | 44 km/h | 0.0 mm | Very high 46 |
| 14 Jul after | 31.5 °C | 23 % | 31 km/h | 0.0 mm | Very high 42 |
| 15 Jul after | 31.2 °C | 25 % | 32 km/h | 0.0 mm | Very high 43 |
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
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 · 153Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
Frequently asked questions
- How long did the Cacuso fire last?
- GWIS (Copernicus) dates it between 2 July 2023 and 5 July 2023: 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 5,158 hectares (51.6 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Cacuso (5,193 ha, 0.8 %).
- What was the weather like?
- During the fire the temperature reached 31.2 °C, humidity dropped to 18 % and gusts hit 45 km/h. The fire danger index (FWI) reached 45, 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.
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.
Report an error
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.