Cuilo fire, 2 July 2021 Cuilo
The fire started on 2 July 2021 in Cuilo, Angola, and satellites saw it burning for 4 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 5,830 hectares from heat detections, spread across a single municipality.
It is the 285th largest in Lunda Norte since 2016 (of 411 with a page). Number 92 in Angola in 2021, of 126.
- Burnt area
- 5,830ha
- GWIS perimeter (Copernicus)
- Duration
- 4days
- 2 Jul 2021 – 5 Jul 2021
- Municipalities hit
- 1
- municipalities
- Started on
- 2 Jul
- 2021
- Heat detections
- 214
- in a single hotspot: 330 MW
- Danger at start
- 43
- Very high · FWI index
- Energy released
- 16.3GW
- 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 56 days without rain (1 mm or more) when it started.
This area had burned before
70% of the perimeter overlaps earlier fires recorded since 2016: 1,231 ha in 2016, 237 ha in 2017, 3,213 ha in 2018, 1,592 ha in 2020. Part of it burned more than once, so the yearly figures add up to more than the 4,057 ha that had burned before.
What happened to each town
-
Cuilo where it started5,872 ha reached on 2 Jul0.6 %
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) |
|---|---|---|---|---|---|
| 2 Jul | 31.1 °C | 17 % | 41 km/h | 0.0 mm | Very high 43 |
| 3 Jul | 31.2 °C | 15 % | 38 km/h | 0.0 mm | Very high 45 |
| 4 Jul | 31.3 °C | 17 % | 36 km/h | 0.0 mm | Very high 44 |
| 5 Jul | 30.5 °C | 19 % | 37 km/h | 0.0 mm | Very high 44 |
| 6 Jul after | 29.9 °C | 19 % | 32 km/h | 0.0 mm | Very high 43 |
| 7 Jul after | 30.2 °C | 18 % | 36 km/h | 0.0 mm | Very high 44 |
| 8 Jul after | 29.6 °C | 20 % | 38 km/h | 0.0 mm | Very high 45 |
| 9 Jul after | 31.1 °C | 20 % | 38 km/h | 0.0 mm | Very high 45 |
| 10 Jul after | 30.4 °C | 18 % | 38 km/h | 0.0 mm | Very high 47 |
| 11 Jul after | 30.4 °C | 17 % | 40 km/h | 0.0 mm | Very high 47 |
| 12 Jul after | 30.4 °C | 17 % | 39 km/h | 0.0 mm | Very high 47 |
| 13 Jul after | 30.5 °C | 19 % | 32 km/h | 0.0 mm | Very high 44 |
| 14 Jul after | 30.5 °C | 19 % | 32 km/h | 0.0 mm | Very high 43 |
| 15 Jul after | 31.8 °C | 22 % | 46 km/h | 0.0 mm | Very high 50 |
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 · 214Every 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 Cuilo fire last?
- GWIS (Copernicus) dates it between 2 July 2021 and 5 July 2021: 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 5,830 hectares (58.3 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Cuilo (5,872 ha, 0.6 %).
- What was the weather like?
- During the fire the temperature reached 31.3 °C, humidity dropped to 15 % and gusts hit 41 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.