Lalgaye fire, December 2017 Lalgaye, Ouargaye, Bané
The fire started on 22 December 2017 in Lalgaye, Burkina Faso, and satellites saw it burning for 7 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 2,680 hectares from heat detections, spread across 3 municipalities.
It is the 25th largest in Nakambé since 2016 (of 116 with a page). Number 21 in Burkina Faso in 2017, of 149.
The power measured by the satellite is low (10.2 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.
- Burnt area
- 2,680ha
- GWIS perimeter (Copernicus)
- Duration
- 7days
- 22 Dec 2017 – 28 Dec 2017
- Municipalities hit
- 3
- communes
- Started on
- 22 Dec
- 2017
- Heat detections
- 78
- in a single hotspot: 10 MW
- Danger at start
- 46
- Very high · FWI index
- Energy released
- 266MW
- 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 more than two months without rain (1 mm or more) when it started.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
What happened to each town
-
Lalgaye where it started2,486 ha reached on 22 Dec4.8 %
-
210 ha reached on 28 Dec0.4 %
-
0 ha0.0 %
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) |
|---|---|---|---|---|---|
| 22 Dec | 29.6 °C | 20 % | 33 km/h | 0.0 mm | Very high 46 |
| 23 Dec | 30.4 °C | 17 % | 33 km/h | 0.0 mm | Very high 47 |
| 24 Dec | 30.8 °C | 22 % | 33 km/h | 0.0 mm | Very high 46 |
| 25 Dec | 31.7 °C | 21 % | 34 km/h | 0.0 mm | Very high 46 |
| 26 Dec | 33.1 °C | 22 % | 36 km/h | 0.0 mm | Very high 48 |
| 27 Dec | 33.3 °C | 22 % | 30 km/h | 0.0 mm | Very high 44 |
| 28 Dec | 33.7 °C | 21 % | 29 km/h | 0.0 mm | Very high 44 |
| 29 Dec after | 33.2 °C | 19 % | 33 km/h | 0.0 mm | Very high 46 |
| 30 Dec after | 32.7 °C | 16 % | 41 km/h | 0.0 mm | Extreme 53 |
| 31 Dec after | 31.7 °C | 15 % | 44 km/h | 0.0 mm | Extreme 54 |
| 1 Jan after | 31.6 °C | 15 % | 43 km/h | 0.0 mm | Extreme 54 |
| 2 Jan after | 31.0 °C | 16 % | 39 km/h | 0.0 mm | Extreme 52 |
| 3 Jan after | 30.7 °C | 17 % | 36 km/h | 0.0 mm | Very high 50 |
| 4 Jan after | 31.7 °C | 14 % | 37 km/h | 0.0 mm | Extreme 51 |
| 5 Jan after | 32.0 °C | 12 % | 40 km/h | 0.0 mm | Extreme 55 |
| 6 Jan after | 32.0 °C | 14 % | 31 km/h | 0.0 mm | Very high 47 |
| 7 Jan after | 33.6 °C | 16 % | 24 km/h | 0.0 mm | Very high 44 |
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 · 78Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 4,621 haLalgaye11 November 2025 · 10 days · 14 km away
- 4,242 haBitou28 October 2025 · 11 days · 22 km away
- 4,419 haYargatenga2 November 2025 · 9 days · 28 km away
- 8,062 haOuargaye8 November 2025 · 17 days · 32 km away
- 5,872 haYondé10 November 2025 · 11 days · 32 km away
- 4,451 haYondéDecember 2023 · 4 days · 33 km away
Frequently asked questions
- How long did the Lalgaye fire last?
- GWIS (Copernicus) dates it between 22 December 2017 and 28 December 2017: 7 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 2,680 hectares (26.8 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 3 municipalities: Lalgaye (2,486 ha, 4.8 %); Ouargaye (210 ha, 0.4 %); Bané (0 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 33.7 °C, humidity dropped to 17 % and gusts hit 36 km/h. The fire danger index (FWI) reached 48, class Very high.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Burkina Faso (OCHA COD-AB). 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 OCHA COD-AB (Institut Geographique Burkina (IGB)) (Creative Commons Attribution for Intergovernmental Organisations (CC BY-IGO)). 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.