Valunia fire, April 2017 Valunia, Komboya
The fire started on 3 April 2017 in Valunia, Sierra Leone, and satellites saw it burning for 2 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 1,300 hectares from heat detections, spread across 2 municipalities.
It is the 204th largest in Southern since 2016 (of 393 with a page). Number 127 in Sierra Leone in 2017, of 207.
- Burnt area
- 1,300ha
- GWIS perimeter (Copernicus)
- Duration
- 2days
- 3 Apr 2017 – 4 Apr 2017
- Municipalities hit
- 2
- chiefdoms
- Started on
- 3 Apr
- 2017
- Heat detections
- 36
- in a single hotspot: 105 MW
- Energy released
- 835MW
- 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.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
What happened to each town
-
Valunia where it started1,159 ha reached on 3 Apr1.4 %
-
149 ha reached on 3 Apr0.6 %
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.
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 · 36Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 20,541 haNiawa LengaMarch 2026 · 14 days · 15 km away
- 7,099 haValunia27 March 2016 · 14 days · 16 km away
- 7,934 haValunia3 March 2019 · 19 days · 18 km away
- 6,967 haKamajei16 March 2026 · 22 days · 30 km away
- 6,054 haSimbaru14 April 2022 · 6 days · 37 km away
- 5,643 haBadjia29 March 2026 · 9 days · 37 km away
Frequently asked questions
- How long did the Valunia fire last?
- GWIS (Copernicus) dates it between 3 April 2017 and 4 April 2017: 2 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 1,300 hectares (13.0 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Valunia (1,159 ha, 1.4 %); Komboya (149 ha, 0.6 %).
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Sierra Leone (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 ADM3 (Creative Commons Attribution 4.0 (CC BY 4.0)). 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.