Lac Iro fire, 24 December 2025 Lac Iro
The fire started on 24 December 2025 in Lac Iro, Chad, and satellites saw it burning for 33 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 8,437 hectares from heat detections, spread across a single municipality.
It is the 6th largest in Moyen-Chari since 2016 (of 225 with a page). Number 20 in Chad in 2025, of 274.
Compare with…
- Burnt area
- 8,437ha
- GWIS perimeter (Copernicus)
- Duration
- 33days
- 24 Dec 2025 – 25 Jan 2026
- Municipalities hit
- 1
- departments
- Started on
- 24 Dec
- 2025
- Heat detections
- 210
- in a single hotspot: 36 MW
- Danger at start
- 45
- Very high · FWI index
- Average daily power
- 65MW
- detected power per day, on average
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
71% of the perimeter overlaps earlier fires recorded since 2016: 1,392 ha in 2016, 2,823 ha in 2017, 2,911 ha in 2018. Part of it burned more than once, so the yearly figures add up to more than the 6,015 ha that had burned before.
- 2,518 ha Lac Iro fire, December 2018 3,845 ha in total; the hectares shown are those it shares with this fire
- 1,165 ha Lac Iro fire, December 2017 2,323 ha in total; the hectares shown are those it shares with this fire
- 1,155 ha Lac Iro fire, December 2017 4,476 ha in total; the hectares shown are those it shares with this fire
- 478 ha Lac Iro fire, December 2017 4,000 ha in total; the hectares shown are those it shares with this fire
- 393 ha Lac Iro fire, December 2018 3,001 ha in total; the hectares shown are those it shares with this fire
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
Paris boundary: geoBoundaries · Institut national de l'information géographique et forestière (IGN-F) (Etalab Open License 2.0).
Madrid boundary: geoBoundaries · Open Data ESRI, IGN Central Registry of Cartography Area (CC BY 4.0).
Berlin boundary: geoBoundaries · Federal Agency for Cartography and Geodesy (dl-de/by-2-0).
This compares size, not location: both shapes are at the same scale, north up, centred on each other.
What happened to each town
-
Lac Iro where it started8,485 ha reached on 24 Dec0.5 %
Burnt area inside each municipality, from crossing the GWIS perimeter with administrative boundaries. The distance runs from the point marking the centre of each area to the nearest fire: staying a kilometre away does not mean it reached the houses.
People and buildings inside the perimeter
GHSL 2025Inside the perimeter there was no noticeable built-up land and almost nobody lived there (GHSL 2025, satellite-based estimate).
This is an estimate on 100 m cells, made from satellite imagery and census data: it does not mean that homes burned or that anyone was harmed. The perimeter also contains land that never burned. The GHSL 2025 epoch is a projection made from 2020 and earlier data.
Source: Global Human Settlement Layer (GHS-BUILT-S and GHS-POP R2023A), European Commission Joint Research Centre (JRC), © European Union, CC BY 4.0. Sum inside the perimeter computed by WorldFires. human-settlement.emergency.copernicus.eu
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) |
|---|---|---|---|---|---|
| 24 Dec | 36.7 °C | 15 % | 23 km/h | 0.0 mm | Very high 45 |
| 25 Dec | 36.7 °C | 14 % | 30 km/h | 0.0 mm | Extreme 51 |
| 26 Dec | 37.1 °C | 14 % | 30 km/h | 0.0 mm | Extreme 50 |
| 27 Dec | 37.2 °C | 14 % | 28 km/h | 0.0 mm | Very high 48 |
| 28 Dec | 36.2 °C | 14 % | 25 km/h | 0.0 mm | Very high 46 |
| 29 Dec | 35.7 °C | 12 % | 31 km/h | 0.0 mm | Extreme 52 |
| 30 Dec | 35.1 °C | 19 % | 22 km/h | 0.0 mm | Very high 47 |
| 31 Dec | 36.0 °C | 15 % | 27 km/h | 0.0 mm | Very high 47 |
| 1 Jan | 36.2 °C | 13 % | 29 km/h | 0.0 mm | Very high 50 |
| 2 Jan | 36.2 °C | 12 % | 27 km/h | 0.0 mm | Very high 49 |
| 3 Jan | 36.4 °C | 12 % | 32 km/h | 0.0 mm | Extreme 52 |
| 4 Jan | 36.5 °C | 12 % | 30 km/h | 0.0 mm | Extreme 51 |
| 5 Jan | 37.1 °C | 13 % | 31 km/h | 0.0 mm | Extreme 52 |
| 6 Jan | 37.2 °C | 13 % | 34 km/h | 0.0 mm | Extreme 55 |
| 7 Jan | 37.2 °C | 12 % | 33 km/h | 0.0 mm | Extreme 54 |
| 8 Jan | 36.3 °C | 12 % | 30 km/h | 0.0 mm | Extreme 52 |
| 9 Jan | 37.2 °C | 11 % | 28 km/h | 0.0 mm | Extreme 52 |
| 10 Jan | 35.3 °C | 16 % | 37 km/h | 0.0 mm | Extreme 58 |
| 11 Jan | 34.5 °C | 17 % | 28 km/h | 0.0 mm | Very high 50 |
| 12 Jan | 35.2 °C | 14 % | 32 km/h | 0.0 mm | Extreme 52 |
| 13 Jan | 35.6 °C | 15 % | 36 km/h | 0.0 mm | Extreme 58 |
| 14 Jan | 36.0 °C | 13 % | 45 km/h | 0.0 mm | Extreme 64 |
| 15 Jan | 34.8 °C | 14 % | 42 km/h | 0.0 mm | Extreme 62 |
| 16 Jan | 35.1 °C | 11 % | 40 km/h | 0.0 mm | Extreme 60 |
| 17 Jan | 35.4 °C | 14 % | 28 km/h | 0.0 mm | Extreme 51 |
| 18 Jan | 36.4 °C | 13 % | 32 km/h | 0.0 mm | Extreme 55 |
| 19 Jan | 36.6 °C | 11 % | 32 km/h | 0.0 mm | Extreme 54 |
| 20 Jan | 36.8 °C | 13 % | 35 km/h | 0.0 mm | Extreme 57 |
| 21 Jan | 37.4 °C | 13 % | 31 km/h | 0.0 mm | Extreme 53 |
| 22 Jan | 37.4 °C | 16 % | 17 km/h | 0.0 mm | Extreme 51 |
| 23 Jan | 37.3 °C | 13 % | 24 km/h | 0.0 mm | Extreme 52 |
| 24 Jan | 37.2 °C | 14 % | 28 km/h | 0.0 mm | Extreme 53 |
| 25 Jan | 38.6 °C | 15 % | 24 km/h | 0.0 mm | Extreme 55 |
| 26 Jan after | 38.1 °C | 13 % | 29 km/h | 0.0 mm | Extreme 56 |
| 27 Jan after | 38.4 °C | 8 % | 24 km/h | 0.0 mm | Extreme 54 |
| 28 Jan after | 38.1 °C | 13 % | 39 km/h | 0.0 mm | Extreme 66 |
| 29 Jan after | 36.4 °C | 13 % | 36 km/h | 0.0 mm | Extreme 62 |
| 30 Jan after | 37.5 °C | 13 % | 28 km/h | 0.0 mm | Extreme 56 |
| 31 Jan after | 38.0 °C | 13 % | 25 km/h | 0.0 mm | Extreme 54 |
| 1 Feb after | 37.6 °C | 12 % | 23 km/h | 0.0 mm | Extreme 52 |
| 2 Feb after | 38.0 °C | 14 % | 24 km/h | 0.0 mm | Extreme 54 |
| 3 Feb after | 38.7 °C | 17 % | 38 km/h | 0.0 mm | Extreme 63 |
| 4 Feb after | 39.0 °C | 10 % | 39 km/h | 0.0 mm | Extreme 63 |
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.
The smoke
CAMS · CopernicusOn 15 January 2026 the air beside the fire reached 42 µg/m³ of PM2.5. That day averaged 33: 2.2 times the WHO daily guideline (15).
Particles from the Copernicus CAMS model at the centre of the perimeter; these are not measurements in each town. The pale bar is the worst hour, the solid one the daily average.
Open-Meteo.com (CC BY 4.0) · Copernicus Atmosphere Monitoring Service (CAMS)
Detections table · 210Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 4,476 haLac Iro21 December 2017 · 4 days · 4 km away
- 3,845 haLac Iro17 December 2018 · 16 days · 4 km away
- 4,000 haLac Iro20 December 2017 · 5 days · 9 km away
- 4,115 haLac Iro8 January 2026 · 18 days · 19 km away
- 3,298 haLac Iro9 January 2026 · 26 days · 21 km away
- 4,384 haLac Iro21 December 2016 · 14 days · 25 km away
Frequently asked questions
- How long did the Lac Iro fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 24 December 2025 to 25 January 2026 (33 days). The perimeter dates it from 31 December 2025 to 18 January 2026.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 8,437 hectares (84.4 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Lac Iro (8,485 ha, 0.5 %).
- What was the weather like?
- During the fire the temperature reached 38.6 °C, humidity dropped to 11 % and gusts hit 45 km/h. The fire danger index (FWI) reached 64, class Extreme.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Chad (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
History of this page · 2 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
- Last day with fire: 18 January 2026 → 25 January 2026.
- Start date: 31 December 2025 → 24 December 2025.
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
How we know this
- Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery.
- Dates adjusted with the VIIRS detections inside the perimeter, which said 31 December 2025 to 18 January 2026. 210 Suomi-NPP VIIRS detections on those dates.
- We have not matched this page with any official record.
- Weather: Copernicus ERA5 reanalysis at the fire location, in cells of about 25 km.
- Built-up area and population come from the JRC Global Human Settlement Layer (epoch 2025, 100 m cells), summed inside the perimeter: an estimate of what was there, not a damage count.
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 (Creative Commons Attribution 3.0 Intergovernmental Organisations (CC BY 3.0 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.