Congosto fire, August 2025 Congosto
The fire started on 10 August 2025 in Congosto, Spain, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 127 hectares from satellite imagery, spread across a single municipality.
It is the 70th largest in León since 2016 (of 86 with a page). Number 138 in Spain in 2025, of 158.
The power measured by the satellite is low (13.9 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.
Compare with…
- Burnt area
- 127ha
- Copernicus perimeter
- Duration
- 1day
- 10 Aug 2025 – 10 Aug 2025
- Municipalities hit
- 1
- municipalities
- Started on
- 10 Aug
- 2025
- Heat detections
- 3
- in a single hotspot: 14 MW
- Danger at start
- 41
- Very high · FWI index
- Average daily power
- 34MW
- detected power per day, on average
Where it burned
How it evolved, day by day
10 Aug 2025 · 34 MW · 3
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 28 days without rain (1 mm or more) when it started. Rain came after the fire: 1.6 mm on 12 Aug.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
What happened to each town
-
127 ha reached on 10 Aug3.4 %
Burnt area inside each municipality, from crossing the official 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.
What burned
- Agricultural areas91 %
- Broadleaved forest5.6 %
- Artificial surfaces3.2 %
Land cover inside the perimeter according to Corine Land Cover, as reported by Copernicus.
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) |
|---|---|---|---|---|---|
| 10 Aug | 37.2 °C | 20 % | 32 km/h | 0.0 mm | Very high 41 |
| 11 Aug after | 35.4 °C | 22 % | 43 km/h | 0.6 mm | Very high 40 |
| 12 Aug after | 34.7 °C | 23 % | 43 km/h | 1.6 mm | High 30 |
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 12 August 2025 the air beside the fire reached 37 µg/m³ of PM2.5. That day averaged 24: 1.6 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 · 3Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 26,241 haLlamas de Cabrera PonferradaAugust 2025 · 14 days · 22 km away
- 4,416 haPuente de Domingo FlórezAugust 2025 · 4 days · 25 km away
- 2,434 haPeranzanesSeptember 2016 · 7 days · 27 km away
- 7,070 haFasgar Murias de ParedesAugust 2025 · 15 days · 30 km away
- 8,001 haAnllares del Sil Páramo del SilAugust 2025 · 12 days · 31 km away
- 3,619 haLuyego28 August 2022 · 5 days · 32 km away
Frequently asked questions
- How long did the Congosto fire last?
- Copernicus dates it between 10 August 2025 and 10 August 2025: 1 day between the first and last image with fire.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 127 hectares (1.3 km²). Official national figures may differ.
- Which municipalities burned?
- The fire only entered Congosto (127 ha, 3.4 %).
- Did the fire reach a town?
- The fire started in Congosto and came within 2.7 km of its centre. That is the distance from the perimeter, or the nearest hotspot, to the point marking the centre; it does not mean it entered the houses.
- What was the weather like?
- During the fire the temperature reached 37.2 °C, humidity dropped to 20 % and gusts hit 32 km/h. The fire danger index (FWI) reached 41, class Very high.
- Where does this data come from?
- From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Spain (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.
Emergency number: 112 · Emergency number and official warnings ›
Satellite cross-check
History of this page Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
No changes since 24 October 2026.
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: EFFIS (Copernicus), mapped on satellite imagery.
- Dates from the perimeter: the VIIRS detections inside it did not change them. 3 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.
Where this data comes from
The perimeter and land cover come from the Copernicus European Forest Fire Information System (EFFIS), measured on MODIS and Sentinel-2 imagery and published under CC BY 4.0. 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 International (CC BY 4.0)). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ slightly from each country’s official figure.