Fasgar fire, August 2025 Murias de Paredes, Igüeña, Palacios del Sil
The fire started on 14 August 2025 in Murias de Paredes, Spain, and satellites saw it burning for 15 days. Copernicus mapped a burnt perimeter of 7,070 hectares from satellite imagery, spread across 3 municipalities.
It is the 6th largest in León since 2016 (of 86 with a page). Number 12 in Spain in 2025, of 158.
Compare with…
- Burnt area
- 7,070ha
- Copernicus perimeter
- Duration
- 15days
- 14 Aug 2025 – 28 Aug 2025
- Municipalities hit
- 3
- municipalities
- Started on
- 14 Aug
- 2025
- Heat detections
- 838
- in a single hotspot: 317 MW
- Danger at start
- 18
- Moderate · FWI index
- Average daily power
- 1.2GW
- 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 7 days without rain (1 mm or more) when it started. Rain came after the fire: 5.2 mm on 29 Aug.
This area had burned before
2% of the perimeter overlaps earlier fires recorded since 2016: 141 ha in 2022.
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
Madrid boundary: geoBoundaries · Open Data ESRI, IGN Central Registry of Cartography Area (CC BY 4.0).
Paris boundary: geoBoundaries · Institut national de l'information géographique et forestière (IGN-F) (Etalab Open License 2.0).
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
-
4,144 ha reached on 15 Aug20 %
-
Igüeña 1,012 inhabitants · fire reached the centre2,577 ha reached on 19 Aug13 %
-
Palacios del Sil 1,141 inhabitants · 17.9 km from the centre352 ha reached on 14 Aug1.9 %
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
- Other natural land73 %
- Broadleaved forest21 %
- Scrub and transitional woodland5.3 %
- Agricultural areas1.2 %
Natura 2000 protected area affected: 70 %
Natura 2000 sites (European Environment Agency, 2024 release) crossed by the perimeter.
Land cover inside the perimeter according to Corine Land Cover, as reported by Copernicus.
Checked against the press
Checked on 29 September 2026We checked this page against 4 sources published once the fire was out. This is what they add:
- Also known as
- Fasgar-Colinas del Campo · incendio de Fasgar · incendio de Colinas
- According to the sources, several fires that ended up merging:
- Fasgar (Murias de Paredes, valle de Omaña) 8 August 2025
- Colinas del Campo de Martín Moro (Igüeña) 20 August 2025
- Declared extinguished: 14 October 2025
Sources
- Tres meses de los peores incendios jamás sufridos en León: 4.450 kms arrasados en 13 'infiernos' y aún sin recuento oficial — ILEON (elDiario.es), 8 November 2025
- Las llamas se apagan en Fasgar en León tras dos meses ardiendo: la Junta da por extinguido el incendio — Diario de Castilla y León, 14 October 2025
- El incendio más largo del verano en León se da por sofocado: Fasgar apaga sus llamas tras casi dos meses de lucha — Heraldo de León, 6 October 2025
- El mapa de los incendios en León: por primera vez en 35 días no hay ningún foco sin controlar — Leonoticias, 13 September 2025
Official figures are measured differently from satellite ones and sometimes cover only part of the fire.
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) |
|---|---|---|---|---|---|
| 21 Aug | 16.9 °C | 40 % | 30 km/h | 0.1 mm | Moderate 18 |
| 22 Aug | 20.6 °C | 31 % | 24 km/h | 0.2 mm | Moderate 17 |
| 23 Aug | 21.7 °C | 21 % | 40 km/h | 0.0 mm | High 24 |
| 24 Aug | 22.6 °C | 25 % | 39 km/h | 0.0 mm | High 27 |
| 25 Aug | 23.7 °C | 25 % | 36 km/h | 0.0 mm | High 30 |
| 26 Aug | 20.9 °C | 29 % | 44 km/h | 0.0 mm | High 29 |
| 27 Aug | 13.6 °C | 47 % | 45 km/h | 0.0 mm | High 22 |
| 28 Aug | 11.8 °C | 43 % | 48 km/h | 0.8 mm | Moderate 19 |
| 29 Aug after | 11.0 °C | 63 % | 60 km/h | 5.2 mm | Very low 4 |
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 20 August 2025 the air beside the fire reached 221 µg/m³ of PM2.5. That day averaged 79: 5.3 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 · 838Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 1,966 haValdesamario22 July 2026 · 5 days · 19 km away
- 8,001 haAnllares del Sil Páramo del SilAugust 2025 · 12 days · 29 km away
- 4,285 haVillablinoAugust 2025 · 11 days · 29 km away
- 2,434 haPeranzanesSeptember 2016 · 7 days · 31 km away
- 1,550 haDegañaOctober 2017 · 5 days · 35 km away
- 1,546 haSoto y AmíoAugust 2025 · 3 days · 35 km away
Frequently asked questions
- How long did the Fasgar fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 14 August 2025 to 28 August 2025 (15 days). The perimeter dates it from 21 August 2025 to 28 August 2025.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 7,070 hectares (70.7 km²). Official national figures may differ.
- Which municipalities burned?
- The fire entered 3 municipalities: Murias de Paredes (4,144 ha, 20 %); Igüeña (2,577 ha, 13 %); Palacios del Sil (352 ha, 1.9 %).
- Did the fire reach a town?
- The fire reached the centre of Igüeña: the point marking it was inside the burnt area or less than 500 metres from it. That does not mean houses burned.
- What was the weather like?
- During the fire the temperature reached 23.7 °C, humidity dropped to 21 % and gusts hit 48 km/h. The fire danger index (FWI) reached 30, class 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 adjusted with the VIIRS detections inside the perimeter, which said 21 August 2025 to 28 August 2025. 838 Suomi-NPP VIIRS detections on those dates.
- We have not matched this page with any official record.
- Checked against news and agencies: 4 confirmed sources.
- 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.