Ibias fire, 20 April 2017 Ibias, Cangas del Narcea
The fire started on 20 April 2017 in Ibias, Spain, and satellites saw it burning for 3 days. Copernicus mapped a burnt perimeter of 594 hectares from satellite imagery, spread across 2 municipalities. According to EGIF (MITECO), it was detected on 20 April 2017 at 23:10 and declared extinguished on 24 April 2017.
It is the 18th largest in Asturias since 2016 (of 225 with a page). Number 46 in Spain in 2017, of 144.
Compare with…
- Burnt area
- 594ha
- Copernicus perimeter
- Duration
- 3days
- 20 Apr 2017 – 22 Apr 2017
- Municipalities hit
- 2
- municipalities
- Started on
- 20 Apr
- 2017
- Heat detections
- 74
- in a single hotspot: 97 MW
- Danger at start
- 13
- Moderate · FWI index
- Average daily power
- 809MW
- 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 18 days without rain (1 mm or more) when it started. Rain came after the fire: 1.0 mm on 24 Apr.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
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
-
571 ha reached on 21 Apr1.7 %
-
Cangas del Narcea 11,282 inhabitants · 23.8 km from the centre23 ha reached on 21 Apr0.0 %
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 land98 %
- Broadleaved forest1.5 %
Natura 2000 protected area affected: 1 %
- ZEPA + LIC Muniellos ES1200002
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.
Official record
According to EGIF (MITECO), this fire started on 20 April 2017 and burned 648 ha (the satellite measured 594 ha).
- Ibias A Cortia de Arriba 20 April 2017 · 23:10 648 ha · extinguished on 24 April 2017 · cause: arson
MITECO, Estadística General de Incendios Forestales (EGIF). This is the agency’s consolidated statistic: it measures the area in its own way, which is why it can differ from the satellite.
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) |
|---|---|---|---|---|---|
| 20 Apr | 18.8 °C | 27 % | 46 km/h | 0.0 mm | Moderate 13 |
| 21 Apr | 20.7 °C | 19 % | 31 km/h | 0.0 mm | Moderate 14 |
| 22 Apr | 20.3 °C | 29 % | 30 km/h | 0.0 mm | Moderate 16 |
| 23 Apr after | 20.4 °C | 29 % | 30 km/h | 0.2 mm | Moderate 16 |
| 24 Apr after | 19.2 °C | 37 % | 37 km/h | 1.0 mm | Low 9 |
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 22 April 2017 the air beside the fire reached 33 µg/m³ of PM2.5. That day averaged 19: 1.3 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 · 74Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 3,251 haIbias15 October 2017 · 3 days · 11 km away
- 8,001 haAnllares del Sil Páramo del SilAugust 2025 · 12 days · 18 km away
- 2,985 haIbias15 October 2017 · 3 days · 18 km away
- 2,434 haPeranzanesSeptember 2016 · 7 days · 21 km away
- 1,627 haCervantes13 October 2017 · 5 days · 29 km away
- 4,285 haVillablinoAugust 2025 · 11 days · 30 km away
Frequently asked questions
- How long did the Ibias fire last?
- Copernicus dates it between 20 April 2017 and 22 April 2017: 3 days between the first and last image with fire. According to EGIF (MITECO), it was detected on 20 April 2017 at 23:10 and declared extinguished on 24 April 2017.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 594 hectares (5.9 km²). Official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Ibias (571 ha, 1.7 %); Cangas del Narcea (23 ha, 0.0 %).
- Did the fire reach a town?
- The fire started in Ibias and came within 6.7 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 20.7 °C, humidity dropped to 19 % and gusts hit 46 km/h. The fire danger index (FWI) reached 16, class Moderate.
- 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. 74 Suomi-NPP VIIRS detections on those dates.
- Compared with EGIF (MITECO): 648 official ha against 594 ha of perimeter; they agree within 25%.
- 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.