Llanes fire, April 2017 Llanes
The fire started on 19 April 2017 in Llanes, Spain, and satellites saw it burning for 2 days. Copernicus mapped a burnt perimeter of 418 hectares from satellite imagery, spread across a single municipality. According to EGIF (MITECO), the largest of the 5 recorded fires was detected on 18 April 2017 at 23:34 and declared extinguished on 20 April 2017.
It is the 33th largest in Asturias since 2016 (of 225 with a page). Number 59 in Spain in 2017, of 144.
The power measured by the satellite is low (15.8 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.
- Burnt area
- 418ha
- Copernicus perimeter
- Duration
- 2days
- 19 Apr 2017 – 20 Apr 2017
- Municipalities hit
- 1
- municipalities
- Started on
- 19 Apr
- 2017
- Heat detections
- 22
- in a single hotspot: 16 MW
- Danger at start
- 5
- Very low · FWI index
- Energy released
- 146MW
- 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.
The weather it burned in
It had gone 3 days without rain (1 mm or more) when it started. Rain came after the fire: 12.0 mm on 25 Apr.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
What happened to each town
-
419 ha reached on 19 Apr1.6 %
Burnt area inside each municipality, from crossing the official 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.
What burned
- Other natural land95 %
- Broadleaved forest4.8 %
Natura 2000 protected area affected: 1 %
- LIC Río Purón ES1200034
- LIC Sierra Plana de la Borbolla ES1200042
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), 5 fires started inside this perimeter on these dates, totalling 469 ha (the satellite measured 418 ha).
- Llanes Sierra de Puron 18 April 2017 · 23:34 291 ha · extinguished on 20 April 2017 · cause: arson
- Llanes Cuera 19 April 2017 · 17:04 140 ha · extinguished on 19 April 2017 · cause: arson
- Llanes Pico Castiello 18 April 2017 · 21:21 25 ha · extinguished on 18 April 2017 · cause: arson
- Llanes San Roque del Acebal 19 April 2017 · 09:37 8 ha · extinguished on 19 April 2017 · cause: arson
- Llanes La Pereda 20 April 2017 · 18:31 5 ha · extinguished on 22 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) |
|---|---|---|---|---|---|
| 19 Apr | 13.1 °C | 54 % | 62 km/h | 0.0 mm | Very low 5 |
| 20 Apr | 13.1 °C | 57 % | 65 km/h | 0.0 mm | Low 6 |
| 21 Apr after | 15.7 °C | 62 % | 46 km/h | 0.0 mm | Very low 4 |
| 22 Apr after | 17.1 °C | 57 % | 25 km/h | 0.0 mm | Very low 4 |
| 23 Apr after | 16.4 °C | 73 % | 31 km/h | 0.0 mm | Very low 4 |
| 24 Apr after | 16.1 °C | 74 % | 28 km/h | 0.4 mm | Very low 4 |
| 25 Apr after | 14.0 °C | 82 % | 34 km/h | 12.0 mm | Very low 0 |
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 23 April 2017 the air beside the fire reached 25 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 · 22Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
Frequently asked questions
- How long did the Llanes fire last?
- Copernicus dates it between 19 April 2017 and 20 April 2017: 2 days between the first and last image with fire. According to EGIF (MITECO), the largest of the 5 recorded fires was detected on 18 April 2017 at 23:34 and declared extinguished on 20 April 2017.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 418 hectares (4.2 km²). Official national figures may differ.
- Which municipalities burned?
- The fire only entered Llanes (419 ha, 1.6 %).
- Did the fire reach a town?
- The closest fire to a town centre came within 3.1 km of Llanes. That is the distance to the perimeter or nearest hotspot; it does not mean it entered the houses.
- What was the weather like?
- During the fire the temperature reached 13.1 °C, humidity dropped to 54 % and gusts hit 65 km/h. The fire danger index (FWI) reached 6, class Low.
- 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
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 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.