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Truchas fire, March 2019 Truchas

Out · last detection 4 Mar 2019, 02:05 UTC

The fire started on 4 March 2019 in Truchas, Spain, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 144 hectares from satellite imagery, spread across a single municipality.

It is the 63th largest in León since 2016 (of 86 with a page). Number 67 in Spain in 2019, of 102.

The power measured by the satellite is low (8.2 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
144ha
Copernicus perimeter
Duration
1day
4 Mar 2019 – 4 Mar 2019
Municipalities hit
1
municipalities
Started on
4 Mar
2019
Heat detections
2
in a single hotspot: 8 MW
Danger at start
8
Low · FWI index
Average daily power
16MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 4 Mar4 Mar

How it evolved, day by day

4 Mar 2019 · 16 MW · 2

Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.

The weather it burned in

7°high
58km/h · peak gust
43%lowest humidity

It had gone 13 days without rain (1 mm or more) when it started. Rain came after the fire: 2.1 mm on 5 Mar.

This area had burned before

No earlier perimeters overlap this fire since 2016, when the satellite record begins.

What happened to each town

  1. Truchas 371 inhabitants · 12.6 km from the centre where it started
    144 ha reached on 4 Mar
    0.5 %

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 land90 %
  • Broadleaved forest9.8 %

Natura 2000 protected area affected: 100 %

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 3 March 2019 and burned 202 ha (the satellite measured 144 ha). The two figures differ a lot, so these may not be exactly the same fire: take them as nearby records.

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)
4 Mar 6.8 °C 43 % 58 km/h 0.5 mm Low 8
5 Mar after 7.1 °C 63 % 74 km/h 2.1 mm Very low 1

Before and after, from space

Drag the line to compare the same ground before the fire and after it.

Before · 25 Feb 2019
After · 11 Mar 2019

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 · Copernicus

On 3 March 2019 the air beside the fire reached 7 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak7 µg/m³
Days over the guideline0 days
PM1015 µg/m³
234567
Good Fair Moderate Poor Very poor Extremely poor

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 · 2Every satellite heat detection, one by one, with time, satellite, power and coordinates.
⬇ Download CSV Times in UTC. Each detection is a 375 m pixel: a large fire yields hundreds per pass.
Date and timeSatelliteFRP (MW)LatLon

Other fires nearby

All fires in Spain ›

Frequently asked questions

How long did the Truchas fire last?
Copernicus dates it between 4 March 2019 and 4 March 2019: 1 day between the first and last image with fire.
How much area did it burn?
The perimeter Copernicus measured from satellite imagery is 144 hectares (1.4 km²). Official national figures may differ.
Which municipalities burned?
The fire only entered Truchas (144 ha, 0.5 %).
Did the fire reach a town?
The fire started in Truchas and came within 12.6 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 6.8 °C, humidity dropped to 43 % and gusts hit 58 km/h. The fire danger index (FWI) reached 8, 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 · 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.

RSS Changes to this page

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
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We will only use your email to reply about this report. Privacy. This is not an emergency service: if there is a fire now, call 112.

How we know this
  • Perimeter: EFFIS (Copernicus), mapped on satellite imagery.
  • Dates from the perimeter: the VIIRS detections inside it did not change them. 2 Suomi-NPP VIIRS detections on those dates.
  • Compared with EGIF (MITECO): 202 official ha against 144 ha of perimeter; similar, but with reservations.
  • Weather: Copernicus ERA5 reanalysis at the fire location, in cells of about 25 km.

How we build fire pages: methodology ›

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.