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Brieva fire, July 2026 Turégano, Pelayos del Arroyo, Brieva

Out · last detection 21 Jul 2026, 03:08 UTC

The fire started on 20 July 2026 in Turégano, Spain, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 3,495 hectares from satellite imagery, spread across 9 municipalities.

Number 12 in Spain in 2026, of 195.

The power measured by the satellite is low (2.9 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
3,495ha
Copernicus perimeter
Duration
1day
20 Jul 2026 – 20 Jul 2026
Municipalities hit
9
municipalities
Started on
20 Jul
2026
Heat detections
23
in a single hotspot: 3 MW
Danger at start
51
Extreme · FWI index
Energy released
27MW
sum of detected power

Where it burned

HOTSPOTS BY DAY 20 Jul20 Jul

How it evolved, day by day

21

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

The weather it burned in

34°high
28km/h · peak gust
7%lowest humidity

It had gone 11 days without rain (1 mm or more) when it started.

This area had burned before

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

What happened to each town

  1. Turégano 1,007 inhabitants · 6.3 km from the town where it started
    1,560 ha reached on 21 Jul
    22 %
  2. Pelayos del Arroyo
    594 ha reached on 21 Jul
    47 %
  3. Brieva 93 inhabitants · 0.6 km from the town
    454 ha
    34 %
  4. Santo Domingo de Pirón 51 inhabitants · 0.1 km from the town
    408 ha
    15 %
  5. Adrada de Pirón 39 inhabitants · 0.5 km from the town
    179 ha reached on 21 Jul
    17 %
  6. Torreiglesias 257 inhabitants · 3.3 km from the town
    150 ha
    2.7 %
  7. Sotosalbos 45 inhabitants · 1.2 km from the town
    98 ha reached on 21 Jul
    4.0 %
  8. Basardilla 136 inhabitants · 0.8 km from the town
    30 ha
    1.6 %
  9. Caballar 78 inhabitants · 1.7 km from the town
    24 ha
    1.4 %

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

  • Agricultural areas85 %
  • Broadleaved forest8.0 %
  • Other natural land4.1 %
  • Scrub and transitional woodland2.6 %

Natura 2000 protected area affected: 9 %

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 30 September 2026

We checked this page against 3 sources published once the fire was out. This is what they add:

Also known as
Incendio de Brieva/Pelayos del Arroyo · Incendio de Segovia
Declared under control (not yet extinguished): 26 July 2026

Sources

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 Jul 33.0 °C 7 % 28 km/h 0.0 mm Extreme 51
21 Jul after 34.5 °C 7 % 26 km/h 0.0 mm Extreme 52
22 Jul after 35.8 °C 10 % 26 km/h 0.0 mm Extreme 54
23 Jul after 34.0 °C 7 % 24 km/h 0.0 mm Extreme 54
24 Jul after 28.9 °C 11 % 33 km/h 0.0 mm Extreme 64
25 Jul after 22.4 °C 31 % 30 km/h 0.0 mm Very high 43
26 Jul after 25.0 °C 22 % 15 km/h 0.0 mm High 30
27 Jul after 31.3 °C 17 % 20 km/h 0.0 mm Very high 39
28 Jul after 35.8 °C 13 % 28 km/h 0.0 mm Very high 41
29 Jul after 37.0 °C 14 % 38 km/h 0.0 mm Very high 49
30 Jul after 36.8 °C 11 % 38 km/h 0.0 mm Extreme 53
31 Jul after 32.8 °C 9 % 38 km/h 0.0 mm Extreme 54

Before and after, from space

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

Before · 13 Jul 2026
After · 27 Jul 2026

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 22 July 2026 the air beside the fire reached 10 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak10 µg/m³
Days over the guideline0 days
PM1042 µg/m³
Optical depth0.39
18192021222324
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 · 23Every 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 Brieva fire last?
Copernicus dates it between 20 July 2026 and 20 July 2026: 1 day between the first and last image with fire.
How much area did it burn?
The perimeter Copernicus measured from satellite imagery is 3,495 hectares (35.0 km²). Official national figures may differ.
Which municipalities burned?
The fire entered 9 municipalities: Turégano (1,560 ha, 22 %); Pelayos del Arroyo (594 ha, 47 %); Brieva (454 ha, 34 %); Santo Domingo de Pirón (408 ha, 15 %); Adrada de Pirón (179 ha, 17 %); Torreiglesias (150 ha, 2.7 %); Sotosalbos (98 ha, 4.0 %); Basardilla (30 ha, 1.6 %); Caballar (24 ha, 1.4 %).
Did the fire reach a town?
The closest fire to a town centre came within 0.1 km of Santo Domingo de Pirón. 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 34.5 °C, humidity dropped to 7 % and gusts hit 28 km/h. The fire danger index (FWI) reached 52, class Extreme.
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
What do you think is wrong?

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.

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.