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Avis fire, July 2025 Casa Branca, Alcórrego e Maranhão

Out · last measured on 14 Jul 2025

The fire started on 14 July 2025 in Casa Branca, Portugal, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 121 hectares from satellite imagery, spread across 2 municipalities. According to ICNF, it was detected on 14 July 2025 at 15:07 and declared extinguished on 14 July 2025.

Number 80 in Portugal in 2025, of 85.

Compare with…

Suggestions: Avis · 2020Alter do Chão · 2016Coruche · 2016

We have the Copernicus perimeter for this fire, but not yet its hotspots: NASA publishes the yearly hotspot archive only once the year closes. The page picks it up automatically when it is available.

Burnt area
121ha
Copernicus perimeter
Duration
1day
14 Jul 2025 – 14 Jul 2025
Municipalities hit
2
freguesias
Started on
14 Jul
2025
Danger at start
37
High · FWI index

Where it burned

The weather it burned in

33°high
34km/h · peak gust
29%lowest humidity

It had gone 2 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. Casa Branca 981 inhabitants · 6.2 km from the centre where it started
    111 ha
    1.1 %
  2. Alcórrego e Maranhão 413 inhabitants · 9.3 km from the centre
    10 ha
    0.1 %

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

  • Agricultural areas80 %
  • Broadleaved forest20 %

Land cover inside the perimeter according to Corine Land Cover, as reported by Copernicus.

Official record

According to ICNF, this fire started on 14 July 2025 and burned 116 ha (the satellite measured 121 ha).

ICNF (Instituto da Conservação da Natureza e das Florestas). This is the agency’s operational record: its figures may be revised when the year’s statistics are closed.

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)
14 Jul 32.8 °C 29 % 34 km/h 0.0 mm High 37
15 Jul after 37.8 °C 13 % 24 km/h 0.0 mm Very high 49
16 Jul after 38.0 °C 14 % 39 km/h 0.0 mm Extreme 56
17 Jul after 32.4 °C 21 % 43 km/h 0.0 mm Extreme 54
18 Jul after 28.7 °C 36 % 51 km/h 0.0 mm Very high 45
19 Jul after 28.8 °C 32 % 45 km/h 0.0 mm Very high 41
20 Jul after 27.1 °C 38 % 42 km/h 0.6 mm High 31
21 Jul after 29.8 °C 25 % 40 km/h 0.0 mm Very high 40
22 Jul after 32.0 °C 28 % 45 km/h 0.0 mm Very high 44
23 Jul after 29.3 °C 30 % 43 km/h 0.0 mm Very high 41
24 Jul after 34.9 °C 15 % 31 km/h 0.0 mm Very high 48

Before and after, from space

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

Before · 7 Jul 2025
After · 21 Jul 2025

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 15 July 2025 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
PM1013 µg/m³
Optical depth0.19
121314151617
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)

Other fires nearby

All fires in Portugal ›

Frequently asked questions

How long did the Avis fire last?
Copernicus dates it between 14 July 2025 and 14 July 2025: 1 day between the first and last image with fire. According to ICNF, it was detected on 14 July 2025 at 15:07 and declared extinguished on 14 July 2025.
How much area did it burn?
The perimeter Copernicus measured from satellite imagery is 121 hectares (1.2 km²). Official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Casa Branca (111 ha, 1.1 %); Alcórrego e Maranhão (10 ha, 0.1 %).
Did the fire reach a town?
The fire started in Casa Branca and came within 6.2 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 32.8 °C, humidity dropped to 29 % and gusts hit 34 km/h. The fire danger index (FWI) reached 37, class High.
Where does this data come from?
From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Portugal (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.

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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. No Suomi-NPP VIIRS detections on those dates.
  • Compared with ICNF: 116 official ha against 121 ha of perimeter; they agree within 25%.
  • 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 (CC0 1.0 Universal (CC0 1.0) Public Domain Dedication). 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.