Burned area
satellite only829ha
Perimeter published by EFFIS (Copernicus).
- Source
- EFFIS (Copernicus)
- Date
- perimeter revised on 20 August 2025
+− cross-check
No official record is matched to this page to compare it with.
PT · Portugal · –
Vilar de Perdizes e Meixide fire, August 2025 Vilar de Perdizes e Meixide, Santo André
Out · last detection 19 Aug 2025, 02:57 UTC
The fire started on 18 August 2025 in Vilar de Perdizes e Meixide, Portugal, and satellites saw it burning for 2 days. Copernicus mapped a burnt perimeter of 829 hectares from satellite imagery, spread across 2 freguesias.
It is the 5th largest in Montalegre since 2016 (of 65 with a page). Number 32 in Portugal in 2025, of 85.
Use this data
Compare with…
Use this data
Fire page data · version 2026-10-24matches the official recordwith caveatssatellite onlymodel
When copying, the sentence is
Tick the figures you want: they make up the lede and the CSV.
Duration by satellite
satellite only2days
18 Aug 2025 to 19 Aug 2025: first and last day with fire on the page.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 19 Aug 2025, 02:57 UTC
+− cross-check
Satellites pass a few times a day and cloud or smoke can hide the fire: a lack of detections is not an official extinction. Each country’s emergency service declares a fire contained or out.
Start
satellite only18 Aug 2025
First day with fire seen by the satellites or the perimeter.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 18 Aug 2025
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only46
VIIRS detections at 375 m. Most intense hotspot: 191 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 18 Aug 2025 – 19 Aug 2025
+− cross-check
There is no official record to compare with. Each hotspot is a pixel detected in one satellite pass, not a separate fire.
The worst day
satellite only1,563MW
Total radiative power on 18 August 2025; hotspots that day: 44.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 18 Aug 2025
+− cross-check
Fire radiative power (FRP) measures the energy the fire gives off when the satellite passes. Added up by day, it compares intensity, not area.
Danger at the start
model35.2FWI · high
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 4.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 18 Aug 2025, local noon
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
This is an index computed from weather model data, not a measurement of the fire nor an official warning. Danger warnings are issued by each country’s authority. Emergency number and official warnings
Weather during the fire
model26.1°C · 39% RH
High of 26.1 °C and minimum humidity of 39% on 18 August 2025; gusts of 40 km/h on 18 August 2025.
- Source
- weather model at the fire’s grid cell
- Date
- 18 Aug 2025 – 19 Aug 2025
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
These are model values for a cell of about 25 km, not from a weather station: they may differ from what was measured on the ground.
This page’s change log has been kept since 24 October 2026: every night what it publishes is compared and the difference is logged. Anything earlier is reconstructed from each source’s date and marked as reconstructed.
Show
-
· reconstructed weatherWeather and FWI computed from the ERA5 reanalysis
-
· reconstructed perimeterEFFIS (Copernicus) revises the perimeter
What was saved on 24 October 2026
Every night a snapshot of what the page shows is saved. If anything changes, it appears in the list as a log entry.
- Area
- 829 ha
- Dates
- 18 Aug 2025 – 19 Aug 2025
- Name
- Vilar de Perdizes e Meixide
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/vilar-de-perdizes-e-meixide-2025-08?v=2026-10-24A version keeps the area, dates, name and official record; the area as it was logged (changes under 2% are not logged). The map, hotspots and weather always show today’s data.
Citation
A lede of about 60 words figures only, no adjectives
CSV for this fire vilar-de-perdizes-e-meixide-2025-08.csv · daily, no individual hotspots
| fecha | focos_viirs | frp_mw | tmax_c | tmin_c | hr_min_pct | viento_max_kmh | racha_max_kmh | precip_mm | fwi | clase_fwi | dentro_del_incendio |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-08-18 | 44 | 1,563 | 26.1 | 15.7 | 39 | 17.2 | 39.6 | 0 | 35.2 | alto | 1 |
| 2025-08-19 | 2 | 5 | 24.3 | 12 | 42 | 18.7 | 39.6 | 0 | 30.7 | alto | 1 |
| 2025-08-20 | 0 | 0 | 23.5 | 11.2 | 41 | 17.4 | 41.4 | 0 | 31.8 | alto | 0 |
| 2025-08-21 | 0 | 0 | 25.9 | 10.3 | 34 | 11.7 | 27.7 | 0 | 25.4 | alto | 0 |
| 2025-08-22 | 0 | 0 | 27.8 | 13.8 | 32 | 7.1 | 22 | 0 | 24.5 | alto | 0 |
| 2025-08-23 | 0 | 0 | 29.1 | 13.7 | 30 | 8.6 | 25.9 | 0 | 29 | alto | 0 |
| 2025-08-24 | 0 | 0 | 29.7 | 13.6 | 30 | 8.7 | 24.1 | 0 | 28.8 | alto | 0 |
| 2025-08-25 | 0 | 0 | 29.6 | 14 | 34 | 10.1 | 24.8 | 0 | 33.7 | alto | 0 |
| 2025-08-26 | 0 | 0 | 27.5 | 13.1 | 33 | 14.1 | 32.8 | 0 | 30 | alto | 0 |
| 2025-08-27 | 0 | 0 | 21.3 | 11.6 | 49 | 18 | 38.2 | 0 | 31.9 | alto | 0 |
| 2025-08-28 | 0 | 0 | 21.1 | 11.5 | 41 | 17.4 | 38.9 | 0 | 32.4 | alto | 0 |
| 2025-08-29 | 0 | 0 | 22.1 | 13.6 | 55 | 18.4 | 45.4 | 0 | 29.8 | alto | 0 |
It is generated in your browser from this page’s data: one file per fire, aggregated by day and without individual hotspots.
Live widget for your story
It updates itself while the fire is still active and links to this page. Free, with the attribution shown at the bottom.
Sources for this page: EFFIS (Copernicus), NASA FIRMS (VIIRS), ERA5 (ECMWF/Copernicus C3S) · Open-Meteo.com (CC BY 4.0). Open-Meteo.com · How we build fire pages: methodology
- Burnt area
- 829ha
- Copernicus perimeter
- Duration
- 2days
- 18 Aug 2025 – 19 Aug 2025
- Freguesias hit
- 2
- freguesias
- Started on
- 18 Aug
- 2025
- Heat detections
- 46
- in a single hotspot: 191 MW
- Danger at start
- 35
- High · FWI index
- Average daily power
- 784MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
18 Aug19 Aug
19 Aug 2025
How it evolved, day by day
18 Aug
19 Aug
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
26°high
40km/h · peak gust
39%lowest humidity
It had gone 4 days without rain (1 mm or more) when it started.
This area had burned before
39% of the perimeter overlaps earlier fires recorded since 2016: 121 ha in 2016, 25 ha in 2019, 10 ha in 2021, 258 ha in 2022, 15 ha in 2023. Part of it burned more than once, so the yearly figures add up to more than the 320 ha that had burned before.
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
Lisbon boundary: geoBoundaries · geoBoundaries, DG Territory (CC0 1.0).
Paris boundary: geoBoundaries · Institut national de l'information géographique et forestière (IGN-F) (Etalab Open License 2.0).
Madrid boundary: geoBoundaries · Open Data ESRI, IGN Central Registry of Cartography Area (CC BY 4.0).
This compares size, not location: both shapes are at the same scale, north up, centred on each other.
What happened to each freguesia
-
825 ha reached on 18 Aug22 %
-
Santo André 3.9 km from the centre0 ha0.0 %
Burnt area inside each freguesia, 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 land50 %
- Agricultural areas41 %
- Scrub and transitional woodland9.8 %
Land cover inside the perimeter according to Corine Land Cover, as reported by Copernicus.
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) |
|---|---|---|---|---|---|
| 18 Aug | 26.1 °C | 39 % | 40 km/h | 0.0 mm | High 35 |
| 19 Aug | 24.3 °C | 42 % | 40 km/h | 0.0 mm | High 31 |
| 20 Aug after | 23.5 °C | 41 % | 41 km/h | 0.0 mm | High 32 |
| 21 Aug after | 25.9 °C | 34 % | 28 km/h | 0.0 mm | High 25 |
| 22 Aug after | 27.8 °C | 32 % | 22 km/h | 0.0 mm | High 24 |
| 23 Aug after | 29.1 °C | 30 % | 26 km/h | 0.0 mm | High 29 |
| 24 Aug after | 29.7 °C | 30 % | 24 km/h | 0.0 mm | High 29 |
| 25 Aug after | 29.6 °C | 34 % | 25 km/h | 0.0 mm | High 34 |
| 26 Aug after | 27.5 °C | 33 % | 33 km/h | 0.0 mm | High 30 |
| 27 Aug after | 21.3 °C | 49 % | 38 km/h | 0.0 mm | High 32 |
| 28 Aug after | 21.1 °C | 41 % | 39 km/h | 0.0 mm | High 32 |
| 29 Aug after | 22.1 °C | 55 % | 45 km/h | 0.0 mm | High 30 |
Its twins: fires that started in the same weather
It started with an FWI of 35.2, a minimum humidity of 39% and 4 days without rain. Fires in the area that started in weather like this since 2016: 37.
FWI at the start
35.2
Minimum humidity
39 %
Days without rain
4
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Vilar de Perdizes e Meixide fire, August 2025
829 ha
2 days
FWI 35.2
Min. humidity 39 %
Rubiães fire, August 2016
192 ha
4 days
FWI 35.6
Min. humidity 40 %
84 km away, in 2016
First rain (1 mm or more) after it ended: 2.0 mm on 17 Aug.
Mesao Frio fire, August 2022
470 ha
4 days
FWI 36.1
Min. humidity 38 %
78 km away, in 2022
First rain (1 mm or more) after it ended: none in the following ten days.
Cabeceiras de Basto fire, August 2022
219 ha
1 day
FWI 36.1
Min. humidity 37 %
53 km away, in 2022
First rain (1 mm or more) after it ended: 2.0 mm on 24 Aug.
Cabeceiras de Basto fire, August 2022
120 ha
1 day
FWI 29.9
Min. humidity 39 %
51 km away, in 2022
First rain (1 mm or more) after it ended: 12.3 mm on 5 Sept.
Lama de Arcos fire, July 2022
395 ha
3 days
FWI 32.9
Min. humidity 40 %
21 km away, in 2022
First rain (1 mm or more) after it ended: none in the following ten days.
What happened to them
- 2 days
- median duration
- 259 ha
- median area
- 16 %
- went past 1,000 ha
- 3.3 mm
- rain at the end (median; 23 of 37 had it)
It was 3.2 times larger than the median of its twins and lasted 2 days, against 2 days.
Only 6 of its 37 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 14 of 37, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 3.3 mm.
This is a bank of analogues: it shows what usually happens, not what will happen. With fewer than 15 twins we give no figures. How we calculate it
How it ended
—first rain
—no rain in ten days
40km/h · max. gust
It was considered over on 19 Aug, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 23 of 37, with a median of 3.3 mm.
Weather on this page: Open-Meteo.com (CC BY 4.0) · Copernicus Climate Change Service (ERA5)
How a twin is chosen
- Same area: fires that have already ended, less than 250 km from this one, since 2016.
- Same start: we compare the FWI on the first day, the minimum humidity that day and the run of days without rain before it. The slider sets how much they may differ.
- Only pages with final weather data (ERA5 reanalysis) calculated in the same way as this fire’s; agricultural and grass burns and pages with data under review are left out.
- Fires burning at the same time as this one (a week before or after) are left out: they share the same spell of weather and do not count as a precedent.
- They are sorted by similarity, and the outlines of the first five are drawn.
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
↔
Before · 11 Aug 2025
After · 26 Aug 2025
Sentinel-2 did not pass over on that day. Try another date, or use false colour, which is daily.
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 18 August 2025 the air beside the fire reached 57 µg/m³ of PM2.5. That day averaged 30: 2.0 times the WHO daily guideline (15).
PM2.5 peak57 µg/m³
Days over the guideline4 days
PM1077 µg/m³
Optical depth1.96
WHO 15
16 Aug18 Aug20 Aug22 Aug
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 · 46Every 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 time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 24,471 haMonterreiAugust 2025 · 8 days · 12 km away
- 3,493 haVilarelho Da RaiaAugust 2025 · 2 days · 12 km away
- 3,127 haChaves BusteloJuly 2022 · 5 days · 13 km away
- 3,240 haMuíñosOctober 2017 · 2 days · 31 km away
- 3,634 haLazaAugust 2022 · 7 days · 35 km away
- 13,065 haValpaços ErvõesJuly 2026 · 6 days · 40 km away
Frequently asked questions
- How long did the Vilar de Perdizes e Meixide fire last?
- Copernicus dates it between 18 August 2025 and 19 August 2025: 2 days between the first and last image with fire.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 829 hectares (8.3 km²). Official national figures may differ.
- Which freguesias burned?
- The fire entered 2 freguesias: Vilar de Perdizes e Meixide (825 ha, 22 %); Santo André (0 ha, 0.0 %).
- Did the fire reach a town?
- The fire started in Vilar de Perdizes e Meixide and came within 1.2 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 26.1 °C, humidity dropped to 39 % and gusts hit 40 km/h. The fire danger index (FWI) reached 35, 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.
- How did the fires that started in similar weather in this area end?
- Fires less than 250 km away that started since 2016 with a similar FWI, humidity and dry spell: 37. Their median duration was 2 days and their median area 259 ha; 16 % went past 1,000 ha. Only 6 of its 37 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 14 of 37, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 3.3 mm.
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
- ICNF · Instituto da Conservação da Natureza e das Florestas ↗
- ANEPC · Proteção Civil ↗
- Fogos.pt (ocorrências em tempo real) ↗
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 With cross-checks and a citable version
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. 46 Suomi-NPP VIIRS detections on those dates.
- We have not matched this page with any official record.
- 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. Freguesia boundaries come from geoBoundaries ADM3 (CC0 1.0 Universal (CC0 1.0) Public Domain Dedication). The area per freguesia is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ slightly from each country’s official figure.