Mateiros fire, 20 June 2025 Mateiros
The fire started on 20 June 2025 in Mateiros, Brazil, and satellites saw it burning for 7 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,581 hectares from heat detections, spread across a single municipality.
It is the 683th largest in Tocantins since 2016 (of 1242 with a page). Number 394 in Brazil in 2025, of 714.
The power measured by the satellite is low (16.1 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
- 4,581ha
- GWIS perimeter (Copernicus)
- Duration
- 7days
- 20 Jun 2025 – 26 Jun 2025
- Municipalities hit
- 1
- municipalities
- Started on
- 20 Jun
- 2025
- Heat detections
- 142
- in a single hotspot: 16 MW
- Danger at start
- 46
- Very high · FWI index
- Energy released
- 614MW
- 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 48 days without rain (1 mm or more) when it started.
This area had burned before
20% of the perimeter overlaps earlier fires recorded since 2016: 251 ha in 2016, 99 ha in 2019, 21 ha in 2021, 104 ha in 2022, 426 ha in 2023.
What happened to each town
-
4,616 ha reached on 20 Jun0.5 %
Burnt area inside each municipality, from crossing the GWIS 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.
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 Jun | 31.6 °C | 26 % | 46 km/h | 0.0 mm | Very high 46 |
| 21 Jun | 31.8 °C | 31 % | 41 km/h | 0.0 mm | Very high 41 |
| 22 Jun | 32.4 °C | 27 % | 40 km/h | 0.0 mm | Very high 42 |
| 23 Jun | 32.8 °C | 27 % | 36 km/h | 0.0 mm | Very high 39 |
| 24 Jun | 32.9 °C | 23 % | 31 km/h | 0.0 mm | Very high 40 |
| 25 Jun | 33.4 °C | 20 % | 38 km/h | 0.0 mm | Very high 48 |
| 26 Jun | 33.0 °C | 30 % | 54 km/h | 0.0 mm | Extreme 56 |
| 27 Jun after | 32.4 °C | 33 % | 42 km/h | 0.0 mm | Very high 46 |
| 28 Jun after | 32.0 °C | 26 % | 44 km/h | 0.0 mm | Very high 48 |
| 29 Jun after | 32.3 °C | 27 % | 47 km/h | 0.0 mm | Very high 48 |
| 30 Jun after | 32.0 °C | 22 % | 41 km/h | 0.0 mm | Very high 48 |
| 1 Jul after | 32.8 °C | 32 % | 34 km/h | 0.0 mm | Very high 42 |
| 2 Jul after | 32.5 °C | 31 % | 42 km/h | 0.0 mm | Very high 47 |
| 3 Jul after | 31.6 °C | 24 % | 48 km/h | 0.0 mm | Extreme 51 |
| 4 Jul after | 30.5 °C | 28 % | 47 km/h | 0.0 mm | Extreme 51 |
| 5 Jul after | 30.3 °C | 28 % | 46 km/h | 0.0 mm | Very high 50 |
| 6 Jul after | 31.0 °C | 28 % | 45 km/h | 0.0 mm | Very high 49 |
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 22 June 2025 the air beside the fire reached 21 µg/m³ of PM2.5, but no daily average passed the WHO 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 · 142Every 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 Mateiros fire last?
- GWIS (Copernicus) dates it between 20 June 2025 and 26 June 2025: 7 days between the first and last heat detection of the perimeter.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 4,581 hectares (45.8 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Mateiros (4,616 ha, 0.5 %).
- What was the weather like?
- During the fire the temperature reached 33.4 °C, humidity dropped to 20 % and gusts hit 54 km/h. The fire danger index (FWI) reached 56, class Extreme.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Brazil (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: 193
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 comes from the Copernicus Global Wildfire Information System (GWIS), which rebuilds it from MODIS and VIIRS heat detections and publishes it under CC BY 4.0. It is not measured on imagery as in Europe, so it is an estimate. 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 ADM2 (Creative Commons Attribution 3.0 Intergovernmental Organisations (CC BY 3.0 IGO)). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ from each country’s official figure.