How long did the Canto do Buriti fire last?

GWIS (Copernicus) dates it between 30 July 2025 and 8 August 2025: 10 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 7,632 hectares (76.3 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire entered 2 municipalities: Canto do Buriti (5,435 ha, 1.2 %); Pavussu (2,243 ha, 2.0 %).

What was the weather like?

During the fire the temperature reached 36.3 °C, humidity dropped to 20 % and gusts hit 53 km/h. The fire danger index (FWI) reached 54, 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.

BR · Brazil · 2025-07-30 → 2025-08-08

Canto do Buriti fire, July 2025 Canto do Buriti, Pavussu

Out · last detection 8 Aug 2025, 15:55 UTC

The fire started on 30 July 2025 in Canto do Buriti, Brazil, and satellites saw it burning for 10 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 7,632 hectares from heat detections, spread across 2 municipalities.

It is the 170th largest in Piaui since 2016 (of 805 with a page). Number 182 in Brazil in 2025, of 714.

Compare with…

Suggestions: Canto do Buriti · 2022 Canto do Buriti · 2020 Canto do Buriti · 2023 Canto do Buriti · 2025

Burnt area: 7,632ha; GWIS perimeter (Copernicus)
Duration: 10days; 30 Jul 2025 – 8 Aug 2025
Municipalities hit: 2; municipalities
Started on: 30 Jul; 2025
Heat detections: 444; in a single hotspot: 264 MW
Danger at start: 48; Very high · FWI index
Average daily power: 1.8GW; detected power per day, on average

HOTSPOTS BY DAY 30 Jul8 Aug

Play back 8 Aug 2025

How it evolved, day by day

31 Jul 2 Aug 3 Aug 4 Aug 6 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

36°high

53km/h · peak gust

20%lowest humidity

It had gone more than two months without rain (1 mm or more) when it started.

This area had burned before

24% of the perimeter overlaps earlier fires recorded since 2016: 1,817 ha in 2021, 1 ha in 2024.

How big is it?

It burned the equivalent of 4.8% of the area of London (76 km² against 1,583 km²).

London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).

This compares size, not location: both shapes are at the same scale, north up, centred on each other.

What happened to each town

Canto do Buriti 19,365 inhabitants where it started

5,435 ha reached on 31 Jul

1.2 %
Pavussu 3,628 inhabitants

2,243 ha reached on 3 Aug

2.0 %

Burnt area inside each municipality, from crossing the GWIS 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.

People and buildings inside the perimeter

GHSL 2025

Built-up area0.30 ha

Residents< 20

Inside the perimeter there were about 0.30 hectares of built-up land and almost nobody lived there (GHSL 2025, satellite-based estimate).

This is an estimate on 100 m cells, made from satellite imagery and census data: it does not mean that homes burned or that anyone was harmed. The perimeter also contains land that never burned. The GHSL 2025 epoch is a projection made from 2020 and earlier data.

Source: Global Human Settlement Layer (GHS-BUILT-S and GHS-POP R2023A), European Commission Joint Research Centre (JRC), © European Union, CC BY 4.0. Sum inside the perimeter computed by WorldFires. human-settlement.emergency.copernicus.eu

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)
30 Jul	36.3 °C	20 %	37 km/h	0.0 mm	Very high 48
31 Jul	31.0 °C	28 %	46 km/h	0.1 mm	Very high 49
1 Aug	33.2 °C	27 %	51 km/h	0.0 mm	Extreme 53
2 Aug	32.4 °C	29 %	52 km/h	0.0 mm	Extreme 51
3 Aug	33.0 °C	23 %	53 km/h	0.0 mm	Extreme 54
4 Aug	31.7 °C	35 %	53 km/h	0.0 mm	Very high 49
5 Aug	35.0 °C	22 %	46 km/h	0.0 mm	Very high 50
6 Aug	33.7 °C	25 %	48 km/h	0.0 mm	Extreme 51
7 Aug	34.3 °C	23 %	48 km/h	0.0 mm	Extreme 50
8 Aug	34.7 °C	24 %	44 km/h	0.0 mm	Very high 49
9 Aug after	36.1 °C	19 %	38 km/h	0.0 mm	Very high 49
10 Aug after	35.5 °C	24 %	33 km/h	0.0 mm	Very high 45
11 Aug after	33.8 °C	36 %	27 km/h	0.1 mm	High 34
12 Aug after	34.7 °C	26 %	39 km/h	0.0 mm	Very high 41
13 Aug after	33.9 °C	25 %	44 km/h	0.0 mm	Very high 45
14 Aug after	35.7 °C	19 %	46 km/h	0.0 mm	Extreme 53
15 Aug after	35.1 °C	22 %	49 km/h	0.0 mm	Extreme 55
16 Aug after	34.6 °C	23 %	51 km/h	0.0 mm	Extreme 56
17 Aug after	34.2 °C	22 %	52 km/h	0.0 mm	Extreme 56
18 Aug after	34.5 °C	22 %	49 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 · 23 Jul 2025

After · 15 Aug 2025

Before After

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 5 August 2025 the air beside the fire reached 59 µg/m³ of PM2.5. That day averaged 16: 1.1 times the WHO daily guideline (15).

PM2.5 peak59 µg/m³

Days over the guideline1 day

PM1059 µg/m³

Optical depth0.91

WHO 15

2324252627282930311234567891011

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 · 444Every 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

All fires in Brazil ›

Frequently asked questions

How long did the Canto do Buriti fire last?: GWIS (Copernicus) dates it between 30 July 2025 and 8 August 2025: 10 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 7,632 hectares (76.3 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire entered 2 municipalities: Canto do Buriti (5,435 ha, 1.2 %); Pavussu (2,243 ha, 2.0 %).
What was the weather like?: During the fire the temperature reached 36.3 °C, humidity dropped to 20 % and gusts hit 53 km/h. The fire danger index (FWI) reached 54, 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 · Emergency number and official warnings ›

INPE · Programa Queimadas ↗
IBAMA · Prevfogo ↗

Satellite cross-check

NASA FIRMS ↗
GWIS · Copernicus ↗

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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What really happened?

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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 193.

How we know this

Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery.
Dates from the perimeter: the VIIRS detections inside it did not change them. 444 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.
Built-up area and population come from the JRC Global Human Settlement Layer (epoch 2025, 100 m cells), summed inside the perimeter: an estimate of what was there, not a damage count.

How we build fire pages: methodology ›

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.

Where it burned