How long did the Corumbá fire last?

GWIS (Copernicus) dates it between 26 August 2017 and 5 September 2017: 11 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 4,641 hectares (46.4 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire only entered Corumbá (4,629 ha, 0.1 %).

What was the weather like?

During the fire the temperature reached 39.5 °C, humidity dropped to 21 % and gusts hit 38 km/h. The fire danger index (FWI) reached 43, class Very high.

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 · 2017-08-26 → 2017-09-05

Corumbá fire, 26 August 2017 Corumbá

Out · last detection 6 Sept 2017, 18:16 UTC

The fire started on 26 August 2017 in Corumbá, Brazil, and satellites saw it burning for 11 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,641 hectares from heat detections, spread across a single municipality.

It is the 322th largest in Mato Grosso do Sul since 2016 (of 506 with a page). Number 529 in Brazil in 2017, of 994.

Compare with…

Suggestions: Corumbá · 2016 Corumbá · 2020 Corumbá · 2020 Corumbá · 2019

Burnt area: 4,641ha; GWIS perimeter (Copernicus)
Duration: 11days; 26 Aug 2017 – 5 Sept 2017
Municipalities hit: 1; municipalities
Started on: 26 Aug; 2017
Heat detections: 177; in a single hotspot: 71 MW
Danger at start: 27; High · FWI index
Average daily power: 145MW; detected power per day, on average

HOTSPOTS BY DAY 26 Aug5 Sept

Play back 6 Sept 2017

How it evolved, day by day

26 Aug 28 Aug 30 Aug 1 Sept 3 Sept 5 Sept

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

The weather it burned in

40°high

38km/h · peak gust

21%lowest humidity

It had gone 5 days without rain (1 mm or more) when it started. Rain came after the fire: 1.4 mm on 11 Sept.

This area had burned before

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

How big is it?

It burned the equivalent of 2.9% of the area of London (46 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

Corumbá 96,268 inhabitants where it started

4,629 ha reached on 26 Aug

0.1 %

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.

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)
26 Aug	37.1 °C	28 %	29 km/h	0.0 mm	High 27
27 Aug	37.3 °C	29 %	26 km/h	0.0 mm	High 29
28 Aug	38.5 °C	26 %	27 km/h	0.0 mm	High 31
29 Aug	39.5 °C	23 %	28 km/h	0.0 mm	High 33
30 Aug	37.7 °C	23 %	37 km/h	0.0 mm	Very high 42
31 Aug	35.2 °C	37 %	38 km/h	0.0 mm	High 37
1 Sept	37.8 °C	21 %	28 km/h	0.0 mm	High 36
2 Sept	37.9 °C	22 %	38 km/h	0.0 mm	Very high 40
3 Sept	37.9 °C	21 %	36 km/h	0.0 mm	Very high 41
4 Sept	37.5 °C	26 %	35 km/h	0.0 mm	Very high 40
5 Sept	35.4 °C	29 %	33 km/h	0.0 mm	Very high 42
6 Sept after	34.8 °C	32 %	26 km/h	0.0 mm	High 36
7 Sept after	37.2 °C	24 %	32 km/h	0.0 mm	Very high 38
8 Sept after	38.4 °C	26 %	24 km/h	0.0 mm	High 36
9 Sept after	38.6 °C	27 %	28 km/h	0.0 mm	High 36
10 Sept after	38.7 °C	26 %	36 km/h	0.0 mm	Very high 43
11 Sept after	34.5 °C	43 %	31 km/h	1.4 mm	High 23

Before and after, from space

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

↔

Before · 19 Aug 2017

After · 12 Sept 2017

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.

Detections table · 177Every 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 Corumbá fire last?: GWIS (Copernicus) dates it between 26 August 2017 and 5 September 2017: 11 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 4,641 hectares (46.4 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire only entered Corumbá (4,629 ha, 0.1 %).
What was the weather like?: During the fire the temperature reached 39.5 °C, humidity dropped to 21 % and gusts hit 38 km/h. The fire danger index (FWI) reached 43, class Very high.
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 do you think is wrong?

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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. 177 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.

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