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Bannach fire, 17 September 2017 Bannach

Out · last detection 26 Sept 2017, 17:03 UTC

The fire started on 17 September 2017 in Bannach, Brazil, and satellites saw it burning for 10 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 6,718 hectares from heat detections, spread across a single municipality.

It is the 359th largest in Pará since 2016 (of 1096 with a page). Number 299 in Brazil in 2017, of 994.

Compare with…

Suggestions: Bannach · 2020Bannach · 2022Bannach · 2024Cumaru do Norte · 2024

Burnt area
6,718ha
GWIS perimeter (Copernicus)
Duration
10days
17 Sept 2017 – 26 Sept 2017
Municipalities hit
1
municipalities
Started on
17 Sept
2017
Heat detections
232
in a single hotspot: 72 MW
Danger at start
47
Very high · FWI index
Average daily power
246MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 17 Sept26 Sept
26 Sept 2017

How it evolved, day by day

17 Sept 2017 · 268 MW · 14 18 Sept 2017 · 799 MW · 77 19 Sept 2017 · 679 MW · 75 20 Sept 2017 · 106 MW · 44 22 Sept 2017 · 23 MW · 15 23 Sept 2017 · 10 MW · 1 24 Sept 2017 · 71 MW · 5 26 Sept 2017 · 11 MW · 1
17 Sept 18 Sept 19 Sept 22 Sept 24 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

37°high
47km/h · peak gust
24%lowest humidity

It had gone more than two months 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.

How big is it?

10 km
It burned the equivalent of 4.2% of the area of London (67 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

  1. Bannach 4,031 inhabitants where it started
    6,761 ha reached on 17 Sept
    2.3 %

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 2015
Built-up area0.80 ha
Residents≈ 40

Inside the perimeter there were about 0.80 hectares of built-up land and about 40 residents (GHSL 2015, 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.

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)
17 Sept 35.7 °C 24 % 43 km/h 0.0 mm Very high 47
18 Sept 36.8 °C 25 % 35 km/h 0.0 mm Very high 41
19 Sept 37.2 °C 25 % 29 km/h 0.0 mm Very high 40
20 Sept 34.7 °C 34 % 41 km/h 0.2 mm Very high 42
21 Sept 33.9 °C 41 % 32 km/h 0.0 mm High 32
22 Sept 36.3 °C 28 % 47 km/h 0.0 mm Very high 44
23 Sept 34.1 °C 39 % 37 km/h 0.0 mm High 36
24 Sept 34.9 °C 36 % 31 km/h 0.3 mm High 35
25 Sept 34.1 °C 36 % 31 km/h 0.0 mm High 36
26 Sept 35.0 °C 37 % 33 km/h 0.0 mm High 34
27 Sept after 35.2 °C 36 % 36 km/h 0.0 mm High 34
28 Sept after 35.8 °C 36 % 34 km/h 0.0 mm High 34
29 Sept after 35.1 °C 39 % 37 km/h 0.1 mm High 35
30 Sept after 33.4 °C 47 % 29 km/h 0.2 mm High 29
1 Oct after 32.9 °C 45 % 33 km/h 0.3 mm High 30
2 Oct after 35.0 °C 36 % 35 km/h 0.0 mm High 32
3 Oct after 34.8 °C 35 % 32 km/h 0.8 mm High 31
4 Oct after 36.7 °C 33 % 42 km/h 0.2 mm High 35
5 Oct after 35.1 °C 40 % 36 km/h 0.4 mm High 36
6 Oct after 35.4 °C 36 % 31 km/h 0.1 mm High 33

Before and after, from space

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

Before · 10 Sept 2017
After · 3 Oct 2017

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 · 232Every 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 timeSatelliteFRP (MW)LatLon

Other fires nearby

All fires in Brazil ›

Frequently asked questions

How long did the Bannach fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 17 September 2017 to 26 September 2017 (10 days). The perimeter dates it from 17 September 2017 to 22 September 2017.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 6,718 hectares (67.2 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Bannach (6,761 ha, 2.3 %).
What was the weather like?
During the fire the temperature reached 37.2 °C, humidity dropped to 24 % and gusts hit 47 km/h. The fire danger index (FWI) reached 47, 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 ›

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.

Report an error
What do you think is wrong?

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 adjusted with the VIIRS detections inside the perimeter, which said 17 September 2017 to 22 September 2017. 232 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 2015, 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.