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Bannach fire, 14 September 2017 Bannach

Out · last detection 25 Sept 2017, 04:45 UTC

The fire started on 14 September 2017 in Bannach, Brazil, and satellites saw it burning for 11 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 13,532 hectares from heat detections, spread across a single municipality.

It is the 151th largest in Pará since 2016 (of 1096 with a page). Number 113 in Brazil in 2017, of 994.

Compare with…

Suggestions: Bannach · 2020Bannach · 2022Bannach · 2024Cumaru do Norte · 2017

Burnt area
13,532ha
GWIS perimeter (Copernicus)
Duration
11days
14 Sept 2017 – 24 Sept 2017
Municipalities hit
1
municipalities
Started on
14 Sept
2017
Heat detections
545
in a single hotspot: 178 MW
Danger at start
42
Very high · FWI index
Average daily power
494MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 14 Sept24 Sept
25 Sept 2017

How it evolved, day by day

14 Sept 2017 · 30 MW · 20 15 Sept 2017 · 1,903 MW · 49 16 Sept 2017 · 890 MW · 54 17 Sept 2017 · 2,079 MW · 255 18 Sept 2017 · 481 MW · 53 19 Sept 2017 · 131 MW · 28 20 Sept 2017 · 34 MW · 22 21 Sept 2017 · 5 MW · 1 22 Sept 2017 · 79 MW · 10 23 Sept 2017 · 256 MW · 37 24 Sept 2017 · 34 MW · 15 25 Sept 2017 · 1 MW · 1
14 Sept 16 Sept 17 Sept 18 Sept 20 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

36°high
48km/h · peak gust
23%lowest humidity

It had gone more than two months without rain (1 mm or more) when it started. Rain came after the fire: 1.5 mm on 3 Oct.

This area had burned before

4% of the perimeter overlaps earlier fires recorded since 2016: 560 ha in 2016.

How big is it?

10 km
It burned the equivalent of 8.5% of the area of London (135 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
    13,620 ha reached on 14 Sept
    4.6 %

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)
14 Sept 34.7 °C 29 % 40 km/h 0.0 mm Very high 42
15 Sept 36.0 °C 25 % 47 km/h 0.0 mm Very high 46
16 Sept 34.9 °C 23 % 43 km/h 0.0 mm Very high 45
17 Sept 34.5 °C 24 % 42 km/h 0.0 mm Very high 45
18 Sept 35.3 °C 26 % 38 km/h 0.0 mm Very high 41
19 Sept 35.4 °C 26 % 33 km/h 0.0 mm Very high 40
20 Sept 33.7 °C 37 % 44 km/h 0.3 mm Very high 41
21 Sept 32.9 °C 42 % 36 km/h 0.4 mm High 32
22 Sept 34.8 °C 28 % 48 km/h 0.0 mm Very high 43
23 Sept 32.9 °C 39 % 40 km/h 0.0 mm High 36
24 Sept 33.4 °C 37 % 32 km/h 0.1 mm High 34
25 Sept after 32.9 °C 37 % 34 km/h 0.0 mm High 36
26 Sept after 34.0 °C 36 % 31 km/h 0.0 mm High 34
27 Sept after 33.9 °C 37 % 38 km/h 0.0 mm High 35
28 Sept after 34.4 °C 37 % 36 km/h 0.0 mm High 35
29 Sept after 33.9 °C 39 % 39 km/h 0.1 mm High 35
30 Sept after 32.0 °C 47 % 30 km/h 0.2 mm High 29
1 Oct after 32.0 °C 45 % 35 km/h 0.2 mm High 30
2 Oct after 33.6 °C 37 % 36 km/h 0.0 mm High 32
3 Oct after 33.5 °C 36 % 30 km/h 1.5 mm High 23

Before and after, from space

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

Before · 7 Sept 2017
After · 1 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 · 545Every 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?
GWIS (Copernicus) dates it between 14 September 2017 and 24 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 13,532 hectares (135.3 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Bannach (13,620 ha, 4.6 %).
What was the weather like?
During the fire the temperature reached 36.0 °C, humidity dropped to 23 % and gusts hit 48 km/h. The fire danger index (FWI) reached 46, 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 from the perimeter: the VIIRS detections inside it did not change them. 545 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.