Skip to content
worldfires
en
BR · Brazil · →

Manicoré fire, 10 August 2021 Manicoré, Novo Aripuanã

Out · last detection 13 Aug 2021, 17:35 UTC

The fire started on 10 August 2021 in Manicoré, Brazil, and satellites saw it burning for 4 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,075 hectares from heat detections, spread across 2 municipalities.

It is the 247th largest in Amazonas since 2016 (of 450 with a page). Number 533 in Brazil in 2021, of 814.

Compare with…

Suggestions: Novo Aripuanã · 2019Novo Aripuanã · 2017Novo Aripuanã · 2018Novo Aripuanã · 2016

Burnt area
4,075ha
GWIS perimeter (Copernicus)
Duration
4days
10 Aug 2021 – 13 Aug 2021
Municipalities hit
2
municipalities
Started on
10 Aug
2021
Heat detections
331
in a single hotspot: 440 MW
Danger at start
38
Very high · FWI index
Average daily power
3.9GW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 10 Aug13 Aug
13 Aug 2021

How it evolved, day by day

10 Aug 2021 · 13,942 MW · 111 11 Aug 2021 · 1,356 MW · 150 12 Aug 2021 · 253 MW · 64 13 Aug 2021 · 32 MW · 6
10 Aug 11 Aug 12 Aug 13 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

38°high
31km/h · peak gust
20%lowest humidity

It had gone 42 days without rain (1 mm or more) when it started.

This area had burned before

96% of the perimeter overlaps earlier fires recorded since 2016: 385 ha in 2016, 3,322 ha in 2017, 809 ha in 2018, 3,475 ha in 2019, 2,823 ha in 2020. Part of it burned more than once, so the yearly figures add up to more than the 3,905 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 2.6% of the area of London (41 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. Manicoré where it started
    3,771 ha reached on 10 Aug
    0.1 %
  2. Novo Aripuanã 23,818 inhabitants
    339 ha reached on 10 Aug
    0.0 %

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 2020
Built-up area< 0.1 ha
Residents< 20

Inside the perimeter there was no noticeable built-up land and almost nobody lived there (GHSL 2020, 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)
10 Aug 36.8 °C 22 % 28 km/h 0.0 mm Very high 38
11 Aug 37.5 °C 20 % 26 km/h 0.0 mm Very high 39
12 Aug 37.8 °C 20 % 31 km/h 0.0 mm Very high 41
13 Aug 36.4 °C 24 % 27 km/h 0.0 mm Very high 43
14 Aug after 34.4 °C 32 % 27 km/h 0.0 mm High 38
15 Aug after 35.7 °C 35 % 23 km/h 0.1 mm High 35
16 Aug after 36.2 °C 34 % 26 km/h 0.0 mm High 33
17 Aug after 35.6 °C 32 % 28 km/h 0.0 mm High 34
18 Aug after 36.6 °C 23 % 29 km/h 0.0 mm High 38
19 Aug after 36.7 °C 20 % 21 km/h 0.0 mm Very high 39
20 Aug after 35.1 °C 31 % 28 km/h 0.0 mm High 38
21 Aug after 36.3 °C 26 % 28 km/h 0.0 mm High 36
22 Aug after 37.8 °C 24 % 25 km/h 0.0 mm High 37
23 Aug after 37.1 °C 21 % 27 km/h 0.0 mm Very high 39

Before and after, from space

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

Before · 3 Aug 2021
After · 20 Aug 2021

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 · 331Every 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 Manicoré fire last?
GWIS (Copernicus) dates it between 10 August 2021 and 13 August 2021: 4 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 4,075 hectares (40.8 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Manicoré (3,771 ha, 0.1 %); Novo Aripuanã (339 ha, 0.0 %).
What was the weather like?
During the fire the temperature reached 37.8 °C, humidity dropped to 20 % and gusts hit 31 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 ›

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. 331 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 2020, 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.