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Apuí fire, 3 August 2024 Apuí

Out · last detection 2 Sept 2024, 04:33 UTC

The fire started on 3 August 2024 in Apuí, Brazil, and satellites saw it burning for 30 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 9,050 hectares from heat detections, spread across a single municipality.

It is the 52th largest in Amazonas since 2016 (of 450 with a page). Number 365 in Brazil in 2024, of 1301.

Burnt area
9,050ha
GWIS perimeter (Copernicus)
Duration
30days
3 Aug 2024 – 1 Sept 2024
Municipalities hit
1
municipalities
Started on
3 Aug
2024
Heat detections
1,265
in a single hotspot: 1,093 MW
Danger at start
39
Very high · FWI index
Energy released
22.1GW
sum of detected power

Where it burned

2 Sept 2024
HOTSPOTS BY DAY 3 Aug1 Sept

How it evolved, day by day

34567891011121314151617181920212223242526272829303112

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
37km/h · peak gust
22%lowest humidity

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

This area had burned before

93% of the perimeter overlaps earlier fires recorded since 2016: 10 ha in 2017, 2,214 ha in 2019, 1,395 ha in 2020, 6,731 ha in 2021, 8,400 ha in 2022, 4,874 ha in 2023. Part of it burned more than once, so the yearly figures add up to more than the 8,452 ha that had burned before.

What happened to each town

  1. Apuí 20,647 inhabitants where it started
    9,097 ha reached on 30 Jul
    0.2 %

Burnt area inside each municipality, from crossing the GWIS perimeter with administrative boundaries. The distance is from the town centre 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)
30 Jul 37.4 °C 26 % 34 km/h 0.0 mm Very high 39
31 Jul 36.6 °C 29 % 27 km/h 0.0 mm High 37
1 Aug 36.2 °C 33 % 24 km/h 0.0 mm High 35
2 Aug 35.9 °C 31 % 22 km/h 0.0 mm High 34
3 Aug 35.5 °C 37 % 30 km/h 0.0 mm High 35
4 Aug 36.1 °C 30 % 34 km/h 0.0 mm High 38
5 Aug 36.4 °C 27 % 34 km/h 0.0 mm High 38
6 Aug 35.0 °C 34 % 26 km/h 0.0 mm High 36
7 Aug 37.6 °C 25 % 26 km/h 0.0 mm High 36
8 Aug 38.1 °C 22 % 25 km/h 0.0 mm Very high 38
9 Aug 37.6 °C 26 % 28 km/h 0.0 mm Very high 40
10 Aug 34.5 °C 33 % 37 km/h 0.0 mm Very high 40
11 Aug 34.9 °C 28 % 23 km/h 0.0 mm High 36
12 Aug 35.8 °C 28 % 32 km/h 0.0 mm High 37
13 Aug 34.6 °C 33 % 22 km/h 0.0 mm High 37
14 Aug 35.3 °C 41 % 25 km/h 0.7 mm High 26
15 Aug 34.8 °C 46 % 31 km/h 6.7 mm Low 7
16 Aug 34.2 °C 50 % 29 km/h 0.9 mm Moderate 12
17 Aug 35.2 °C 39 % 24 km/h 0.0 mm High 22
18 Aug 35.1 °C 42 % 25 km/h 0.1 mm High 23
19 Aug 35.5 °C 38 % 27 km/h 0.0 mm High 24
20 Aug 36.2 °C 34 % 29 km/h 0.0 mm High 29
21 Aug 35.1 °C 38 % 25 km/h 0.0 mm High 28
22 Aug 37.8 °C 31 % 28 km/h 0.0 mm High 32
23 Aug 36.9 °C 34 % 26 km/h 0.0 mm High 31
24 Aug 36.8 °C 32 % 35 km/h 0.1 mm High 31
25 Aug 36.0 °C 31 % 32 km/h 0.0 mm High 34
26 Aug 34.1 °C 34 % 34 km/h 0.0 mm High 35
27 Aug 36.4 °C 30 % 25 km/h 0.0 mm High 33
28 Aug 36.3 °C 30 % 24 km/h 0.0 mm High 32
29 Aug 33.4 °C 47 % 26 km/h 0.7 mm High 22
30 Aug 36.2 °C 31 % 31 km/h 0.0 mm High 31
31 Aug 37.8 °C 28 % 31 km/h 0.0 mm High 36
1 Sept 37.0 °C 29 % 30 km/h 0.0 mm High 35
2 Sept after 38.0 °C 26 % 28 km/h 0.0 mm High 37
3 Sept after 36.0 °C 39 % 28 km/h 0.0 mm High 33
4 Sept after 36.3 °C 35 % 26 km/h 0.0 mm High 34
5 Sept after 38.5 °C 25 % 32 km/h 0.0 mm High 38
6 Sept after 34.7 °C 40 % 30 km/h 0.0 mm High 33
7 Sept after 33.8 °C 38 % 27 km/h 0.0 mm High 32
8 Sept after 36.6 °C 35 % 23 km/h 0.0 mm High 30
9 Sept after 36.3 °C 36 % 26 km/h 0.0 mm High 31
10 Sept after 35.8 °C 42 % 31 km/h 0.1 mm High 30
11 Sept after 37.1 °C 37 % 34 km/h 0.0 mm High 32
12 Sept after 38.6 °C 27 % 29 km/h 0.0 mm High 36
13 Sept after 37.5 °C 32 % 28 km/h 0.0 mm High 35
14 Sept after 36.9 °C 38 % 29 km/h 0.1 mm High 34

Before and after, from space

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

Before · 27 Jul 2024
After · 8 Sept 2024

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 29 August 2024 the air beside the fire reached 428 µg/m³ of PM2.5. That day averaged 243: 16 times the WHO daily guideline (15).

PM2.5 peak428 µg/m³
Days over the guideline35 days
PM10613 µg/m³
Optical depth3.51
123456789101112131415161718192021222324252627282930311234
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 · 1,265Every 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 Apuí fire last?
GWIS (Copernicus) dates it between 3 August 2024 and 1 September 2024: 30 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 9,050 hectares (90.5 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Apuí (9,097 ha, 0.2 %).
What was the weather like?
During the fire the temperature reached 38.1 °C, humidity dropped to 22 % and gusts hit 37 km/h. The fire danger index (FWI) reached 40, 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

Satellite cross-check

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.

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.