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Apuí fire, 3 August 2024 Apuí

Out · last detection 16 Aug 2024, 04:52 UTC

The fire started on 3 August 2024 in Apuí, Brazil, and satellites saw it burning for 14 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,447 hectares from heat detections, spread across a single municipality.

It is the 340th largest in Amazonas since 2016 (of 450 with a page). Number 1083 in Brazil in 2024, of 1301.

Burnt area
3,447ha
GWIS perimeter (Copernicus)
Duration
14days
3 Aug 2024 – 16 Aug 2024
Municipalities hit
1
municipalities
Started on
3 Aug
2024
Heat detections
341
in a single hotspot: 123 MW
Danger at start
40
Very high · FWI index
Energy released
4.3GW
sum of detected power

Where it burned

16 Aug 2024
HOTSPOTS BY DAY 3 Aug16 Aug

How it evolved, day by day

345678910111213141516

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 18 days without rain (1 mm or more) when it started.

This area had burned before

95% of the perimeter overlaps earlier fires recorded since 2016: 1,551 ha in 2021, 4,672 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 3,272 ha that had burned before.

What happened to each town

  1. Apuí 20,647 inhabitants where it started
    3,463 ha reached on 3 Aug
    0.1 %

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 37.2 °C 27 % 33 km/h 0.0 mm Very high 40
31 Jul 36.4 °C 30 % 26 km/h 0.0 mm High 38
1 Aug 36.3 °C 33 % 25 km/h 0.0 mm High 35
2 Aug 35.4 °C 34 % 20 km/h 0.0 mm High 33
3 Aug 35.4 °C 38 % 27 km/h 0.0 mm High 33
4 Aug 36.1 °C 30 % 31 km/h 0.0 mm High 36
5 Aug 36.2 °C 28 % 31 km/h 0.0 mm High 36
6 Aug 34.4 °C 38 % 26 km/h 0.0 mm High 33
7 Aug 37.6 °C 24 % 24 km/h 0.0 mm High 36
8 Aug 38.2 °C 22 % 24 km/h 0.0 mm Very high 39
9 Aug 37.6 °C 26 % 27 km/h 0.0 mm Very high 40
10 Aug 34.1 °C 36 % 37 km/h 0.0 mm Very high 39
11 Aug 34.3 °C 30 % 21 km/h 0.0 mm High 35
12 Aug 34.6 °C 31 % 31 km/h 0.0 mm High 35
13 Aug 34.6 °C 31 % 22 km/h 0.0 mm High 35
14 Aug 35.0 °C 42 % 24 km/h 0.4 mm High 32
15 Aug 34.8 °C 48 % 31 km/h 10.7 mm Low 6
16 Aug 33.7 °C 51 % 28 km/h 6.0 mm Very low 3
17 Aug after 35.0 °C 39 % 21 km/h 0.0 mm Moderate 13
18 Aug after 34.8 °C 46 % 23 km/h 0.1 mm Moderate 17
19 Aug after 34.9 °C 43 % 25 km/h 0.0 mm Moderate 18
20 Aug after 35.2 °C 40 % 26 km/h 0.0 mm High 22
21 Aug after 35.1 °C 41 % 26 km/h 0.0 mm Moderate 21
22 Aug after 37.5 °C 31 % 25 km/h 0.0 mm High 27
23 Aug after 37.5 °C 31 % 24 km/h 0.0 mm High 28
24 Aug after 36.1 °C 38 % 32 km/h 0.1 mm High 29
25 Aug after 35.4 °C 39 % 31 km/h 0.1 mm High 29
26 Aug after 34.1 °C 34 % 31 km/h 0.0 mm High 31
27 Aug after 35.8 °C 32 % 25 km/h 0.0 mm High 30
28 Aug after 35.5 °C 32 % 22 km/h 0.0 mm High 29
29 Aug after 32.7 °C 51 % 26 km/h 0.9 mm Moderate 18
30 Aug after 36.5 °C 29 % 31 km/h 0.0 mm High 30
31 Aug after 37.0 °C 31 % 28 km/h 0.0 mm High 31
1 Sept after 36.5 °C 32 % 27 km/h 0.0 mm High 31
2 Sept after 37.2 °C 30 % 24 km/h 0.0 mm High 32

Before and after, from space

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

Before · 27 Jul 2024
After · 23 Aug 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 1 August 2024 the air beside the fire reached 536 µg/m³ of PM2.5. That day averaged 309: 21 times the WHO daily guideline (15).

PM2.5 peak536 µg/m³
Days over the guideline19 days
PM10767 µg/m³
Optical depth5.72
12345678910111213141516171819
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 · 341Every 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 16 August 2024: 14 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 3,447 hectares (34.5 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Apuí (3,463 ha, 0.1 %).
What was the weather like?
During the fire the temperature reached 38.2 °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.