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Apuí fire, 10 August 2024 Maués, Apuí

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

The fire started on 10 August 2024 in Apuí, Brazil, and satellites saw it burning for 7 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,699 hectares from heat detections, spread across 2 municipalities.

It is the 295th largest in Amazonas since 2016 (of 450 with a page). Number 1000 in Brazil in 2024, of 1301.

Burnt area
3,699ha
GWIS perimeter (Copernicus)
Duration
7days
10 Aug 2024 – 16 Aug 2024
Municipalities hit
2
municipalities
Started on
10 Aug
2024
Heat detections
308
in a single hotspot: 274 MW
Danger at start
36
High · FWI index
Energy released
5.4GW
sum of detected power

Where it burned

16 Aug 2024
HOTSPOTS BY DAY 10 Aug16 Aug

How it evolved, day by day

10111213141516

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
38km/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

87% of the perimeter overlaps earlier fires recorded since 2016: 1,231 ha in 2021, 2,320 ha in 2022, 1,316 ha in 2023. Part of it burned more than once, so the yearly figures add up to more than the 3,202 ha that had burned before.

What happened to each town

  1. Maués 61,204 inhabitants
    1,989 ha reached on 3 Aug
    0.0 %
  2. Apuí 20,647 inhabitants where it started
    1,737 ha reached on 3 Aug
    0.0 %

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)
3 Aug 35.2 °C 38 % 31 km/h 0.0 mm High 36
4 Aug 36.1 °C 28 % 34 km/h 0.0 mm Very high 39
5 Aug 36.5 °C 25 % 34 km/h 0.0 mm Very high 40
6 Aug 35.1 °C 32 % 27 km/h 0.0 mm Very high 38
7 Aug 37.7 °C 23 % 26 km/h 0.0 mm Very high 38
8 Aug 38.2 °C 22 % 27 km/h 0.0 mm Very high 39
9 Aug 38.0 °C 24 % 26 km/h 0.0 mm Very high 40
10 Aug 34.8 °C 33 % 38 km/h 0.0 mm Very high 42
11 Aug 35.2 °C 28 % 22 km/h 0.0 mm High 35
12 Aug 35.8 °C 28 % 31 km/h 0.0 mm High 37
13 Aug 34.1 °C 36 % 18 km/h 0.0 mm High 33
14 Aug 35.3 °C 42 % 26 km/h 1.0 mm High 24
15 Aug 34.0 °C 49 % 30 km/h 5.2 mm Low 7
16 Aug 34.3 °C 48 % 29 km/h 0.3 mm Moderate 15
17 Aug after 35.1 °C 38 % 21 km/h 0.0 mm High 23
18 Aug after 35.4 °C 38 % 24 km/h 0.0 mm High 26
19 Aug after 35.6 °C 38 % 29 km/h 0.0 mm High 25
20 Aug after 36.4 °C 33 % 28 km/h 0.0 mm High 30
21 Aug after 35.7 °C 35 % 24 km/h 0.0 mm High 29
22 Aug after 38.4 °C 27 % 29 km/h 0.0 mm High 36
23 Aug after 36.7 °C 34 % 27 km/h 0.0 mm High 34
24 Aug after 36.4 °C 31 % 34 km/h 0.2 mm High 35
25 Aug after 36.4 °C 27 % 32 km/h 0.0 mm High 37
26 Aug after 34.4 °C 34 % 34 km/h 0.0 mm High 37
27 Aug after 36.3 °C 30 % 26 km/h 0.0 mm High 33
28 Aug after 35.8 °C 30 % 22 km/h 0.0 mm High 33
29 Aug after 33.4 °C 46 % 26 km/h 0.1 mm High 29
30 Aug after 36.3 °C 29 % 30 km/h 0.0 mm High 33
31 Aug after 37.8 °C 27 % 30 km/h 0.0 mm High 36
1 Sept after 36.9 °C 27 % 29 km/h 0.0 mm High 36

Before and after, from space

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

Before · 3 Aug 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 16 August 2024 the air beside the fire reached 195 µg/m³ of PM2.5. That day averaged 110: 7.3 times the WHO daily guideline (15).

PM2.5 peak195 µg/m³
Days over the guideline12 days
PM10278 µg/m³
Optical depth2.51
8910111213141516171819
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 · 308Every 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 10 August 2024 and 16 August 2024: 7 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 3,699 hectares (37.0 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Maués (1,989 ha, 0.0 %); Apuí (1,737 ha, 0.0 %).
What was the weather like?
During the fire the temperature reached 38.4 °C, humidity dropped to 22 % and gusts hit 38 km/h. The fire danger index (FWI) reached 42, 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.