How long did the Apuí fire last?

GWIS (Copernicus) dates it between 19 July 2024 and 14 August 2024: 27 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 3,978 hectares (39.8 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire entered 2 municipalities: Apuí (4,002 ha, 0.1 %); Novo Aripuanã (0 ha, 0.0 %).

What was the weather like?

During the fire the temperature reached 37.7 °C, humidity dropped to 24 % and gusts hit 41 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.

BR · Brazil · 2024-07-19 → 2024-08-14

Apuí fire, 19 July 2024 Apuí, Novo Aripuanã

Out · last detection 14 Aug 2024, 18:07 UTC

The fire started on 19 July 2024 in Apuí, Brazil, and satellites saw it burning for 27 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,978 hectares from heat detections, spread across 2 municipalities.

It is the 259th largest in Amazonas since 2016 (of 450 with a page). Number 916 in Brazil in 2024, of 1301.

Burnt area: 3,978ha; GWIS perimeter (Copernicus)
Duration: 27days; 19 Jul 2024 – 14 Aug 2024
Municipalities hit: 2; municipalities
Started on: 19 Jul; 2024
Heat detections: 718; in a single hotspot: 351 MW
Danger at start: 34; High · FWI index
Energy released: 11.2GW; sum of detected power

Play back 14 Aug 2024

HOTSPOTS BY DAY 19 Jul14 Aug

How it evolved, day by day

1920212223242930311234567891011121314

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

41km/h · peak gust

24%lowest humidity

It had gone 14 days without rain (1 mm or more) when it started. Rain came after the fire: 1.7 mm on 15 Aug.

This area had burned before

87% of the perimeter overlaps earlier fires recorded since 2016: 1,061 ha in 2021, 2,151 ha in 2022, 2,688 ha in 2023. Part of it burned more than once, so the yearly figures add up to more than the 3,475 ha that had burned before.

What happened to each town

Apuí 20,647 inhabitants where it started

4,002 ha reached on 19 Jul

0.1 %
Novo Aripuanã 23,818 inhabitants

0 ha

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)
19 Jul	35.7 °C	29 %	24 km/h	0.0 mm	High 34
20 Jul	36.1 °C	28 %	32 km/h	0.0 mm	High 35
21 Jul	36.1 °C	31 %	32 km/h	0.0 mm	High 35
22 Jul	35.7 °C	30 %	23 km/h	0.0 mm	High 35
23 Jul	35.4 °C	29 %	27 km/h	0.0 mm	High 35
24 Jul	35.8 °C	30 %	20 km/h	0.0 mm	High 33
25 Jul	35.3 °C	34 %	19 km/h	0.0 mm	High 34
26 Jul	35.5 °C	32 %	24 km/h	0.0 mm	High 34
27 Jul	34.6 °C	35 %	20 km/h	0.0 mm	High 33
28 Jul	35.8 °C	29 %	22 km/h	0.0 mm	High 34
29 Jul	36.8 °C	29 %	33 km/h	0.0 mm	High 34
30 Jul	36.9 °C	28 %	31 km/h	0.0 mm	High 35
31 Jul	36.5 °C	29 %	19 km/h	0.0 mm	High 34
1 Aug	36.6 °C	29 %	20 km/h	0.0 mm	High 32
2 Aug	35.9 °C	31 %	20 km/h	0.0 mm	High 33
3 Aug	35.3 °C	38 %	24 km/h	0.0 mm	High 32
4 Aug	36.5 °C	29 %	31 km/h	0.0 mm	High 35
5 Aug	36.4 °C	27 %	32 km/h	0.0 mm	High 37
6 Aug	35.8 °C	31 %	23 km/h	0.0 mm	High 36
7 Aug	37.2 °C	26 %	24 km/h	0.0 mm	High 35
8 Aug	37.7 °C	24 %	21 km/h	0.0 mm	High 37
9 Aug	37.5 °C	26 %	28 km/h	0.0 mm	Very high 40
10 Aug	32.2 °C	39 %	41 km/h	0.0 mm	High 37
11 Aug	33.7 °C	30 %	23 km/h	0.0 mm	High 31
12 Aug	34.5 °C	31 %	32 km/h	0.0 mm	High 32
13 Aug	35.1 °C	28 %	24 km/h	0.0 mm	High 34
14 Aug	35.3 °C	37 %	23 km/h	0.0 mm	High 33
15 Aug after	34.9 °C	42 %	26 km/h	1.7 mm	Moderate 19

Before and after, from space

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

↔

Before · 12 Jul 2024

After · 21 Aug 2024

Before After

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 25 July 2024 the air beside the fire reached 538 µg/m³ of PM2.5. That day averaged 278: 19 times the WHO daily guideline (15).

PM2.5 peak538 µg/m³

Days over the guideline29 days

PM10767 µg/m³

Optical depth3.12

WHO 15

1718192021222324252627282930311234567891011121314151617

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 · 718Every 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 time	Satellite	FRP (MW)	Lat	Lon

Other fires nearby

All fires in Brazil ›

Frequently asked questions

How long did the Apuí fire last?: GWIS (Copernicus) dates it between 19 July 2024 and 14 August 2024: 27 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 3,978 hectares (39.8 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire entered 2 municipalities: Apuí (4,002 ha, 0.1 %); Novo Aripuanã (0 ha, 0.0 %).
What was the weather like?: During the fire the temperature reached 37.7 °C, humidity dropped to 24 % and gusts hit 41 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

INPE · Programa Queimadas ↗
IBAMA · Prevfogo ↗

Satellite cross-check

NASA FIRMS ↗
GWIS · Copernicus ↗

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.

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What really happened?

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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.

Where it burned