How long did the Manicoré fire last?

GWIS (Copernicus) dates it between 4 August 2023 and 11 August 2023: 8 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 3,211 hectares (32.1 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire entered 2 municipalities: Manicoré (2,978 ha, 0.1 %); Novo Aripuanã (260 ha, 0.0 %).

What was the weather like?

During the fire the temperature reached 36.3 °C, humidity dropped to 35 % and gusts hit 30 km/h. The fire danger index (FWI) reached 29, class 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 · 2023-08-04 → 2023-08-11

Manicoré fire, August 2023 Manicoré, Novo Aripuanã

Out · last detection 12 Aug 2023, 18:07 UTC

The fire started on 4 August 2023 in Manicoré, Brazil, and satellites saw it burning for 8 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,211 hectares from heat detections, spread across 2 municipalities.

It is the 399th largest in Amazonas since 2016 (of 450 with a page). Number 390 in Brazil in 2023, of 431.

Burnt area: 3,211ha; GWIS perimeter (Copernicus)
Duration: 8days; 4 Aug 2023 – 11 Aug 2023
Municipalities hit: 2; municipalities
Started on: 4 Aug; 2023
Heat detections: 234; in a single hotspot: 508 MW
Danger at start: 28; High · FWI index
Energy released: 3.4GW; sum of detected power

Play back 12 Aug 2023

HOTSPOTS BY DAY 4 Aug11 Aug

How it evolved, day by day

456789101112

Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.

The weather it burned in

36°high

30km/h · peak gust

35%lowest humidity

It had gone 18 days without rain (1 mm or more) when it started. Rain came after the fire: 4.5 mm on 26 Aug.

This area had burned before

6% of the perimeter overlaps earlier fires recorded since 2016: 187 ha in 2020, 289 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 189 ha that had burned before.

11 ha Manicoré fire, July 2020 4,122 ha in total; the hectares shown are those it shares with this fire

What happened to each town

Manicoré where it started

2,978 ha reached on 4 Aug

0.1 %
Novo Aripuanã 23,818 inhabitants

260 ha reached on 5 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)
4 Aug	35.4 °C	37 %	19 km/h	0.0 mm	High 28
5 Aug	35.6 °C	39 %	20 km/h	0.0 mm	High 28
6 Aug	36.1 °C	35 %	24 km/h	0.0 mm	High 29
7 Aug	35.5 °C	43 %	23 km/h	0.1 mm	High 29
8 Aug	35.3 °C	46 %	24 km/h	0.5 mm	High 26
9 Aug	36.3 °C	41 %	24 km/h	0.2 mm	High 26
10 Aug	35.8 °C	44 %	26 km/h	0.7 mm	High 24
11 Aug	34.2 °C	47 %	28 km/h	0.5 mm	High 23
12 Aug after	34.4 °C	48 %	22 km/h	1.0 mm	Moderate 17
13 Aug after	28.3 °C	65 %	26 km/h	8.1 mm	Very low 2
14 Aug after	32.5 °C	54 %	25 km/h	0.3 mm	Low 8
15 Aug after	33.4 °C	43 %	21 km/h	0.0 mm	Moderate 18
16 Aug after	34.2 °C	37 %	18 km/h	0.0 mm	High 23
17 Aug after	34.1 °C	40 %	21 km/h	0.0 mm	High 24
18 Aug after	34.5 °C	41 %	30 km/h	0.0 mm	High 24
19 Aug after	36.5 °C	36 %	24 km/h	0.0 mm	High 26
20 Aug after	36.4 °C	36 %	24 km/h	0.0 mm	High 28
21 Aug after	36.1 °C	39 %	32 km/h	0.0 mm	High 28
22 Aug after	36.5 °C	36 %	24 km/h	0.0 mm	High 26
23 Aug after	36.2 °C	40 %	25 km/h	0.0 mm	High 27
24 Aug after	34.6 °C	46 %	27 km/h	0.6 mm	High 22
25 Aug after	35.1 °C	44 %	21 km/h	0.2 mm	High 22
26 Aug after	34.7 °C	44 %	20 km/h	4.5 mm	Low 6

Before and after, from space

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

↔

Before · 28 Jul 2023

After · 18 Aug 2023

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 6 August 2023 the air beside the fire reached 91 µg/m³ of PM2.5. That day averaged 62: 4.1 times the WHO daily guideline (15).

PM2.5 peak91 µg/m³

Days over the guideline13 days

PM10130 µg/m³

Optical depth0.97

WHO 15

234567891011121314

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 · 234Every 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 Manicoré fire last?: GWIS (Copernicus) dates it between 4 August 2023 and 11 August 2023: 8 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 3,211 hectares (32.1 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire entered 2 municipalities: Manicoré (2,978 ha, 0.1 %); Novo Aripuanã (260 ha, 0.0 %).
What was the weather like?: During the fire the temperature reached 36.3 °C, humidity dropped to 35 % and gusts hit 30 km/h. The fire danger index (FWI) reached 29, class 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