How long did the Humaitá fire last?

GWIS (Copernicus) dates it between 6 August 2022 and 17 August 2022: 12 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 3,117 hectares (31.2 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire only entered Humaitá (3,138 ha, 0.1 %).

What was the weather like?

During the fire the temperature reached 35.9 °C, humidity dropped to 27 % and gusts hit 44 km/h. The fire danger index (FWI) reached 30, 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 · 2022-08-06 → 2022-08-17

Humaitá fire, 6 August 2022 Humaitá

Out · last detection 18 Aug 2022, 16:58 UTC

The fire started on 6 August 2022 in Humaitá, Brazil, and satellites saw it burning for 12 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,117 hectares from heat detections, spread across a single municipality.

It is the 416th largest in Amazonas since 2016 (of 450 with a page). Number 641 in Brazil in 2022, of 687.

Burnt area: 3,117ha; GWIS perimeter (Copernicus)
Duration: 12days; 6 Aug 2022 – 17 Aug 2022
Municipalities hit: 1; municipalities
Started on: 6 Aug; 2022
Heat detections: 128; in a single hotspot: 104 MW
Danger at start: 14; Moderate · FWI index
Energy released: 2.0GW; sum of detected power

Play back 18 Aug 2022

HOTSPOTS BY DAY 6 Aug17 Aug

How it evolved, day by day

1112131415161718

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

44km/h · peak gust

27%lowest humidity

It had gone 0 days without rain (1 mm or more) when it started. Rain came after the fire: 4.6 mm on 27 Aug.

This area had burned before

3% of the perimeter overlaps earlier fires recorded since 2016: 106 ha in 2021.

What happened to each town

Humaitá 57,473 inhabitants where it started

3,138 ha reached on 11 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)
6 Aug	34.3 °C	45 %	20 km/h	0.3 mm	Moderate 14
7 Aug	33.7 °C	47 %	23 km/h	0.5 mm	Moderate 17
8 Aug	31.3 °C	54 %	16 km/h	1.0 mm	Moderate 12
9 Aug	35.9 °C	40 %	30 km/h	0.3 mm	High 22
10 Aug	29.0 °C	53 %	39 km/h	3.1 mm	Low 6
11 Aug	32.0 °C	40 %	27 km/h	0.0 mm	Moderate 15
12 Aug	33.9 °C	37 %	20 km/h	0.0 mm	Moderate 20
13 Aug	34.8 °C	37 %	21 km/h	0.0 mm	High 22
14 Aug	33.5 °C	46 %	26 km/h	0.0 mm	High 24
15 Aug	33.6 °C	45 %	29 km/h	0.0 mm	High 23
16 Aug	33.9 °C	45 %	29 km/h	1.0 mm	Moderate 17
17 Aug	33.9 °C	47 %	30 km/h	1.7 mm	Moderate 13
18 Aug after	34.4 °C	46 %	18 km/h	0.3 mm	Moderate 17
19 Aug after	26.6 °C	62 %	44 km/h	2.8 mm	Low 6
20 Aug after	27.8 °C	40 %	37 km/h	0.0 mm	Moderate 15
21 Aug after	31.4 °C	36 %	27 km/h	0.0 mm	High 22
22 Aug after	34.0 °C	32 %	30 km/h	0.0 mm	High 26
23 Aug after	34.9 °C	31 %	24 km/h	0.0 mm	High 27
24 Aug after	35.3 °C	27 %	17 km/h	0.0 mm	High 30
25 Aug after	34.6 °C	38 %	17 km/h	0.0 mm	High 29
26 Aug after	33.7 °C	44 %	24 km/h	0.2 mm	High 26
27 Aug after	33.8 °C	48 %	24 km/h	4.6 mm	Very low 5

Before and after, from space

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

↔

Before · 30 Jul 2022

After · 24 Aug 2022

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 14 August 2022 the air beside the fire reached 376 µg/m³ of PM2.5. That day averaged 209: 14 times the WHO daily guideline (15).

PM2.5 peak376 µg/m³

Days over the guideline14 days

PM10536 µg/m³

Optical depth2.14

WHO 15

4567891011121314151617181920

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 · 128Every 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 Humaitá fire last?: GWIS (Copernicus) dates it between 6 August 2022 and 17 August 2022: 12 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 3,117 hectares (31.2 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire only entered Humaitá (3,138 ha, 0.1 %).
What was the weather like?: During the fire the temperature reached 35.9 °C, humidity dropped to 27 % and gusts hit 44 km/h. The fire danger index (FWI) reached 30, 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