How long did the Mucajaí fire last?

According to the heat detections seen by satellite inside the perimeter, it burned from 10 February 2024 to 26 February 2024 (17 days). The perimeter dates it from 10 February 2024 to 25 February 2024.

How much area did it burn?

The perimeter GWIS (Copernicus) rebuilt from heat detections is 44,596 hectares (446.0 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire only entered Mucajaí (44,897 ha, 3.6 %).

What was the weather like?

During the fire the temperature reached 37.0 °C, humidity dropped to 23 % and gusts hit 48 km/h. The fire danger index (FWI) reached 43, 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 · 2024-02-10 → 2024-02-26

Mucajaí fire, 10 February 2024 Mucajaí

Out · last detection 26 Feb 2024, 05:14 UTC

The fire started on 10 February 2024 in Mucajaí, Brazil, and satellites saw it burning for 17 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 44,596 hectares from heat detections, spread across a single municipality.

It is the 2th largest in Roraima since 2016 (of 121 with a page). Number 56 in Brazil in 2024, of 1301.

Compare with…

Suggestions: Iracema · 2019 Mucajaí · 2016 Mucajaí · 2016 Mucajaí · 2024

Burnt area: 44,596ha; GWIS perimeter (Copernicus)
Duration: 17days; 10 Feb 2024 – 26 Feb 2024
Municipalities hit: 1; municipalities
Started on: 10 Feb; 2024
Heat detections: 3,011; in a single hotspot: 280 MW
Danger at start: 31; High · FWI index
Average daily power: 1.6GW; detected power per day, on average

HOTSPOTS BY DAY 10 Feb26 Feb

Play back 26 Feb 2024

How it evolved, day by day

10 Feb 13 Feb 17 Feb 20 Feb 23 Feb 26 Feb

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

The weather it burned in

37°high

48km/h · peak gust

23%lowest humidity

It had gone 40 days without rain (1 mm or more) when it started. Rain came after the fire: 3.0 mm on 2 Mar.

This area had burned before

96% of the perimeter overlaps earlier fires recorded since 2016: 13,704 ha in 2016, 460 ha in 2018, 42,248 ha in 2019. Part of it burned more than once, so the yearly figures add up to more than the 42,609 ha that had burned before.

How big is it?

It burned the equivalent of 28% of the area of London (446 km² against 1,583 km²).

London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).

This compares size, not location: both shapes are at the same scale, north up, centred on each other.

What happened to each town

Mucajaí 18,095 inhabitants where it started

44,897 ha reached on 10 Feb

3.6 %

Burnt area inside each municipality, from crossing the GWIS perimeter with administrative boundaries. The distance runs from the point marking the centre of each area to the nearest fire: staying a kilometre away does not mean it reached the houses.

People and buildings inside the perimeter

GHSL 2025

Built-up area< 0.1 ha

Residents≈ 50

Inside the perimeter there were about 0.00 hectares of built-up land and about 50 residents (GHSL 2025, satellite-based estimate).

This is an estimate on 100 m cells, made from satellite imagery and census data: it does not mean that homes burned or that anyone was harmed. The perimeter also contains land that never burned. The GHSL 2025 epoch is a projection made from 2020 and earlier data.

Source: Global Human Settlement Layer (GHS-BUILT-S and GHS-POP R2023A), European Commission Joint Research Centre (JRC), © European Union, CC BY 4.0. Sum inside the perimeter computed by WorldFires. human-settlement.emergency.copernicus.eu

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)
10 Feb	35.0 °C	37 %	46 km/h	0.0 mm	High 31
11 Feb	35.6 °C	31 %	48 km/h	0.0 mm	High 38
12 Feb	34.2 °C	37 %	43 km/h	0.0 mm	High 35
13 Feb	33.3 °C	42 %	48 km/h	0.5 mm	High 33
14 Feb	34.7 °C	46 %	48 km/h	0.3 mm	High 29
15 Feb	34.6 °C	38 %	39 km/h	0.0 mm	High 29
16 Feb	36.4 °C	27 %	40 km/h	0.0 mm	High 38
17 Feb	35.5 °C	33 %	43 km/h	0.0 mm	Very high 38
18 Feb	36.5 °C	33 %	48 km/h	0.0 mm	Very high 39
19 Feb	36.4 °C	23 %	46 km/h	0.0 mm	Very high 43
20 Feb	36.1 °C	27 %	44 km/h	0.0 mm	Very high 42
21 Feb	36.5 °C	25 %	40 km/h	0.0 mm	Very high 41
22 Feb	37.0 °C	26 %	40 km/h	0.0 mm	Very high 41
23 Feb	36.9 °C	29 %	39 km/h	0.0 mm	Very high 41
24 Feb	36.8 °C	35 %	46 km/h	0.1 mm	Very high 40
25 Feb	36.5 °C	34 %	42 km/h	0.0 mm	Very high 40
26 Feb	34.4 °C	41 %	32 km/h	1.4 mm	Moderate 19
27 Feb after	33.1 °C	45 %	25 km/h	0.8 mm	Moderate 18
28 Feb after	36.5 °C	32 %	31 km/h	0.1 mm	High 30
29 Feb after	35.2 °C	34 %	32 km/h	0.0 mm	High 31
1 Mar after	36.4 °C	35 %	34 km/h	0.0 mm	High 31
2 Mar after	33.9 °C	41 %	26 km/h	3.0 mm	Low 11

Before and after, from space

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

↔

Before · 3 Feb 2024

After · 4 Mar 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 23 February 2024 the air beside the fire reached 134 µg/m³ of PM2.5. That day averaged 62: 4.1 times the WHO daily guideline (15).

PM2.5 peak134 µg/m³

Days over the guideline17 days

PM10192 µg/m³

Optical depth2.30

WHO 15

8910111213141516171819202122232425262728

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 · 3,011Every 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 Mucajaí fire last?: According to the heat detections seen by satellite inside the perimeter, it burned from 10 February 2024 to 26 February 2024 (17 days). The perimeter dates it from 10 February 2024 to 25 February 2024.
How much area did it burn?: The perimeter GWIS (Copernicus) rebuilt from heat detections is 44,596 hectares (446.0 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire only entered Mucajaí (44,897 ha, 3.6 %).
What was the weather like?: During the fire the temperature reached 37.0 °C, humidity dropped to 23 % and gusts hit 48 km/h. The fire danger index (FWI) reached 43, 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 · Emergency number and official warnings ›

INPE · Programa Queimadas ↗
IBAMA · Prevfogo ↗

Satellite cross-check

NASA FIRMS ↗
GWIS · Copernicus ↗

History of this page · 1 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.

25 October 2026 Last day with fire: 25 February 2024 → 26 February 2024.

RSS Changes to this page

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?

Dates or duration Place or towns Burned area Name It was not a wildfire Same fire as another page Something else

What really happened?

Your connection to the fire (optional) Email (optional)

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.

How we know this

Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery; 3 polygons grouped in this page.
Dates adjusted with the VIIRS detections inside the perimeter, which said 10 February 2024 to 25 February 2024. 3,011 Suomi-NPP VIIRS detections on those dates.
We have not matched this page with any official record.
Weather: Copernicus ERA5 reanalysis at the fire location, in cells of about 25 km.
Built-up area and population come from the JRC Global Human Settlement Layer (epoch 2025, 100 m cells), summed inside the perimeter: an estimate of what was there, not a damage count.

How we build fire pages: methodology ›

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