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Juara fire, 21 August 2024 Juara

Out · last detection 12 Sept 2024, 17:21 UTC

The fire started on 21 August 2024 in Juara, Brazil, and satellites saw it burning for 22 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 24,105 hectares from heat detections, spread across a single municipality.

It is the 154th largest in Mato Grosso since 2016 (of 1996 with a page). Number 124 in Brazil in 2024, of 1301.

Burnt area
24,105ha
GWIS perimeter (Copernicus)
Duration
22days
21 Aug 2024 – 11 Sept 2024
Municipalities hit
1
municipalities
Started on
21 Aug
2024
Heat detections
1,230
in a single hotspot: 248 MW
Danger at start
49
Very high · FWI index
Energy released
14.9GW
sum of detected power

Where it burned

12 Sept 2024
HOTSPOTS BY DAY 21 Aug11 Sept

How it evolved, day by day

21222324252627282930311234569101112

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

The weather it burned in

40°high
46km/h · peak gust
10%lowest humidity

It had gone more than two months without rain (1 mm or more) when it started. Rain came after the fire: 15.7 mm on 18 Sept.

This area had burned before

64% of the perimeter overlaps earlier fires recorded since 2016: 1,013 ha in 2016, 14,426 ha in 2021, 2,624 ha in 2022, 619 ha in 2023. Part of it burned more than once, so the yearly figures add up to more than the 15,404 ha that had burned before.

What happened to each town

  1. Juara 34,906 inhabitants where it started
    24,229 ha reached on 21 Aug
    1.1 %

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)
21 Aug 37.2 °C 18 % 36 km/h 0.0 mm Very high 49
22 Aug 38.3 °C 16 % 29 km/h 0.0 mm Very high 46
23 Aug 39.0 °C 16 % 26 km/h 0.0 mm Very high 45
24 Aug 36.2 °C 24 % 22 km/h 0.1 mm Very high 42
25 Aug 32.6 °C 31 % 38 km/h 0.0 mm Very high 46
26 Aug 31.6 °C 28 % 38 km/h 0.0 mm Very high 46
27 Aug 36.2 °C 20 % 26 km/h 0.0 mm Very high 40
28 Aug 38.8 °C 15 % 36 km/h 0.0 mm Extreme 52
29 Aug 37.4 °C 18 % 46 km/h 0.0 mm Extreme 58
30 Aug 36.8 °C 17 % 45 km/h 0.0 mm Extreme 56
31 Aug 37.2 °C 22 % 37 km/h 0.0 mm Extreme 52
1 Sept 38.1 °C 15 % 41 km/h 0.0 mm Extreme 54
2 Sept 38.2 °C 16 % 35 km/h 0.0 mm Extreme 52
3 Sept 37.0 °C 22 % 26 km/h 0.0 mm Very high 45
4 Sept 38.1 °C 17 % 34 km/h 0.0 mm Very high 49
5 Sept 39.6 °C 10 % 31 km/h 0.0 mm Extreme 56
6 Sept 38.6 °C 11 % 38 km/h 0.0 mm Extreme 57
7 Sept 38.3 °C 13 % 37 km/h 0.0 mm Extreme 58
8 Sept 38.9 °C 14 % 32 km/h 0.0 mm Extreme 55
9 Sept 38.3 °C 15 % 42 km/h 0.0 mm Extreme 62
10 Sept 38.5 °C 15 % 32 km/h 0.0 mm Extreme 55
11 Sept 38.5 °C 17 % 44 km/h 0.0 mm Extreme 65
12 Sept after 37.7 °C 22 % 24 km/h 0.0 mm Very high 45
13 Sept after 39.3 °C 18 % 27 km/h 0.0 mm Very high 47
14 Sept after 36.1 °C 28 % 28 km/h 0.0 mm Very high 42
15 Sept after 36.6 °C 27 % 31 km/h 0.0 mm Very high 44
16 Sept after 36.5 °C 28 % 29 km/h 0.0 mm Very high 41
17 Sept after 39.2 °C 17 % 28 km/h 0.0 mm Very high 46
18 Sept after 36.9 °C 34 % 67 km/h 15.7 mm High 25

Before and after, from space

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

Before · 14 Aug 2024
After · 18 Sept 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 4 September 2024 the air beside the fire reached 296 µg/m³ of PM2.5. That day averaged 168: 11 times the WHO daily guideline (15).

PM2.5 peak296 µg/m³
Days over the guideline32 days
PM10425 µg/m³
Optical depth4.59
19202122232425262728293031123456789101112131415161718192021
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 · 1,230Every 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 Juara fire last?
GWIS (Copernicus) dates it between 21 August 2024 and 11 September 2024: 22 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 24,105 hectares (241.0 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Juara (24,229 ha, 1.1 %).
What was the weather like?
During the fire the temperature reached 39.6 °C, humidity dropped to 10 % and gusts hit 46 km/h. The fire danger index (FWI) reached 65, class Extreme.
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.