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AU · Australia · –

Central Desert fire, 26 September 2023 Central Desert

Out · last detection 3 Oct 2023, 16:08 UTC

The fire started on 26 September 2023 in Central Desert, Australia, and satellites saw it burning for 8 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 17,166 hectares from heat detections, spread across a single municipality.

This entry is probably a savanna fire in Australia’s tropical north, not a bushfire like those in the south of the country. Millions of hectares of northern savanna and grassland burn every year: much of it in burns lit on purpose early in the dry season (traditional fire management, parks and cattle stations), the rest in grass fires that return to the same ground every few years. This is our assumption, based on the location; it is not confirmed. That is why it is left out of the wildfire rankings.

Burnt area
17,166ha
GWIS perimeter (Copernicus)
Duration
8days
26 Sept 2023 – 3 Oct 2023
Municipalities hit
1
local government areas
Started on
26 Sept
2023
Heat detections
734
in a single hotspot: 204 MW
Danger at start
65
Extreme · FWI index
Average daily power
1.1GW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 26 Sept3 Oct
3 Oct 2023

How it evolved, day by day

26 Sept 2023 · 1,257 MW · 173 27 Sept 2023 · 3,271 MW · 233 28 Sept 2023 · 256 MW · 54 29 Sept 2023 · 2 MW · 2 30 Sept 2023 · 1,176 MW · 52 1 Oct 2023 · 682 MW · 69 2 Oct 2023 · 237 MW · 23 3 Oct 2023 · 1,695 MW · 128
27 Sept 30 Sept 2 Oct

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
58km/h · peak gust
9%lowest humidity

It had gone more than two months without rain (1 mm or more) when it started.

This area had burned before

2% of the perimeter overlaps earlier fires recorded since 2016: 329 ha in 2019, 1 ha in 2022.

How big is it?

10 km
It burned the equivalent of 11% of the area of London (172 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

  1. Central Desert where it started
    17,312 ha reached on 26 Sept
    0.1 %

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< 20

Inside the perimeter there was no noticeable built-up land and almost nobody lived there (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)

Started with Very dry air: 28 % of the area in Australia 60 days without rain: 7.6 % of the area in Australia

Day High Min. humidity Peak gust Rain Danger (FWI)
26 Sept 34.4 °C 9 % 40 km/h 0.0 mm Extreme 65
27 Sept 34.3 °C 13 % 51 km/h 0.0 mm Very extreme 79
28 Sept 33.4 °C 14 % 58 km/h 0.0 mm Very extreme 84
29 Sept 33.3 °C 15 % 51 km/h 0.0 mm Very extreme 74
30 Sept 33.9 °C 14 % 34 km/h 0.0 mm Extreme 55
1 Oct 36.4 °C 12 % 39 km/h 0.0 mm Extreme 60
2 Oct 37.1 °C 13 % 51 km/h 0.0 mm Very extreme 76
3 Oct 37.8 °C 13 % 45 km/h 0.0 mm Very extreme 76
4 Oct after 29.6 °C 9 % 59 km/h 0.0 mm Very extreme 87
5 Oct after 29.5 °C 10 % 50 km/h 0.0 mm Very extreme 77
6 Oct after 29.6 °C 10 % 52 km/h 0.0 mm Very extreme 80
7 Oct after 29.1 °C 11 % 50 km/h 0.0 mm Very extreme 76
8 Oct after 30.1 °C 13 % 51 km/h 0.0 mm Very extreme 74
9 Oct after 31.4 °C 9 % 44 km/h 0.0 mm Extreme 69
10 Oct after 31.8 °C 6 % 52 km/h 0.0 mm Very extreme 77
11 Oct after 33.2 °C 8 % 40 km/h 0.0 mm Extreme 67
12 Oct after 35.7 °C 8 % 38 km/h 0.0 mm Extreme 67
13 Oct after 34.4 °C 10 % 54 km/h 0.0 mm Very extreme 84

Its twins: fires that started in the same weather

It started with an FWI of 64.6, a minimum humidity of 9% and more than two months without rain. Fires in the area that started in weather like this since 2017: 7.

FWI at the start 64.6
Minimum humidity 9 %
Days without rain 60+
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

MacDonnell fire, November 2023
8,265 ha 6 days FWI 64.4 Min. humidity 18 % 220 km away, in 2023

First rain (1 mm or more) after it ended: 1.9 mm on 8 Nov.

What happened to them

Fires in the area that started in similar weather: 7. With fewer than 15 we give no figures: they would be more noise than signal.

This is a bank of analogues: it shows what usually happens, not what will happen. With fewer than 15 twins we give no figures. How we calculate it

How it ended

—first rain
—no rain in ten days
58km/h · max. gust

It was considered over on 3 Oct, and not even 1 mm fell in the following ten days: it went out without rain.

Weather on this page: Open-Meteo.com (CC BY 4.0) · Copernicus Climate Change Service (ERA5)

How a twin is chosen

  • Same area: fires that have already ended, less than 250 km from this one, since 2017.
  • Same start: we compare the FWI on the first day, the minimum humidity that day and the run of days without rain before it. The slider sets how much they may differ.
  • Only pages with final weather data (ERA5 reanalysis) calculated in the same way as this fire’s; agricultural and grass burns and pages with data under review are left out.
  • Fires burning at the same time as this one (a week before or after) are left out: they share the same spell of weather and do not count as a precedent.
  • They are sorted by similarity, and the outlines of the first five are drawn.

How we calculate it

Before and after, from space

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

Before · 19 Sept 2023
After · 10 Oct 2023

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 30 September 2023 the air beside the fire reached 53 µg/m³ of PM2.5. That day averaged 28: 1.9 times the WHO daily guideline (15).

PM2.5 peak53 µg/m³
Days over the guideline3 days
PM1076 µg/m³
Optical depth1.33
24 Sept27 Sept30 Sept3 Oct6 Oct
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 · 734Every 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 Australia

Frequently asked questions

How long did the Central Desert fire last?
GWIS (Copernicus) dates it between 26 September 2023 and 3 October 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 17,166 hectares (171.7 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Central Desert (17,312 ha, 0.1 %).
What was the weather like?
During the fire the temperature reached 37.8 °C, humidity dropped to 9 % and gusts hit 58 km/h. The fire danger index (FWI) reached 84, class Very extreme.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Australia (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: 000 · Emergency number and official warnings

Satellite cross-check

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

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 000.

How we know this
  • Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery; 2 polygons grouped in this page.
  • Dates from the perimeter: the VIIRS detections inside it did not change them. 734 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.
  • Probably a vegetation burn: not counted in the totals.

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 4.0 International (CC BY 4.0)). 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.