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AU · Australia · –

Roper Gulf fire, 23 October 2022 Roper Gulf

Out · last detection 5 Nov 2022, 05:23 UTC

The fire started on 23 October 2022 in Roper Gulf, Australia, and satellites saw it burning for 14 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 10,920 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.

Compare with…
Burnt area
10,920ha
GWIS perimeter (Copernicus)
Duration
14days
23 Oct 2022 – 5 Nov 2022
Municipalities hit
1
local government areas
Started on
23 Oct
2022
Heat detections
338
in a single hotspot: 189 MW
Danger at start
53
Extreme · FWI index
Average daily power
289MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 23 Oct5 Nov
5 Nov 2022

How it evolved, day by day

23 Oct 2022 · 260 MW · 15 24 Oct 2022 · 280 MW · 34 25 Oct 2022 · 57 MW · 5 26 Oct 2022 · 45 MW · 12 27 Oct 2022 · 594 MW · 33 28 Oct 2022 · 609 MW · 64 29 Oct 2022 · 357 MW · 24 30 Oct 2022 · 151 MW · 34 31 Oct 2022 · 444 MW · 73 1 Nov 2022 · 656 MW · 38 4 Nov 2022 · 8 MW · 2 5 Nov 2022 · 12 MW · 4
23 Oct 26 Oct 29 Oct 1 Nov

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

The weather it burned in

43°high
49km/h · peak gust
7%lowest humidity

It had gone 2 days without rain (1 mm or more) when it started. Rain came after the fire: 3.1 mm on 13 Nov.

This area had burned before

64% of the perimeter overlaps earlier fires recorded since 2016: 479 ha in 2016, 6,551 ha in 2018, 374 ha in 2020. Part of it burned more than once, so the yearly figures add up to more than the 7,035 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 6.9% of the area of London (109 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. Roper Gulf where it started
    10,963 ha reached on 23 Oct
    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 2020
Built-up area< 0.1 ha
Residents< 20

Inside the perimeter there was no noticeable built-up land and almost nobody lived there (GHSL 2020, 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.

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)
23 Oct 41.9 °C 15 % 37 km/h 0.0 mm Extreme 53
24 Oct 40.6 °C 27 % 37 km/h 0.0 mm Extreme 64
25 Oct 41.9 °C 20 % 35 km/h 0.0 mm Extreme 56
26 Oct 39.3 °C 28 % 34 km/h 0.1 mm Very high 45
27 Oct 42.2 °C 17 % 37 km/h 0.0 mm Very high 45
28 Oct 40.5 °C 19 % 49 km/h 0.0 mm Very high 48
29 Oct 40.8 °C 19 % 38 km/h 0.0 mm Extreme 54
30 Oct 42.3 °C 21 % 37 km/h 0.0 mm Extreme 52
31 Oct 42.1 °C 20 % 35 km/h 0.0 mm Extreme 54
1 Nov 42.8 °C 16 % 45 km/h 0.0 mm Extreme 65
2 Nov 37.0 °C 42 % 45 km/h 0.9 mm Extreme 54
3 Nov 35.3 °C 19 % 48 km/h 0.0 mm Very extreme 71
4 Nov 37.1 °C 7 % 40 km/h 0.0 mm Very extreme 80
5 Nov 38.5 °C 10 % 37 km/h 0.0 mm Very extreme 75
6 Nov after 39.8 °C 13 % 29 km/h 0.0 mm Extreme 63
7 Nov after 40.7 °C 14 % 39 km/h 0.0 mm Very high 49
8 Nov after 39.9 °C 21 % 40 km/h 0.1 mm Extreme 60
9 Nov after 40.7 °C 21 % 38 km/h 0.0 mm Extreme 55
10 Nov after 39.6 °C 28 % 41 km/h 0.0 mm Extreme 51
11 Nov after 39.4 °C 25 % 39 km/h 0.0 mm Very high 50
12 Nov after 40.2 °C 26 % 30 km/h 0.0 mm Very high 43
13 Nov after 36.1 °C 38 % 32 km/h 3.1 mm High 22

Before and after, from space

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

Before · 16 Oct 2022
After · 12 Nov 2022

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 25 October 2022 the air beside the fire reached 36 µg/m³ of PM2.5. That day averaged 19: 1.2 times the WHO daily guideline (15).

PM2.5 peak36 µg/m³
Days over the guideline1 day
PM1053 µg/m³
Optical depth0.89
23 Oct26 Oct29 Oct1 Nov4 Nov
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 · 338Every 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 Roper Gulf fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 23 October 2022 to 5 November 2022 (14 days). The perimeter dates it from 25 October 2022 to 1 November 2022.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 10,920 hectares (109.2 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Roper Gulf (10,963 ha, 0.1 %).
What was the weather like?
During the fire the temperature reached 42.8 °C, humidity dropped to 7 % and gusts hit 49 km/h. The fire danger index (FWI) reached 80, 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 · 2 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
  1. Last day with fire: 1 November 2022 → 5 November 2022.
  2. Start date: 25 October 2022 → 23 October 2022.

RSS Changes to this page With cross-checks and a citable version

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.
  • Dates adjusted with the VIIRS detections inside the perimeter, which said 25 October 2022 to 1 November 2022. 338 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 2020, 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.