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AU · Australia · –

Roper Gulf fire, 12 June 2026 Roper Gulf, West Arnhem

Out · last detection 14 Jul 2026, 16:04 UTC

The fire started on 12 June 2026 in Roper Gulf, Australia, and satellites saw it burning for 33 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 9,034 hectares from heat detections, spread across 2 municipalities.

Number 417 in Australia in 2026, of 926.

GWIS near-real-time perimeter, from the layer that changed in October 2025: this fire is not compared with fires from earlier years, because since then the GWIS layer gives more and larger perimeters.

Burnt area
9,034ha
GWIS perimeter (Copernicus)
Duration
33days
12 Jun 2026 – 14 Jul 2026
Municipalities hit
2
local government areas
Started on
12 Jun
2026
Heat detections
239
in a single hotspot: 35 MW
Danger at start
26
High · FWI index
Average daily power
69MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 12 Jun14 Jul
14 Jul 2026

How it evolved, day by day

15 Jun 2026 · 9 MW · 2 17 Jun 2026 · 771 MW · 111 18 Jun 2026 · 62 MW · 11 19 Jun 2026 · 122 MW · 19 20 Jun 2026 · 79 MW · 21 22 Jun 2026 · 5 MW · 3 23 Jun 2026 · 59 MW · 11 24 Jun 2026 · 17 MW · 4 25 Jun 2026 · 7 MW · 6 26 Jun 2026 · 15 MW · 2 27 Jun 2026 · 43 MW · 7 28 Jun 2026 · 9 MW · 1 3 Jul 2026 · 31 MW · 3 4 Jul 2026 · 18 MW · 4 5 Jul 2026 · 20 MW · 5 6 Jul 2026 · 23 MW · 5 7 Jul 2026 · 10 MW · 1 10 Jul 2026 · 23 MW · 4 11 Jul 2026 · 149 MW · 8 12 Jul 2026 · 25 MW · 4 13 Jul 2026 · 2 MW · 3 14 Jul 2026 · 27 MW · 4
17 Jun 22 Jun 27 Jun 6 Jul 13 Jul

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

The weather it burned in

31°high
49km/h · peak gust
36%lowest humidity

It had gone 23 days without rain (1 mm or more) when it started.

This area had burned before

94% of the perimeter overlaps earlier fires recorded since 2016: 4,190 ha in 2016, 693 ha in 2017, 2,950 ha in 2018, 3,637 ha in 2019, 2,134 ha in 2020, 1,351 ha in 2021, 1,844 ha in 2022, 5,232 ha in 2023, 624 ha in 2024, 1,436 ha in 2025. Part of it burned more than once, so the yearly figures add up to more than the 8,498 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 5.7% of the area of London (90 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
    7,031 ha reached on 15 Jun
    0.0 %
  2. 1,997 ha reached on 17 Jun
    0.0 %

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)

Day High Min. humidity Peak gust Rain Danger (FWI)
12 Jun 29.3 °C 51 % 49 km/h 0.1 mm High 26
13 Jun 30.1 °C 39 % 40 km/h 0.0 mm High 24
14 Jun 28.6 °C 47 % 49 km/h 0.1 mm High 28
15 Jun 29.9 °C 38 % 41 km/h 0.0 mm High 25
16 Jun 28.8 °C 49 % 38 km/h 0.2 mm High 25
17 Jun 28.6 °C 56 % 34 km/h 1.1 mm Moderate 13
18 Jun 30.2 °C 46 % 32 km/h 0.6 mm Moderate 16
19 Jun 26.7 °C 58 % 39 km/h 0.0 mm Moderate 20
20 Jun 27.0 °C 48 % 46 km/h 0.0 mm High 23
21 Jun 27.4 °C 46 % 44 km/h 0.0 mm High 24
22 Jun 27.9 °C 44 % 47 km/h 0.0 mm High 26
23 Jun 28.7 °C 38 % 41 km/h 0.0 mm High 27
24 Jun 29.2 °C 42 % 41 km/h 0.0 mm High 27
25 Jun 29.2 °C 41 % 38 km/h 0.0 mm High 26
26 Jun 28.6 °C 45 % 42 km/h 0.0 mm High 28
27 Jun 29.1 °C 40 % 41 km/h 0.0 mm High 28
28 Jun 29.4 °C 48 % 31 km/h 0.0 mm High 24
29 Jun 30.8 °C 44 % 27 km/h 0.0 mm High 24
30 Jun 31.3 °C 40 % 29 km/h 0.0 mm High 24
1 Jul 30.9 °C 44 % 26 km/h 0.0 mm High 24
2 Jul 30.7 °C 44 % 33 km/h 0.0 mm High 26
3 Jul 30.4 °C 42 % 43 km/h 0.0 mm High 30
4 Jul 30.5 °C 37 % 44 km/h 0.0 mm High 30
5 Jul 29.5 °C 40 % 47 km/h 0.0 mm High 32
6 Jul 28.7 °C 41 % 46 km/h 0.0 mm High 33
7 Jul 28.9 °C 38 % 45 km/h 0.0 mm High 32
8 Jul 28.7 °C 52 % 42 km/h 1.6 mm Moderate 14
9 Jul 30.7 °C 36 % 39 km/h 0.0 mm High 26
10 Jul 29.9 °C 36 % 45 km/h 0.0 mm High 31
11 Jul 29.6 °C 30 % 44 km/h 0.0 mm High 34
12 Jul 29.6 °C 32 % 42 km/h 0.0 mm High 34
13 Jul 29.7 °C 37 % 35 km/h 0.0 mm High 33
14 Jul 29.4 °C 36 % 44 km/h 0.0 mm High 35
15 Jul after 27.4 °C 42 % 48 km/h 0.0 mm High 34
16 Jul after 28.6 °C 35 % 49 km/h 0.0 mm High 35
17 Jul after 27.2 °C 31 % 48 km/h 0.0 mm High 36
18 Jul after 27.5 °C 30 % 47 km/h 0.0 mm High 36
19 Jul after 28.0 °C 27 % 44 km/h 0.0 mm High 36
20 Jul after 28.4 °C 25 % 40 km/h 0.0 mm High 37

Before and after, from space

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

Before · 5 Jun 2026
After · 21 Jul 2026

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 June 2026 the air beside the fire reached 22 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak22 µg/m³
Days over the guideline0 days
PM1024 µg/m³
Optical depth0.36
12 Jun19 Jun26 Jun3 Jul10 Jul
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 · 239Every 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 12 June 2026 to 14 July 2026 (33 days). The perimeter dates it from 14 June 2026 to 7 July 2026.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 9,034 hectares (90.3 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Roper Gulf (7,031 ha, 0.0 %); West Arnhem (1,997 ha, 0.0 %).
What was the weather like?
During the fire the temperature reached 31.3 °C, humidity dropped to 36 % and gusts hit 49 km/h. The fire danger index (FWI) reached 33, class High.
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: 7 July 2026 → 10 July 2026.
  2. Start date: 14 June 2026 → 12 June 2026.

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 14 June 2026 to 7 July 2026. 239 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 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.