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AU · Australia · –

Roper Gulf fire, 15 July 2026 Roper Gulf

Out · last detection 12 Aug 2026, 05:33 UTC

The fire started on 15 July 2026 in Roper Gulf, Australia, and satellites saw it burning for 29 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 15,751 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.

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
15,751ha
GWIS perimeter (Copernicus)
Duration
29days
15 Jul 2026 – 12 Aug 2026
Municipalities hit
1
local government areas
Started on
15 Jul
2026
Heat detections
587
in a single hotspot: 90 MW
Danger at start
39
Very high · FWI index
Average daily power
275MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 15 Jul12 Aug
12 Aug 2026

How it evolved, day by day

15 Jul 2026 · 216 MW · 29 16 Jul 2026 · 40 MW · 5 17 Jul 2026 · 11 MW · 2 18 Jul 2026 · 136 MW · 8 19 Jul 2026 · 460 MW · 35 20 Jul 2026 · 358 MW · 32 21 Jul 2026 · 409 MW · 42 22 Jul 2026 · 202 MW · 25 24 Jul 2026 · 1,162 MW · 69 25 Jul 2026 · 605 MW · 49 26 Jul 2026 · 186 MW · 11 27 Jul 2026 · 96 MW · 16 28 Jul 2026 · 342 MW · 43 29 Jul 2026 · 1,891 MW · 167 31 Jul 2026 · 148 MW · 9 1 Aug 2026 · 11 MW · 3 4 Aug 2026 · 23 MW · 1 5 Aug 2026 · 66 MW · 6 6 Aug 2026 · 29 MW · 4 7 Aug 2026 · 79 MW · 10 8 Aug 2026 · 8 MW · 3 9 Aug 2026 · 71 MW · 8 10 Aug 2026 · 34 MW · 6 12 Aug 2026 · 26 MW · 4
15 Jul 20 Jul 29 Jul 8 Aug

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

Fire front film How it spread from one satellite pass to the next (34 passes) and with what wind. Watch the film

The weather it burned in

35°high
57km/h · peak gust
23%lowest humidity

It had gone 6 days without rain (1 mm or more) when it started.

This area had burned before

83% of the perimeter overlaps earlier fires recorded since 2016: 2,346 ha in 2016, 1,587 ha in 2017, 2,920 ha in 2018, 5,181 ha in 2019, 1,329 ha in 2020, 523 ha in 2021, 2,352 ha in 2022, 1,423 ha in 2023, 4,536 ha in 2024, 828 ha in 2025. Part of it burned more than once, so the yearly figures add up to more than the 13,034 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 9.9% of the area of London (158 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
    15,914 ha reached on 15 Jul
    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 Strong wind: 39 % of the area in Australia

Day High Min. humidity Peak gust Rain Danger (FWI)
15 Jul 26.7 °C 51 % 53 km/h 0.0 mm Very high 39
16 Jul 27.3 °C 46 % 56 km/h 0.4 mm Very high 43
17 Jul 26.0 °C 40 % 48 km/h 0.0 mm High 38
18 Jul 26.8 °C 37 % 47 km/h 0.0 mm Very high 39
19 Jul 27.6 °C 33 % 44 km/h 0.0 mm Very high 41
20 Jul 28.2 °C 35 % 43 km/h 0.0 mm Very high 40
21 Jul 28.7 °C 29 % 32 km/h 0.0 mm High 34
22 Jul 29.7 °C 29 % 37 km/h 0.0 mm Very high 39
23 Jul 28.1 °C 52 % 44 km/h 2.8 mm Very high 39
24 Jul 27.6 °C 41 % 57 km/h 0.1 mm High 31
25 Jul 25.7 °C 40 % 49 km/h 0.0 mm Very high 38
26 Jul 25.9 °C 45 % 51 km/h 0.0 mm Very high 39
27 Jul 25.0 °C 38 % 43 km/h 0.0 mm High 37
28 Jul 27.3 °C 23 % 39 km/h 0.0 mm Very high 43
29 Jul 27.4 °C 40 % 42 km/h 0.0 mm Very high 41
30 Jul 27.2 °C 52 % 46 km/h 0.7 mm High 30
31 Jul 27.6 °C 42 % 48 km/h 0.0 mm Very high 41
1 Aug 29.8 °C 34 % 52 km/h 0.0 mm Very high 48
2 Aug 28.9 °C 33 % 43 km/h 0.0 mm Very high 44
3 Aug 29.3 °C 47 % 42 km/h 0.2 mm Very high 41
4 Aug 29.7 °C 36 % 49 km/h 0.0 mm Very high 47
5 Aug 29.7 °C 35 % 47 km/h 0.0 mm Very high 44
6 Aug 29.9 °C 34 % 39 km/h 0.0 mm Very high 43
7 Aug 29.7 °C 37 % 39 km/h 0.0 mm Very high 40
8 Aug 30.8 °C 36 % 36 km/h 0.0 mm Very high 40
9 Aug 33.8 °C 28 % 25 km/h 0.0 mm High 34
10 Aug 35.0 °C 30 % 38 km/h 0.0 mm High 28
11 Aug 32.1 °C 37 % 29 km/h 0.0 mm High 34
12 Aug 33.5 °C 30 % 35 km/h 0.0 mm High 35
13 Aug after 29.5 °C 42 % 47 km/h 0.0 mm Very high 49
14 Aug after 30.3 °C 36 % 48 km/h 0.0 mm Very high 49
15 Aug after 31.0 °C 39 % 41 km/h 0.0 mm Very high 42
16 Aug after 30.2 °C 39 % 45 km/h 0.0 mm Very high 45
17 Aug after 30.1 °C 42 % 45 km/h 0.1 mm Very high 48
18 Aug after 29.0 °C 47 % 44 km/h 0.4 mm Very high 44
19 Aug after 31.6 °C 27 % 52 km/h 0.0 mm Extreme 58
20 Aug after 31.2 °C 32 % 45 km/h 0.0 mm Extreme 53
21 Aug after 30.9 °C 36 % 44 km/h 0.0 mm Extreme 51
22 Aug after 31.7 °C 34 % 40 km/h 0.0 mm Very high 45

Before and after, from space

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

Before · 8 Jul 2026
After · 19 Aug 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 30 July 2026 the air beside the fire reached 58 µg/m³ of PM2.5. That day averaged 38: 2.5 times the WHO daily guideline (15).

PM2.5 peak58 µg/m³
Days over the guideline5 days
PM1062 µg/m³
Optical depth0.49
15 Jul22 Jul29 Jul5 Aug12 Aug
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 · 587Every 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 15 July 2026 to 12 August 2026 (29 days). The perimeter dates it from 19 July 2026 to 6 August 2026.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 15,751 hectares (157.5 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Roper Gulf (15,914 ha, 0.1 %).
What was the weather like?
During the fire the temperature reached 35.0 °C, humidity dropped to 23 % and gusts hit 57 km/h. The fire danger index (FWI) reached 48, class Very 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 · 3 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
  1. Start date: 17 July 2026 → 15 July 2026.
  2. Last day with fire: 6 August 2026 → 12 August 2026.
  3. Start date: 19 July 2026 → 17 July 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; 2 polygons grouped in this page.
  • Dates adjusted with the VIIRS detections inside the perimeter, which said 19 July 2026 to 6 August 2026. 587 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.