West Arnhem fire, 9 June 2025 West Arnhem
The fire started on 9 June 2025 in West Arnhem, Australia, and satellites saw it burning for 23 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 6,659 hectares from heat detections, spread across a single municipality.
It is the 2435th largest in Northern Territory since 2016 (of 3514 with a page). Number 786 in Australia in 2025, of 1124.
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- Burnt area
- 6,659ha
- GWIS perimeter (Copernicus)
- Duration
- 23days
- 9 Jun 2025 – 1 Jul 2025
- Municipalities hit
- 1
- local government areas
- Started on
- 9 Jun
- 2025
- Heat detections
- 275
- in a single hotspot: 59 MW
- Danger at start
- 15
- Moderate · FWI index
- Average daily power
- 114MW
- detected power per day, on average
Where it burned
How it evolved, day by day
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
It had gone 10 days without rain (1 mm or more) when it started.
This area had burned before
100% of the perimeter overlaps earlier fires recorded since 2016: 3,730 ha in 2016, 1,916 ha in 2017, 5,462 ha in 2018, 5,715 ha in 2019, 2,553 ha in 2020, 3,304 ha in 2021, 1,960 ha in 2022, 6,415 ha in 2023, 871 ha in 2024. Part of it burned more than once, so the yearly figures add up to more than the 6,699 ha that had burned before.
- 4,744 ha West Arnhem fire, June 2018 34,526 ha in total; the hectares shown are those it shares with this fire
- 3,634 ha West Arnhem fire, July 2016 20,623 ha in total; the hectares shown are those it shares with this fire
- 3,090 ha West Arnhem fire, August 2019 16,787 ha in total; the hectares shown are those it shares with this fire
- 2,625 ha West Arnhem fire, July 2019 8,697 ha in total; the hectares shown are those it shares with this fire
- 1,355 ha West Arnhem fire, June 2020 21,073 ha in total; the hectares shown are those it shares with this fire
- 781 ha West Arnhem fire, July 2023 11,286 ha in total; the hectares shown are those it shares with this fire
- 200 ha West Arnhem fire, September 2023 14,248 ha in total; the hectares shown are those it shares with this fire
- 96 ha West Arnhem fire, June 2016 5,014 ha in total; the hectares shown are those it shares with this fire
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
Paris boundary: geoBoundaries · Institut national de l'information géographique et forestière (IGN-F) (Etalab Open License 2.0).
Madrid boundary: geoBoundaries · Open Data ESRI, IGN Central Registry of Cartography Area (CC BY 4.0).
Berlin boundary: geoBoundaries · Federal Agency for Cartography and Geodesy (dl-de/by-2-0).
This compares size, not location: both shapes are at the same scale, north up, centred on each other.
What happened to each town
-
West Arnhem where it started6,676 ha reached on 9 Jun0.1 %
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 2025Inside 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) |
|---|---|---|---|---|---|
| 9 Jun | 26.7 °C | 54 % | 41 km/h | 0.0 mm | Moderate 15 |
| 10 Jun | 25.6 °C | 55 % | 41 km/h | 0.0 mm | Moderate 16 |
| 11 Jun | 26.3 °C | 56 % | 38 km/h | 0.0 mm | Moderate 15 |
| 12 Jun | 26.4 °C | 50 % | 43 km/h | 0.0 mm | Moderate 17 |
| 13 Jun | 26.6 °C | 48 % | 39 km/h | 0.0 mm | Moderate 17 |
| 14 Jun | 25.8 °C | 43 % | 39 km/h | 0.0 mm | Moderate 19 |
| 15 Jun | 25.7 °C | 44 % | 30 km/h | 0.0 mm | Moderate 16 |
| 16 Jun | 26.0 °C | 67 % | 27 km/h | 0.0 mm | Moderate 11 |
| 17 Jun | 26.9 °C | 50 % | 36 km/h | 0.0 mm | Moderate 17 |
| 18 Jun | 26.7 °C | 70 % | 38 km/h | 0.0 mm | Moderate 14 |
| 19 Jun | 26.6 °C | 62 % | 40 km/h | 0.0 mm | Moderate 15 |
| 20 Jun | 26.7 °C | 65 % | 35 km/h | 0.0 mm | Moderate 14 |
| 21 Jun | 26.9 °C | 68 % | 37 km/h | 0.0 mm | Moderate 15 |
| 22 Jun | 26.1 °C | 62 % | 36 km/h | 0.0 mm | Moderate 15 |
| 23 Jun | 26.3 °C | 66 % | 26 km/h | 0.0 mm | Moderate 12 |
| 24 Jun | 26.8 °C | 67 % | 25 km/h | 0.0 mm | Moderate 12 |
| 25 Jun | 27.0 °C | 63 % | 31 km/h | 0.0 mm | Moderate 14 |
| 26 Jun | 27.4 °C | 49 % | 46 km/h | 0.1 mm | High 23 |
| 27 Jun | 26.9 °C | 52 % | 42 km/h | 0.0 mm | High 22 |
| 28 Jun | 26.8 °C | 46 % | 41 km/h | 0.0 mm | High 22 |
| 29 Jun | 26.7 °C | 47 % | 44 km/h | 0.0 mm | High 24 |
| 30 Jun | 26.5 °C | 56 % | 45 km/h | 0.0 mm | High 25 |
| 1 Jul | 26.1 °C | 52 % | 44 km/h | 0.0 mm | High 25 |
| 2 Jul after | 25.5 °C | 56 % | 41 km/h | 0.0 mm | High 24 |
| 3 Jul after | 25.3 °C | 51 % | 33 km/h | 0.0 mm | Moderate 20 |
| 4 Jul after | 24.7 °C | 70 % | 29 km/h | 0.0 mm | Moderate 14 |
| 5 Jul after | 24.9 °C | 73 % | 22 km/h | 0.0 mm | Low 10 |
| 6 Jul after | 25.8 °C | 67 % | 27 km/h | 0.0 mm | Moderate 12 |
| 7 Jul after | 26.7 °C | 60 % | 34 km/h | 0.0 mm | Moderate 17 |
| 8 Jul after | 26.3 °C | 65 % | 31 km/h | 0.0 mm | Moderate 16 |
| 9 Jul after | 26.2 °C | 66 % | 23 km/h | 0.0 mm | Moderate 13 |
| 10 Jul after | 26.5 °C | 62 % | 22 km/h | 0.0 mm | Moderate 14 |
| 11 Jul after | 26.8 °C | 47 % | 38 km/h | 0.0 mm | High 24 |
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
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 · CopernicusOn 15 June 2025 the air beside the fire reached 32 µg/m³ of PM2.5. That day averaged 23: 1.6 times the WHO daily guideline (15).
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 · 275Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 39,113 haWest Arnhem3 June 2026 · 25 days · 2 km away
- 34,526 haWest Arnhem5 June 2018 · 40 days · 3 km away
- 20,623 haWest Arnhem5 July 2016 · 7 days · 6 km away
- 21,073 haWest Arnhem26 June 2020 · 39 days · 12 km away
- 21,079 haWest Arnhem9 September 2019 · 17 days · 38 km away
- 44,036 haWest Arnhem1 September 2017 · 31 days · 39 km away
Frequently asked questions
- How long did the West Arnhem fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 9 June 2025 to 1 July 2025 (23 days). The perimeter dates it from 9 June 2025 to 25 June 2025.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 6,659 hectares (66.6 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered West Arnhem (6,676 ha, 0.1 %).
- What was the weather like?
- During the fire the temperature reached 27.4 °C, humidity dropped to 43 % and gusts hit 46 km/h. The fire danger index (FWI) reached 25, 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 · 1 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
- Last day with fire: 25 June 2025 → 1 July 2025.
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
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 9 June 2025 to 25 June 2025. 275 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.
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.