MacDonnell fire, 28 September 2025 MacDonnell
The fire started on 28 September 2025 in MacDonnell, Australia, and satellites saw it burning for 2 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 8,712 hectares from heat detections, spread across a single municipality.
It is the 1725th largest in Northern Territory since 2016 (of 3496 with a page). Number 576 in Australia in 2025, of 1124.
Compare with…
- Burnt area
- 8,712ha
- GWIS perimeter (Copernicus)
- Duration
- 2days
- 28 Sept 2025 – 29 Sept 2025
- Municipalities hit
- 1
- local government areas
- Started on
- 28 Sept
- 2025
- Heat detections
- 136
- in a single hotspot: 191 MW
- Danger at start
- 58
- Extreme · FWI index
- Average daily power
- 2.3GW
- 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 more than two months without rain (1 mm or more) when it started. Rain came after the fire: 1.9 mm on 11 Oct.
This area had burned before
66% of the perimeter overlaps earlier fires recorded since 2016: 834 ha in 2021, 3,099 ha in 2022, 3,152 ha in 2023. Part of it burned more than once, so the yearly figures add up to more than the 5,756 ha that had burned before.
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
-
MacDonnell where it started8,684 ha reached on 27 Sept0.0 %
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.
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) |
|---|---|---|---|---|---|
| 27 Sept | 33.4 °C | 5 % | 33 km/h | 0.0 mm | Extreme 58 |
| 28 Sept | 34.2 °C | 7 % | 42 km/h | 0.0 mm | Extreme 65 |
| 29 Sept | 35.5 °C | 4 % | 48 km/h | 0.0 mm | Very extreme 73 |
| 30 Sept after | 32.6 °C | 12 % | 43 km/h | 0.0 mm | Extreme 64 |
| 1 Oct after | 33.2 °C | 11 % | 34 km/h | 0.0 mm | Extreme 58 |
| 2 Oct after | 34.1 °C | 11 % | 32 km/h | 0.0 mm | Extreme 58 |
| 3 Oct after | 31.7 °C | 15 % | 50 km/h | 0.1 mm | Extreme 70 |
| 4 Oct after | 34.6 °C | 12 % | 35 km/h | 0.0 mm | Extreme 57 |
| 5 Oct after | 36.2 °C | 7 % | 34 km/h | 0.0 mm | Extreme 61 |
| 6 Oct after | 37.6 °C | 4 % | 30 km/h | 0.0 mm | Extreme 61 |
| 7 Oct after | 38.8 °C | 6 % | 40 km/h | 0.0 mm | Very extreme 70 |
| 8 Oct after | 39.9 °C | 12 % | 48 km/h | 0.0 mm | Very extreme 85 |
| 9 Oct after | 37.5 °C | 17 % | 45 km/h | 0.0 mm | Extreme 69 |
| 10 Oct after | 36.2 °C | 19 % | 37 km/h | 0.4 mm | Extreme 64 |
| 11 Oct after | 36.4 °C | 21 % | 34 km/h | 1.9 mm | Very high 39 |
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 29 September 2025 the air beside the fire reached 13 µg/m³ of PM2.5, but no daily average passed the WHO 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 · 136Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 8,778 haMacDonnell25 September 2025 · 5 days · 13 km away
- 8,693 haMacDonnell26 October 2023 · 4 days · 17 km away
- 7,138 haMacDonnell16 April 2022 · 4 days · 28 km away
- 7,367 haMacDonnell8 September 2021 · 6 days · 29 km away
- 7,117 haMacDonnell14 September 2017 · 5 days · 30 km away
- 7,891 haMacDonnell21 April 2022 · 4 days · 38 km away
Frequently asked questions
- How long did the MacDonnell fire last?
- GWIS (Copernicus) dates it between 28 September 2025 and 29 September 2025: 2 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 8,712 hectares (87.1 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered MacDonnell (8,684 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 35.5 °C, humidity dropped to 4 % and gusts hit 48 km/h. The fire danger index (FWI) reached 73, 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.
No changes 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
How we know this
- Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery.
- Dates from the perimeter: the VIIRS detections inside it did not change them. 136 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.
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.