Barkly fire, 19 September 2025 Barkly
The fire started on 19 September 2025 in Barkly, Australia, and satellites saw it burning for 10 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 10,177 hectares from heat detections, spread across a single municipality.
It is the 1423th largest in Northern Territory since 2016 (of 3493 with a page). Number 482 in Australia in 2025, of 1124.
- Burnt area
- 10,177ha
- GWIS perimeter (Copernicus)
- Duration
- 10days
- 19 Sept 2025 – 28 Sept 2025
- Municipalities hit
- 1
- local government areas
- Started on
- 19 Sept
- 2025
- Heat detections
- 266
- in a single hotspot: 86 MW
- Danger at start
- 48
- Very high · FWI index
- Energy released
- 3.4GW
- sum of detected power
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 4 days without rain (1 mm or more) when it started.
This area had burned before
21% of the perimeter overlaps earlier fires recorded since 2016: 2,177 ha in 2017.
What happened to each town
-
Barkly where it started10,112 ha reached on 17 Sept0.0 %
Burnt area inside each municipality, from crossing the GWIS perimeter with administrative boundaries. The distance is from the town centre 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) |
|---|---|---|---|---|---|
| 17 Sept | 35.8 °C | 19 % | 38 km/h | 0.0 mm | Very high 48 |
| 18 Sept | 38.6 °C | 17 % | 41 km/h | 0.0 mm | Extreme 55 |
| 19 Sept | 37.6 °C | 22 % | 28 km/h | 0.0 mm | Very high 45 |
| 20 Sept | 36.2 °C | 29 % | 45 km/h | 0.2 mm | Extreme 53 |
| 21 Sept | 29.7 °C | 36 % | 45 km/h | 0.1 mm | Very high 44 |
| 22 Sept | 30.7 °C | 14 % | 48 km/h | 0.0 mm | Extreme 54 |
| 23 Sept | 30.8 °C | 15 % | 57 km/h | 0.0 mm | Extreme 66 |
| 24 Sept | 31.7 °C | 17 % | 57 km/h | 0.0 mm | Extreme 66 |
| 25 Sept | 33.2 °C | 12 % | 45 km/h | 0.0 mm | Extreme 60 |
| 26 Sept | 34.5 °C | 17 % | 31 km/h | 0.0 mm | Very high 48 |
| 27 Sept | 36.4 °C | 14 % | 32 km/h | 0.0 mm | Very high 49 |
| 28 Sept | 36.6 °C | 18 % | 31 km/h | 0.0 mm | Extreme 52 |
| 29 Sept after | 38.3 °C | 15 % | 34 km/h | 0.0 mm | Very high 49 |
| 30 Sept after | 38.7 °C | 17 % | 43 km/h | 0.0 mm | Extreme 58 |
| 1 Oct after | 38.2 °C | 20 % | 32 km/h | 0.0 mm | Extreme 54 |
| 2 Oct after | 37.3 °C | 22 % | 30 km/h | 0.0 mm | Extreme 50 |
| 3 Oct after | 38.3 °C | 12 % | 47 km/h | 0.0 mm | Extreme 67 |
| 4 Oct after | 36.4 °C | 7 % | 52 km/h | 0.0 mm | Very extreme 73 |
| 5 Oct after | 38.0 °C | 6 % | 39 km/h | 0.0 mm | Extreme 65 |
| 6 Oct after | 37.8 °C | 17 % | 31 km/h | 0.0 mm | Extreme 54 |
| 7 Oct after | 37.6 °C | 19 % | 38 km/h | 0.0 mm | Extreme 58 |
| 8 Oct after | 38.8 °C | 17 % | 40 km/h | 0.0 mm | Extreme 60 |
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 27 September 2025 the air beside the fire reached 19 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 · 266Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
Frequently asked questions
- How long did the Barkly fire last?
- GWIS (Copernicus) dates it between 19 September 2025 and 28 September 2025: 10 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 10,177 hectares (101.8 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Barkly (10,112 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 38.6 °C, humidity dropped to 12 % and gusts hit 57 km/h. The fire danger index (FWI) reached 66, class 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
Satellite cross-check
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
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.