West Daly fire, August 2025 West Daly
The fire started on 3 August 2025 in West Daly, Australia, and satellites saw it burning for 10 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 5,211 hectares from heat detections, spread across a single municipality.
It is the 3321th largest in Northern Territory since 2016 (of 3511 with a page). Number 1070 in Australia in 2025, of 1124.
Compare with…
- Burnt area
- 5,211ha
- GWIS perimeter (Copernicus)
- Duration
- 10days
- 3 Aug 2025 – 12 Aug 2025
- Municipalities hit
- 1
- local government areas
- Started on
- 3 Aug
- 2025
- Heat detections
- 128
- in a single hotspot: 38 MW
- Danger at start
- 44
- Very high · FWI index
- Average daily power
- 113MW
- 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.
This area had burned before
97% of the perimeter overlaps earlier fires recorded since 2016: 3,099 ha in 2017, 5,136 ha in 2019, 227 ha in 2020, 3,206 ha in 2021, 1,515 ha in 2023, 1,466 ha in 2024. Part of it burned more than once, so the yearly figures add up to more than the 5,037 ha that had burned before.
- 3,153 ha West Daly fire, June 2019 9,272 ha in total; the hectares shown are those it shares with this fire
- 3,099 ha West Daly fire, June 2017 25,872 ha in total; the hectares shown are those it shares with this fire
- 2,451 ha West Daly fire, July 2021 15,521 ha in total; the hectares shown are those it shares with this fire
- 1,958 ha West Daly fire, November 2019 5,411 ha in total; the hectares shown are those it shares with this fire
- 386 ha West Daly fire, May 2023 14,611 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 Daly where it started5,228 ha reached on 3 Aug0.4 %
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) |
|---|---|---|---|---|---|
| 3 Aug | 29.0 °C | 23 % | 44 km/h | 0.0 mm | Very high 44 |
| 4 Aug | 29.8 °C | 23 % | 30 km/h | 0.0 mm | High 38 |
| 5 Aug | 30.5 °C | 19 % | 30 km/h | 0.0 mm | Very high 39 |
| 6 Aug | 31.1 °C | 20 % | 28 km/h | 0.0 mm | Very high 39 |
| 7 Aug | 30.5 °C | 38 % | 24 km/h | 0.0 mm | High 35 |
| 8 Aug | 30.7 °C | 48 % | 22 km/h | 0.0 mm | High 26 |
| 9 Aug | 31.8 °C | 32 % | 29 km/h | 0.0 mm | High 31 |
| 10 Aug | 31.1 °C | 26 % | 34 km/h | 0.0 mm | Very high 39 |
| 11 Aug | 30.7 °C | 19 % | 36 km/h | 0.0 mm | Very high 45 |
| 12 Aug | 30.4 °C | 26 % | 33 km/h | 0.0 mm | Very high 43 |
| 13 Aug after | 31.3 °C | 32 % | 35 km/h | 0.0 mm | Very high 42 |
| 14 Aug after | 31.4 °C | 31 % | 39 km/h | 0.0 mm | Very high 45 |
| 15 Aug after | 31.2 °C | 30 % | 34 km/h | 0.0 mm | Very high 40 |
| 16 Aug after | 31.2 °C | 25 % | 31 km/h | 0.0 mm | Very high 39 |
| 17 Aug after | 30.7 °C | 22 % | 42 km/h | 0.0 mm | Very high 46 |
| 18 Aug after | 29.7 °C | 24 % | 43 km/h | 0.0 mm | Very high 47 |
| 19 Aug after | 29.4 °C | 21 % | 43 km/h | 0.0 mm | Very high 47 |
| 20 Aug after | 29.7 °C | 24 % | 39 km/h | 0.0 mm | Very high 46 |
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 6 August 2025 the air beside the fire reached 27 µg/m³ of PM2.5. That day averaged 16: 1.1 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 · 128Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 15,521 haWest Daly19 July 2021 · 24 days · 8 km away
- 25,872 haWest Daly5 June 2017 · 16 days · 9 km away
- 17,414 haWest Daly13 May 2025 · 10 days · 9 km away
- 14,611 haWest DalyMay 2023 · 12 days · 11 km away
- 16,126 haWest Daly9 August 2018 · 10 days · 19 km away
- 25,324 haWest Daly23 June 2026 · 29 days · 38 km away
Frequently asked questions
- How long did the West Daly fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 3 August 2025 to 12 August 2025 (10 days). The perimeter dates it from 3 August 2025 to 10 August 2025.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 5,211 hectares (52.1 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered West Daly (5,228 ha, 0.4 %).
- What was the weather like?
- During the fire the temperature reached 31.8 °C, humidity dropped to 19 % and gusts hit 44 km/h. The fire danger index (FWI) reached 44, 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 · 1 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
- Last day with fire: 10 August 2025 → 12 August 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 3 August 2025 to 10 August 2025. 128 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.