West Daly fire, 18 July 2026 West Daly
The fire started on 18 July 2026 in West Daly, Australia, and satellites saw it burning for 23 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 10,761 hectares from heat detections, spread across a single municipality.
It is the 1343th largest in Northern Territory since 2016 (of 3508 with a page). Number 313 in Australia in 2026, of 886.
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- Burnt area
- 10,761ha
- GWIS perimeter (Copernicus)
- Duration
- 23days
- 18 Jul 2026 – 9 Aug 2026
- Municipalities hit
- 1
- local government areas
- Started on
- 18 Jul
- 2026
- Heat detections
- 262
- in a single hotspot: 43 MW
- Danger at start
- 42
- Very high · FWI index
- Average daily power
- 58MW
- 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
100% of the perimeter overlaps earlier fires recorded since 2016: 7,190 ha in 2016, 6,779 ha in 2017, 7,700 ha in 2018, 5,154 ha in 2019, 2,603 ha in 2020, 4,757 ha in 2021, 6,373 ha in 2022, 4,738 ha in 2023, 3,595 ha in 2024, 5,570 ha in 2025. Part of it burned more than once, so the yearly figures add up to more than the 10,780 ha that had burned before.
- 5,154 ha West Daly fire, May 2019 22,161 ha in total; the hectares shown are those it shares with this fire
- 3,731 ha West Daly fire, June 2016 81,588 ha in total; the hectares shown are those it shares with this fire
- 3,406 ha West Daly fire, July 2018 9,452 ha in total; the hectares shown are those it shares with this fire
- 2,724 ha West Daly fire, September 2017 17,725 ha in total; the hectares shown are those it shares with this fire
- 2,674 ha West Daly fire, May 2025 6,724 ha in total; the hectares shown are those it shares with this fire
- 2,028 ha West Daly fire, May 2017 8,352 ha in total; the hectares shown are those it shares with this fire
- 1,947 ha West Daly fire, June 2017 5,269 ha in total; the hectares shown are those it shares with this fire
- 1,555 ha West Daly fire, August 2018 8,213 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 started10,839 ha reached on 18 Jul0.8 %
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) |
|---|---|---|---|---|---|
| 18 Jul | 28.3 °C | 19 % | 44 km/h | 0.0 mm | Very high 42 |
| 19 Jul | 28.6 °C | 18 % | 43 km/h | 0.0 mm | Very high 43 |
| 20 Jul | 29.3 °C | 20 % | 44 km/h | 0.0 mm | Very high 44 |
| 21 Jul | 29.4 °C | 25 % | 36 km/h | 0.0 mm | Very high 39 |
| 22 Jul | 30.8 °C | 16 % | 37 km/h | 0.0 mm | Very high 43 |
| 23 Jul | 31.3 °C | 24 % | 42 km/h | 0.0 mm | Very high 48 |
| 24 Jul | 30.5 °C | 28 % | 49 km/h | 0.0 mm | Very high 49 |
| 25 Jul | 29.1 °C | 23 % | 51 km/h | 0.0 mm | Very high 49 |
| 26 Jul | 27.9 °C | 26 % | 44 km/h | 0.0 mm | Very high 44 |
| 27 Jul | 28.2 °C | 20 % | 40 km/h | 0.0 mm | Very high 43 |
| 28 Jul | 28.2 °C | 16 % | 36 km/h | 0.0 mm | Very high 43 |
| 29 Jul | 29.3 °C | 18 % | 37 km/h | 0.0 mm | Very high 42 |
| 30 Jul | 30.9 °C | 30 % | 36 km/h | 0.0 mm | Very high 40 |
| 31 Jul | 31.8 °C | 28 % | 41 km/h | 0.0 mm | Very high 43 |
| 1 Aug | 31.5 °C | 25 % | 43 km/h | 0.0 mm | Very high 42 |
| 2 Aug | 31.2 °C | 21 % | 38 km/h | 0.0 mm | Very high 41 |
| 3 Aug | 32.4 °C | 27 % | 34 km/h | 0.0 mm | Very high 40 |
| 4 Aug | 31.9 °C | 32 % | 28 km/h | 0.0 mm | High 36 |
| 5 Aug | 32.4 °C | 26 % | 42 km/h | 0.0 mm | Very high 42 |
| 6 Aug | 32.5 °C | 28 % | 31 km/h | 0.0 mm | High 37 |
| 7 Aug | 32.8 °C | 25 % | 27 km/h | 0.0 mm | High 36 |
| 8 Aug | 33.2 °C | 30 % | 31 km/h | 0.0 mm | Very high 40 |
| 9 Aug | 32.7 °C | 33 % | 28 km/h | 0.0 mm | High 35 |
| 10 Aug after | 32.6 °C | 33 % | 20 km/h | 0.0 mm | High 35 |
| 11 Aug after | 32.7 °C | 36 % | 29 km/h | 0.0 mm | High 36 |
| 12 Aug after | 32.7 °C | 35 % | 25 km/h | 0.0 mm | High 33 |
| 13 Aug after | 33.7 °C | 33 % | 35 km/h | 0.0 mm | High 35 |
| 14 Aug after | 34.5 °C | 25 % | 36 km/h | 0.0 mm | Very high 40 |
| 15 Aug after | 34.9 °C | 23 % | 36 km/h | 0.0 mm | Very high 41 |
| 16 Aug after | 33.5 °C | 33 % | 26 km/h | 0.0 mm | High 37 |
| 17 Aug after | 34.2 °C | 30 % | 25 km/h | 0.0 mm | High 37 |
| 18 Aug after | 33.9 °C | 30 % | 27 km/h | 0.0 mm | Very high 38 |
| 19 Aug after | 34.4 °C | 22 % | 38 km/h | 0.0 mm | Very high 38 |
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 2 August 2026 the air beside the fire reached 20 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 · 262Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 22,161 haWest Daly25 May 2019 · 15 days · 6 km away
- 128,854 haWest Daly10 July 2021 · 74 days · 11 km away
- 81,588 haWest Daly21 June 2016 · 21 days · 18 km away
- 35,586 haWest Daly6 May 2018 · 33 days · 21 km away
- 19,358 haWest Daly5 May 2026 · 12 days · 26 km away
- 17,795 haWest Daly9 June 2020 · 19 days · 29 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 18 July 2026 to 9 August 2026 (23 days). The perimeter dates it from 19 July 2026 to 8 August 2026.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 10,761 hectares (107.6 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered West Daly (10,839 ha, 0.8 %).
- What was the weather like?
- During the fire the temperature reached 33.2 °C, humidity dropped to 16 % and gusts hit 51 km/h. The fire danger index (FWI) reached 49, 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 · 2 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
- Last day with fire: 8 August 2026 → 9 August 2026.
- Start date: 19 July 2026 → 18 July 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 adjusted with the VIIRS detections inside the perimeter, which said 19 July 2026 to 8 August 2026. 262 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.