MacDonnell fire, 21 December 2023 MacDonnell
The fire started on 21 December 2023 in MacDonnell, Australia, and satellites saw it burning for 3 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 7,838 hectares from heat detections, spread across a single municipality.
It is the 1979th largest in Northern Territory since 2016 (of 3496 with a page). Number 747 in Australia in 2023, of 1235.
- Burnt area
- 7,838ha
- GWIS perimeter (Copernicus)
- Duration
- 3days
- 21 Dec 2023 – 23 Dec 2023
- Municipalities hit
- 1
- local government areas
- Started on
- 21 Dec
- 2023
- Heat detections
- 307
- in a single hotspot: 197 MW
- Danger at start
- 51
- Extreme · FWI index
- Energy released
- 2.8GW
- 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 10 days without rain (1 mm or more) when it started.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
What happened to each town
-
MacDonnell where it started7,848 ha reached on 21 Dec0.0 %
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) |
|---|---|---|---|---|---|
| 21 Dec | 35.4 °C | 12 % | 40 km/h | 0.0 mm | Extreme 51 |
| 22 Dec | 37.4 °C | 8 % | 37 km/h | 0.0 mm | Extreme 54 |
| 23 Dec | 42.2 °C | 8 % | 55 km/h | 0.0 mm | Very extreme 78 |
| 24 Dec after | 37.2 °C | 15 % | 52 km/h | 0.0 mm | Extreme 63 |
| 25 Dec after | 34.8 °C | 14 % | 36 km/h | 0.0 mm | Extreme 54 |
| 26 Dec after | 36.6 °C | 10 % | 31 km/h | 0.0 mm | Extreme 53 |
| 27 Dec after | 40.5 °C | 9 % | 37 km/h | 0.0 mm | Extreme 58 |
| 28 Dec after | 43.1 °C | 8 % | 38 km/h | 0.0 mm | Extreme 62 |
| 29 Dec after | 42.6 °C | 9 % | 37 km/h | 0.0 mm | Extreme 57 |
| 30 Dec after | 39.0 °C | 15 % | 49 km/h | 0.0 mm | Extreme 66 |
| 31 Dec after | 36.3 °C | 7 % | 39 km/h | 0.0 mm | Extreme 59 |
| 1 Jan after | 36.8 °C | 10 % | 35 km/h | 0.0 mm | Extreme 54 |
| 2 Jan after | 41.2 °C | 10 % | 31 km/h | 0.0 mm | Extreme 58 |
| 3 Jan after | 40.5 °C | 14 % | 36 km/h | 0.0 mm | Extreme 59 |
| 4 Jan after | 37.9 °C | 20 % | 39 km/h | 0.3 mm | Extreme 68 |
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 23 December 2023 the air beside the fire reached 28 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 · 307Every 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 MacDonnell fire last?
- GWIS (Copernicus) dates it between 21 December 2023 and 23 December 2023: 3 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 7,838 hectares (78.4 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered MacDonnell (7,848 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 42.2 °C, humidity dropped to 8 % and gusts hit 55 km/h. The fire danger index (FWI) reached 78, 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
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.