Upper Hunter fire, November 2025 Upper Hunter, Muswellbrook, Mid-Western
The fire started on 27 November 2025 in Upper Hunter, Australia, and satellites saw it burning for 14 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 18,588 hectares from heat detections, spread across 3 municipalities.
It is the 42th largest in New South Wales since 2016 (of 130 with a page). Number 225 in Australia in 2025, of 1124.
- Burnt area
- 18,588ha
- GWIS perimeter (Copernicus)
- Duration
- 14days
- 27 Nov 2025 – 10 Dec 2025
- Municipalities hit
- 3
- local government areas
- Started on
- 27 Nov
- 2025
- Heat detections
- 1,666
- in a single hotspot: 598 MW
- Danger at start
- 30
- High · FWI index
- Energy released
- 16.6GW
- 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 0 days without rain (1 mm or more) when it started. Rain came after the fire: 7.0 mm on 11 Dec.
This area had burned before
11% of the perimeter overlaps earlier fires recorded since 2016: 1,984 ha in 2023, 30 ha in 2024.
What happened to each town
-
Upper Hunter where it started14,386 ha reached on 27 Nov1.8 %
-
3,935 ha reached on 30 Nov1.2 %
-
371 ha reached on 9 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) |
|---|---|---|---|---|---|
| 27 Nov | 31.3 °C | 18 % | 61 km/h | 0.0 mm | High 30 |
| 28 Nov | 31.9 °C | 19 % | 39 km/h | 0.0 mm | High 23 |
| 29 Nov | 29.8 °C | 32 % | 60 km/h | 1.9 mm | Moderate 18 |
| 30 Nov | 27.3 °C | 21 % | 63 km/h | 0.0 mm | High 29 |
| 1 Dec | 23.2 °C | 25 % | 62 km/h | 0.6 mm | High 26 |
| 2 Dec | 23.7 °C | 19 % | 45 km/h | 0.5 mm | High 24 |
| 3 Dec | 28.8 °C | 18 % | 23 km/h | 0.0 mm | Moderate 21 |
| 4 Dec | 33.2 °C | 13 % | 31 km/h | 0.0 mm | High 27 |
| 5 Dec | 36.5 °C | 10 % | 40 km/h | 0.0 mm | High 36 |
| 6 Dec | 38.5 °C | 16 % | 54 km/h | 0.0 mm | Very high 44 |
| 7 Dec | 27.7 °C | 35 % | 58 km/h | 0.0 mm | High 28 |
| 8 Dec | 33.3 °C | 19 % | 38 km/h | 0.0 mm | High 30 |
| 9 Dec | 37.2 °C | 3 % | 47 km/h | 0.0 mm | Extreme 53 |
| 10 Dec | 32.2 °C | 41 % | 40 km/h | 1.7 mm | Moderate 17 |
| 11 Dec after | 23.4 °C | 63 % | 49 km/h | 7.0 mm | Very low 3 |
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 December 2025 the air beside the fire reached 64 µg/m³ of PM2.5. That day averaged 29: 1.9 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 · 1,666Every 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 Upper Hunter fire last?
- GWIS (Copernicus) dates it between 27 November 2025 and 10 December 2025: 14 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 18,588 hectares (185.9 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 3 municipalities: Upper Hunter (14,386 ha, 1.8 %); Muswellbrook (3,935 ha, 1.2 %); Mid-Western (371 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 38.5 °C, humidity dropped to 3 % and gusts hit 63 km/h. The fire danger index (FWI) reached 53, 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.