Cook fire, 17 August 2023 Cook
The fire started on 17 August 2023 in Cook, Australia, and satellites saw it burning for 6 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 5,652 hectares from heat detections, spread across a single municipality.
It is the 1494th largest in Queensland since 2016 (of 1737 with a page). Number 1086 in Australia in 2023, of 1235.
Compare with…
Suggestions: Cook · 2019Cook · 2018Cook · 2018Cook · 2021
- Burnt area
- 5,652ha
- GWIS perimeter (Copernicus)
- Duration
- 6days
- 17 Aug 2023 – 22 Aug 2023
- Municipalities hit
- 1
- local government areas
- Started on
- 17 Aug
- 2023
- Heat detections
- 213
- in a single hotspot: 251 MW
- Danger at start
- 47
- Very high · FWI index
- Average daily power
- 199MW
- 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 43 days without rain (1 mm or more) when it started.
This area had burned before
99% of the perimeter overlaps earlier fires recorded since 2016: 660 ha in 2016, 4,339 ha in 2017, 277 ha in 2018, 3,638 ha in 2019, 1,103 ha in 2020, 2,174 ha in 2021, 344 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 5,590 ha that had burned before.
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
-
Cook where it started5,745 ha reached on 16 Aug0.0 %
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.
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 Aug | 31.9 °C | 21 % | 31 km/h | 0.0 mm | Very high 47 |
| 18 Aug | 32.2 °C | 19 % | 26 km/h | 0.0 mm | Very high 45 |
| 19 Aug | 31.7 °C | 28 % | 34 km/h | 0.0 mm | Very high 39 |
| 20 Aug | 30.3 °C | 26 % | 38 km/h | 0.0 mm | Very high 42 |
| 21 Aug | 29.2 °C | 34 % | 45 km/h | 0.0 mm | Very high 40 |
| 22 Aug | 31.4 °C | 27 % | 36 km/h | 0.0 mm | High 38 |
| 23 Aug after | 30.9 °C | 31 % | 41 km/h | 0.0 mm | Very high 40 |
| 24 Aug after | 32.0 °C | 29 % | 40 km/h | 0.0 mm | Very high 40 |
| 25 Aug after | 30.0 °C | 33 % | 49 km/h | 0.0 mm | Very high 44 |
| 26 Aug after | 27.3 °C | 42 % | 52 km/h | 0.0 mm | High 38 |
| 27 Aug after | 30.4 °C | 31 % | 54 km/h | 0.0 mm | Very high 40 |
| 28 Aug after | 30.4 °C | 32 % | 48 km/h | 0.0 mm | Very high 39 |
| 29 Aug after | 31.7 °C | 24 % | 41 km/h | 0.0 mm | Very high 41 |
| 30 Aug after | 32.2 °C | 18 % | 32 km/h | 0.0 mm | Very high 41 |
| 31 Aug after | 31.7 °C | 18 % | 23 km/h | 0.0 mm | Very high 41 |
| 1 Sept after | 31.9 °C | 20 % | 28 km/h | 0.0 mm | Very high 42 |
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 18 August 2023 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 · 213Every 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 Cook fire last?
- GWIS (Copernicus) dates it between 17 August 2023 and 22 August 2023: 6 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 5,652 hectares (56.5 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Cook (5,745 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 32.2 °C, humidity dropped to 19 % and gusts hit 45 km/h. The fire danger index (FWI) reached 47, 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 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
No changes since 24 October 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 from the perimeter: the VIIRS detections inside it did not change them. 213 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.
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.