Cook fire, 23 July 2021 Cook
The fire started on 23 July 2021 in Cook, Australia, and satellites saw it burning for 2 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 7,311 hectares from heat detections, spread across a single municipality.
It is the 1106th largest in Queensland since 2016 (of 1737 with a page). Number 270 in Australia in 2021, of 460.
- Burnt area
- 7,311ha
- GWIS perimeter (Copernicus)
- Duration
- 2days
- 23 Jul 2021 – 24 Jul 2021
- Municipalities hit
- 1
- local government areas
- Started on
- 23 Jul
- 2021
- Heat detections
- 157
- in a single hotspot: 56 MW
- Danger at start
- 26
- High · FWI index
- Energy released
- 2.4GW
- 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 more than two months without rain (1 mm or more) when it started.
This area had burned before
61% of the perimeter overlaps earlier fires recorded since 2016: 2,506 ha in 2017, 1,304 ha in 2018, 1,709 ha in 2019, 104 ha in 2020. Part of it burned more than once, so the yearly figures add up to more than the 4,485 ha that had burned before.
What happened to each town
-
Cook where it started7,338 ha reached on 23 Jul0.1 %
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) |
|---|---|---|---|---|---|
| 23 Jul | 30.3 °C | 45 % | 35 km/h | 0.0 mm | High 26 |
| 24 Jul | 32.7 °C | 37 % | 25 km/h | 0.0 mm | High 28 |
| 25 Jul after | 32.0 °C | 43 % | 31 km/h | 0.0 mm | High 31 |
| 26 Jul after | 31.2 °C | 46 % | 44 km/h | 0.0 mm | High 31 |
| 27 Jul after | 29.8 °C | 56 % | 48 km/h | 0.0 mm | High 30 |
| 28 Jul after | 29.7 °C | 53 % | 45 km/h | 0.0 mm | High 29 |
| 29 Jul after | 33.1 °C | 43 % | 36 km/h | 0.0 mm | High 28 |
| 30 Jul after | 32.2 °C | 47 % | 44 km/h | 0.0 mm | High 32 |
| 31 Jul after | 30.2 °C | 46 % | 48 km/h | 0.0 mm | High 32 |
| 1 Aug after | 31.2 °C | 41 % | 45 km/h | 0.0 mm | High 33 |
| 2 Aug after | 30.2 °C | 38 % | 44 km/h | 0.0 mm | High 33 |
| 3 Aug after | 31.5 °C | 40 % | 33 km/h | 0.0 mm | High 29 |
| 4 Aug after | 31.3 °C | 41 % | 34 km/h | 0.0 mm | High 29 |
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.
Detections table · 157Every 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 23 July 2021 and 24 July 2021: 2 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 7,311 hectares (73.1 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Cook (7,338 ha, 0.1 %).
- What was the weather like?
- During the fire the temperature reached 32.7 °C, humidity dropped to 37 % and gusts hit 35 km/h. The fire danger index (FWI) reached 31, class 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
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.