Corumbá fire, 8 September 2023 Corumbá
The fire started on 8 September 2023 in Corumbá, Brazil, and satellites saw it burning for 5 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 7,030 hectares from heat detections, spread across a single municipality.
It is the 203th largest in Mato Grosso do Sul since 2016 (of 506 with a page). Number 91 in Brazil in 2023, of 431.
- Burnt area
- 7,030ha
- GWIS perimeter (Copernicus)
- Duration
- 5days
- 8 Sept 2023 – 12 Sept 2023
- Municipalities hit
- 1
- municipalities
- Started on
- 8 Sept
- 2023
- Heat detections
- 142
- in a single hotspot: 65 MW
- Danger at start
- 27
- High · FWI index
- Average daily power
- 786MW
- 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 3 days without rain (1 mm or more) when it started. Rain came after the fire: 13.7 mm on 13 Sept.
This area had burned before
80% of the perimeter overlaps earlier fires recorded since 2016: 2,351 ha in 2016, 1,594 ha in 2017, 3,927 ha in 2019, 1,486 ha in 2020, 842 ha in 2021, 1,768 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 5,630 ha that had burned before.
- 1,804 ha Corumbá fire, October 2016 6,000 ha in total; the hectares shown are those it shares with this fire
- 1,347 ha Puerto Suárez fire, June 2019 24,785 ha in total; the hectares shown are those it shares with this fire
- 927 ha Corumbá fire, September 2022 3,273 ha in total; the hectares shown are those it shares with this fire
- 895 ha Puerto Suárez fire, August 2019 151,193 ha in total; the hectares shown are those it shares with this fire
- 616 ha Corumbá fire, August 2017 3,837 ha in total; the hectares shown are those it shares with this fire
- 547 ha Corumbá fire, September 2016 9,356 ha in total; the hectares shown are those it shares with this fire
- 233 ha Corumbá fire, October 2019 6,324 ha in total; the hectares shown are those it shares with this fire
- 52 ha Corumbá fire, August 2017 5,515 ha in total; the hectares shown are those it shares with this fire
What happened to each town
-
4,572 ha reached on 11 Sept0.1 %
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) |
|---|---|---|---|---|---|
| 8 Sept | 32.9 °C | 48 % | 51 km/h | 0.2 mm | High 27 |
| 9 Sept | 34.1 °C | 46 % | 40 km/h | 7.2 mm | Low 6 |
| 10 Sept | 36.2 °C | 34 % | 30 km/h | 0.0 mm | High 24 |
| 11 Sept | 39.6 °C | 27 % | 48 km/h | 0.0 mm | Very high 40 |
| 12 Sept | 37.1 °C | 36 % | 50 km/h | 0.3 mm | Very high 42 |
| 13 Sept after | 28.9 °C | 51 % | 49 km/h | 13.7 mm | Very low 5 |
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 14 September 2023 the air beside the fire reached 39 µg/m³ of PM2.5. That day averaged 17: 1.2 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 · 142Every 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 Corumbá fire last?
- GWIS (Copernicus) dates it between 8 September 2023 and 12 September 2023: 5 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 7,030 hectares (70.3 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Corumbá (4,572 ha, 0.1 %).
- What was the weather like?
- During the fire the temperature reached 39.6 °C, humidity dropped to 27 % and gusts hit 51 km/h. The fire danger index (FWI) reached 42, class Very high.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Brazil (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: 193
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
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. 142 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 3.0 Intergovernmental Organisations (CC BY 3.0 IGO)). 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.