Corumbá fire, 23 August 2021 Corumbá, Porto Murtinho
The fire started on 23 August 2021 in Corumbá, Brazil, and satellites saw it burning for 3 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,863 hectares from heat detections, spread across 2 municipalities.
It is the 393th largest in Mato Grosso do Sul since 2016 (of 506 with a page). Number 576 in Brazil in 2021, of 814.
- Burnt area
- 3,863ha
- GWIS perimeter (Copernicus)
- Duration
- 3days
- 23 Aug 2021 – 25 Aug 2021
- Municipalities hit
- 2
- municipalities
- Started on
- 23 Aug
- 2021
- Heat detections
- 127
- in a single hotspot: 171 MW
- Danger at start
- 60
- Extreme · FWI index
- Energy released
- 4.0GW
- 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 36 days without rain (1 mm or more) when it started. Rain came after the fire: 9.9 mm on 26 Aug.
This area had burned before
99% of the perimeter overlaps earlier fires recorded since 2016: 1,738 ha in 2016, 916 ha in 2017, 3,736 ha in 2019, 1,834 ha in 2020. Part of it burned more than once, so the yearly figures add up to more than the 3,820 ha that had burned before.
- 2,732 ha Corumbá fire, September 2019 6,015 ha in total; the hectares shown are those it shares with this fire
- 742 ha Corumbá fire, August 2020 3,900 ha in total; the hectares shown are those it shares with this fire
- 706 ha Corumbá fire, September 2016 5,055 ha in total; the hectares shown are those it shares with this fire
What happened to each town
-
2,433 ha reached on 23 Aug0.0 %
-
Porto Murtinho 12,859 inhabitants1,472 ha reached on 24 Aug0.1 %
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 Aug | 37.9 °C | 27 % | 57 km/h | 0.0 mm | Extreme 60 |
| 24 Aug | 38.3 °C | 23 % | 58 km/h | 0.0 mm | Extreme 60 |
| 25 Aug | 32.8 °C | 25 % | 50 km/h | 0.0 mm | Extreme 56 |
| 26 Aug after | 19.4 °C | 62 % | 50 km/h | 9.9 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.
Detections table · 127Every 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 23 August 2021 and 25 August 2021: 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 3,863 hectares (38.6 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Corumbá (2,433 ha, 0.0 %); Porto Murtinho (1,472 ha, 0.1 %).
- What was the weather like?
- During the fire the temperature reached 38.3 °C, humidity dropped to 23 % and gusts hit 58 km/h. The fire danger index (FWI) reached 60, class Extreme.
- 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
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.