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Corumbá fire, 18 August 2021 Corumbá

Out · last detection 22 Aug 2021, 18:03 UTC

The fire started on 18 August 2021 in Corumbá, Brazil, and satellites saw it burning for 4 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 5,111 hectares from heat detections, spread across a single municipality.

It is the 293th largest in Mato Grosso do Sul since 2016 (of 506 with a page). Number 380 in Brazil in 2021, of 814.

Burnt area
5,111ha
GWIS perimeter (Copernicus)
Duration
4days
18 Aug 2021 – 21 Aug 2021
Municipalities hit
1
municipalities
Started on
18 Aug
2021
Heat detections
164
in a single hotspot: 229 MW
Danger at start
62
Extreme · FWI index
Energy released
6.8GW
sum of detected power

Where it burned

22 Aug 2021
HOTSPOTS BY DAY 18 Aug21 Aug

How it evolved, day by day

1819202122

Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.

The weather it burned in

39°high
62km/h · peak gust
16%lowest humidity

It had gone 32 days without rain (1 mm or more) when it started. Rain came after the fire: 8.4 mm on 26 Aug.

This area had burned before

89% of the perimeter overlaps earlier fires recorded since 2016: 1,326 ha in 2016, 401 ha in 2017, 4,298 ha in 2019, 2,434 ha in 2020. Part of it burned more than once, so the yearly figures add up to more than the 4,533 ha that had burned before.

What happened to each town

  1. Corumbá 96,268 inhabitants where it started
    5,181 ha reached on 18 Aug
    0.1 %

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)
18 Aug 39.2 °C 18 % 52 km/h 0.0 mm Extreme 62
19 Aug 38.5 °C 16 % 62 km/h 0.0 mm Extreme 69
20 Aug 38.5 °C 17 % 46 km/h 0.0 mm Extreme 59
21 Aug 36.7 °C 19 % 37 km/h 0.0 mm Very high 50
22 Aug after 38.5 °C 20 % 54 km/h 0.0 mm Extreme 64
23 Aug after 38.3 °C 26 % 57 km/h 0.0 mm Extreme 60
24 Aug after 38.9 °C 22 % 57 km/h 0.0 mm Extreme 62
25 Aug after 33.3 °C 26 % 47 km/h 0.0 mm Extreme 55
26 Aug after 20.1 °C 58 % 49 km/h 8.4 mm Very low 5

Before and after, from space

Drag the line to compare the same ground before the fire and after it.

Before · 11 Aug 2021
After · 28 Aug 2021

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 · 164Every satellite heat detection, one by one, with time, satellite, power and coordinates.
⬇ Download CSV Times in UTC. Each detection is a 375 m pixel: a large fire yields hundreds per pass.
Date and timeSatelliteFRP (MW)LatLon

Other fires nearby

All fires in Brazil ›

Frequently asked questions

How long did the Corumbá fire last?
GWIS (Copernicus) dates it between 18 August 2021 and 21 August 2021: 4 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 5,111 hectares (51.1 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Corumbá (5,181 ha, 0.1 %).
What was the weather like?
During the fire the temperature reached 39.2 °C, humidity dropped to 16 % and gusts hit 62 km/h. The fire danger index (FWI) reached 69, 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
What do you think is wrong?

We will only use your email to reply about this report. Privacy. This is not an emergency service: if there is a fire now, call 193.

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.