How long did the Nova Ubiratã fire last?

GWIS (Copernicus) dates it between 7 August 2021 and 30 August 2021: 24 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 3,306 hectares (33.1 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire only entered Nova Ubiratã (3,322 ha, 0.3 %).

What was the weather like?

During the fire the temperature reached 37.7 °C, humidity dropped to 22 % and gusts hit 43 km/h. The fire danger index (FWI) reached 46, 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.

BR · Brazil · 2021-08-07 → 2021-08-30

Nova Ubiratã fire, August 2021 Nova Ubiratã

Out · last detection 30 Aug 2021, 17:15 UTC

The fire started on 7 August 2021 in Nova Ubiratã, Brazil, and satellites saw it burning for 24 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,306 hectares from heat detections, spread across a single municipality.

It is the 1778th largest in Mato Grosso since 2016 (of 1996 with a page). Number 711 in Brazil in 2021, of 814.

Burnt area: 3,306ha; GWIS perimeter (Copernicus)
Duration: 24days; 7 Aug 2021 – 30 Aug 2021
Municipalities hit: 1; municipalities
Started on: 7 Aug; 2021
Heat detections: 411; in a single hotspot: 120 MW
Danger at start: 33; High · FWI index
Energy released: 3.6GW; sum of detected power

Play back 30 Aug 2021

HOTSPOTS BY DAY 7 Aug30 Aug

How it evolved, day by day

7891011121314151617181920212223242526282930

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

The weather it burned in

38°high

43km/h · peak gust

22%lowest humidity

It had gone more than two months without rain (1 mm or more) when it started. Rain came after the fire: 6.4 mm on 9 Sept.

This area had burned before

51% of the perimeter overlaps earlier fires recorded since 2016: 1,673 ha in 2019.

1,673 ha Nova Ubiratã fire, September 2019 6,500 ha in total; the hectares shown are those it shares with this fire

What happened to each town

Nova Ubiratã 11,530 inhabitants where it started

3,322 ha reached on 7 Aug

0.3 %

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)
31 Jul	33.9 °C	30 %	25 km/h	0.0 mm	High 33
1 Aug	35.7 °C	24 %	29 km/h	0.0 mm	High 38
2 Aug	33.5 °C	32 %	30 km/h	0.0 mm	High 37
3 Aug	33.7 °C	31 %	27 km/h	0.0 mm	High 37
4 Aug	33.5 °C	30 %	29 km/h	0.0 mm	High 37
5 Aug	34.5 °C	25 %	26 km/h	0.0 mm	High 37
6 Aug	33.5 °C	30 %	32 km/h	0.0 mm	High 36
7 Aug	33.4 °C	28 %	32 km/h	0.0 mm	High 38
8 Aug	33.6 °C	32 %	37 km/h	0.0 mm	Very high 38
9 Aug	33.9 °C	31 %	30 km/h	0.0 mm	High 37
10 Aug	34.6 °C	28 %	27 km/h	0.0 mm	High 37
11 Aug	35.0 °C	27 %	27 km/h	0.0 mm	High 37
12 Aug	34.0 °C	26 %	27 km/h	0.0 mm	Very high 39
13 Aug	35.6 °C	24 %	25 km/h	0.0 mm	High 38
14 Aug	34.7 °C	28 %	25 km/h	0.0 mm	Very high 40
15 Aug	35.9 °C	23 %	24 km/h	0.0 mm	High 36
16 Aug	36.6 °C	22 %	32 km/h	0.0 mm	Very high 39
17 Aug	36.2 °C	25 %	32 km/h	0.0 mm	Very high 41
18 Aug	35.7 °C	22 %	38 km/h	0.0 mm	Very high 45
19 Aug	35.6 °C	22 %	43 km/h	0.0 mm	Very high 46
20 Aug	34.3 °C	29 %	36 km/h	0.0 mm	Very high 40
21 Aug	35.3 °C	26 %	28 km/h	0.0 mm	Very high 39
22 Aug	35.7 °C	27 %	30 km/h	0.0 mm	Very high 39
23 Aug	36.3 °C	28 %	35 km/h	0.0 mm	Very high 40
24 Aug	36.8 °C	24 %	32 km/h	0.0 mm	Very high 39
25 Aug	37.7 °C	26 %	35 km/h	0.0 mm	Very high 41
26 Aug	37.3 °C	26 %	19 km/h	0.0 mm	Very high 41
27 Aug	36.3 °C	28 %	26 km/h	0.0 mm	Very high 42
28 Aug	36.3 °C	29 %	34 km/h	0.0 mm	Very high 42
29 Aug	37.0 °C	24 %	34 km/h	0.0 mm	Very high 42
30 Aug	35.5 °C	33 %	37 km/h	0.0 mm	Very high 41
31 Aug after	35.8 °C	32 %	36 km/h	0.0 mm	Very high 38
1 Sept after	34.5 °C	36 %	29 km/h	0.0 mm	High 36
2 Sept after	34.8 °C	43 %	27 km/h	0.0 mm	High 30
3 Sept after	32.8 °C	38 %	27 km/h	0.0 mm	High 30
4 Sept after	35.7 °C	32 %	29 km/h	0.0 mm	High 32
5 Sept after	36.0 °C	32 %	25 km/h	0.0 mm	High 31
6 Sept after	35.9 °C	37 %	28 km/h	0.0 mm	High 33
7 Sept after	38.0 °C	34 %	31 km/h	0.0 mm	High 33
8 Sept after	37.2 °C	35 %	30 km/h	0.0 mm	High 34
9 Sept after	33.4 °C	47 %	30 km/h	6.4 mm	Low 7

Before and after, from space

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

↔

Before · 31 Jul 2021

After · 6 Sept 2021

Before After

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 · 411Every 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 time	Satellite	FRP (MW)	Lat	Lon

Other fires nearby

All fires in Brazil ›

Frequently asked questions

How long did the Nova Ubiratã fire last?: GWIS (Copernicus) dates it between 7 August 2021 and 30 August 2021: 24 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 3,306 hectares (33.1 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire only entered Nova Ubiratã (3,322 ha, 0.3 %).
What was the weather like?: During the fire the temperature reached 37.7 °C, humidity dropped to 22 % and gusts hit 43 km/h. The fire danger index (FWI) reached 46, 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

INPE · Programa Queimadas ↗
IBAMA · Prevfogo ↗

Satellite cross-check

NASA FIRMS ↗
GWIS · Copernicus ↗

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.

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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.

Where it burned