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Uruçuí fire, 13 September 2017 Uruçuí

Out · last detection 20 Sept 2017, 17:16 UTC

The fire started on 13 September 2017 in Uruçuí, Brazil, and satellites saw it burning for 7 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,623 hectares from heat detections, spread across a single municipality.

It is the 588th largest in Piaui since 2016 (of 803 with a page). Number 742 in Brazil in 2017, of 994.

Burnt area
3,623ha
GWIS perimeter (Copernicus)
Duration
7days
13 Sept 2017 – 19 Sept 2017
Municipalities hit
1
municipalities
Started on
13 Sept
2017
Heat detections
142
in a single hotspot: 51 MW
Danger at start
51
Extreme · FWI index
Energy released
1.0GW
sum of detected power

Where it burned

20 Sept 2017
HOTSPOTS BY DAY 13 Sept19 Sept

How it evolved, day by day

1314151617181920

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

The weather it burned in

37°high
53km/h · peak gust
22%lowest humidity

It had gone more than two months without rain (1 mm or more) when it started.

This area had burned before

No earlier perimeters overlap this fire since 2016, when the satellite record begins.

What happened to each town

  1. Uruçuí 25,203 inhabitants where it started
    3,645 ha reached on 12 Sept
    0.4 %

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)
12 Sept 35.6 °C 26 % 50 km/h 0.0 mm Extreme 51
13 Sept 36.0 °C 26 % 49 km/h 0.0 mm Extreme 50
14 Sept 36.9 °C 23 % 50 km/h 0.0 mm Extreme 53
15 Sept 35.7 °C 22 % 53 km/h 0.0 mm Extreme 54
16 Sept 34.8 °C 27 % 50 km/h 0.0 mm Extreme 51
17 Sept 35.9 °C 26 % 48 km/h 0.0 mm Extreme 51
18 Sept 36.3 °C 27 % 50 km/h 0.0 mm Extreme 53
19 Sept 37.4 °C 23 % 49 km/h 0.0 mm Extreme 52
20 Sept after 36.8 °C 24 % 50 km/h 0.0 mm Extreme 54
21 Sept after 36.8 °C 24 % 51 km/h 0.0 mm Extreme 55
22 Sept after 36.3 °C 26 % 49 km/h 0.0 mm Extreme 54
23 Sept after 36.1 °C 28 % 46 km/h 0.0 mm Extreme 51
24 Sept after 36.3 °C 23 % 45 km/h 0.0 mm Extreme 52
25 Sept after 36.2 °C 24 % 48 km/h 0.0 mm Extreme 53
26 Sept after 37.4 °C 21 % 47 km/h 0.0 mm Extreme 53
27 Sept after 37.5 °C 23 % 46 km/h 0.0 mm Extreme 53
28 Sept after 38.0 °C 27 % 47 km/h 0.0 mm Extreme 52
29 Sept after 37.8 °C 26 % 49 km/h 0.0 mm Extreme 54
30 Sept after 37.7 °C 24 % 44 km/h 0.0 mm Very high 50
1 Oct after 37.9 °C 25 % 45 km/h 0.0 mm Extreme 51

Before and after, from space

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

Before · 6 Sept 2017
After · 26 Sept 2017

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 · 142Every 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 Uruçuí fire last?
GWIS (Copernicus) dates it between 13 September 2017 and 19 September 2017: 7 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 3,623 hectares (36.2 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Uruçuí (3,645 ha, 0.4 %).
What was the weather like?
During the fire the temperature reached 37.4 °C, humidity dropped to 22 % and gusts hit 53 km/h. The fire danger index (FWI) reached 55, 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.