Uruçuí fire, 15 September 2024 Uruçuí
The fire started on 15 September 2024 in Uruçuí, Brazil, and satellites saw it burning for 11 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,716 hectares from heat detections, spread across a single municipality.
It is the 564th largest in Piaui since 2016 (of 803 with a page). Number 993 in Brazil in 2024, of 1301.
- Burnt area
- 3,716ha
- GWIS perimeter (Copernicus)
- Duration
- 11days
- 15 Sept 2024 – 25 Sept 2024
- Municipalities hit
- 1
- municipalities
- Started on
- 15 Sept
- 2024
- Heat detections
- 108
- in a single hotspot: 40 MW
- Danger at start
- 55
- Extreme · FWI index
- Energy released
- 824MW
- 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 33 days without rain (1 mm or more) when it started.
This area had burned before
99% of the perimeter overlaps earlier fires recorded since 2016: 2,046 ha in 2016, 207 ha in 2017, 2,253 ha in 2018, 90 ha in 2019, 703 ha in 2020, 566 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 3,670 ha that had burned before.
- 1,952 ha Uruçuí fire, August 2018 4,358 ha in total; the hectares shown are those it shares with this fire
- 1,380 ha Uruçuí fire, September 2016 3,819 ha in total; the hectares shown are those it shares with this fire
- 194 ha Uruçuí fire, September 2017 3,841 ha in total; the hectares shown are those it shares with this fire
What happened to each town
-
3,735 ha reached on 15 Sept0.4 %
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) |
|---|---|---|---|---|---|
| 15 Sept | 37.2 °C | 21 % | 44 km/h | 0.0 mm | Extreme 55 |
| 16 Sept | 38.6 °C | 21 % | 44 km/h | 0.0 mm | Extreme 55 |
| 17 Sept | 38.6 °C | 18 % | 39 km/h | 0.0 mm | Extreme 52 |
| 18 Sept | 37.3 °C | 20 % | 47 km/h | 0.0 mm | Extreme 58 |
| 19 Sept | 37.3 °C | 23 % | 46 km/h | 0.0 mm | Extreme 56 |
| 20 Sept | 37.5 °C | 21 % | 46 km/h | 0.0 mm | Extreme 57 |
| 21 Sept | 37.6 °C | 21 % | 45 km/h | 0.0 mm | Extreme 55 |
| 22 Sept | 38.1 °C | 19 % | 40 km/h | 0.0 mm | Extreme 52 |
| 23 Sept | 38.4 °C | 19 % | 42 km/h | 0.0 mm | Extreme 54 |
| 24 Sept | 37.9 °C | 24 % | 42 km/h | 0.0 mm | Extreme 53 |
| 25 Sept | 35.4 °C | 29 % | 41 km/h | 0.0 mm | Very high 46 |
| 26 Sept after | 35.5 °C | 26 % | 43 km/h | 0.0 mm | Very high 47 |
| 27 Sept after | 36.7 °C | 22 % | 40 km/h | 0.0 mm | Very high 46 |
| 28 Sept after | 38.3 °C | 20 % | 36 km/h | 0.0 mm | Very high 46 |
| 29 Sept after | 37.9 °C | 24 % | 32 km/h | 0.0 mm | Very high 46 |
| 30 Sept after | 36.7 °C | 26 % | 44 km/h | 0.0 mm | Extreme 52 |
| 1 Oct after | 37.8 °C | 20 % | 40 km/h | 0.0 mm | Extreme 52 |
| 2 Oct after | 38.0 °C | 18 % | 36 km/h | 0.0 mm | Very high 48 |
| 3 Oct after | 39.0 °C | 19 % | 40 km/h | 0.0 mm | Extreme 50 |
| 4 Oct after | 37.6 °C | 27 % | 31 km/h | 0.0 mm | Very high 42 |
| 5 Oct after | 37.8 °C | 23 % | 27 km/h | 0.0 mm | Very high 41 |
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 17 September 2024 the air beside the fire reached 17 µg/m³ of PM2.5, but no daily average passed the WHO 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 · 108Every 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 Uruçuí fire last?
- GWIS (Copernicus) dates it between 15 September 2024 and 25 September 2024: 11 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 3,716 hectares (37.2 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Uruçuí (3,735 ha, 0.4 %).
- What was the weather like?
- During the fire the temperature reached 38.6 °C, humidity dropped to 18 % and gusts hit 47 km/h. The fire danger index (FWI) reached 58, 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.