Jerumenha fire, November 2025 Jerumenha, Canavieira, Itaueira
The fire started on 11 November 2025 in Jerumenha, Brazil, and satellites saw it burning for 7 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,486 hectares from heat detections, spread across 3 municipalities.
It is the 632th largest in Piaui since 2016 (of 804 with a page). Number 577 in Brazil in 2025, of 714.
The power measured by the satellite is low (22.3 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.
- Burnt area
- 3,486ha
- GWIS perimeter (Copernicus)
- Duration
- 7days
- 11 Nov 2025 – 17 Nov 2025
- Municipalities hit
- 3
- municipalities
- Started on
- 11 Nov
- 2025
- Heat detections
- 69
- in a single hotspot: 22 MW
- Danger at start
- 39
- Very high · FWI index
- Energy released
- 428MW
- 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 0 days without rain (1 mm or more) when it started. Rain came after the fire: 2.4 mm on 1 Dec.
This area had burned before
53% of the perimeter overlaps earlier fires recorded since 2016: 497 ha in 2018, 88 ha in 2020, 1,322 ha in 2024.
What happened to each town
-
3,201 ha reached on 13 Nov1.7 %
-
Canavieira 3,414 inhabitants202 ha reached on 15 Nov0.1 %
-
Itaueira 10,323 inhabitants108 ha reached on 14 Nov0.0 %
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) |
|---|---|---|---|---|---|
| 11 Nov | 36.8 °C | 22 % | 36 km/h | 0.0 mm | Very high 39 |
| 12 Nov | 37.2 °C | 22 % | 44 km/h | 0.0 mm | Very high 47 |
| 13 Nov | 37.4 °C | 19 % | 48 km/h | 0.0 mm | Extreme 53 |
| 14 Nov | 37.6 °C | 18 % | 50 km/h | 0.0 mm | Extreme 55 |
| 15 Nov | 37.9 °C | 17 % | 52 km/h | 0.0 mm | Extreme 58 |
| 16 Nov | 38.6 °C | 17 % | 48 km/h | 0.0 mm | Extreme 56 |
| 17 Nov | 38.5 °C | 21 % | 44 km/h | 0.0 mm | Extreme 53 |
| 18 Nov after | 36.4 °C | 31 % | 31 km/h | 0.0 mm | Very high 38 |
| 19 Nov after | 30.0 °C | 54 % | 32 km/h | 2.7 mm | Low 8 |
| 20 Nov after | 28.4 °C | 58 % | 32 km/h | 16.6 mm | Very low 1 |
| 21 Nov after | 31.2 °C | 54 % | 26 km/h | 0.9 mm | Low 6 |
| 22 Nov after | 35.3 °C | 35 % | 37 km/h | 0.1 mm | High 22 |
| 23 Nov after | 36.5 °C | 32 % | 41 km/h | 0.1 mm | High 30 |
| 24 Nov after | 35.8 °C | 29 % | 37 km/h | 0.0 mm | High 29 |
| 25 Nov after | 36.9 °C | 28 % | 31 km/h | 0.0 mm | High 27 |
| 26 Nov after | 36.0 °C | 30 % | 27 km/h | 0.0 mm | High 27 |
| 27 Nov after | 35.9 °C | 35 % | 25 km/h | 0.1 mm | High 28 |
| 28 Nov after | 35.4 °C | 31 % | 45 km/h | 0.0 mm | High 37 |
| 29 Nov after | 34.6 °C | 35 % | 44 km/h | 0.1 mm | High 36 |
| 30 Nov after | 34.0 °C | 35 % | 29 km/h | 0.0 mm | High 28 |
| 1 Dec after | 32.5 °C | 46 % | 28 km/h | 2.4 mm | Low 9 |
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 10 November 2025 the air beside the fire reached 24 µg/m³ of PM2.5. That day averaged 19: 1.2 times the WHO daily 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 · 69Every 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 Jerumenha fire last?
- GWIS (Copernicus) dates it between 11 November 2025 and 17 November 2025: 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 3,486 hectares (34.9 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 3 municipalities: Jerumenha (3,201 ha, 1.7 %); Canavieira (202 ha, 0.1 %); Itaueira (108 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 38.6 °C, humidity dropped to 17 % and gusts hit 52 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.