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Jerumenha fire, 3 September 2026 Jerumenha

Out · last detection 15 Sept 2026, 16:50 UTC

The fire started on 3 September 2026 in Jerumenha, Brazil, and satellites saw it burning for 13 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,348 hectares from heat detections, spread across a single municipality.

It is the 677th largest in Piaui since 2016 (of 804 with a page). Number 649 in Brazil in 2026, of 749.

Burnt area
3,348ha
GWIS perimeter (Copernicus)
Duration
13days
3 Sept 2026 – 15 Sept 2026
Municipalities hit
1
municipalities
Started on
3 Sept
2026
Heat detections
70
in a single hotspot: 31 MW
Danger at start
41
Very high · FWI index
Energy released
496MW
sum of detected power

Where it burned

15 Sept 2026
HOTSPOTS BY DAY 3 Sept15 Sept

How it evolved, day by day

459101112131415

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

The weather it burned in

40°high
45km/h · peak gust
15%lowest humidity

It had gone 49 days without rain (1 mm or more) when it started.

This area had burned before

60% of the perimeter overlaps earlier fires recorded since 2016: 81 ha in 2018, 592 ha in 2019, 724 ha in 2020, 1,091 ha in 2025. Part of it burned more than once, so the yearly figures add up to more than the 2,001 ha that had burned before.

What happened to each town

  1. Jerumenha 4,497 inhabitants where it started
    3,370 ha reached on 4 Sept
    1.8 %

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)
3 Sept 37.5 °C 31 % 24 km/h 0.0 mm Very high 41
4 Sept 35.8 °C 36 % 23 km/h 1.4 mm High 25
5 Sept 36.3 °C 31 % 20 km/h 0.0 mm High 33
6 Sept 34.8 °C 38 % 26 km/h 0.0 mm High 35
7 Sept 37.8 °C 27 % 19 km/h 0.0 mm High 36
8 Sept 36.8 °C 25 % 40 km/h 0.0 mm Very high 48
9 Sept 37.0 °C 15 % 35 km/h 0.0 mm Extreme 53
10 Sept 36.5 °C 23 % 45 km/h 0.0 mm Extreme 59
11 Sept 36.8 °C 21 % 42 km/h 0.0 mm Extreme 59
12 Sept 37.6 °C 22 % 37 km/h 0.0 mm Extreme 55
13 Sept 39.5 °C 17 % 35 km/h 0.0 mm Extreme 54
14 Sept 38.5 °C 21 % 30 km/h 0.0 mm Extreme 51
15 Sept 38.2 °C 20 % 33 km/h 0.0 mm Extreme 54
16 Sept after 39.5 °C 17 % 30 km/h 0.0 mm Extreme 52
17 Sept after 37.8 °C 22 % 45 km/h 0.0 mm Extreme 62
18 Sept after 36.6 °C 28 % 49 km/h 0.0 mm Extreme 59
19 Sept after 37.4 °C 19 % 42 km/h 0.0 mm Extreme 56
20 Sept after 36.3 °C 25 % 40 km/h 0.0 mm Extreme 55
21 Sept after 38.7 °C 21 % 36 km/h 0.0 mm Extreme 51
22 Sept after 39.0 °C 20 % 26 km/h 0.0 mm Very high 45
23 Sept after 38.5 °C 26 % 29 km/h 0.0 mm Very high 47
24 Sept after 38.5 °C 28 % 30 km/h 0.0 mm Very high 48
25 Sept after 36.8 °C 31 % 24 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.

Before · 27 Aug 2026
After · 22 Sept 2026

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 · Copernicus

On 17 September 2026 the air beside the fire reached 46 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak46 µg/m³
Days over the guideline0 days
PM1046 µg/m³
Optical depth0.37
123456789101112131415161718
Good Fair Moderate Poor Very poor Extremely poor

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 · 70Every 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 Jerumenha fire last?
GWIS (Copernicus) dates it between 3 September 2026 and 15 September 2026: 13 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 3,348 hectares (33.5 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Jerumenha (3,370 ha, 1.8 %).
What was the weather like?
During the fire the temperature reached 39.5 °C, humidity dropped to 15 % and gusts hit 45 km/h. The fire danger index (FWI) reached 59, 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.