San Roque fire, August 2025 San Roque
The fire started on 29 August 2025 in San Roque, Argentina, and satellites saw it burning for 3 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 1,603 hectares from heat detections, spread across a single municipality.
It is the 188th largest in Corrientes since 2016 (of 203 with a page). Number 181 in Argentina in 2025, of 206.
- Burnt area
- 1,603ha
- GWIS perimeter (Copernicus)
- Duration
- 3days
- 29 Aug 2025 – 31 Aug 2025
- Municipalities hit
- 1
- departments
- Started on
- 29 Aug
- 2025
- Heat detections
- 5
- in a single hotspot: 66 MW
- Danger at start
- 14
- Moderate · FWI index
- Energy released
- 136MW
- 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 5 days without rain (1 mm or more) when it started. Rain came after the fire: 11.2 mm on 1 Sept.
This area had burned before
77% of the perimeter overlaps earlier fires recorded since 2016: 38 ha in 2018, 573 ha in 2020, 899 ha in 2023. Part of it burned more than once, so the yearly figures add up to more than the 1,230 ha that had burned before.
What happened to each town
-
San Roque where it started1,610 ha reached on 29 Aug0.7 %
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) |
|---|---|---|---|---|---|
| 29 Aug | 27.8 °C | 43 % | 37 km/h | 0.0 mm | Moderate 14 |
| 30 Aug | 29.5 °C | 51 % | 46 km/h | 0.0 mm | Moderate 18 |
| 31 Aug | 27.4 °C | 53 % | 62 km/h | 3.2 mm | Low 9 |
| 1 Sept after | 20.4 °C | 71 % | 52 km/h | 11.2 mm | Very low 0 |
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 1 September 2025 the air beside the fire reached 43 µg/m³ of PM2.5. That day averaged 25: 1.7 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 · 5Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 15,003 haConcepción22 August 2023 · 11 days · 17 km away
- 3,941 haConcepción6 April 2018 · 2 days · 19 km away
- 3,109 haSan RoqueFebruary 2023 · 12 days · 25 km away
- 3,247 haConcepción28 August 2020 · 2 days · 26 km away
- 2,406 haConcepción22 August 2020 · 3 days · 35 km away
- 4,168 haSan RoqueJanuary 2023 · 10 days · 36 km away
Frequently asked questions
- How long did the San Roque fire last?
- GWIS (Copernicus) dates it between 29 August 2025 and 31 August 2025: 3 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 1,603 hectares (16.0 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered San Roque (1,610 ha, 0.7 %).
- What was the weather like?
- During the fire the temperature reached 29.5 °C, humidity dropped to 43 % and gusts hit 62 km/h. The fire danger index (FWI) reached 18, class Moderate.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Argentina (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: 911 · 100
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.