Guasila fire, June 2025 Guasila, Segariu, Furtei
The fire started on 15 June 2025 in Guasila, Italy, and satellites saw it burning for 2 days. Copernicus mapped a burnt perimeter of 230 hectares from satellite imagery, spread across 3 municipalities.
It is the 17th largest in Sud Sardegna since 2016 (of 37 with a page). Number 81 in Italy in 2025, of 216.
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- Burnt area
- 230ha
- Copernicus perimeter
- Duration
- 2days
- 15 Jun 2025 – 16 Jun 2025
- Municipalities hit
- 3
- municipalities
- Started on
- 15 Jun
- 2025
- Heat detections
- 11
- in a single hotspot: 101 MW
- Danger at start
- 38
- Very high · FWI index
- Average daily power
- 385MW
- detected power per day, on average
Where it burned
How it evolved, day by day
15 Jun 2025 · 385 MW · 11
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 29 days without rain (1 mm or more) when it started.
This area had burned before
13% of the perimeter overlaps earlier fires recorded since 2016: 30 ha in 2021.
What happened to each town
-
173 ha reached on 15 Jun4.0 %
-
Segariu 1,111 inhabitants · 1.6 km from the centre56 ha reached on 15 Jun3.4 %
-
Furtei 1,513 inhabitants · 3.9 km from the centre0 ha0.0 %
Burnt area inside each municipality, from crossing the official perimeter with administrative boundaries. The distance runs from the point marking the centre of each area to the nearest fire: staying a kilometre away does not mean it reached the houses.
What burned
- Sclerophyllous scrub54 %
- Agricultural areas44 %
- Broadleaved forest2.2 %
Land cover inside the perimeter according to Corine Land Cover, as reported by Copernicus.
Official record
According to CFVA Sardegna, this fire started on 15 June 2025 and burned 216 ha (the satellite measured 230 ha).
- Guasila Monte Sebera 15 June 2025 216 ha
Regione Autonoma della Sardegna, Corpo Forestale e di Vigilanza Ambientale: perimetri delle aree percorse dal fuoco (CC BY 4.0). This is the agency’s consolidated statistic: it measures the area in its own way, which is why it can differ from the satellite.
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 Jun | 35.7 °C | 20 % | 37 km/h | 0.0 mm | Very high 38 |
| 16 Jun | 35.4 °C | 14 % | 50 km/h | 0.0 mm | Very high 46 |
| 17 Jun after | 29.9 °C | 43 % | 38 km/h | 0.0 mm | High 32 |
| 18 Jun after | 28.7 °C | 40 % | 25 km/h | 0.1 mm | High 27 |
| 19 Jun after | 30.6 °C | 35 % | 27 km/h | 0.1 mm | High 27 |
| 20 Jun after | 31.9 °C | 32 % | 40 km/h | 0.1 mm | High 32 |
| 21 Jun after | 32.4 °C | 30 % | 27 km/h | 0.0 mm | High 27 |
| 22 Jun after | 32.6 °C | 31 % | 27 km/h | 0.0 mm | High 29 |
| 23 Jun after | 32.6 °C | 28 % | 37 km/h | 0.0 mm | High 34 |
| 24 Jun after | 34.0 °C | 30 % | 39 km/h | 0.1 mm | High 35 |
| 25 Jun after | 34.6 °C | 26 % | 31 km/h | 0.0 mm | High 33 |
| 26 Jun after | 36.0 °C | 26 % | 34 km/h | 0.0 mm | High 38 |
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 13 June 2025 the air beside the fire reached 14 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 · 11Every 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 Guasila fire last?
- Copernicus dates it between 15 June 2025 and 16 June 2025: 2 days between the first and last image with fire.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 230 hectares (2.3 km²). Official national figures may differ.
- Which municipalities burned?
- The fire entered 3 municipalities: Guasila (173 ha, 4.0 %); Segariu (56 ha, 3.4 %); Furtei (0 ha, 0.0 %).
- Did the fire reach a town?
- The fire came within 1.6 km of the centre of Segariu, the closest of the areas it touched. That is the distance from the perimeter, or the nearest hotspot, to the point marking the centre; it does not mean it entered the houses.
- What was the weather like?
- During the fire the temperature reached 35.7 °C, humidity dropped to 14 % and gusts hit 50 km/h. The fire danger index (FWI) reached 46, class Very high.
- Where does this data come from?
- From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Italy (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: 112 · 1515 · Emergency number and official warnings ›
Satellite cross-check
History of this page Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
No changes since 24 October 2026.
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.
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How we know this
- Perimeter: EFFIS (Copernicus), mapped on satellite imagery.
- Dates from the perimeter: the VIIRS detections inside it did not change them. 11 Suomi-NPP VIIRS detections on those dates.
- Compared with CFVA Sardegna: 216 official ha against 230 ha of perimeter; they agree within 25%.
- Weather: Copernicus ERA5 reanalysis at the fire location, in cells of about 25 km.
Where this data comes from
The perimeter and land cover come from the Copernicus European Forest Fire Information System (EFFIS), measured on MODIS and Sentinel-2 imagery and published under CC BY 4.0. 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 ADM4 (Creative Commons Attribution 3.0 License). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ slightly from each country’s official figure.