Sonnino fire, August 2026 Sonnino, Amaseno
The fire started on 25 August 2026 in Sonnino, Italy, and satellites saw it burning for 5 days. Copernicus mapped a burnt perimeter of 151 hectares from satellite imagery, spread across 2 municipalities.
It is the 29th largest in Latina since 2016 (of 52 with a page). Number 148 in Italy in 2026, of 232.
Compare with…
- Burnt area
- 151ha
- Copernicus perimeter
- Duration
- ≈ 5days
- 25 Aug 2026 – 29 Aug 2026
- Municipalities hit
- 2
- municipalities
- Started on
- 25 Aug
- 2026
- Heat detections
- 20
- in a single hotspot: 43 MW
- Danger at start
- 11
- Low · FWI index
- Average daily power
- 45MW
- detected power per day, on average
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 3 days without rain (1 mm or more) when it started.
This area had burned before
31% of the perimeter overlaps earlier fires recorded since 2016: 46 ha in 2019, 2 ha in 2022.
What happened to each town
-
151 ha reached on 25 Aug2.4 %
-
Amaseno 4,094 inhabitants · 6.2 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
- Scrub and transitional woodland56 %
- Other natural land34 %
- Broadleaved forest6.8 %
- Agricultural areas3.4 %
Natura 2000 protected area affected: 100 %
- ZEPA Monti Ausoni e Aurunci IT6040043
Natura 2000 sites (European Environment Agency, 2024 release) crossed by the perimeter.
Land cover inside the perimeter according to Corine Land Cover, as reported by Copernicus.
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) |
|---|---|---|---|---|---|
| 25 Aug | 29.8 °C | 60 % | 45 km/h | 1.5 mm | Low 11 |
| 26 Aug | 31.5 °C | 55 % | 26 km/h | 0.0 mm | Moderate 16 |
| 27 Aug | 33.7 °C | 41 % | 27 km/h | 0.0 mm | High 24 |
| 28 Aug | 36.4 °C | 25 % | 35 km/h | 0.0 mm | High 34 |
| 29 Aug | 34.0 °C | 35 % | 52 km/h | 0.0 mm | High 33 |
| 30 Aug after | 32.5 °C | 44 % | 32 km/h | 0.0 mm | High 30 |
| 31 Aug after | 32.6 °C | 35 % | 34 km/h | 0.0 mm | High 30 |
| 1 Sept after | 31.5 °C | 46 % | 34 km/h | 0.0 mm | High 26 |
| 2 Sept after | 30.8 °C | 49 % | 30 km/h | 0.0 mm | High 25 |
| 3 Sept after | 30.7 °C | 46 % | 26 km/h | 0.0 mm | High 24 |
| 4 Sept after | 33.2 °C | 27 % | 27 km/h | 0.0 mm | High 32 |
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 28 August 2026 the air beside the fire reached 62 µg/m³ of PM2.5. That day averaged 33: 2.2 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 · 20Every 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 Sonnino fire last?
- The official perimeter only gives the start date (25 August 2026). The end comes from the heat detections inside the perimeter: it burned until 29 August 2026 (5 days from 25 August 2026), the last day with detections before more than 10 days in a row without any, so it is approximate.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 151 hectares (1.5 km²). Official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Sonnino (151 ha, 2.4 %); Amaseno (0 ha, 0.0 %).
- Did the fire reach a town?
- The fire started in Sonnino and came within 1.8 km of its centre. 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 29.8 °C, humidity dropped to 60 % and gusts hit 45 km/h. The fire danger index (FWI) reached 11, class Low.
- 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.
Report an error
How we know this
- Perimeter: EFFIS (Copernicus), mapped on satellite imagery.
- The official perimeter has no end date: the end is the last day with VIIRS detections inside the perimeter before a gap of more than 10 days (150 days at most), so it is approximate. 20 Suomi-NPP VIIRS detections on those dates.
- We have not matched this page with any official record.
- 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.