Casteltermini fire, 4 September 2023 Casteltermini
The fire started on 4 September 2023 in Casteltermini, Italy, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 124 hectares from satellite imagery, spread across a single municipality.
It is the 229th largest in Agrigento since 2016 (of 289 with a page). Number 167 in Italy in 2023, of 207.
Compare with…
We have the Copernicus perimeter for this fire, but the VIIRS sensors did not capture it in enough detail: no day-by-day evolution, but the split by municipality is there.
- Burnt area
- 124ha
- Copernicus perimeter
- Duration
- 1day
- 4 Sept 2023 – 4 Sept 2023
- Municipalities hit
- 1
- municipalities
- Started on
- 4 Sept
- 2023
- Danger at start
- 35
- High · FWI index
Where it burned
The weather it burned in
It had gone 5 days without rain (1 mm or more) when it started.
This area had burned before
96% of the perimeter overlaps earlier fires recorded since 2016: 113 ha in 2017, 118 ha in 2020. Part of it burned more than once, so the yearly figures add up to more than the 119 ha that had burned before.
What happened to each town
-
124 ha1.2 %
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 scrub84 %
- Agricultural areas16 %
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) |
|---|---|---|---|---|---|
| 4 Sept | 31.2 °C | 34 % | 51 km/h | 0.0 mm | High 35 |
| 5 Sept after | 28.8 °C | 41 % | 56 km/h | 0.0 mm | High 37 |
| 6 Sept after | 30.3 °C | 39 % | 59 km/h | 0.7 mm | High 30 |
| 7 Sept after | 31.5 °C | 40 % | 48 km/h | 0.6 mm | High 30 |
| 8 Sept after | 29.1 °C | 43 % | 33 km/h | 0.6 mm | High 24 |
| 9 Sept after | 32.5 °C | 36 % | 22 km/h | 0.6 mm | High 24 |
| 10 Sept after | 33.1 °C | 31 % | 26 km/h | 0.0 mm | High 27 |
| 11 Sept after | 32.6 °C | 33 % | 32 km/h | 0.0 mm | High 31 |
| 12 Sept after | 32.3 °C | 31 % | 31 km/h | 0.0 mm | High 30 |
| 13 Sept after | 32.3 °C | 31 % | 34 km/h | 0.0 mm | High 32 |
| 14 Sept after | 32.2 °C | 23 % | 31 km/h | 0.0 mm | Very 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 3 September 2023 the air beside the fire reached 12 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)
Other fires nearby
Frequently asked questions
- How long did the Casteltermini fire last?
- Copernicus dates it between 4 September 2023 and 4 September 2023: 1 day between the first and last image with fire.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 124 hectares (1.2 km²). Official national figures may differ.
- Which municipalities burned?
- The fire only entered Casteltermini (124 ha, 1.2 %).
- Did the fire reach a town?
- The fire started in Casteltermini 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 31.2 °C, humidity dropped to 34 % and gusts hit 51 km/h. The fire danger index (FWI) reached 35, class 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.
Report an error
How we know this
- Perimeter: EFFIS (Copernicus), mapped on satellite imagery.
- Dates from the perimeter: the VIIRS detections inside it did not change them. No 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.