Vicalvi fire, August 2017 Posta Fibreno, Alvito, Vicalvi
The fire started on 28 August 2017 in Vicalvi, Italy, and satellites saw it burning for 3 days. Copernicus mapped a burnt perimeter of 433 hectares from satellite imagery, spread across 4 municipalities.
It is the largest fire in Frosinone since 2016 (of 33 with a page). Number 50 in Italy in 2017, of 361.
- Burnt area
- 433ha
- Copernicus perimeter
- Duration
- 3days
- 28 Aug 2017 – 30 Aug 2017
- Municipalities hit
- 4
- municipalities
- Started on
- 28 Aug
- 2017
- Heat detections
- 11
- in a single hotspot: 38 MW
- Danger at start
- 15
- Moderate · FWI index
- Energy released
- 97MW
- 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 0 days without rain (1 mm or more) when it started. Rain came after the fire: 3.3 mm on 1 Sept.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
What happened to each town
-
Posta Fibreno 1,021 inhabitants · 0.1 km from the town189 ha reached on 28 Aug19 %
-
Alvito 2,485 inhabitants · 1.6 km from the town148 ha reached on 29 Aug2.9 %
-
93 ha reached on 28 Aug11 %
-
Campoli Appennino 1,614 inhabitants · 3.0 km from the town2 ha0.1 %
Burnt area inside each municipality, from crossing the official 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.
What burned
- Other natural land67 %
- Mixed forest15 %
- Scrub and transitional woodland10 %
- Agricultural areas5.3 %
- Broadleaved forest2.8 %
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) |
|---|---|---|---|---|---|
| 28 Aug | 30.6 °C | 34 % | 34 km/h | 0.6 mm | Moderate 15 |
| 29 Aug | 27.2 °C | 31 % | 30 km/h | 0.0 mm | Moderate 19 |
| 30 Aug | 27.5 °C | 29 % | 22 km/h | 0.0 mm | Moderate 21 |
| 31 Aug after | 27.6 °C | 45 % | 27 km/h | 0.0 mm | Moderate 20 |
| 1 Sept after | 21.5 °C | 61 % | 40 km/h | 3.3 mm | Very low 3 |
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.
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 Vicalvi fire last?
- Copernicus dates it between 28 August 2017 and 30 August 2017: 3 days between the first and last image with fire.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 433 hectares (4.3 km²). Official national figures may differ.
- Which municipalities burned?
- The fire entered 4 municipalities: Posta Fibreno (189 ha, 19 %); Alvito (148 ha, 2.9 %); Vicalvi (93 ha, 11 %); Campoli Appennino (2 ha, 0.1 %).
- Did the fire reach a town?
- The closest fire to a town centre came within 0.1 km of Posta Fibreno. That is the distance to the perimeter or nearest hotspot; it does not mean it entered the houses.
- What was the weather like?
- During the fire the temperature reached 30.6 °C, humidity dropped to 29 % and gusts hit 34 km/h. The fire danger index (FWI) reached 21, 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
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 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.