Itri fire, 4 August 2021 Itri
The fire started on 4 August 2021 in Itri, Italy, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 111 hectares from satellite imagery, spread across a single municipality.
It is the 46th largest in Latina since 2016 (of 52 with a page). Number 263 in Italy in 2021, of 291.
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
- 111ha
- Copernicus perimeter
- Duration
- 1day
- 4 Aug 2021 – 4 Aug 2021
- Municipalities hit
- 1
- municipalities
- Started on
- 4 Aug
- 2021
- Danger at start
- 28
- High · FWI index
- Natura 2000
- 67%
- of the perimeter is protected land
Where it burned
The weather it burned in
It had gone 16 days without rain (1 mm or more) when it started.
This area had burned before
19% of the perimeter overlaps earlier fires recorded since 2016: 21 ha in 2017.
What happened to each town
-
111 ha1.1 %
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 land48 %
- Agricultural areas47 %
- Scrub and transitional woodland5.5 %
Natura 2000 protected area affected: 67 %
- 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) |
|---|---|---|---|---|---|
| 4 Aug | 31.2 °C | 33 % | 39 km/h | 0.0 mm | High 28 |
| 5 Aug after | 27.7 °C | 47 % | 46 km/h | 0.2 mm | High 27 |
| 6 Aug after | 29.5 °C | 44 % | 40 km/h | 0.0 mm | High 26 |
| 7 Aug after | 30.2 °C | 41 % | 31 km/h | 0.0 mm | High 24 |
| 8 Aug after | 30.9 °C | 42 % | 35 km/h | 0.0 mm | High 25 |
| 9 Aug after | 31.8 °C | 50 % | 34 km/h | 0.0 mm | High 24 |
| 10 Aug after | 34.0 °C | 36 % | 29 km/h | 0.0 mm | High 26 |
| 11 Aug after | 36.0 °C | 28 % | 36 km/h | 0.0 mm | High 34 |
| 12 Aug after | 35.2 °C | 35 % | 35 km/h | 0.0 mm | High 32 |
| 13 Aug after | 35.0 °C | 33 % | 31 km/h | 0.2 mm | High 32 |
| 14 Aug after | 34.7 °C | 34 % | 32 km/h | 0.0 mm | High 33 |
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 4 August 2021 the air beside the fire reached 29 µg/m³ of PM2.5. That day averaged 16: 1.1 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)
Other fires nearby
Frequently asked questions
- How long did the Itri fire last?
- Copernicus dates it between 4 August 2021 and 4 August 2021: 1 day between the first and last image with fire.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 111 hectares (1.1 km²). Official national figures may differ.
- Which municipalities burned?
- The fire only entered Itri (111 ha, 1.1 %).
- Did the fire reach a town?
- The closest fire to a town centre came within 5.1 km of Itri. 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 31.2 °C, humidity dropped to 33 % and gusts hit 39 km/h. The fire danger index (FWI) reached 28, 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.