Bonorva fire, July 2024 Bonorva, Macomer
The fire started on 29 July 2024 in Bonorva, Italy, and satellites saw it burning for 5 days. Copernicus mapped a burnt perimeter of 219 hectares from satellite imagery, spread across 2 municipalities.
It is the 12th largest in Tàttari/Sassari since 2016 (of 17 with a page). Number 36 in Italy in 2024, of 112.
The power measured by the satellite is low (12.6 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.
Compare with…
- Burnt area
- 219ha
- Copernicus perimeter
- Duration
- 5days
- 29 Jul 2024 – 2 Aug 2024
- Municipalities hit
- 2
- municipalities
- Started on
- 29 Jul
- 2024
- Heat detections
- 4
- in a single hotspot: 13 MW
- Danger at start
- 40
- Very high · FWI index
- Average daily power
- 15MW
- 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 6 days without rain (1 mm or more) when it started. Rain came after the fire: 2.3 mm on 3 Aug.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
What happened to each town
-
178 ha reached on 30 Jul1.2 %
-
Macomer 1,956 inhabitants · 18.6 km from the centre41 ha0.3 %
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 scrub47 %
- Broadleaved forest42 %
- Agricultural areas5.9 %
- Other natural land5.5 %
Natura 2000 protected area affected: 21 %
- ZEPA Piana di Semestene, Bonorva, Macomer e Bortigali ITB023050
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.
Official record
According to CFVA Sardegna, this fire started on 28 July 2024 and burned 241 ha (the satellite measured 219 ha).
- Bonorva Sa Paule 28 July 2024 241 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) |
|---|---|---|---|---|---|
| 29 Jul | 33.9 °C | 22 % | 40 km/h | 0.0 mm | Very high 40 |
| 30 Jul | 34.4 °C | 34 % | 40 km/h | 0.0 mm | Very high 40 |
| 31 Jul | 34.1 °C | 22 % | 35 km/h | 0.0 mm | Very high 40 |
| 1 Aug | 35.7 °C | 18 % | 34 km/h | 0.0 mm | Very high 43 |
| 2 Aug | 36.3 °C | 16 % | 32 km/h | 0.0 mm | Very high 44 |
| 3 Aug after | 30.7 °C | 42 % | 38 km/h | 2.3 mm | Moderate 16 |
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 5 August 2024 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 · 4Every 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 Bonorva fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 29 July 2024 to 2 August 2024 (5 days). The perimeter dates it from 29 July 2024 to 29 July 2024.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 219 hectares (2.2 km²). Official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Bonorva (178 ha, 1.2 %); Macomer (41 ha, 0.3 %).
- Did the fire reach a town?
- The fire started in Bonorva and came within 4.7 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 33.9 °C, humidity dropped to 22 % and gusts hit 40 km/h. The fire danger index (FWI) reached 40, 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.
Report an error
How we know this
- Perimeter: EFFIS (Copernicus), mapped on satellite imagery.
- Dates adjusted with the VIIRS detections inside the perimeter, which said 29 July 2024 to 29 July 2024. 4 Suomi-NPP VIIRS detections on those dates.
- Compared with CFVA Sardegna: 241 official ha against 219 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.