Orsomarso fire, August 2021 Orsomarso, Verbicaro
The fire started on 10 August 2021 in Orsomarso, Italy, and satellites saw it burning for 2 days. Copernicus mapped a burnt perimeter of 120 hectares from satellite imagery, spread across 2 municipalities.
It is the 113th largest in Cosenza since 2016 (of 145 with a page). Number 238 in Italy in 2021, of 291.
The power measured by the satellite is low (12.3 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
- 120ha
- Copernicus perimeter
- Duration
- 2days
- 10 Aug 2021 – 11 Aug 2021
- Municipalities hit
- 2
- municipalities
- Started on
- 10 Aug
- 2021
- Heat detections
- 5
- in a single hotspot: 12 MW
- Danger at start
- 31
- High · FWI index
- Average daily power
- 18MW
- 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 20 days without rain (1 mm or more) when it started. Rain came after the fire: 1.0 mm on 16 Aug.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
What happened to each town
-
119 ha reached on 10 Aug1.3 %
-
Verbicaro 2,631 inhabitants · 2.3 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
- Other natural land60 %
- Broadleaved forest29 %
- Agricultural areas6.7 %
- Scrub and transitional woodland4.2 %
Natura 2000 protected area affected: 100 %
- ZEPA Pollino e Orsomarso IT9310303
- LIC Valle del Fiume Argentino IT9310023
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) |
|---|---|---|---|---|---|
| 10 Aug | 33.3 °C | 25 % | 35 km/h | 0.0 mm | High 31 |
| 11 Aug | 32.6 °C | 25 % | 40 km/h | 0.0 mm | High 30 |
| 12 Aug after | 31.0 °C | 38 % | 30 km/h | 0.0 mm | High 25 |
| 13 Aug after | 30.2 °C | 38 % | 28 km/h | 0.3 mm | High 25 |
| 14 Aug after | 30.3 °C | 35 % | 30 km/h | 0.0 mm | High 25 |
| 15 Aug after | 29.8 °C | 36 % | 30 km/h | 0.0 mm | High 27 |
| 16 Aug after | 28.3 °C | 52 % | 38 km/h | 1.0 mm | Moderate 15 |
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 11 August 2021 the air beside the fire reached 47 µg/m³ of PM2.5. That day averaged 29: 1.9 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 · 5Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 609 haSanta Domenica TalaoSeptember 2025 · 2 days · 9 km away
- 538 haSanta Domenica TalaoAugust 2023 · 5 days · 10 km away
- 643 haSanta Domenica TalaoJuly 2017 · 8 days · 11 km away
- 631 haMorano CalabroJuly 2026 · 7 days · 20 km away
- 518 haTortora16 July 2017 · 4 days · 22 km away
- 1,617 haCastrovillariJuly 2026 · 4 days · 28 km away
Frequently asked questions
- How long did the Orsomarso fire last?
- Copernicus dates it between 10 August 2021 and 11 August 2021: 2 days between the first and last image with fire.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 120 hectares (1.2 km²). Official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Orsomarso (119 ha, 1.3 %); Verbicaro (0 ha, 0.0 %).
- Did the fire reach a town?
- The fire started in Orsomarso and came within 1.2 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 33.3 °C, humidity dropped to 25 % and gusts hit 40 km/h. The fire danger index (FWI) reached 31, 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. 5 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.