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Wildfires in Siena
Detected · VIIRS 375 m · Suomi NPP, NOAA-20, NOAA-21 · last 24 hours · updated 2026-10-12 08:29 UTC
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Fire history, 2012–2025
Detected · VIIRS S-NPP 375 m · 0.01° cells (~1.1 km) · complete years 2012–2025 · built 2026-09-23
Between 2012 and 2025, VIIRS detected fire in 108 km² of Siena at least once. In an average year it detected fire in 9.9 km², ranking 91st of 110 regions of Italy.
Year by year
Detected area per year, km². Area of 0.01° cells with at least one detection in the year.
The busiest year was 2012, with 23 km² detected; the quietest was 2014, with 3.6 km². The 2021–2025 average is 7.5% lower than the 2012–2016 average.
Through the year
Share of all fire-days 2012–2025 by month. A fire-day is one cell with a detection on one day.
June, July and August together hold 53% of the fire-days in the record. The single busiest day was 11 August 2012, with detections in 5 cells.
Ground that burns again
Of the 108 km² with at least one detection, 6.7% had detections in three or more different years.
| Years with a detection | km² | Share |
|---|---|---|
| 1 year | 94 | 87% |
| 2 years | 6.3 | 5.9% |
| 3 to 5 years | 5.4 | 5.0% |
| 6 to 10 years | 1.8 | 1.7% |
| 11 years or more | 0.0 | 0.0% |
The half-degree square with the most fire-days is centred at 43.25, 11.25 and holds 56% of the region's fire-days.
The figures
Show the table
| Year | Detected km² | Fire-days |
|---|---|---|
| 2012 | 23 | 28 |
| 2013 | 8.1 | 10 |
| 2014 | 3.6 | 4 |
| 2015 | 6.3 | 7 |
| 2016 | 7.2 | 8 |
| 2017 | 20 | 22 |
| 2018 | 8.1 | 11 |
| 2019 | 12 | 16 |
| 2020 | 6.3 | 8 |
| 2021 | 9.1 | 12 |
| 2022 | 9.9 | 12 |
| 2023 | 6.3 | 8 |
| 2024 | 8.1 | 9 |
| 2025 | 11 | 12 |
Other regions of Italy
- Foggia847 km² in an average year
- Palermo608 km² in an average year
- Agrigento590 km² in an average year
- Catania492 km² in an average year
- Caltanissetta460 km² in an average year
- Cosenza424 km² in an average year
- How these figures are madeDetected area, cells, and the single-satellite record.
Detected area counts every 0.01° cell with at least one VIIRS detection, so a small fire counts as a whole cell and a fire missed by cloud or between passes is absent. Borders: Natural Earth 1:10m. 2012 begins on 20 January.