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Wildfires in Viterbo
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 414 km² of Viterbo at least once. In an average year it detected fire in 36 km², ranking 50th 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 71 km² detected; the quietest was 2018, with 18 km². The 2021–2025 average is within 5% of 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.
July, August and September together hold 49% of the fire-days in the record. The single busiest day was 16 July 2017, with detections in 10 cells.
Ground that burns again
Of the 414 km² with at least one detection, 2.9% had detections in three or more different years.
| Years with a detection | km² | Share |
|---|---|---|
| 1 year | 353 | 85% |
| 2 years | 48 | 12% |
| 3 to 5 years | 9.1 | 2.2% |
| 6 to 10 years | 2.7 | 0.7% |
| 11 years or more | 0.0 | 0.0% |
The half-degree square with the most fire-days is centred at 42.25, 11.75 and holds 47% of the region's fire-days.
The figures
Show the table
| Year | Detected km² | Fire-days |
|---|---|---|
| 2012 | 71 | 83 |
| 2013 | 26 | 29 |
| 2014 | 25 | 28 |
| 2015 | 31 | 35 |
| 2016 | 23 | 27 |
| 2017 | 51 | 58 |
| 2018 | 18 | 20 |
| 2019 | 39 | 44 |
| 2020 | 35 | 41 |
| 2021 | 29 | 33 |
| 2022 | 31 | 38 |
| 2023 | 32 | 37 |
| 2024 | 45 | 51 |
| 2025 | 42 | 50 |
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.