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Wildfires in Hertfordshire
Detected · VIIRS 375 m · Suomi NPP, NOAA-20, NOAA-21 · last 24 hours · updated 2026-10-12 13:28 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 122 km² of Hertfordshire at least once. In an average year it detected fire in 11 km², ranking 29th of 219 regions of United Kingdom.
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 2022, with 17 km² detected; the quietest was 2021, with 3.1 km². The 2021–2025 average is 34% 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.
July, August and September together hold 48% of the fire-days in the record. The single busiest day was 24 September 2016, with detections in 5 cells.
Ground that burns again
Of the 122 km² with at least one detection, 7.6% had detections in three or more different years.
| Years with a detection | km² | Share |
|---|---|---|
| 1 year | 103 | 84% |
| 2 years | 10 | 8.2% |
| 3 to 5 years | 7.7 | 6.3% |
| 6 to 10 years | 1.6 | 1.3% |
| 11 years or more | 0.0 | 0.0% |
The half-degree square with the most fire-days is centred at 51.75, -0.25 and holds 65% of the region's fire-days.
The figures
Show the table
| Year | Detected km² | Fire-days |
|---|---|---|
| 2012 | 12 | 28 |
| 2013 | 10 | 19 |
| 2014 | 17 | 41 |
| 2015 | 6.9 | 14 |
| 2016 | 17 | 35 |
| 2017 | 14 | 23 |
| 2018 | 15 | 25 |
| 2019 | 15 | 28 |
| 2020 | 12 | 16 |
| 2021 | 3.1 | 5 |
| 2022 | 17 | 30 |
| 2023 | 8.4 | 12 |
| 2024 | 5.4 | 7 |
| 2025 | 6.9 | 15 |
Other regions of United Kingdom
- Highland101 km² in an average year
- North Yorkshire74 km² in an average year
- Aberdeenshire29 km² in an average year
- Angus28 km² in an average year
- Hampshire25 km² in an average year
- Northumberland24 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.