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Wildfires in Iwate Prefecture
Detected · VIIRS 375 m · Suomi NPP, NOAA-20, NOAA-21 · last 24 hours · updated 2026-10-11 08:31 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 214 km² of Iwate Prefecture at least once. In an average year it detected fire in 24 km², ranking 26th of 47 regions of Japan.
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 2025, with 69 km² detected; the quietest was 2012, with 8.6 km². The 2021–2025 average is 213% higher 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.
August, September and October together hold 34% of the fire-days in the record. The single busiest day was 28 September 2025, with detections in 16 cells.
Ground that burns again
Of the 214 km² with at least one detection, 12% had detections in three or more different years.
| Years with a detection | km² | Share |
|---|---|---|
| 1 year | 166 | 78% |
| 2 years | 23 | 11% |
| 3 to 5 years | 18 | 8.5% |
| 6 to 10 years | 2.9 | 1.4% |
| 11 years or more | 3.9 | 1.8% |
The half-degree square with the most fire-days is centred at 39.25, 141.75 and holds 72% of the region's fire-days.
The figures
Show the table
| Year | Detected km² | Fire-days |
|---|---|---|
| 2012 | 8.6 | 58 |
| 2013 | 12 | 68 |
| 2014 | 14 | 90 |
| 2015 | 21 | 90 |
| 2016 | 9.6 | 62 |
| 2017 | 17 | 75 |
| 2018 | 19 | 83 |
| 2019 | 22 | 91 |
| 2020 | 15 | 81 |
| 2021 | 38 | 118 |
| 2022 | 35 | 102 |
| 2023 | 33 | 107 |
| 2024 | 28 | 107 |
| 2025 | 69 | 153 |
Other regions of Japan
- Kumamoto Prefecture142 km² in an average year
- Fukuoka Prefecture100 km² in an average year
- Hokkaidō96 km² in an average year
- Aichi Prefecture94 km² in an average year
- Chiba Prefecture77 km² in an average year
- Ōita Prefecture72 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.
Nearby regions
- Miyagi Prefecture119 km
- Aomori Prefecture166 km
- Hokkaidō344 km
- Tochigi Prefecture377 km
- Ibaraki Prefecture399 km
- Saitama Prefecture399 km