Bakhmut fire, 31 August 2026 Бахмутський район · Bakhmut
The fire started on 31 August 2026 in Bakhmut, Ukraine, and satellites saw it burning for 22 days. Copernicus mapped a burnt perimeter of 623 hectares from satellite imagery, spread across a single municipality.
It is the 79th largest in Donetsk Oblast since 2016 (of 1004 with a page). Number 88 in Ukraine in 2026, of 984.
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- Burnt area
- 623ha
- Copernicus perimeter
- Duration
- ≈ 22days
- 31 Aug 2026 – 21 Sept 2026
- Municipalities hit
- 1
- districts
- Started on
- 31 Aug
- 2026
- Heat detections
- 13
- in a single hotspot: 43 MW
- Danger at start
- 28
- High · FWI index
- Average daily power
- 47MW
- 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 2 days without rain (1 mm or more) when it started. Rain came after the fire: 5.3 mm on 6 Sept.
This area had burned before
60% of the perimeter overlaps earlier fires recorded since 2016: 2 ha in 2022, 106 ha in 2023, 173 ha in 2024, 181 ha in 2025. Part of it burned more than once, so the yearly figures add up to more than the 371 ha that had burned before.
- 147 ha Bakhmut fire, July 2025 707 ha in total; the hectares shown are those it shares with this fire
- 80 ha Bakhmut fire, August 2024 142 ha in total; the hectares shown are those it shares with this fire
- 21 ha Bakhmut fire, February 2024 294 ha in total; the hectares shown are those it shares with this fire
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
Kyiv boundary: geoBoundaries · OpenStreetMap, Wambacher · © OpenStreetMap contributors (ODbL 1.0).
Paris boundary: geoBoundaries · Institut national de l'information géographique et forestière (IGN-F) (Etalab Open License 2.0).
Madrid boundary: geoBoundaries · Open Data ESRI, IGN Central Registry of Cartography Area (CC BY 4.0).
This compares size, not location: both shapes are at the same scale, north up, centred on each other.
What happened to each town
-
626 ha reached on 31 Aug0.4 %
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 land44 %
- Agricultural areas42 %
- Mixed forest13 %
- Other land cover0.6 %
- Artificial surfaces0.6 %
Land cover inside the perimeter as reported by Copernicus EFFIS (outside the Corine Land Cover area).
People and buildings inside the perimeter
GHSL 2025Inside the perimeter there were about 0.33 hectares of built-up land and almost nobody lived there (GHSL 2025, satellite-based estimate).
This is an estimate on 100 m cells, made from satellite imagery and census data: it does not mean that homes burned or that anyone was harmed. The perimeter also contains land that never burned. The GHSL 2025 epoch is a projection made from 2020 and earlier data.
Source: Global Human Settlement Layer (GHS-BUILT-S and GHS-POP R2023A), European Commission Joint Research Centre (JRC), © European Union, CC BY 4.0. Sum inside the perimeter computed by WorldFires. human-settlement.emergency.copernicus.eu
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) |
|---|---|---|---|---|---|
| 31 Aug | 27.5 °C | 17 % | 23 km/h | 0.0 mm | High 28 |
| 1 Sept | 28.5 °C | 15 % | 22 km/h | 0.0 mm | High 30 |
| 2 Sept | 30.1 °C | 22 % | 18 km/h | 0.0 mm | High 30 |
| 3 Sept | 27.4 °C | 34 % | 26 km/h | 0.0 mm | High 28 |
| 4 Sept | 27.5 °C | 30 % | 22 km/h | 0.0 mm | High 27 |
| 5 Sept | 29.3 °C | 31 % | 52 km/h | 0.1 mm | Very high 39 |
| 6 Sept | 23.1 °C | 38 % | 33 km/h | 5.3 mm | Very low 5 |
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 2 September 2026 the air beside the fire reached 18 µg/m³ of PM2.5, but no daily average passed the WHO 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 · 13Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 2,641 haLyman Лиманський район26 April 2022 · 8 days · 22 km away
- 1,902 haLyman Лиманський район1 April 2024 · 12 days · 22 km away
- 1,488 haPopasna Попаснянський район8 July 2025 · 4 days · 23 km away
- 1,980 haNovoaidar Новоайдарський районFebruary 2024 · 5 days · 35 km away
- 4,293 haPopasna Попаснянський районOctober 2020 · 7 days · 36 km away
- 1,427 haPopasna Попаснянський район21 March 2022 · 6 days · 36 km away
Frequently asked questions
- How long did the Bakhmut fire last?
- The official perimeter only gives the start date (31 August 2026). The end comes from the heat detections inside the perimeter: it burned until 21 September 2026 (22 days from 31 August 2026), the last day with detections before more than 10 days in a row without any, so it is approximate.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 623 hectares (6.2 km²). Official national figures may differ.
- Which municipalities burned?
- The fire only entered Bakhmut (626 ha, 0.4 %).
- Did the fire reach a town?
- The fire started in Bakhmut and came within 1.8 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 27.5 °C, humidity dropped to 17 % and gusts hit 23 km/h. The fire danger index (FWI) reached 28, class High.
- Where does this data come from?
- From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Ukraine (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: 101 · 112 · 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.
- The official perimeter has no end date: the end is the last day with VIIRS detections inside the perimeter before a gap of more than 10 days (150 days at most), so it is approximate. 13 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.
- Built-up area and population come from the JRC Global Human Settlement Layer (epoch 2025, 100 m cells), summed inside the perimeter: an estimate of what was there, not a damage count.
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 ADM2 (Public Domain). 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.