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Bakhmut fire, June 2025 Бахмутський район · Bakhmut, Perevalsk

Out · last detection 4 Jun 2025, 09:44 UTC

The fire started on 3 June 2025 in Bakhmut, Ukraine, and satellites saw it burning for 2 days. Copernicus mapped a burnt perimeter of 137 hectares from satellite imagery, spread across 2 municipalities.

It is the 687th largest in Donetsk Oblast since 2016 (of 1004 with a page). Number 979 in Ukraine in 2025, of 1359.

The power measured by the satellite is low (8.3 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.

Compare with…
Burnt area
137ha
Copernicus perimeter
Duration
2days
3 Jun 2025 – 4 Jun 2025
Municipalities hit
2
districts
Started on
3 Jun
2025
Heat detections
3
in a single hotspot: 8 MW
Danger at start
13
Moderate · FWI index
Average daily power
6MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 3 Jun4 Jun
4 Jun 2025

How it evolved, day by day

3 Jun 2025 · 2 MW · 2 4 Jun 2025 · 8 MW · 1
3 Jun 4 Jun

Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.

The weather it burned in

30°high
56km/h · peak gust
23%lowest humidity

It had gone 2 days without rain (1 mm or more) when it started. Rain came after the fire: 1.4 mm on 9 Jun.

This area had burned before

9% of the perimeter overlaps earlier fires recorded since 2016: 8 ha in 2023, 5 ha in 2024.

What happened to each town

  1. Bakhmut Бахмутський район 108,637 inhabitants · 66.4 km from the centre where it started
    73 ha reached on 3 Jun
    0.0 %
  2. Perevalsk Перевальський район 69,738 inhabitants · 19.5 km from the centre
    64 ha reached on 4 Jun
    0.1 %

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 land99 %
  • Mixed forest0.7 %

Land cover inside the perimeter as reported by Copernicus EFFIS (outside the Corine Land Cover area).

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)
4 Jun 30.0 °C 23 % 56 km/h 3.9 mm Moderate 13
5 Jun after 25.6 °C 22 % 40 km/h 0.0 mm Moderate 19
6 Jun after 28.8 °C 16 % 24 km/h 0.0 mm Moderate 21
7 Jun after 32.1 °C 28 % 27 km/h 0.3 mm High 26
8 Jun after 34.3 °C 16 % 16 km/h 0.0 mm High 26
9 Jun after 36.7 °C 18 % 20 km/h 1.4 mm High 24

Before and after, from space

Drag the line to compare the same ground before the fire and after it.

Before · 27 May 2025
After · 11 Jun 2025

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 · Copernicus

On 7 June 2025 the air beside the fire reached 45 µg/m³ of PM2.5. That day averaged 22: 1.4 times the WHO daily guideline (15).

PM2.5 peak45 µg/m³
Days over the guideline1 day
PM1057 µg/m³
Optical depth0.60
234567
Good Fair Moderate Poor Very poor Extremely poor

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 · 3Every satellite heat detection, one by one, with time, satellite, power and coordinates.
⬇ Download CSV Times in UTC. Each detection is a 375 m pixel: a large fire yields hundreds per pass.
Date and timeSatelliteFRP (MW)LatLon

Other fires nearby

All fires in Ukraine ›

Frequently asked questions

How long did the Bakhmut fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 3 June 2025 to 4 June 2025 (2 days). The perimeter dates it from 4 June 2025 to 4 June 2025.
How much area did it burn?
The perimeter Copernicus measured from satellite imagery is 137 hectares (1.4 km²). Official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Bakhmut (73 ha, 0.0 %); Perevalsk (64 ha, 0.1 %).
Did the fire reach a town?
The fire came within 19.5 km of the centre of Perevalsk, the closest of the areas it touched. 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 30.0 °C, humidity dropped to 23 % and gusts hit 56 km/h. The fire danger index (FWI) reached 13, class Moderate.
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.

RSS Changes to this page

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.

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We will only use your email to reply about this report. Privacy. This is not an emergency service: if there is a fire now, call 101 · 112.

How we know this
  • Perimeter: EFFIS (Copernicus), mapped on satellite imagery.
  • Dates adjusted with the VIIRS detections inside the perimeter, which said 4 June 2025 to 4 June 2025. 3 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.

How we build fire pages: methodology ›

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.