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Dvorichna fire, 22 September 2025 Дворічанський район · Dvorichna

Out · last detection 23 Sept 2025, 10:05 UTC

The fire started on 22 September 2025 in Dvorichna, Ukraine, and satellites saw it burning for 2 days. Copernicus mapped a burnt perimeter of 251 hectares from satellite imagery, spread across a single municipality.

It is the 148th largest in Kharkiv Oblast since 2016 (of 558 with a page). Number 495 in Ukraine in 2025, of 1359.

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Suggestions: Dvorichna · 2024Dvorichna · 2024Dvorichna · 2024Dvorichna · 2024

Burnt area
251ha
Copernicus perimeter
Duration
2days
22 Sept 2025 – 23 Sept 2025
Municipalities hit
1
districts
Started on
22 Sept
2025
Heat detections
14
in a single hotspot: 132 MW
Danger at start
27
High · FWI index
Average daily power
280MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 22 Sept23 Sept
23 Sept 2025

How it evolved, day by day

22 Sept 2025 · 531 MW · 13 23 Sept 2025 · 29 MW · 1
22 Sept 23 Sept

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
31km/h · peak gust
24%lowest humidity

It had gone one day without rain (1 mm or more) when it started.

This area had burned before

No earlier perimeters overlap this fire since 2016, when the satellite record begins.

What happened to each town

  1. Dvorichna Дворічанський район 10.8 km from the centre where it started
    250 ha reached on 22 Sept
    0.2 %

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

  • Agricultural areas91 %
  • Other natural land9.0 %

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

People and buildings inside the perimeter

GHSL 2025
Built-up area< 0.1 ha
Residents< 20

Inside the perimeter there was no noticeable 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)
22 Sept 30.2 °C 29 % 31 km/h 0.0 mm High 27
23 Sept 30.1 °C 24 % 24 km/h 0.0 mm High 28
24 Sept after 25.7 °C 31 % 44 km/h 0.0 mm Very high 39
25 Sept after 14.9 °C 33 % 43 km/h 0.3 mm High 33
26 Sept after 13.3 °C 38 % 33 km/h 0.0 mm High 24
27 Sept after 16.6 °C 36 % 23 km/h 0.0 mm Moderate 21
28 Sept after 17.2 °C 35 % 22 km/h 0.0 mm High 22
29 Sept after 16.9 °C 32 % 46 km/h 0.0 mm High 33
30 Sept after 12.2 °C 31 % 51 km/h 0.0 mm High 34
1 Oct after 12.6 °C 20 % 48 km/h 0.0 mm High 34
2 Oct after 16.3 °C 24 % 41 km/h 0.4 mm High 31
3 Oct after 17.9 °C 21 % 43 km/h 0.0 mm High 34

Before and after, from space

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

Before · 15 Sept 2025
After · 30 Sept 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 23 September 2025 the air beside the fire reached 16 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak16 µg/m³
Days over the guideline0 days
PM1024 µg/m³
Optical depth0.28
20 Sept22 Sept24 Sept26 Sept
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 · 14Every 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 Dvorichna fire last?
Copernicus dates it between 22 September 2025 and 23 September 2025: 2 days between the first and last image with fire.
How much area did it burn?
The perimeter Copernicus measured from satellite imagery is 251 hectares (2.5 km²). Official national figures may differ.
Which municipalities burned?
The fire only entered Dvorichna (250 ha, 0.2 %).
Did the fire reach a town?
The fire started in Dvorichna and came within 10.8 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 30.2 °C, humidity dropped to 24 % and gusts hit 31 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.

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.

Report an error
What do you think is wrong?

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 from the perimeter: the VIIRS detections inside it did not change them. 14 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.

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.