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Dvorichna fire, 22 September 2023 Дворічанський район · Dvorichna

Out · last detection 22 Sept 2023, 10:28 UTC

The fire started on 22 September 2023 in Dvorichna, Ukraine, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 112 hectares from satellite imagery, spread across a single municipality.

It is the 475th largest in Kharkiv Oblast since 2016 (of 558 with a page). Number 439 in Ukraine in 2023, of 491.

The power measured by the satellite is low (7.3 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.

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

Burnt area
112ha
Copernicus perimeter
Duration
1day
22 Sept 2023 – 22 Sept 2023
Municipalities hit
1
districts
Started on
22 Sept
2023
Heat detections
1
in a single hotspot: 7 MW
Danger at start
36
High · FWI index
Average daily power
7MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 22 Sept22 Sept

How it evolved, day by day

22 Sept 2023 · 7 MW · 1

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

The weather it burned in

27°high
46km/h · peak gust
29%lowest humidity

It had gone 19 days 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 4.7 km from the centre where it started
    111 ha reached on 22 Sept
    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 land45 %
  • Mixed forest36 %
  • Agricultural areas20 %

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)
22 Sept 26.8 °C 29 % 46 km/h 0.0 mm High 36
23 Sept after 26.9 °C 22 % 42 km/h 0.0 mm High 35
24 Sept after 28.0 °C 21 % 39 km/h 0.0 mm High 35
25 Sept after 27.3 °C 24 % 23 km/h 0.0 mm High 28
26 Sept after 27.5 °C 28 % 23 km/h 0.1 mm High 31
27 Sept after 27.7 °C 29 % 24 km/h 0.0 mm High 31
28 Sept after 26.4 °C 31 % 28 km/h 0.0 mm High 31
29 Sept after 25.8 °C 28 % 21 km/h 0.0 mm High 28
30 Sept after 26.6 °C 26 % 14 km/h 0.0 mm High 28
1 Oct after 26.0 °C 32 % 20 km/h 0.0 mm High 28
2 Oct after 17.1 °C 62 % 43 km/h 0.4 mm High 22

Before and after, from space

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

Before · 15 Sept 2023
After · 29 Sept 2023

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 25 September 2023 the air beside the fire reached 18 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak18 µg/m³
Days over the guideline0 days
PM1045 µg/m³
Optical depth0.11
202122232425
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 · 1Every 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 2023 and 22 September 2023: 1 day between the first and last image with fire.
How much area did it burn?
The perimeter Copernicus measured from satellite imagery is 112 hectares (1.1 km²). Official national figures may differ.
Which municipalities burned?
The fire only entered Dvorichna (111 ha, 0.1 %).
Did the fire reach a town?
The fire started in Dvorichna and came within 4.7 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 26.8 °C, humidity dropped to 29 % and gusts hit 46 km/h. The fire danger index (FWI) reached 36, 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
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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 from the perimeter: the VIIRS detections inside it did not change them. One Suomi-NPP VIIRS detection 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.