How long did the Troitske fire last?

Copernicus dates it between 24 July 2024 and 25 July 2024: 2 days between the first and last image with fire.

How much area did it burn?

The perimeter Copernicus measured from satellite imagery is 166 hectares (1.7 km²). Official national figures may differ.

Which municipalities burned?

The fire entered 2 municipalities: Troitske (132 ha, 0.1 %); Kupiansk (34 ha, 0.0 %).

Did the fire reach a town?

The fire came within 30.4 km of the centre of Kupiansk, 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 28.4 °C, humidity dropped to 30 % and gusts hit 37 km/h. The fire danger index (FWI) reached 27, 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.

UA · Ukraine · 2024-07-24 → 2024-07-25

Troitske fire, July 2024 Троїцький район · Troitske, Kupiansk

Out · last measured on 25 Jul 2024

The fire started on 24 July 2024 in Troitske, Ukraine, and satellites saw it burning for 2 days. Copernicus mapped a burnt perimeter of 166 hectares from satellite imagery, spread across 2 municipalities.

It is the 537th largest in Luhansk Oblast since 2016 (of 909 with a page). Number 1206 in Ukraine in 2024, of 2092.

Compare with…

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

We have the Copernicus perimeter for this fire, but the VIIRS sensors did not capture it in enough detail: no day-by-day evolution, but the split by municipality is there.

Burnt area: 166ha; Copernicus perimeter
Duration: 2days; 24 Jul 2024 – 25 Jul 2024
Municipalities hit: 2; districts
Started on: 24 Jul; 2024
Danger at start: 26; High · FWI index

The weather it burned in

28°high

37km/h · peak gust

30%lowest humidity

It had gone 0 days without rain (1 mm or more) when it started. Rain came after the fire: 1.7 mm on 29 Jul.

This area had burned before

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

What happened to each town

Troitske Троїцький район 20,833 inhabitants · 30.7 km from the centre where it started

132 ha

0.1 %
Kupiansk Куп'янський район 137,200 inhabitants · 30.4 km from the centre

34 ha

0.0 %

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 land62 %
Agricultural areas21 %
Mixed forest16 %
Artificial surfaces0.6 %

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)
24 Jul	25.2 °C	32 %	37 km/h	0.0 mm	High 26
25 Jul	28.4 °C	30 %	24 km/h	0.0 mm	High 27
26 Jul after	29.3 °C	25 %	32 km/h	0.0 mm	High 33
27 Jul after	28.9 °C	24 %	19 km/h	0.0 mm	High 29
28 Jul after	32.2 °C	24 %	27 km/h	0.0 mm	High 36
29 Jul after	31.1 °C	37 %	47 km/h	1.7 mm	High 24

Before and after, from space

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

↔

Before · 17 Jul 2024

After · 1 Aug 2024

Before After

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 28 July 2024 the air beside the fire reached 8 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak8 µg/m³

Days over the guideline0 days

PM109 µg/m³

Optical depth0.44

22232425262728

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)

Other fires nearby

All fires in Ukraine ›

Frequently asked questions

How long did the Troitske fire last?: Copernicus dates it between 24 July 2024 and 25 July 2024: 2 days between the first and last image with fire.
How much area did it burn?: The perimeter Copernicus measured from satellite imagery is 166 hectares (1.7 km²). Official national figures may differ.
Which municipalities burned?: The fire entered 2 municipalities: Troitske (132 ha, 0.1 %); Kupiansk (34 ha, 0.0 %).
Did the fire reach a town?: The fire came within 30.4 km of the centre of Kupiansk, 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 28.4 °C, humidity dropped to 30 % and gusts hit 37 km/h. The fire danger index (FWI) reached 27, 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 ›

ДСНС · State Emergency Service ↗

Satellite cross-check

NASA FIRMS ↗
EFFIS · Copernicus ↗

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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What do you think is wrong?

Dates or duration Place or towns Burned area Name It was not a wildfire Same fire as another page Something else

What really happened?

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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. No 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.

Where it burned