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Lagansky District fire, 23 July 2025 Russia

Out · last detection 28 Jul 2025, 23:27 UTC

The fire started on 23 July 2025 in Lagansky District, Russia, and satellites saw it burning for 5 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,367 hectares from heat detections, spread across a single municipality.

Number 163 in Russia in 2025, of 249.

Burnt area
4,367ha
GWIS perimeter (Copernicus)
Duration
5days
23 Jul 2025 – 27 Jul 2025
Municipalities hit
0
districts
Started on
23 Jul
2025
Heat detections
719
in a single hotspot: 622 MW
Danger at start
6
Low · FWI index
Average daily power
3.4GW
detected power per day, on average

Where it burned

28 Jul 2025
HOTSPOTS BY DAY 23 Jul27 Jul

How it evolved, day by day

23 Jul 2025 · 8,947 MW · 200 24 Jul 2025 · 8,013 MW · 193 25 Jul 2025 · 1,991 MW · 120 26 Jul 2025 · 992 MW · 68 27 Jul 2025 · 172 MW · 46 28 Jul 2025 · 129 MW · 29
23 Jul 24 Jul 25 Jul 26 Jul 27 Jul 28 Jul

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

The weather it burned in

35°high
59km/h · peak gust
28%lowest humidity

It had gone 27 days without rain (1 mm or more) when it started.

This area had burned before

80% of the perimeter overlaps earlier fires recorded since 2016: 59 ha in 2018, 3,284 ha in 2019, 3,461 ha in 2022, 51 ha in 2023. Part of it burned more than once, so the yearly figures add up to more than the 3,501 ha that had burned before.

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 Jul 30.8 °C 53 % 28 km/h 9.3 mm Low 6
23 Jul 31.4 °C 45 % 24 km/h 0.0 mm Moderate 15
24 Jul 34.7 °C 35 % 35 km/h 0.0 mm High 30
25 Jul 33.4 °C 31 % 37 km/h 0.0 mm High 35
26 Jul 33.4 °C 28 % 22 km/h 0.0 mm High 32
27 Jul 32.1 °C 38 % 59 km/h 2.4 mm High 30
28 Jul after 26.8 °C 41 % 43 km/h 0.3 mm High 30
29 Jul after 29.7 °C 36 % 26 km/h 0.0 mm High 24
30 Jul after 30.8 °C 32 % 27 km/h 0.0 mm High 28
31 Jul after 31.0 °C 39 % 31 km/h 0.0 mm High 30
1 Aug after 30.6 °C 48 % 44 km/h 0.0 mm High 35
2 Aug after 30.0 °C 53 % 44 km/h 0.0 mm High 32
3 Aug after 31.8 °C 50 % 51 km/h 0.0 mm High 37
4 Aug after 30.4 °C 56 % 48 km/h 0.2 mm High 33
5 Aug after 31.6 °C 60 % 38 km/h 0.0 mm High 25
6 Aug after 31.0 °C 52 % 29 km/h 0.0 mm High 22

Before and after, from space

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

Before · 16 Jul 2025
After · 3 Aug 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 28 July 2025 the air beside the fire reached 54 µg/m³ of PM2.5. That day averaged 25: 1.7 times the WHO daily guideline (15).

PM2.5 peak54 µg/m³
Days over the guideline5 days
PM1054 µg/m³
Optical depth0.77
21222324252627282930
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 · 719Every 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 Russia ›

Frequently asked questions

How long did the Lagansky District fire last?
GWIS (Copernicus) dates it between 23 July 2025 and 27 July 2025: 5 days between the first and last heat detection of the perimeter.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 4,367 hectares (43.7 km²). It is an estimate: official national figures may differ.
What was the weather like?
During the fire the temperature reached 34.7 °C, humidity dropped to 28 % and gusts hit 59 km/h. The fire danger index (FWI) reached 35, class High.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Russia (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: 112

Satellite cross-check

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 112.

Where this data comes from

The perimeter comes from the Copernicus Global Wildfire Information System (GWIS), which rebuilds it from MODIS and VIIRS heat detections and publishes it under CC BY 4.0. It is not measured on imagery as in Europe, so it is an estimate. 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 (Open Data Commons Open Database License 1.0). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ from each country’s official figure.