Burned area
satellite only175ha
Perimeter published by EFFIS (Copernicus).
- Source
- EFFIS (Copernicus)
- Date
- perimeter revised on 6 September 2023
+− cross-check
No official record is matched to this page to compare it with.
UA · Ukraine · –
Svatove fire, August 2023 Сватівський район · Svatove
Out · last detection 1 Sept 2023, 10:22 UTC
The fire started on 24 August 2023 in Svatove, Ukraine, and satellites saw it burning for 9 days. Copernicus mapped a burnt perimeter of 175 hectares from satellite imagery, spread across a single municipality.
It is the 509th largest in Luhansk Oblast since 2016 (of 909 with a page). Number 267 in Ukraine in 2023, of 491.
The power measured by the satellite is low (16.1 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.
Use this data
Compare with…
Use this data
Fire page data · version 2026-10-24matches the official recordwith caveatssatellite onlymodel
When copying, the sentence is
Tick the figures you want: they make up the lede and the CSV.
Duration by satellite
satellite only9days
24 Aug 2023 to 1 Sept 2023: first and last day with fire on the page.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 1 Sept 2023, 10:22 UTC
+− cross-check
Satellites pass a few times a day and cloud or smoke can hide the fire: a lack of detections is not an official extinction. Each country’s emergency service declares a fire contained or out.
Start
satellite only24 Aug 2023
First day with fire seen by the satellites or the perimeter.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 24 Aug 2023
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only3
VIIRS detections at 375 m. Most intense hotspot: 16 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 24 Aug 2023 – 1 Sept 2023
+− cross-check
There is no official record to compare with. Each hotspot is a pixel detected in one satellite pass, not a separate fire.
The worst day
satellite only16MW
Total radiative power on 31 August 2023; hotspots that day: 1.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 31 Aug 2023
+− cross-check
Fire radiative power (FRP) measures the energy the fire gives off when the satellite passes. Added up by day, it compares intensity, not area.
Danger at the start
model17.6FWI · moderate
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 1.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 24 Aug 2023, local noon
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
This is an index computed from weather model data, not a measurement of the fire nor an official warning. Danger warnings are issued by each country’s authority. Emergency number and official warnings
Weather during the fire
model31.3°C · 26% RH
High of 31.3 °C and minimum humidity of 26% on 1 September 2023; gusts of 37 km/h on 27 August 2023.
- Source
- weather model at the fire’s grid cell
- Date
- 24 Aug 2023 – 1 Sept 2023
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
These are model values for a cell of about 25 km, not from a weather station: they may differ from what was measured on the ground.
This page’s change log has been kept since 24 October 2026: every night what it publishes is compared and the difference is logged. Anything earlier is reconstructed from each source’s date and marked as reconstructed.
Show
-
· reconstructed weatherWeather and FWI computed from the ERA5 reanalysis
-
· reconstructed perimeterEFFIS (Copernicus) revises the perimeter
What was saved on 24 October 2026
Every night a snapshot of what the page shows is saved. If anything changes, it appears in the list as a log entry.
- Area
- 175 ha
- Dates
- 24 Aug 2023 – 1 Sept 2023
- Name
- Svatove
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/svatove-2023-08?v=2026-10-24A version keeps the area, dates, name and official record; the area as it was logged (changes under 2% are not logged). The map, hotspots and weather always show today’s data.
Citation
A lede of about 60 words figures only, no adjectives
CSV for this fire svatove-2023-08.csv · daily, no individual hotspots
| fecha | focos_viirs | frp_mw | tmax_c | tmin_c | hr_min_pct | viento_max_kmh | racha_max_kmh | precip_mm | fwi | clase_fwi | dentro_del_incendio |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023-08-24 | 1 | 9 | 24.8 | 13 | 38 | 16.6 | 34.2 | 0 | 17.6 | moderado | 1 |
| 2023-08-25 | 0 | 0 | 24.6 | 13.2 | 46 | 14.4 | 36 | 1.1 | 10.8 | bajo | 1 |
| 2023-08-26 | 0 | 0 | 25.3 | 10.8 | 39 | 10.4 | 20.2 | 0 | 14.4 | moderado | 1 |
| 2023-08-27 | 0 | 0 | 28.8 | 16.5 | 55 | 18.2 | 36.7 | 1 | 12.8 | moderado | 1 |
| 2023-08-28 | 0 | 0 | 29.6 | 16.5 | 44 | 13.4 | 29.5 | 0 | 16.5 | moderado | 1 |
| 2023-08-29 | 0 | 0 | 25.5 | 15.6 | 37 | 14.7 | 30.6 | 0 | 19.5 | moderado | 1 |
| 2023-08-30 | 0 | 0 | 26.7 | 12.5 | 29 | 11.2 | 25.9 | 0 | 21.4 | alto | 1 |
| 2023-08-31 | 1 | 16 | 29.7 | 11.6 | 20 | 14.9 | 31.7 | 0 | 30.2 | alto | 1 |
| 2023-09-01 | 1 | 2 | 31.3 | 13.1 | 26 | 13.6 | 30.2 | 0.5 | 29.9 | alto | 1 |
| 2023-09-02 | 0 | 0 | 24.5 | 16.3 | 57 | 16.8 | 35.3 | 0 | 20.3 | moderado | 0 |
| 2023-09-03 | 0 | 0 | 26.3 | 13.7 | 43 | 16.6 | 29.9 | 0 | 20.8 | moderado | 0 |
| 2023-09-04 | 0 | 0 | 27.5 | 15.1 | 40 | 18.7 | 31.3 | 0.1 | 23.7 | alto | 0 |
| 2023-09-05 | 0 | 0 | 26.5 | 14.6 | 33 | 11.6 | 26.6 | 0 | 22 | alto | 0 |
| 2023-09-06 | 0 | 0 | 26.5 | 12.2 | 39 | 12.3 | 27.7 | 0 | 22.8 | alto | 0 |
| 2023-09-07 | 0 | 0 | 22.5 | 10.4 | 30 | 20.2 | 41.8 | 0 | 28.3 | alto | 0 |
| 2023-09-08 | 0 | 0 | 20.6 | 6.6 | 33 | 21.9 | 44.3 | 0 | 29.9 | alto | 0 |
| 2023-09-09 | 0 | 0 | 14.9 | 9.3 | 42 | 25.3 | 47.9 | 0 | 28.7 | alto | 0 |
| 2023-09-10 | 0 | 0 | 19.9 | 9.4 | 49 | 21.6 | 42.8 | 0 | 24.5 | alto | 0 |
| 2023-09-11 | 0 | 0 | 21.3 | 10.5 | 45 | 12.6 | 27.4 | 0 | 19.6 | moderado | 0 |
It is generated in your browser from this page’s data: one file per fire, aggregated by day and without individual hotspots.
Live widget for your story
It updates itself while the fire is still active and links to this page. Free, with the attribution shown at the bottom.
Sources for this page: EFFIS (Copernicus), NASA FIRMS (VIIRS), ERA5 (ECMWF/Copernicus C3S) · Open-Meteo.com (CC BY 4.0). Open-Meteo.com · How we build fire pages: methodology
- Burnt area
- 175ha
- Copernicus perimeter
- Duration
- 9days
- 24 Aug 2023 – 1 Sept 2023
- Municipalities hit
- 1
- districts
- Started on
- 24 Aug
- 2023
- Heat detections
- 3
- in a single hotspot: 16 MW
- Danger at start
- 18
- Moderate · FWI index
- Average daily power
- 9MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
24 Aug1 Sept
1 Sept 2023
How it evolved, day by day
24 Aug
31 Aug
1 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
31°high
37km/h · peak gust
20%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
-
174 ha reached on 24 Aug0.1 %
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 land80 %
- Mixed forest11 %
- Agricultural areas9.4 %
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 Aug | 24.8 °C | 38 % | 34 km/h | 0.0 mm | Moderate 18 |
| 25 Aug | 24.6 °C | 46 % | 36 km/h | 1.1 mm | Low 11 |
| 26 Aug | 25.3 °C | 39 % | 20 km/h | 0.0 mm | Moderate 14 |
| 27 Aug | 28.8 °C | 55 % | 37 km/h | 1.0 mm | Moderate 13 |
| 28 Aug | 29.6 °C | 44 % | 30 km/h | 0.0 mm | Moderate 16 |
| 29 Aug | 25.5 °C | 37 % | 31 km/h | 0.0 mm | Moderate 20 |
| 30 Aug | 26.7 °C | 29 % | 26 km/h | 0.0 mm | High 21 |
| 31 Aug | 29.7 °C | 20 % | 32 km/h | 0.0 mm | High 30 |
| 1 Sept | 31.3 °C | 26 % | 30 km/h | 0.5 mm | High 30 |
| 2 Sept after | 24.5 °C | 57 % | 35 km/h | 0.0 mm | Moderate 20 |
| 3 Sept after | 26.3 °C | 43 % | 30 km/h | 0.0 mm | Moderate 21 |
| 4 Sept after | 27.5 °C | 40 % | 31 km/h | 0.1 mm | High 24 |
| 5 Sept after | 26.5 °C | 33 % | 27 km/h | 0.0 mm | High 22 |
| 6 Sept after | 26.5 °C | 39 % | 28 km/h | 0.0 mm | High 23 |
| 7 Sept after | 22.5 °C | 30 % | 42 km/h | 0.0 mm | High 28 |
| 8 Sept after | 20.6 °C | 33 % | 44 km/h | 0.0 mm | High 30 |
| 9 Sept after | 14.9 °C | 42 % | 48 km/h | 0.0 mm | High 29 |
| 10 Sept after | 19.9 °C | 49 % | 43 km/h | 0.0 mm | High 24 |
| 11 Sept after | 21.3 °C | 45 % | 27 km/h | 0.0 mm | Moderate 20 |
Its twins: fires that started in the same weather
It started with an FWI of 17.6, a minimum humidity of 38% and 1 day without rain. Fires in the area that started in weather like this since 2016: 17.
FWI at the start
17.6
Minimum humidity
38 %
Days without rain
1
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Svatove fire, August 2023
175 ha
9 days
FWI 17.6
Min. humidity 38 %
Kupiansk fire, September 2025
102 ha
3 days
FWI 17.6
Min. humidity 36 %
28 km away, in 2025
First rain (1 mm or more) after it ended: none in the following ten days.
Kostiantynivka fire, July 2026
130 ha
1 day
FWI 16.6
Min. humidity 38 %
107 km away, in 2026
First rain (1 mm or more) after it ended: 1.5 mm on 9 Aug.
Svatove fire, July 2025
223 ha
5 days
FWI 18.0
Min. humidity 40 %
24 km away, in 2025
First rain (1 mm or more) after it ended: 14.1 mm on 3 Aug.
Sloviansk fire, June 2022
170 ha
1 day
FWI 18.7
Min. humidity 37 %
52 km away, in 2022
First rain (1 mm or more) after it ended: 1.1 mm on 4 Jun.
Svatove fire, July 2025
161 ha
7 days
FWI 18.2
Min. humidity 40 %
32 km away, in 2025
First rain (1 mm or more) after it ended: 14.1 mm on 3 Aug.
What happened to them
- 3 days
- median duration
- 164 ha
- median area
- 0 %
- went past 1,000 ha
- 5.7 mm
- rain at the end (median; 13 of 17 had it)
It burned an area similar to its twins (175 ha against a median of 164 ha) and lasted 9 days, against 3 days.
In 4 of 17, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 5.7 mm.
This is a bank of analogues: it shows what usually happens, not what will happen. With fewer than 15 twins we give no figures. How we calculate it
How it ended
—first rain
—no rain in ten days
37km/h · max. gust
It was considered over on 1 Sept, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 13 of 17, with a median of 5.7 mm.
Weather on this page: Open-Meteo.com (CC BY 4.0) · Copernicus Climate Change Service (ERA5)
How a twin is chosen
- Same area: fires that have already ended, less than 250 km from this one, since 2016.
- Same start: we compare the FWI on the first day, the minimum humidity that day and the run of days without rain before it. The slider sets how much they may differ.
- Only pages with final weather data (ERA5 reanalysis) calculated in the same way as this fire’s; agricultural and grass burns and pages with data under review are left out.
- Fires burning at the same time as this one (a week before or after) are left out: they share the same spell of weather and do not count as a precedent.
- They are sorted by similarity, and the outlines of the first five are drawn.
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
↔
Before · 17 Aug 2023
After · 8 Sept 2023
Sentinel-2 did not pass over on that day. Try another date, or use false colour, which is daily.
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 · CopernicusOn 27 August 2023 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
PM1019 µg/m³
Optical depth1.42
WHO 15
22 Aug25 Aug28 Aug31 Aug3 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 · 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 time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 1,006 haKreminna Кремінський район3 July 2024 · 2 days · 34 km away
- 930 haLyman Лиманський район9 September 2025 · 9 days · 36 km away
- 893 haIzium Ізюмський район22 April 2024 · 3 days · 37 km away
- 8,563 haSloviansk Слов'янський район29 July 2024 · 5 days · 39 km away
- 1,345 haSloviansk Слов'янський район23 May 2024 · 5 days · 39 km away
Frequently asked questions
- How long did the Svatove fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 24 August 2023 to 1 September 2023 (9 days). The perimeter dates it from 24 August 2023 to 25 August 2023.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 175 hectares (1.8 km²). Official national figures may differ.
- Which municipalities burned?
- The fire only entered Svatove (174 ha, 0.1 %).
- Did the fire reach a town?
- The fire started in Svatove and came within 46.5 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 31.3 °C, humidity dropped to 20 % and gusts hit 37 km/h. The fire danger index (FWI) reached 30, 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.
- How did the fires that started in similar weather in this area end?
- Fires less than 250 km away that started since 2016 with a similar FWI, humidity and dry spell: 17. Their median duration was 3 days and their median area 164 ha; 0 % went past 1,000 ha. In 4 of 17, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 5.7 mm.
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 With cross-checks and a citable version
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
How we know this
- Perimeter: EFFIS (Copernicus), mapped on satellite imagery.
- Dates adjusted with the VIIRS detections inside the perimeter, which said 24 August 2023 to 25 August 2023. 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.
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.