Burned area
satellite only170ha
Perimeter published by EFFIS (Copernicus).
- Source
- EFFIS (Copernicus)
- Date
- perimeter revised on 23 October 2024
+− cross-check
No official record is matched to this page to compare it with.
UA · Ukraine · –
Dvorichna fire, 25 September 2024 Дворічанський район · Dvorichna
Out · last detection 2 Oct 2024, 09:36 UTC
The fire started on 25 September 2024 in Dvorichna, Ukraine, and satellites saw it burning for 8 days. Copernicus mapped a burnt perimeter of 170 hectares from satellite imagery, spread across a single municipality.
It is the 258th largest in Kharkiv Oblast since 2016 (of 558 with a page). Number 1179 in Ukraine in 2024, of 2092.
The power measured by the satellite is low (3.9 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 2026-11-05matches 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 only8days
25 Sept 2024 to 2 Oct 2024: first and last day with fire on the page.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 2 Oct 2024, 09:36 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 only25 Sept 2024
First day with fire seen by the satellites or the perimeter.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 25 Sept 2024
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only2
VIIRS detections at 375 m. Most intense hotspot: 4 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP + NOAA-20)
- Date
- 25 Sept 2024 – 2 Oct 2024
+− 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 only4MW
Total radiative power on 2 October 2024; hotspots that day: 1.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 2 Oct 2024
+− 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
model58.9FWI · extreme
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 42.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 25 Sept 2024, 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
model27.1°C · 32% RH
High of 27.1 °C and minimum humidity of 32% on 28 September 2024; gusts of 59 km/h on 1 October 2024.
- Source
- weather model at the fire’s grid cell
- Date
- 25 Sept 2024 – 2 Oct 2024
- 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
-
logStart date: 2 October 2024 → 25 September 2024.
-
· reconstructed weatherWeather and FWI computed from the ERA5 reanalysis
-
logStart date: 28 September 2024 → 2 October 2024.
-
· reconstructed perimeterEFFIS (Copernicus) revises the perimeter
Area logged each night
Move the slider to see which area the page published each day.
Versioned permanent link
https://worldfires.org/en/fire/dvorichna-2024-09-11?v=2026-11-05A 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 dvorichna-2024-09-11.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024-09-25 | 0 | 0 | 23.8 | 7 | 14 | 14.9 | 31 | 0 | 58.9 | extremo | 1 |
| 2024-09-26 | 0 | 0 | 25.5 | 8.1 | 27 | 20.4 | 38.9 | 0 | 60.4 | extremo | 1 |
| 2024-09-27 | 0 | 0 | 23.1 | 13.2 | 31 | 23.9 | 45 | 0 | 63 | extremo | 1 |
| 2024-09-28 | 0 | 0 | 27.1 | 14.3 | 32 | 22.3 | 43.6 | 0 | 59.9 | extremo | 1 |
| 2024-09-29 | 0 | 0 | 25.9 | 12.1 | 16 | 26.3 | 47.2 | 0 | 76.3 | muy_extremo | 1 |
| 2024-09-30 | 0 | 0 | 25.1 | 14.7 | 24 | 25.1 | 47.2 | 0 | 73.8 | muy_extremo | 1 |
| 2024-10-01 | 1 | 1 | 25.7 | 13.5 | 15 | 31.7 | 59 | 0 | 94.2 | muy_extremo | 1 |
| 2024-10-02 | 1 | 4 | 25.7 | 8.7 | 15 | 19.1 | 36.7 | 0 | 68.7 | extremo | 1 |
| 2024-10-03 | 0 | 0 | 25.4 | 7.5 | 15 | 11.2 | 24.8 | 0 | 50.7 | extremo | 0 |
| 2024-10-04 | 0 | 0 | 24.2 | 6 | 18 | 16.6 | 32 | 0 | 63.7 | extremo | 0 |
| 2024-10-05 | 0 | 0 | 25.1 | 12.3 | 30 | 16.5 | 34.2 | 0 | 53.1 | extremo | 0 |
| 2024-10-06 | 0 | 0 | 27.6 | 12.2 | 22 | 17 | 35.3 | 0 | 56.8 | extremo | 0 |
| 2024-10-07 | 0 | 0 | 27.1 | 11.9 | 25 | 22.5 | 39.6 | 3.4 | 51 | extremo | 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
- 170ha
- Copernicus perimeter
- Duration
- 8days
- 25 Sept 2024 – 2 Oct 2024
- Municipalities hit
- 1
- districts
- Started on
- 25 Sept
- 2024
- Heat detections
- 2
- in a single hotspot: 4 MW
- Danger at start
- 59
- Extreme · FWI index
- Average daily power
- 2MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
25 Sept2 Oct
2 Oct 2024
How it evolved, day by day
1 Oct
2 Oct
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
59km/h · peak gust
14%lowest humidity
It had gone 42 days without rain (1 mm or more) when it started. Rain came after the fire: 3.4 mm on 7 Oct.
This area had burned before
21% of the perimeter overlaps earlier fires recorded since 2016: 36 ha in 2023.
What happened to each town
-
169 ha reached on 1 Oct0.2 %
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
- Other natural land58 %
- Mixed forest23 %
- Agricultural areas18 %
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)
Started with Extreme FWI: 28 % of the area in Ukraine Very dry air: 3.1 % of the area in Ukraine
| Day | High | Min. humidity | Peak gust | Rain | Danger (FWI) |
|---|---|---|---|---|---|
| 25 Sept | 23.8 °C | 14 % | 31 km/h | 0.0 mm | Extreme 59 |
| 26 Sept | 25.5 °C | 27 % | 39 km/h | 0.0 mm | Extreme 60 |
| 27 Sept | 23.1 °C | 31 % | 45 km/h | 0.0 mm | Extreme 63 |
| 28 Sept | 27.1 °C | 32 % | 44 km/h | 0.0 mm | Extreme 60 |
| 29 Sept | 25.9 °C | 16 % | 47 km/h | 0.0 mm | Very extreme 76 |
| 30 Sept | 25.1 °C | 24 % | 47 km/h | 0.0 mm | Very extreme 74 |
| 1 Oct | 25.7 °C | 15 % | 59 km/h | 0.0 mm | Very extreme 94 |
| 2 Oct | 25.7 °C | 15 % | 37 km/h | 0.0 mm | Extreme 69 |
| 3 Oct after | 25.4 °C | 15 % | 25 km/h | 0.0 mm | Extreme 51 |
| 4 Oct after | 24.2 °C | 18 % | 32 km/h | 0.0 mm | Extreme 64 |
| 5 Oct after | 25.1 °C | 30 % | 34 km/h | 0.0 mm | Extreme 53 |
| 6 Oct after | 27.6 °C | 22 % | 35 km/h | 0.0 mm | Extreme 57 |
| 7 Oct after | 27.1 °C | 25 % | 40 km/h | 3.4 mm | Extreme 51 |
Its twins: fires that started in the same weather
It started with an FWI of 58.9, a minimum humidity of 14% and 42 days without rain. Fires in the area that started in weather like this since 2020: 135.
FWI at the start
58.9
Minimum humidity
14 %
Days without rain
42
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Dvorichna fire, 25 September 2024
170 ha
8 days
FWI 58.9
Min. humidity 14 %
Shakhtarsk fire, August 2026
265 ha
1 day
FWI 58.5
Min. humidity 15 %
212 km away, in 2026
First rain (1 mm or more) after it ended: 6.6 mm on 6 Sept.
Novopskov fire, August 2024
115 ha
2 days
FWI 58.7
Min. humidity 14 %
83 km away, in 2024
First rain (1 mm or more) after it ended: none in the following ten days.
Starobesheve fire, September 2026
107 ha
1 day
FWI 53.2
Min. humidity 15 %
231 km away, in 2026
First rain (1 mm or more) after it ended: 5.9 mm on 6 Sept.
Antratsyt fire, August 2026
156 ha
1 day
FWI 56.4
Min. humidity 15 %
196 km away, in 2026
First rain (1 mm or more) after it ended: 5.5 mm on 6 Sept.
Kupiansk fire, August 2024
105 ha
7 days
FWI 63.7
Min. humidity 15 %
11 km away, in 2024
First rain (1 mm or more) after it ended: none in the following ten days.
What happened to them
- 3 days
- median duration
- 179 ha
- median area
- 7 %
- went past 1,000 ha
- 3.5 mm
- rain at the end (median; 79 of 135 had it)
It burned an area similar to its twins (170 ha against a median of 179 ha) and lasted 8 days, against 3 days.
In 56 of 135, 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 3.5 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
3.4 mmfirst rain
7 Oct5 days after it ended
59km/h · max. gust
It was considered over on 2 Oct, and on 7 Oct 3.4 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 79 of 135, with a median of 3.5 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 2020.
- 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 · 18 Sept 2024
After · 9 Oct 2024
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 3 October 2024 the air beside the fire reached 25 µg/m³ of PM2.5. That day averaged 19: 1.3 times the WHO daily guideline (15).
PM2.5 peak25 µg/m³
Days over the guideline3 days
PM1087 µg/m³
Optical depth0.21
WHO 15
30 Sept2 Oct4 Oct
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 · 2Every 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
- 1,521 haDvorichna Дворічанський район3 August 2024 · 5 days · 11 km away
- 5,551 haDvorichna Дворічанський район21 August 2024 · 18 days · 16 km away
- 2,132 haDvorichna Дворічанський район19 August 2024 · 5 days · 16 km away
- 1,299 haDvorichna Дворічанський район31 March 2024 · 4 days · 23 km away
- 1,057 haVelykyi Burluk Великобурлуцький район30 August 2024 · 8 days · 26 km away
- 807 haKupiansk Куп'янський район1 September 2024 · 3 days · 35 km away
Frequently asked questions
- How long did the Dvorichna fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 25 September 2024 to 2 October 2024 (8 days). The perimeter dates it from 2 October 2024 to 2 October 2024.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 170 hectares (1.7 km²). Official national figures may differ.
- Which municipalities burned?
- The fire only entered Dvorichna (169 ha, 0.2 %).
- Did the fire reach a town?
- The fire started in Dvorichna and came within 2.1 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 27.1 °C, humidity dropped to 14 % and gusts hit 59 km/h. The fire danger index (FWI) reached 94, class Very extreme.
- 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 2020 with a similar FWI, humidity and dry spell: 135. Their median duration was 3 days and their median area 179 ha; 7 % went past 1,000 ha. In 56 of 135, 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 3.5 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 · 2 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
- Start date: 2 October 2024 → 25 September 2024.
- Start date: 28 September 2024 → 2 October 2024.
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 2 October 2024 to 2 October 2024. 2 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.