Sarny fire, 3 April 2020 Сарненський район · Sarny
The fire started on 3 April 2020 in Sarny, Ukraine, and satellites saw it burning for 20 days. Copernicus mapped a burnt perimeter of 1,261 hectares from satellite imagery, spread across a single municipality.
It is the 15th largest in Rivne Oblast since 2016 (of 167 with a page). Number 33 in Ukraine in 2020, of 132.
Compare with…
Suggestions: Sarny · 2021Sarny · 2025Sarny · 2025Sarny · 2020
- Burnt area
- 1,261ha
- Copernicus perimeter
- Duration
- 20days
- 3 Apr 2020 – 22 Apr 2020
- Municipalities hit
- 1
- districts
- Started on
- 3 Apr
- 2020
- Heat detections
- 71
- in a single hotspot: 41 MW
- Danger at start
- 10
- Low · FWI index
- Average daily power
- 44MW
- detected power per day, on average
Where it burned
How it evolved, day by day
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
It had gone 3 days without rain (1 mm or more) when it started. Rain came after the fire: 3.2 mm on 25 Apr.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
Kyiv boundary: geoBoundaries · OpenStreetMap, Wambacher · © OpenStreetMap contributors (ODbL 1.0).
Paris boundary: geoBoundaries · Institut national de l'information géographique et forestière (IGN-F) (Etalab Open License 2.0).
Madrid boundary: geoBoundaries · Open Data ESRI, IGN Central Registry of Cartography Area (CC BY 4.0).
This compares size, not location: both shapes are at the same scale, north up, centred on each other.
What happened to each town
-
1,262 ha reached on 3 Apr0.6 %
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 land54 %
- Mixed forest29 %
- Broadleaved forest10 %
- Agricultural areas6.9 %
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) |
|---|---|---|---|---|---|
| 3 Apr | 13.8 °C | 28 % | 54 km/h | 0.0 mm | Low 10 |
| 4 Apr | 10.2 °C | 28 % | 44 km/h | 0.0 mm | Low 9 |
| 5 Apr | 10.9 °C | 25 % | 28 km/h | 0.0 mm | Low 8 |
| 6 Apr | 13.7 °C | 25 % | 29 km/h | 0.0 mm | Low 8 |
| 7 Apr | 18.1 °C | 17 % | 34 km/h | 0.0 mm | Moderate 12 |
| 8 Apr | 17.3 °C | 30 % | 38 km/h | 0.0 mm | Moderate 13 |
| 9 Apr | 21.0 °C | 27 % | 37 km/h | 0.0 mm | Moderate 14 |
| 10 Apr | 11.2 °C | 28 % | 52 km/h | 0.3 mm | Moderate 16 |
| 11 Apr | 11.6 °C | 26 % | 46 km/h | 0.0 mm | Moderate 15 |
| 12 Apr | 13.8 °C | 23 % | 30 km/h | 0.0 mm | Moderate 13 |
| 13 Apr | 21.1 °C | 30 % | 63 km/h | 1.9 mm | Low 10 |
| 14 Apr | 8.4 °C | 30 % | 40 km/h | 0.3 mm | Low 9 |
| 15 Apr | 6.9 °C | 39 % | 60 km/h | 1.2 mm | Low 7 |
| 16 Apr | 18.1 °C | 31 % | 76 km/h | 0.0 mm | Moderate 19 |
| 17 Apr | 12.5 °C | 31 % | 57 km/h | 0.3 mm | Moderate 15 |
| 18 Apr | 10.7 °C | 28 % | 43 km/h | 0.0 mm | Moderate 13 |
| 19 Apr | 11.7 °C | 27 % | 50 km/h | 0.0 mm | Moderate 16 |
| 20 Apr | 8.4 °C | 38 % | 42 km/h | 0.2 mm | Moderate 14 |
| 21 Apr | 11.0 °C | 33 % | 42 km/h | 0.0 mm | Moderate 14 |
| 22 Apr | 15.2 °C | 32 % | 39 km/h | 0.1 mm | Moderate 14 |
| 23 Apr after | 17.4 °C | 28 % | 38 km/h | 0.0 mm | Moderate 16 |
| 24 Apr after | 18.2 °C | 28 % | 41 km/h | 0.1 mm | Moderate 18 |
| 25 Apr after | 16.6 °C | 41 % | 39 km/h | 3.2 mm | Very low 3 |
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
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 8 April 2020 the air beside the fire reached 24 µg/m³ of PM2.5. That day averaged 17: 1.2 times the WHO daily guideline (15).
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 · 71Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 1,524 haSarny Сарненський район21 October 2021 · 5 days · 1 km away
- 1,560 haSarny Сарненський район13 February 2025 · 5 days · 2 km away
- 2,025 haSarny Сарненський район26 February 2025 · 5 days · 5 km away
- 1,322 haSarny Сарненський район5 April 2020 · 7 days · 6 km away
- 1,703 haSarny Сарненський район21 October 2021 · 11 days · 7 km away
- 1,403 haDubrovytsia Дубровицький район4 March 2025 · 5 days · 13 km away
Frequently asked questions
- How long did the Sarny fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 3 April 2020 to 22 April 2020 (20 days). The perimeter dates it from 10 April 2020 to 15 April 2020.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 1,261 hectares (12.6 km²). Official national figures may differ.
- Which municipalities burned?
- The fire only entered Sarny (1,262 ha, 0.6 %).
- Did the fire reach a town?
- The fire started in Sarny and came within 36.2 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 21.1 °C, humidity dropped to 17 % and gusts hit 76 km/h. The fire danger index (FWI) reached 19, class Moderate.
- 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.
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 10 April 2020 to 15 April 2020. 71 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.