Lom fire, 9 August 2026 Лом · Lom
The fire started on 9 August 2026 in Lom, Bulgaria, and satellites saw it burning for 7 days. Copernicus mapped a burnt perimeter of 283 hectares from satellite imagery, spread across a single municipality.
It is the 4th largest in Montana since 2016 (of 19 with a page). Number 7 in Bulgaria in 2026, of 24.
The power measured by the satellite is low (16.8 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.
Compare with…
Suggestions: Dimovo · 2022Dimovo · 2024Dimovo · 2024Dimovo · 2025
- Burnt area
- 283ha
- Copernicus perimeter
- Duration
- 7days
- 9 Aug 2026 – 15 Aug 2026
- Municipalities hit
- 1
- municipalities
- Started on
- 9 Aug
- 2026
- Heat detections
- 50
- in a single hotspot: 17 MW
- Danger at start
- 34
- High · FWI index
- Average daily power
- 37MW
- 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 31 days 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
-
283 ha reached on 9 Aug0.9 %
Burnt area inside each municipality, from crossing the official perimeter with administrative boundaries. The distance is from the town centre to the nearest fire: staying a kilometre away does not mean it reached the houses.
What burned
- Agricultural areas95 %
- Other natural land4.2 %
- Artificial surfaces0.7 %
Natura 2000 protected area affected: 94 %
- LIC Orsoya BG0000182
Natura 2000 sites (European Environment Agency, 2024 release) crossed by the perimeter.
Land cover inside the perimeter according to Corine Land Cover, as reported by Copernicus.
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) |
|---|---|---|---|---|---|
| 9 Aug | 31.5 °C | 37 % | 27 km/h | 0.4 mm | High 34 |
| 10 Aug | 33.2 °C | 30 % | 31 km/h | 0.0 mm | High 36 |
| 11 Aug | 35.3 °C | 24 % | 16 km/h | 0.0 mm | High 33 |
| 12 Aug | 36.4 °C | 19 % | 24 km/h | 0.0 mm | Very high 42 |
| 13 Aug | 30.0 °C | 31 % | 30 km/h | 0.0 mm | Very high 40 |
| 14 Aug | 28.9 °C | 30 % | 40 km/h | 0.0 mm | Very high 44 |
| 15 Aug | 29.0 °C | 25 % | 34 km/h | 0.0 mm | Very high 41 |
| 16 Aug after | 31.0 °C | 24 % | 36 km/h | 0.0 mm | Very high 42 |
| 17 Aug after | 33.5 °C | 20 % | 25 km/h | 0.0 mm | Very high 39 |
| 18 Aug after | 30.5 °C | 31 % | 53 km/h | 0.0 mm | Extreme 52 |
| 19 Aug after | 32.0 °C | 27 % | 18 km/h | 0.0 mm | High 33 |
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 12 August 2026 the air beside the fire reached 36 µg/m³ of PM2.5. That day averaged 19: 1.3 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 · 50Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 260 haDimovo ДимовоJuly 2022 · 3 days · 6 km away
- 561 haDimovo Димово4 August 2024 · 3 days · 7 km away
- 230 haDimovo Димово13 August 2024 · 2 days · 8 km away
- 443 haDimovo ДимовоJuly 2025 · 5 days · 10 km away
- 276 haMontana Монтана23 August 2024 · 3 days · 26 km away
- 490 haNegoiJanuary 2020 · 1 day · 28 km away
Frequently asked questions
- How long did the Lom fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 9 August 2026 to 15 August 2026 (7 days). The perimeter dates it from 9 August 2026 to 9 August 2026.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 283 hectares (2.8 km²). Official national figures may differ.
- Which municipalities burned?
- The fire only entered Lom (283 ha, 0.9 %).
- Did the fire reach a town?
- The closest fire to a town centre came within 21.9 km of Lom. That is the distance to the perimeter or nearest hotspot; it does not mean it entered the houses.
- What was the weather like?
- During the fire the temperature reached 31.5 °C, humidity dropped to 37 % and gusts hit 27 km/h. The fire danger index (FWI) reached 34, class High.
- Where does this data come from?
- From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Bulgaria (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.
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 9 August 2026 to 9 August 2026. 50 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.