Konjic fire, September 2026 Konjic, Istočni Mostar, Nevesinje
The fire started on 6 September 2026 in Konjic, Bosnia & Herzegovina, and satellites saw it burning for 6 days. Copernicus mapped a burnt perimeter of 1,660 hectares from satellite imagery, spread across 4 municipalities.
It is the 35th largest in Federation of Bosnia and Herzegovina since 2016 (of 520 with a page). Number 11 in Bosnia & Herzegovina in 2026, of 94.
- Burnt area
- 1,660ha
- Copernicus perimeter
- Duration
- 6days
- 6 Sept 2026 – 11 Sept 2026
- Municipalities hit
- 4
- municipalities
- Started on
- 6 Sept
- 2026
- Heat detections
- 152
- in a single hotspot: 41 MW
- Danger at start
- 28
- High · FWI index
- Energy released
- 936MW
- sum of detected power
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 8 days without rain (1 mm or more) when it started. Rain came after the fire: 6.5 mm on 11 Sept.
This area had burned before
34% of the perimeter overlaps earlier fires recorded since 2016: 423 ha in 2016, 9 ha in 2017, 170 ha in 2022, 128 ha in 2025. Part of it burned more than once, so the yearly figures add up to more than the 559 ha that had burned before.
- 423 ha Konjic fire, December 2016 440 ha in total; the hectares shown are those it shares with this fire
- 170 ha Konjic fire, March 2022 170 ha in total; the hectares shown are those it shares with this fire
- 128 ha Konjic fire, March 2025 129 ha in total; the hectares shown are those it shares with this fire
- 9 ha Mostar fire, August 2017 1,246 ha in total; the hectares shown are those it shares with this fire
What happened to each town
-
Konjic where it started1,252 ha reached on 6 Sept1.1 %
-
220 ha reached on 7 Sept3.0 %
-
147 ha reached on 7 Sept0.2 %
-
38 ha reached on 8 Sept0.0 %
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
- Other natural land50 %
- Broadleaved forest20 %
- Scrub and transitional woodland19 %
- Agricultural areas11 %
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) |
|---|---|---|---|---|---|
| 6 Sept | 26.6 °C | 35 % | 34 km/h | 0.0 mm | High 28 |
| 7 Sept | 27.9 °C | 23 % | 24 km/h | 0.0 mm | High 28 |
| 8 Sept | 28.8 °C | 26 % | 21 km/h | 0.0 mm | High 28 |
| 9 Sept | 26.8 °C | 34 % | 36 km/h | 0.0 mm | High 29 |
| 10 Sept | 26.4 °C | 40 % | 42 km/h | 0.0 mm | High 30 |
| 11 Sept | 19.5 °C | 69 % | 68 km/h | 6.5 mm | Very low 1 |
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 9 September 2026 the air beside the fire reached 151 µg/m³ of PM2.5. That day averaged 69: 4.6 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 · 152Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 4,538 haIstočni MostarApril 2020 · 6 days · 12 km away
- 2,545 haNevesinje7 August 2026 · 3 days · 12 km away
- 4,094 haNevesinje16 August 2026 · 1 day · 22 km away
- 3,843 haKalinovikJanuary 2024 · 5 days · 26 km away
- 1,896 haKalinovik10 April 2020 · 6 days · 31 km away
- 3,001 haKalinovik18 March 2020 · 6 days · 32 km away
Frequently asked questions
- How long did the Konjic fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 6 September 2026 to 11 September 2026 (6 days). The perimeter dates it from 6 September 2026 to 6 September 2026.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 1,660 hectares (16.6 km²). Official national figures may differ.
- Which municipalities burned?
- The fire entered 4 municipalities: Konjic (1,252 ha, 1.1 %); Istočni Mostar (220 ha, 3.0 %); Nevesinje (147 ha, 0.2 %); Mostar (38 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 26.6 °C, humidity dropped to 35 % and gusts hit 34 km/h. The fire danger index (FWI) reached 28, class High.
- Where does this data come from?
- From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Bosnia & Herzegovina (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: 123 · 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
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 ADM3 (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.