Trebinje fire, September 2021 Trebinje
The fire started on 11 September 2021 in Trebinje, Bosnia & Herzegovina, and satellites saw it burning for 5 days. Copernicus mapped a burnt perimeter of 1,786 hectares from satellite imagery, spread across a single municipality.
It is the 25th largest in Republika Srpska since 2016 (of 391 with a page). Number 8 in Bosnia & Herzegovina in 2021, of 86.
- Burnt area
- 1,786ha
- Copernicus perimeter
- Duration
- 5days
- 11 Sept 2021 – 15 Sept 2021
- Municipalities hit
- 1
- municipalities
- Started on
- 11 Sept
- 2021
- Heat detections
- 94
- in a single hotspot: 34 MW
- Danger at start
- 3
- Very low · FWI index
- Energy released
- 369MW
- 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 12 days without rain (1 mm or more) when it started. Rain came after the fire: 4.8 mm on 17 Sept.
This area had burned before
23% of the perimeter overlaps earlier fires recorded since 2016: 410 ha in 2018.
What happened to each town
-
Trebinje where it started1,787 ha reached on 11 Sept2.0 %
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 land63 %
- Sclerophyllous scrub30 %
- Agricultural areas3.6 %
- Broadleaved forest3.0 %
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) |
|---|---|---|---|---|---|
| 11 Sept | 25.1 °C | 57 % | 21 km/h | 1.8 mm | Very low 3 |
| 12 Sept | 26.5 °C | 39 % | 24 km/h | 0.0 mm | Low 10 |
| 13 Sept | 27.0 °C | 38 % | 20 km/h | 0.0 mm | Moderate 14 |
| 14 Sept | 26.6 °C | 49 % | 24 km/h | 0.0 mm | Moderate 13 |
| 15 Sept | 26.8 °C | 53 % | 26 km/h | 0.2 mm | Moderate 13 |
| 16 Sept after | 25.9 °C | 58 % | 28 km/h | 0.3 mm | Moderate 12 |
| 17 Sept after | 24.0 °C | 62 % | 49 km/h | 4.8 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.
Detections table · 94Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
Frequently asked questions
- How long did the Trebinje fire last?
- Copernicus dates it between 11 September 2021 and 15 September 2021: 5 days between the first and last image with fire.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 1,786 hectares (17.9 km²). Official national figures may differ.
- Which municipalities burned?
- The fire only entered Trebinje (1,787 ha, 2.0 %).
- What was the weather like?
- During the fire the temperature reached 27.0 °C, humidity dropped to 38 % and gusts hit 26 km/h. The fire danger index (FWI) reached 14, class Moderate.
- 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.