Burned area
satellite only114ha
Perimeter published by EFFIS (Copernicus).
- Source
- EFFIS (Copernicus)
- Date
- perimeter revised on 2 March 2022
+− cross-check
No official record is matched to this page to compare it with.
HR · Croatia ·
Općina Gračac fire, 27 February 2019 Općina Gračac
Out · last detection 27 Feb 2019, 01:57 UTC
The fire started on 27 February 2019 in Općina Gračac, Croatia, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 114 hectares from satellite imagery, spread across a single municipality.
It is the 49th largest in Zadar County since 2016 (of 55 with a page). Number 27 in Croatia in 2019, of 32.
The power measured by the satellite is low (1.7 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 2026-10-24matches 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 only1day
27 Feb 2019 to 27 Feb 2019: first and last day with fire on the page.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 27 Feb 2019, 01:57 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 only27 Feb 2019
First day with fire seen by the satellites or the perimeter.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 27 Feb 2019
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only3
VIIRS detections at 375 m. Most intense hotspot: 2 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 27 Feb 2019 – 27 Feb 2019
+− 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 only5MW
Total radiative power on 27 February 2019; hotspots that day: 3.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 27 Feb 2019
+− 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
model5.9FWI · low
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 4.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 27 Feb 2019, 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
model10.8°C · 40% RH
High of 10.8 °C and minimum humidity of 40% on 27 February 2019; gusts of 82 km/h on 27 February 2019.
- Source
- weather model at the fire’s grid cell
- Date
- 27 Feb 2019 – 27 Feb 2019
- 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
-
· reconstructed weatherWeather and FWI computed from the ERA5 reanalysis
-
· reconstructed perimeterEFFIS (Copernicus) revises the perimeter
What was saved on 24 October 2026
Every night a snapshot of what the page shows is saved. If anything changes, it appears in the list as a log entry.
- Area
- 114 ha
- Dates
- 27 Feb 2019 – 27 Feb 2019
- Name
- Općina Gračac
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/opcina-gracac-2019-02?v=2026-10-24A 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 opcina-gracac-2019-02.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019-02-27 | 3 | 5 | 10.8 | 4.5 | 40 | 23.6 | 82.1 | 0 | 5.9 | bajo | 1 |
| 2019-02-28 | 0 | 0 | 16 | 1.2 | 33 | 11.2 | 30.6 | 0 | 4.4 | muy_bajo | 0 |
| 2019-03-01 | 0 | 0 | 14.1 | 4.4 | 42 | 12.6 | 31.3 | 1.1 | 1.7 | muy_bajo | 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
- 114ha
- Copernicus perimeter
- Duration
- 1day
- 27 Feb 2019 – 27 Feb 2019
- Municipalities hit
- 1
- municipalities
- Started on
- 27 Feb
- 2019
- Heat detections
- 3
- in a single hotspot: 2 MW
- Danger at start
- 6
- Low · FWI index
- Average daily power
- 5MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
27 Feb27 Feb
How it evolved, day by day
27 Feb 2019 · 5 MW · 3
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
11°high
82km/h · peak gust
40%lowest humidity
It had gone 4 days without rain (1 mm or more) when it started. Rain came after the fire: 1.1 mm on 1 Mar.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
What happened to each town
-
Općina Gračac where it started112 ha reached on 27 Feb0.1 %
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
- Agricultural areas54 %
- Broadleaved forest46 %
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)
Started with Strong wind: 26 % of the area in Croatia
| Day | High | Min. humidity | Peak gust | Rain | Danger (FWI) |
|---|---|---|---|---|---|
| 27 Feb | 10.8 °C | 40 % | 82 km/h | 0.0 mm | Low 6 |
| 28 Feb after | 16.0 °C | 33 % | 31 km/h | 0.0 mm | Very low 4 |
| 1 Mar after | 14.1 °C | 42 % | 31 km/h | 1.1 mm | Very low 2 |
Its twins: fires that started in the same weather
It started with an FWI of 5.9, a minimum humidity of 40% and 4 days without rain. Fires in the area that started in weather like this since 2016: 21.
FWI at the start
5.9
Minimum humidity
40 %
Days without rain
4
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Općina Gračac fire, 27 February 2019
114 ha
1 day
FWI 5.9
Min. humidity 40 %
Glamoč fire, July 2017
2,786 ha
13 days
FWI 6.2
Min. humidity 40 %
51 km away, in 2017
First rain (1 mm or more) after it ended: 14.5 mm on 12 Aug.
Bihać fire, March 2020
488 ha
5 days
FWI 5.8
Min. humidity 40 %
12 km away, in 2020
First rain (1 mm or more) after it ended: 2.1 mm on 23 Mar.
Bihać fire, March 2025
111 ha
2 days
FWI 5.9
Min. humidity 41 %
6 km away, in 2025
First rain (1 mm or more) after it ended: 16.7 mm on 11 Mar.
Bihać fire, March 2025
294 ha
1 day
FWI 5.9
Min. humidity 41 %
7 km away, in 2025
First rain (1 mm or more) after it ended: 1.4 mm on 10 Mar.
Bihać fire, August 2026
120 ha
12 days
FWI 4.6
Min. humidity 40 %
55 km away, in 2026
First rain (1 mm or more) after it ended: 10.5 mm on 10 Sept.
What happened to them
- 2 days
- median duration
- 318 ha
- median area
- 19 %
- went past 1,000 ha
- 5.1 mm
- rain at the end (median; 21 of 21 had it)
It stayed below its twins: 114 ha against a median of 318 ha. It lasted 1 day, against 2 days.
All of them had rain in the ten days after the end: the first rainy day brought a median of 5.1 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
1.1 mmfirst rain
1 Mar2 days after it ended
82km/h · max. gust
It was considered over on 27 Feb, and on 1 Mar 1.1 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 21 of 21, with a median of 5.1 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 2016.
- 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 · 20 Feb 2019
After · 6 Mar 2019
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 1 March 2019 the air beside the fire reached 22 µg/m³ of PM2.5. That day averaged 17: 1.1 times the WHO daily guideline (15).
PM2.5 peak22 µg/m³
Days over the guideline2 days
PM1035 µg/m³
WHO 15
25 Feb27 Feb1 Mar
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 · 3Every 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
- 3,528 haBihać20 March 2022 · 10 days · 5 km away
- 4,086 haOpćina Gračac5 August 2017 · 7 days · 19 km away
- 4,225 haOpćina Gračac21 March 2022 · 7 days · 20 km away
- 4,959 haOpćina Gračac5 April 2020 · 9 days · 23 km away
- 3,936 haOpćina Gračac22 March 2022 · 8 days · 28 km away
- 8,657 haBosansko GrahovoAugust 2026 · 12 days · 40 km away
Frequently asked questions
- How long did the Općina Gračac fire last?
- Copernicus dates it between 27 February 2019 and 27 February 2019: 1 day between the first and last image with fire.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 114 hectares (1.1 km²). Official national figures may differ.
- Which municipalities burned?
- The fire only entered Općina Gračac (112 ha, 0.1 %).
- What was the weather like?
- During the fire the temperature reached 10.8 °C, humidity dropped to 40 % and gusts hit 82 km/h. The fire danger index (FWI) reached 6, class Low.
- Where does this data come from?
- From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Croatia (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 2016 with a similar FWI, humidity and dry spell: 21. Their median duration was 2 days and their median area 318 ha; 19 % went past 1,000 ha. All of them had rain in the ten days after the end: the first rainy day brought a median of 5.1 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: 112 · 193 · 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.
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 from the perimeter: the VIIRS detections inside it did not change them. 3 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 (Creative Commons Attribution-ShareAlike 2.0). 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.