Burned area
satellite only668ha
Perimeter published by EFFIS (Copernicus).
- Source
- EFFIS (Copernicus)
- Date
- perimeter revised on 26 January 2022
+− cross-check
No official record is matched to this page to compare it with.
HR · Croatia · –
Općina Jasenice fire, 15 August 2017 Općina Jasenice, Općina Lovinac, Općina Gračac
Out · last detection 1 Sept 2017, 00:17 UTC
The fire started on 15 August 2017 in Općina Jasenice, Croatia, and satellites saw it burning for 18 days. Copernicus mapped a burnt perimeter of 668 hectares from satellite imagery, spread across 3 municipalities.
It is the 13th largest in Zadar County since 2016 (of 55 with a page). Number 30 in Croatia in 2017, of 78.
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 only18days
15 Aug 2017 to 1 Sept 2017: first and last day with fire on the page.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 1 Sept 2017, 00:17 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 only15 Aug 2017
First day with fire seen by the satellites or the perimeter.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 15 Aug 2017
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only120
VIIRS detections at 375 m. Most intense hotspot: 55 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 15 Aug 2017 – 1 Sept 2017
+− 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 only402MW
Total radiative power on 26 August 2017; hotspots that day: 34.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 26 Aug 2017
+− 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
model25.6FWI · high
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 2.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 15 Aug 2017, 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
model30.8°C · 24% RH
High of 30.8 °C and minimum humidity of 24% on 18 August 2017; gusts of 67 km/h on 21 August 2017.
- Source
- weather model at the fire’s grid cell
- Date
- 15 Aug 2017 – 1 Sept 2017
- 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
- 668 ha
- Dates
- 15 Aug 2017 – 1 Sept 2017
- Name
- Općina Jasenice
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/opcina-jasenice-2017-08-2?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-jasenice-2017-08-2.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017-08-15 | 2 | 7 | 25.6 | 11.9 | 36 | 15.5 | 46.1 | 0 | 25.6 | alto | 1 |
| 2017-08-16 | 3 | 3 | 28.8 | 12.6 | 33 | 9.7 | 33.5 | 0 | 23.9 | alto | 1 |
| 2017-08-17 | 0 | 0 | 29.1 | 16 | 27 | 14.3 | 44.3 | 0 | 29.3 | alto | 1 |
| 2017-08-18 | 2 | 2 | 30.8 | 15.9 | 24 | 11.3 | 29.5 | 0 | 25.2 | alto | 1 |
| 2017-08-19 | 3 | 11 | 28.8 | 17.4 | 33 | 10.5 | 33.5 | 0 | 31.3 | alto | 1 |
| 2017-08-20 | 0 | 0 | 18.4 | 14.2 | 61 | 22.3 | 55.4 | 5.8 | 3.1 | muy_bajo | 1 |
| 2017-08-21 | 6 | 31 | 21.8 | 12.9 | 32 | 22.2 | 67 | 0 | 17.4 | moderado | 1 |
| 2017-08-22 | 7 | 11 | 22.1 | 9.5 | 29 | 16.8 | 51.8 | 0 | 24.4 | alto | 1 |
| 2017-08-23 | 2 | 2 | 25.5 | 8.3 | 28 | 9 | 29.9 | 0 | 19.7 | moderado | 1 |
| 2017-08-24 | 7 | 11 | 27.5 | 12.1 | 26 | 9 | 29.5 | 0 | 27.8 | alto | 1 |
| 2017-08-25 | 11 | 47 | 29.6 | 14.7 | 27 | 9.5 | 29.5 | 0 | 28.5 | alto | 1 |
| 2017-08-26 | 34 | 402 | 30.4 | 13.8 | 27 | 10 | 30.6 | 0 | 30 | alto | 1 |
| 2017-08-27 | 9 | 24 | 29.7 | 14.4 | 38 | 10.1 | 29.9 | 1.5 | 29.3 | alto | 1 |
| 2017-08-28 | 5 | 8 | 26.9 | 16.6 | 39 | 12 | 33.5 | 2.1 | 18.2 | moderado | 1 |
| 2017-08-29 | 3 | 11 | 24.9 | 13.2 | 37 | 19.5 | 60.8 | 0 | 16.3 | moderado | 1 |
| 2017-08-30 | 16 | 150 | 27 | 10.8 | 26 | 8.6 | 25.9 | 0 | 20.5 | moderado | 1 |
| 2017-08-31 | 9 | 34 | 27 | 15.1 | 29 | 11.7 | 36 | 0 | 32.3 | alto | 1 |
| 2017-09-01 | 1 | 2 | 22.1 | 15.7 | 44 | 10.1 | 42.5 | 0.1 | 19.3 | moderado | 1 |
| 2017-09-02 | 0 | 0 | 21.6 | 12 | 60 | 13.7 | 59.8 | 58.7 | 6.4 | 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
- 668ha
- Copernicus perimeter
- Duration
- 18days
- 15 Aug 2017 – 1 Sept 2017
- Municipalities hit
- 3
- municipalities
- Started on
- 15 Aug
- 2017
- Heat detections
- 120
- in a single hotspot: 55 MW
- Danger at start
- 26
- High · FWI index
- Average daily power
- 47MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
15 Aug1 Sept
1 Sept 2017
How it evolved, day by day
15 Aug
21 Aug
26 Aug
29 Aug
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
31°high
67km/h · peak gust
24%lowest humidity
It had gone 2 days without rain (1 mm or more) when it started. Rain came after the fire: 58.7 mm on 2 Sept.
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).
Zagreb 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
-
Općina Jasenice where it started489 ha reached on 15 Aug4.0 %
-
135 ha reached on 21 Aug0.4 %
-
44 ha reached on 25 Aug0.0 %
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 land62 %
- Broadleaved forest34 %
- Scrub and transitional woodland3.9 %
Natura 2000 protected area affected: 100 %
- LIC Park prirode Velebit HR5000022
- ZEPA Velebit HR1000022
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) |
|---|---|---|---|---|---|
| 15 Aug | 25.6 °C | 36 % | 46 km/h | 0.0 mm | High 26 |
| 16 Aug | 28.8 °C | 33 % | 34 km/h | 0.0 mm | High 24 |
| 17 Aug | 29.1 °C | 27 % | 44 km/h | 0.0 mm | High 29 |
| 18 Aug | 30.8 °C | 24 % | 30 km/h | 0.0 mm | High 25 |
| 19 Aug | 28.8 °C | 33 % | 34 km/h | 0.0 mm | High 31 |
| 20 Aug | 18.4 °C | 61 % | 55 km/h | 5.8 mm | Very low 3 |
| 21 Aug | 21.8 °C | 32 % | 67 km/h | 0.0 mm | Moderate 17 |
| 22 Aug | 22.1 °C | 29 % | 52 km/h | 0.0 mm | High 24 |
| 23 Aug | 25.5 °C | 28 % | 30 km/h | 0.0 mm | Moderate 20 |
| 24 Aug | 27.5 °C | 26 % | 30 km/h | 0.0 mm | High 28 |
| 25 Aug | 29.6 °C | 27 % | 30 km/h | 0.0 mm | High 28 |
| 26 Aug | 30.4 °C | 27 % | 31 km/h | 0.0 mm | High 30 |
| 27 Aug | 29.7 °C | 38 % | 30 km/h | 1.5 mm | High 29 |
| 28 Aug | 26.9 °C | 39 % | 34 km/h | 2.1 mm | Moderate 18 |
| 29 Aug | 24.9 °C | 37 % | 61 km/h | 0.0 mm | Moderate 16 |
| 30 Aug | 27.0 °C | 26 % | 26 km/h | 0.0 mm | Moderate 20 |
| 31 Aug | 27.0 °C | 29 % | 36 km/h | 0.0 mm | High 32 |
| 1 Sept | 22.1 °C | 44 % | 42 km/h | 0.1 mm | Moderate 19 |
| 2 Sept after | 21.6 °C | 60 % | 60 km/h | 58.7 mm | Low 6 |
Its twins: fires that started in the same weather
It started with an FWI of 25.6, a minimum humidity of 36% and 2 days without rain. Fires in the area that started in weather like this since 2016: 27.
FWI at the start
25.6
Minimum humidity
36 %
Days without rain
2
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Općina Jasenice fire, 15 August 2017
668 ha
18 days
FWI 25.6
Min. humidity 36 %
Grad Drniš fire, June 2017
854 ha
1 day
FWI 27.0
Min. humidity 35 %
54 km away, in 2017
First rain (1 mm or more) after it ended: 1.7 mm on 1 Jul.
Grad Drniš fire, July 2016
1,104 ha
6 days
FWI 27.9
Min. humidity 33 %
64 km away, in 2016
First rain (1 mm or more) after it ended: 8.3 mm on 25 Jul.
Mostar fire, July 2026
646 ha
11 days
FWI 23.3
Min. humidity 37 %
202 km away, in 2026
First rain (1 mm or more) after it ended: 2.9 mm on 15 Jul.
Općina Kijevo fire, August 2024
1,712 ha
3 days
FWI 26.0
Min. humidity 32 %
63 km away, in 2024
First rain (1 mm or more) after it ended: 19.3 mm on 19 Aug.
Grad Vrlika fire, July 2017
1,488 ha
17 days
FWI 20.8
Min. humidity 35 %
80 km away, in 2017
First rain (1 mm or more) after it ended: 22.9 mm on 25 Jul.
What happened to them
- 3 days
- median duration
- 613 ha
- median area
- 30 %
- went past 1,000 ha
- 6.0 mm
- rain at the end (median; 22 of 27 had it)
It burned an area similar to its twins (668 ha against a median of 613 ha) and lasted 18 days, against 3 days.
In 5 of 27, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 6.0 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
58.7 mmfirst rain
2 Septthe day after it ended
67km/h · max. gust
It was considered over on 1 Sept, and on 2 Sept 58.7 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 22 of 27, with a median of 6.0 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 · 8 Aug 2017
After · 8 Sept 2017
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 31 August 2017 the air beside the fire reached 16 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).
PM2.5 peak16 µg/m³
Days over the guideline0 days
PM1024 µg/m³
WHO 15
11 Aug16 Aug21 Aug26 Aug31 Aug
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 · 120Every 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
- 3,936 haOpćina Gračac22 March 2022 · 8 days · 19 km away
- 4,959 haOpćina Gračac5 April 2020 · 9 days · 23 km away
- 3,876 haGrad Benkovac20 August 2017 · 5 days · 32 km away
- 2,218 haOpćina UdbinaApril 2020 · 7 days · 33 km away
- 4,086 haOpćina Gračac5 August 2017 · 7 days · 34 km away
- 4,225 haOpćina Gračac21 March 2022 · 7 days · 37 km away
Frequently asked questions
- How long did the Općina Jasenice fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 15 August 2017 to 1 September 2017 (18 days). The perimeter dates it from 22 August 2017 to 25 August 2017.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 668 hectares (6.7 km²). Official national figures may differ.
- Which municipalities burned?
- The fire entered 3 municipalities: Općina Jasenice (489 ha, 4.0 %); Općina Lovinac (135 ha, 0.4 %); Općina Gračac (44 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 30.8 °C, humidity dropped to 24 % and gusts hit 67 km/h. The fire danger index (FWI) reached 32, class High.
- 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: 27. Their median duration was 3 days and their median area 613 ha; 30 % went past 1,000 ha. In 5 of 27, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 6.0 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 adjusted with the VIIRS detections inside the perimeter, which said 22 August 2017 to 25 August 2017. 120 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.