Burned area
satellite only1,563ha
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.
IT · Italy · –
Cianciana fire, July 2021 Cianciana, Cattolica Eraclea, Sant'Angelo Muxaro
Out · last detection 13 Jul 2021, 01:03 UTC
The fire started on 11 July 2021 in Cianciana, Italy, and satellites saw it burning for 3 days. Copernicus mapped a burnt perimeter of 1,563 hectares from satellite imagery, spread across 4 municipalities.
It is the 3th largest in Agrigento since 2016 (of 289 with a page). Number 12 in Italy in 2021, of 291.
Use this data
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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 only3days
11 Jul 2021 to 13 Jul 2021: first and last day with fire on the page.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 13 Jul 2021, 01:03 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 only11 Jul 2021
First day with fire seen by the satellites or the perimeter.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 11 Jul 2021
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only43
VIIRS detections at 375 m. Most intense hotspot: 60 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 11 Jul 2021 – 13 Jul 2021
+− 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 only554MW
Total radiative power on 12 July 2021; hotspots that day: 38.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 12 Jul 2021
+− 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
model44.7FWI · very high
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 28.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 11 Jul 2021, 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
model31.4°C · 36% RH
High of 31.4 °C and minimum humidity of 36% on 12 July 2021; gusts of 41 km/h on 11 July 2021.
- Source
- weather model at the fire’s grid cell
- Date
- 11 Jul 2021 – 13 Jul 2021
- 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
- 1,563 ha
- Dates
- 11 Jul 2021 – 13 Jul 2021
- Name
- Cianciana
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/cianciana-2021-07?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 cianciana-2021-07.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021-07-11 | 1 | 5 | 31 | 19.4 | 32 | 17 | 41 | 0 | 44.7 | muy_alto | 1 |
| 2021-07-12 | 38 | 554 | 31.4 | 19.4 | 36 | 10.9 | 27.4 | 0 | 35 | alto | 1 |
| 2021-07-13 | 4 | 9 | 31.1 | 22.5 | 37 | 14.3 | 29.5 | 0 | 41.7 | muy_alto | 1 |
| 2021-07-14 | 0 | 0 | 30.5 | 20.5 | 52 | 19.9 | 47.2 | 0 | 31 | alto | 0 |
| 2021-07-15 | 0 | 0 | 29.1 | 18.7 | 43 | 13.5 | 35.6 | 0 | 31.7 | alto | 0 |
| 2021-07-16 | 0 | 0 | 28 | 18.9 | 45 | 22.5 | 50.8 | 0.1 | 40.3 | muy_alto | 0 |
| 2021-07-17 | 0 | 0 | 25.9 | 20.9 | 59 | 18.1 | 46.4 | 1 | 32.9 | alto | 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
- 1,563ha
- Copernicus perimeter
- Duration
- 3days
- 11 Jul 2021 – 13 Jul 2021
- Municipalities hit
- 4
- municipalities
- Started on
- 11 Jul
- 2021
- Heat detections
- 43
- in a single hotspot: 60 MW
- Danger at start
- 45
- Very high · FWI index
- Average daily power
- 189MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
11 Jul13 Jul
13 Jul 2021
How it evolved, day by day
11 Jul
12 Jul
13 Jul
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
41km/h · peak gust
32%lowest humidity
It had gone 28 days without rain (1 mm or more) when it started. Rain came after the fire: 1.0 mm on 17 Jul.
This area had burned before
34% of the perimeter overlaps earlier fires recorded since 2016: 269 ha in 2016, 253 ha in 2018, 25 ha in 2019, 26 ha in 2020. Part of it burned more than once, so the yearly figures add up to more than the 537 ha that had burned before.
- 269 ha Sant'Angelo Muxaro fire, August 2016 481 ha in total; the hectares shown are those it shares with this fire
- 234 ha Cattolica Eraclea fire, August 2018 390 ha in total; the hectares shown are those it shares with this fire
- 25 ha Sant'Angelo Muxaro fire, July 2019 123 ha in total; the hectares shown are those it shares with this fire
- 1 ha Sant'Angelo Muxaro fire, August 2020 115 ha in total; the hectares shown are those it shares with this fire
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
Rome boundary: geoBoundaries · ISTAT, National Institute of Statistics (CC BY 3.0).
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
-
949 ha reached on 11 Jul25 %
-
Cattolica Eraclea 3,300 inhabitants · 1.8 km from the centre313 ha reached on 12 Jul5.0 %
-
Sant'Angelo Muxaro 1,152 inhabitants · 9.0 km from the centre300 ha reached on 12 Jul4.7 %
-
Alessandria della Rocca 2,452 inhabitants · 7.3 km from the centre4 ha0.1 %
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
- Mixed forest27 %
- Sclerophyllous scrub26 %
- Agricultural areas24 %
- Coniferous forest13 %
- Other natural land9.7 %
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 Jul | 31.0 °C | 32 % | 41 km/h | 0.0 mm | Very high 45 |
| 12 Jul | 31.4 °C | 36 % | 27 km/h | 0.0 mm | High 35 |
| 13 Jul | 31.1 °C | 37 % | 30 km/h | 0.0 mm | Very high 42 |
| 14 Jul after | 30.5 °C | 52 % | 47 km/h | 0.0 mm | High 31 |
| 15 Jul after | 29.1 °C | 43 % | 36 km/h | 0.0 mm | High 32 |
| 16 Jul after | 28.0 °C | 45 % | 51 km/h | 0.1 mm | Very high 40 |
| 17 Jul after | 25.9 °C | 59 % | 46 km/h | 1.0 mm | High 33 |
Its twins: fires that started in the same weather
It started with an FWI of 44.7, a minimum humidity of 32% and 28 days without rain. Fires in the area that started in weather like this since 2016: 25.
FWI at the start
44.7
Minimum humidity
32 %
Days without rain
28
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Cianciana fire, July 2021
1,563 ha
3 days
FWI 44.7
Min. humidity 32 %
Sutera fire, August 2021
432 ha
1 day
FWI 42.1
Min. humidity 32 %
27 km away, in 2021
First rain (1 mm or more) after it ended: none in the following ten days.
Agrigento fire, July 2025
129 ha
4 days
FWI 44.2
Min. humidity 34 %
8 km away, in 2025
First rain (1 mm or more) after it ended: none in the following ten days.
Naro fire, July 2020
201 ha
2 days
FWI 48.2
Min. humidity 32 %
33 km away, in 2020
First rain (1 mm or more) after it ended: 2.7 mm on 14 Jul.
Sant'Angelo Muxaro fire, July 2016
158 ha
1 day
FWI 46.9
Min. humidity 31 %
4 km away, in 2016
First rain (1 mm or more) after it ended: none in the following ten days.
Siculiana fire, July 2016
707 ha
3 days
FWI 46.8
Min. humidity 31 %
10 km away, in 2016
First rain (1 mm or more) after it ended: none in the following ten days.
What happened to them
- 2 days
- median duration
- 200 ha
- median area
- 0 %
- went past 1,000 ha
- 2.3 mm
- rain at the end (median; 7 of 25 had it)
It was 7.8 times larger than the median of its twins and lasted 3 days, against 2 days.
None of its 25 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 18 of 25, 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 2.3 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
1.0 mmfirst rain
17 Jul4 days after it ended
41km/h · max. gust
It was considered over on 13 Jul, and on 17 Jul 1.0 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 7 of 25, with a median of 2.3 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 · 4 Jul 2021
After · 20 Jul 2021
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 12 July 2021 the air beside the fire reached 23 µg/m³ of PM2.5. That day averaged 16: 1.1 times the WHO daily guideline (15).
PM2.5 peak23 µg/m³
Days over the guideline2 days
PM1040 µg/m³
WHO 15
9 Jul11 Jul13 Jul15 Jul
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 · 43Every 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
- 1,370 haCattolica EracleaJune 2025 · 7 days · 4 km away
- 2,265 haBivonaJuly 2026 · 2 days · 10 km away
- 6,516 haCastronovo di Sicilia20 July 2026 · 5 days · 16 km away
- 2,154 haCastronovo di Sicilia19 July 2026 · 4 days · 26 km away
- 1,409 haSuteraJuly 2026 · 3 days · 26 km away
- 1,694 haCampofioritoAugust 2017 · 3 days · 31 km away
Frequently asked questions
- How long did the Cianciana fire last?
- Copernicus dates it between 11 July 2021 and 13 July 2021: 3 days between the first and last image with fire.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 1,563 hectares (15.6 km²). Official national figures may differ.
- Which municipalities burned?
- The fire entered 4 municipalities: Cianciana (949 ha, 25 %); Cattolica Eraclea (313 ha, 5.0 %); Sant'Angelo Muxaro (300 ha, 4.7 %); Alessandria della Rocca (4 ha, 0.1 %).
- Did the fire reach a town?
- The fire came within 1.8 km of the centre of Cattolica Eraclea, the closest of the areas it touched. That is the distance from the perimeter, or the nearest hotspot, to the point marking the centre; it does not mean it entered the houses.
- What was the weather like?
- During the fire the temperature reached 31.4 °C, humidity dropped to 32 % and gusts hit 41 km/h. The fire danger index (FWI) reached 45, class Very high.
- Where does this data come from?
- From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Italy (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: 25. Their median duration was 2 days and their median area 200 ha; 0 % went past 1,000 ha. None of its 25 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 18 of 25, 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 2.3 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 · 1515 · 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. 43 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 ADM4 (Creative Commons Attribution 3.0 License). 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.