The fire started on 8 September 2020 in Algeciras, Spain, and satellites saw it burning for 2 days. Copernicus mapped a burnt perimeter of 188 hectares from satellite imagery, spread across a single municipality. According to EGIF (MITECO), it was detected on 8 September 2020 at 14:55 and declared extinguished on 15 September 2020.
It is the 11th largest in Cádiz since 2016 (of 16 with a page). Number 52 in Spain in 2020, of 89.
The power measured by the satellite is low (24.5 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.
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
model
24.1°C · 63% RH
High of 24.1 °C and minimum humidity of 63% on 9 September 2020; gusts of 55 km/h on 8 September 2020.
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
· reconstructedofficial
Matched with the official EGIF (MITECO) record
Matches: 171 ha in the official record (records: 1).
A 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
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
24°high
55km/h · peak gust
63%lowest humidity
It had gone more than two months without rain (1 mm or more) when it started. Rain came after the fire: 3.2 mm on 17 Sept.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
What happened to each town
Algeciras126,589 inhabitants · 6.2 km from the centrewhere it started
188 hareached on 8 Sept
2.2 %
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.
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)
It started with an FWI of 37.1, a minimum humidity of 73% and more than two months without rain. Fires in the area that started in weather like this since 2016: 1.
FWI at the start37.1
Minimum humidity73 %
Days without rain60+
this firechosen twinsrest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Algeciras fire, September 2020
188 ha2 daysFWI 37.1Min. humidity 73 %
San Roque fire, July 2022
111 ha1 dayFWI 38.0Min. humidity 56 %24 km away, in 2022
First rain (1 mm or more) after it ended: none in the following ten days.
Fires in the area that started in similar weather: 1. With fewer than 15 we give no figures: they would be more noise than signal.
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
3.2 mmfirst rain
17 Sept8 days after it ended
55km/h · max. gust
It was considered over on 9 Sept, and on 17 Sept 3.2 mm fell. We do not know whether the rain or the firefighters put it out.
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.
Drag the line to compare the same ground before the fire and after it.
↔
Before · 1 Sept 2020
After · 16 Sept 2020
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 · Copernicus
On 7 September 2020 the air beside the fire reached 12 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).
PM2.5 peak12µg/m³
Days over the guideline0days
PM1022µg/m³
6 Sept8 Sept10 Sept12 Sept
GoodFairModeratePoorVery poorExtremely 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· 4Every satellite heat detection, one by one, with time, satellite, power and coordinates.›
⬇ Download CSVTimes in UTC. Each detection is a 375 m pixel: a large fire yields hundreds per pass.
Copernicus dates it between 8 September 2020 and 9 September 2020: 2 days between the first and last image with fire. According to EGIF (MITECO), it was detected on 8 September 2020 at 14:55 and declared extinguished on 15 September 2020.
How much area did it burn?
The perimeter Copernicus measured from satellite imagery is 188 hectares (1.9 km²). Official national figures may differ.
Which municipalities burned?
The fire only entered Algeciras (188 ha, 2.2 %).
Did the fire reach a town?
The fire started in Algeciras and came within 6.2 km of its centre. 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 24.1 °C, humidity dropped to 63 % and gusts hit 55 km/h. The fire danger index (FWI) reached 37, class High.
Where does this data come from?
From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Spain (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.
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 errorHow we know this›
Perimeter: EFFIS (Copernicus), mapped on satellite imagery.
Dates from the perimeter: the VIIRS detections inside it did not change them. 4 Suomi-NPP VIIRS detections on those dates.
Compared with EGIF (MITECO): 171 official ha against 188 ha of perimeter; they agree within 25%.
Weather: Copernicus ERA5 reanalysis at the fire location, in cells of about 25 km.
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 (Creative Commons Attribution 4.0 International (CC BY 4.0)). 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.