Burned area
satellite only242ha
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.
EL · Greece · –
Alexandroupolis fire, 13 September 2020 Αλεξανδρούπολη · Alexandroupolis
Out · last detection 15 Sept 2020, 11:28 UTC
The fire started on 13 September 2020 in Alexandroupolis, Greece, and satellites saw it burning for 3 days. Copernicus mapped a burnt perimeter of 242 hectares from satellite imagery, spread across a single municipality.
It is the 19th largest in Eastern Macedonia and Thrace since 2016 (of 27 with a page). Number 10 in Greece in 2020, of 22.
The power measured by the satellite is low (21.7 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 only3days
13 Sept 2020 to 15 Sept 2020: first and last day with fire on the page.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 15 Sept 2020, 11:28 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 only13 Sept 2020
First day with fire seen by the satellites or the perimeter.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 13 Sept 2020
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only9
VIIRS detections at 375 m. Most intense hotspot: 22 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 13 Sept 2020 – 15 Sept 2020
+− 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 only123MW
Total radiative power on 13 September 2020; hotspots that day: 8.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 13 Sept 2020
+− 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
model53.0FWI · extreme
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 23.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 13 Sept 2020, 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
model30.6°C · 31% RH
High of 30.6 °C and minimum humidity of 31% on 13 September 2020; gusts of 63 km/h on 14 September 2020.
- Source
- weather model at the fire’s grid cell
- Date
- 13 Sept 2020 – 15 Sept 2020
- 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
- 242 ha
- Dates
- 13 Sept 2020 – 15 Sept 2020
- Name
- Alexandroupolis
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/alexandroupolis-2020-09?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 alexandroupolis-2020-09.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020-09-13 | 8 | 123 | 30.6 | 19.4 | 31 | 25.3 | 54.4 | 0.2 | 53 | extremo | 1 |
| 2020-09-14 | 0 | 0 | 30.6 | 22.2 | 21 | 29.3 | 63 | 0 | 74.9 | muy_extremo | 1 |
| 2020-09-15 | 1 | 5 | 30.6 | 20.4 | 34 | 28.4 | 60.5 | 0 | 63.8 | extremo | 1 |
| 2020-09-16 | 0 | 0 | 29.4 | 18 | 41 | 27.8 | 59.4 | 0 | 55.4 | extremo | 0 |
| 2020-09-17 | 0 | 0 | 29.5 | 16.6 | 38 | 18.3 | 40.3 | 0 | 38.9 | muy_alto | 0 |
| 2020-09-18 | 0 | 0 | 28.7 | 18 | 42 | 23.6 | 50 | 0 | 43.2 | muy_alto | 0 |
| 2020-09-19 | 0 | 0 | 25 | 15.2 | 36 | 27.7 | 60.1 | 0 | 56.8 | extremo | 0 |
| 2020-09-20 | 0 | 0 | 23.1 | 13 | 38 | 25.3 | 54.4 | 0 | 49.3 | muy_alto | 0 |
| 2020-09-21 | 0 | 0 | 26.1 | 16.5 | 38 | 24.5 | 52.2 | 0 | 46.9 | muy_alto | 0 |
| 2020-09-22 | 0 | 0 | 27.2 | 15 | 34 | 16.6 | 37.4 | 0 | 36.1 | alto | 0 |
| 2020-09-23 | 0 | 0 | 25.6 | 12.9 | 50 | 15 | 32.4 | 0 | 27.4 | alto | 0 |
| 2020-09-24 | 0 | 0 | 25.7 | 15.3 | 52 | 13.5 | 33.1 | 0.9 | 29.9 | alto | 0 |
| 2020-09-25 | 0 | 0 | 25.6 | 14.8 | 56 | 17.4 | 38.2 | 0 | 21.1 | moderado | 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
- 242ha
- Copernicus perimeter
- Duration
- 3days
- 13 Sept 2020 – 15 Sept 2020
- Municipalities hit
- 1
- municipalities
- Started on
- 13 Sept
- 2020
- Heat detections
- 9
- in a single hotspot: 22 MW
- Danger at start
- 53
- Extreme · FWI index
- Average daily power
- 64MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
13 Sept15 Sept
15 Sept 2020
How it evolved, day by day
13 Sept
15 Sept
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
63km/h · peak gust
21%lowest humidity
It had gone 23 days without rain (1 mm or more) when it started.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
What happened to each town
-
242 ha reached on 13 Sept0.2 %
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.
What burned
- Agricultural areas88 %
- Scrub and transitional woodland12 %
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 Extreme FWI: 64 % of the area in Greece Strong wind: 51 % of the area in Greece
| Day | High | Min. humidity | Peak gust | Rain | Danger (FWI) |
|---|---|---|---|---|---|
| 13 Sept | 30.6 °C | 31 % | 54 km/h | 0.2 mm | Extreme 53 |
| 14 Sept | 30.6 °C | 21 % | 63 km/h | 0.0 mm | Very extreme 75 |
| 15 Sept | 30.6 °C | 34 % | 60 km/h | 0.0 mm | Extreme 64 |
| 16 Sept after | 29.4 °C | 41 % | 59 km/h | 0.0 mm | Extreme 55 |
| 17 Sept after | 29.5 °C | 38 % | 40 km/h | 0.0 mm | Very high 39 |
| 18 Sept after | 28.7 °C | 42 % | 50 km/h | 0.0 mm | Very high 43 |
| 19 Sept after | 25.0 °C | 36 % | 60 km/h | 0.0 mm | Extreme 57 |
| 20 Sept after | 23.1 °C | 38 % | 54 km/h | 0.0 mm | Very high 49 |
| 21 Sept after | 26.1 °C | 38 % | 52 km/h | 0.0 mm | Very high 47 |
| 22 Sept after | 27.2 °C | 34 % | 37 km/h | 0.0 mm | High 36 |
| 23 Sept after | 25.6 °C | 50 % | 32 km/h | 0.0 mm | High 27 |
| 24 Sept after | 25.7 °C | 52 % | 33 km/h | 0.9 mm | High 30 |
| 25 Sept after | 25.6 °C | 56 % | 38 km/h | 0.0 mm | Moderate 21 |
Its twins: fires that started in the same weather
It started with an FWI of 53.0, a minimum humidity of 31% and 23 days without rain. Fires in the area that started in weather like this since 2016: 22.
FWI at the start
53.0
Minimum humidity
31 %
Days without rain
23
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Alexandroupolis fire, 13 September 2020
242 ha
3 days
FWI 53.0
Min. humidity 31 %
Pehlivanköy fire, September 2019
178 ha
1 day
FWI 58.1
Min. humidity 31 %
95 km away, in 2019
First rain (1 mm or more) after it ended: none in the following ten days.
Alexandroupolis fire, August 2023
96,610 ha
24 days
FWI 54.6
Min. humidity 29 %
3 km away, in 2023
First rain (1 mm or more) after it ended: none in the following ten days.
Topolovgrad fire, September 2023
1,968 ha
2 days
FWI 51.4
Min. humidity 33 %
108 km away, in 2023
First rain (1 mm or more) after it ended: 3.5 mm on 4 Sept.
Haskovo fire, August 2022
130 ha
1 day
FWI 55.5
Min. humidity 36 %
104 km away, in 2022
First rain (1 mm or more) after it ended: 9.4 mm on 14 Aug.
Sredets fire, July 2024
262 ha
1 day
FWI 50.4
Min. humidity 32 %
183 km away, in 2024
First rain (1 mm or more) after it ended: 1.0 mm on 19 Jul.
What happened to them
- 2 days
- median duration
- 434 ha
- median area
- 18 %
- went past 1,000 ha
- 2.9 mm
- rain at the end (median; 11 of 22 had it)
It stayed below its twins: 242 ha against a median of 434 ha. It lasted 3 days, against 2 days.
In 11 of 22, 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 2.9 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
—first rain
—no rain in ten days
63km/h · max. gust
It was considered over on 15 Sept, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 11 of 22, with a median of 2.9 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 · 6 Sept 2020
After · 22 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 · CopernicusOn 13 September 2020 the air beside the fire reached 15 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).
PM2.5 peak15 µg/m³
Days over the guideline0 days
PM1032 µg/m³
WHO 15
11 Sept13 Sept15 Sept17 Sept
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 · 9Every 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
- 96,610 haAlexandroupolis ΑλεξανδρούποληAugust 2023 · 24 days · 3 km away
- 848 haAlexandroupolis Αλεξανδρούπολη15 September 2020 · 3 days · 11 km away
- 301 haArrianon ΑρριανώνAugust 2024 · 2 days · 19 km away
- 625 haSoufliou ΣουφλίουOctober 2020 · 2 days · 20 km away
- 4,604 haSoufliou ΣουφλίουJuly 2022 · 7 days · 25 km away
- 701 haSoufliou ΣουφλίουOctober 2026 · 3 days · 38 km away
Frequently asked questions
- How long did the Alexandroupolis fire last?
- Copernicus dates it between 13 September 2020 and 15 September 2020: 3 days between the first and last image with fire.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 242 hectares (2.4 km²). Official national figures may differ.
- Which municipalities burned?
- The fire only entered Alexandroupolis (242 ha, 0.2 %).
- What was the weather like?
- During the fire the temperature reached 30.6 °C, humidity dropped to 21 % and gusts hit 63 km/h. The fire danger index (FWI) reached 75, class Very extreme.
- Where does this data come from?
- From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Greece (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: 22. Their median duration was 2 days and their median area 434 ha; 18 % went past 1,000 ha. In 11 of 22, 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 2.9 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 · 199 · 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. 9 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 ADM3 (CC0 1.0 Universal (CC0 1.0) Public Domain Dedication). 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.