Burned area
satellite only7,251ha
Perimeter published by EFFIS (Copernicus).
- Source
- EFFIS (Copernicus)
- Date
- perimeter revised on 22 July 2026
+− cross-check
No official record is matched to this page to compare it with.
DZ · Algeria · –
Doui Thabet fire, 18 July 2026 ذوي ثابت · Sidi Amar, Ouled Khaled, Doui Thabet
Out · last detection 25 Jul 2026, 01:54 UTC
The fire started on 18 July 2026 in Doui Thabet, Algeria, and satellites saw it burning for 8 days. Copernicus mapped a burnt perimeter of 7,251 hectares from satellite imagery, spread across 5 municipalities.
Number 10 in Algeria in 2026, of 197.
Use this data
Compare with…
Use this data
Fire page data · version 2026-10-25matches 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 only8days
18 Jul 2026 to 25 Jul 2026: first and last day with fire on the page.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 25 Jul 2026, 01:54 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 only18 Jul 2026
First day with fire seen by the satellites or the perimeter.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 18 Jul 2026
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only231
VIIRS detections at 375 m. Most intense hotspot: 166 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 18 Jul 2026 – 25 Jul 2026
+− 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 only3,573MW
Total radiative power on 22 July 2026; hotspots that day: 101.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 22 Jul 2026
+− 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
model66.1FWI · extreme
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 17.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 18 Jul 2026, 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
model41.6°C · 9% RH
High of 41.6 °C and minimum humidity of 9% on 21 July 2026; gusts of 47 km/h on 18 July 2026.
- Source
- weather model at the fire’s grid cell
- Date
- 18 Jul 2026 – 25 Jul 2026
- 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.
Living inside
model≈ 150people
Estimated residents inside the perimeter and 1.1 ha of built-up area (100 m grid, epoch 2025).
- Source
- GHSL R2023A · JRC
- Date
- calculated on 24 October 2026
+− cross-check
This is an estimate on 100 m cells, made from satellite imagery and census data: it does not mean that homes burned or that anyone was harmed. The perimeter also contains land that never burned.
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
-
logLast day with fire: 18 July 2026 → 25 July 2026.
-
· reconstructed GHSLPopulation and built-up area computed
-
· reconstructed perimeterEFFIS (Copernicus) revises the perimeter
What was saved on 25 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
- 7,251 ha
- Dates
- 18 Jul 2026 – 25 Jul 2026
- Name
- Doui Thabet
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/doui-thabet-2026-07-2?v=2026-10-25A 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 doui-thabet-2026-07-2.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-07-18 | 1 | 10 | 40.2 | 26.8 | 10 | 18.1 | 47.2 | 0 | 66.1 | extremo | 1 |
| 2026-07-19 | 0 | 0 | 40.7 | 23.8 | 10 | 17.8 | 39.2 | 0 | 65.9 | extremo | 1 |
| 2026-07-20 | 0 | 0 | 41.1 | 24.9 | 11 | 16.5 | 36.4 | 0 | 64.3 | extremo | 1 |
| 2026-07-21 | 2 | 139 | 41.6 | 24.5 | 9 | 15.7 | 36 | 0 | 63.5 | extremo | 1 |
| 2026-07-22 | 101 | 3,573 | 41.4 | 25.1 | 11 | 13.9 | 33.1 | 0.1 | 61.2 | extremo | 1 |
| 2026-07-23 | 93 | 793 | 40.2 | 22.4 | 14 | 13.3 | 32 | 2.6 | 39.5 | muy_alto | 1 |
| 2026-07-24 | 28 | 79 | 39.8 | 22.5 | 14 | 12.4 | 32.4 | 0.3 | 47.3 | muy_alto | 1 |
| 2026-07-25 | 6 | 35 | 34.6 | 21.2 | 18 | 12.3 | 33.5 | 0 | 46.9 | muy_alto | 1 |
| 2026-07-26 | 0 | 0 | 31.5 | 19 | 23 | 13 | 34.9 | 0 | 43 | muy_alto | 0 |
| 2026-07-27 | 0 | 0 | 33.7 | 17.8 | 21 | 11.6 | 33.5 | 0 | 41.9 | muy_alto | 0 |
| 2026-07-28 | 0 | 0 | 38.7 | 19 | 20 | 13.1 | 40.7 | 0 | 43.8 | muy_alto | 0 |
| 2026-07-29 | 0 | 0 | 35.7 | 21.6 | 30 | 12.8 | 34.6 | 0 | 40.4 | muy_alto | 0 |
| 2026-07-30 | 0 | 0 | 36.1 | 22.3 | 30 | 11.6 | 34.6 | 0 | 39.1 | muy_alto | 0 |
| 2026-07-31 | 0 | 0 | 36.7 | 20.3 | 22 | 12.3 | 35.6 | 0 | 40.2 | muy_alto | 0 |
| 2026-08-01 | 0 | 0 | 38 | 20.4 | 16 | 11.1 | 34.6 | 0 | 44.4 | muy_alto | 0 |
| 2026-08-02 | 0 | 0 | 38.1 | 22.6 | 18 | 13 | 34.2 | 0 | 46.7 | muy_alto | 0 |
| 2026-08-03 | 0 | 0 | 39.3 | 20 | 14 | 16.9 | 38.9 | 0.1 | 54.1 | extremo | 0 |
| 2026-08-04 | 0 | 0 | 36.1 | 20.3 | 19 | 14.7 | 37.8 | 0 | 51.2 | extremo | 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), GHSL (JRC). Open-Meteo.com · How we build fire pages: methodology
- Burnt area
- 7,251ha
- Copernicus perimeter
- Duration
- ≈ 8days
- 18 Jul 2026 – 25 Jul 2026
- Municipalities hit
- 5
- communes
- Started on
- 18 Jul
- 2026
- Heat detections
- 231
- in a single hotspot: 166 MW
- Danger at start
- 66
- Extreme · FWI index
- Average daily power
- 771MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
18 Jul25 Jul
25 Jul 2026
How it evolved, day by day
18 Jul
22 Jul
24 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
42°high
47km/h · peak gust
9%lowest humidity
It had gone 17 days without rain (1 mm or more) when it started.
This area had burned before
0% of the perimeter overlaps earlier fires recorded since 2016: 10 ha in 2020.
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
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).
Berlin boundary: geoBoundaries · Federal Agency for Cartography and Geodesy (dl-de/by-2-0).
This compares size, not location: both shapes are at the same scale, north up, centred on each other.
What happened to each town
-
3,629 ha reached on 22 Jul21 %
-
1,856 ha reached on 22 Jul9.0 %
-
899 ha reached on 18 Jul4.1 %
-
876 ha reached on 22 Jul3.6 %
-
4 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
- Other natural land44 %
- Mixed forest42 %
- Broadleaved forest7.1 %
- Agricultural areas6.8 %
Land cover inside the perimeter as reported by Copernicus EFFIS (outside the Corine Land Cover area).
People and buildings inside the perimeter
GHSL 2025Built-up area1.1 ha
Residents≈ 150
Inside the perimeter there were about 1.1 hectares of built-up land and about 150 residents (GHSL 2025, satellite-based estimate).
This is an estimate on 100 m cells, made from satellite imagery and census data: it does not mean that homes burned or that anyone was harmed. The perimeter also contains land that never burned. The GHSL 2025 epoch is a projection made from 2020 and earlier data.
Source: Global Human Settlement Layer (GHS-BUILT-S and GHS-POP R2023A), European Commission Joint Research Centre (JRC), © European Union, CC BY 4.0. Sum inside the perimeter computed by WorldFires. human-settlement.emergency.copernicus.eu
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 Very dry air: 40 % of the area in Algeria
| Day | High | Min. humidity | Peak gust | Rain | Danger (FWI) |
|---|---|---|---|---|---|
| 18 Jul | 40.2 °C | 10 % | 47 km/h | 0.0 mm | Extreme 66 |
| 19 Jul | 40.7 °C | 10 % | 39 km/h | 0.0 mm | Extreme 66 |
| 20 Jul | 41.1 °C | 11 % | 36 km/h | 0.0 mm | Extreme 64 |
| 21 Jul | 41.6 °C | 9 % | 36 km/h | 0.0 mm | Extreme 64 |
| 22 Jul | 41.4 °C | 11 % | 33 km/h | 0.1 mm | Extreme 61 |
| 23 Jul | 40.2 °C | 14 % | 32 km/h | 2.6 mm | Very high 40 |
| 24 Jul | 39.8 °C | 14 % | 32 km/h | 0.3 mm | Very high 47 |
| 25 Jul | 34.6 °C | 18 % | 34 km/h | 0.0 mm | Very high 47 |
| 26 Jul after | 31.5 °C | 23 % | 35 km/h | 0.0 mm | Very high 43 |
| 27 Jul after | 33.7 °C | 21 % | 34 km/h | 0.0 mm | Very high 42 |
| 28 Jul after | 38.7 °C | 20 % | 41 km/h | 0.0 mm | Very high 44 |
| 29 Jul after | 35.7 °C | 30 % | 35 km/h | 0.0 mm | Very high 40 |
| 30 Jul after | 36.1 °C | 30 % | 35 km/h | 0.0 mm | Very high 39 |
| 31 Jul after | 36.7 °C | 22 % | 36 km/h | 0.0 mm | Very high 40 |
| 1 Aug after | 38.0 °C | 16 % | 35 km/h | 0.0 mm | Very high 44 |
| 2 Aug after | 38.1 °C | 18 % | 34 km/h | 0.0 mm | Very high 47 |
| 3 Aug after | 39.3 °C | 14 % | 39 km/h | 0.1 mm | Extreme 54 |
| 4 Aug after | 36.1 °C | 19 % | 38 km/h | 0.0 mm | Extreme 51 |
Its twins: fires that started in the same weather
It started with an FWI of 66.1, a minimum humidity of 10% and 17 days without rain. Fires in the area that started in weather like this since 2016: 13.
FWI at the start
66.1
Minimum humidity
10 %
Days without rain
17
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Doui Thabet fire, 18 July 2026
7,251 ha
8 days
FWI 66.1
Min. humidity 10 %
Oued Sebaa fire, July 2017
279 ha
1 day
FWI 68.5
Min. humidity 13 %
84 km away, in 2017
First rain (1 mm or more) after it ended: 1.1 mm on 1 Aug.
Youb fire, July 2017
778 ha
1 day
FWI 68.0
Min. humidity 7 %
34 km away, in 2017
First rain (1 mm or more) after it ended: 1.4 mm on 1 Aug.
Lardjem fire, June 2019
459 ha
2 days
FWI 60.7
Min. humidity 10 %
161 km away, in 2019
First rain (1 mm or more) after it ended: 4.1 mm on 5 Jul.
Oued Taourira fire, July 2017
133 ha
1 day
FWI 57.3
Min. humidity 12 %
53 km away, in 2017
First rain (1 mm or more) after it ended: 1.8 mm on 15 Jul.
Oued Sebaa fire, July 2016
136 ha
2 days
FWI 76.1
Min. humidity 12 %
87 km away, in 2016
First rain (1 mm or more) after it ended: 1.2 mm on 10 Jul.
What happened to them
Fires in the area that started in similar weather: 13. 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
—first rain
—no rain in ten days
47km/h · max. gust
It was considered over on 25 Jul, and not even 1 mm fell in the following ten days: it went out without rain.
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 · 11 Jul 2026
After · 1 Aug 2026
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 20 July 2026 the air beside the fire reached 20 µg/m³ of PM2.5. That day averaged 16: 1.0 times the WHO daily guideline (15).
PM2.5 peak20 µg/m³
Days over the guideline1 day
PM1066 µg/m³
Optical depth0.45
WHO 15
16 Jul18 Jul20 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 · 231Every 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
Frequently asked questions
- How long did the Doui Thabet fire last?
- The official perimeter only gives the start date (18 July 2026). The end comes from the heat detections inside the perimeter: it burned until 25 July 2026 (8 days from 18 July 2026), the last day with detections before more than 10 days in a row without any, so it is approximate.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 7,251 hectares (72.5 km²). Official national figures may differ.
- Which municipalities burned?
- The fire entered 5 municipalities: Sidi Amar (3,629 ha, 21 %); Ouled Khaled (1,856 ha, 9.0 %); Doui Thabet (899 ha, 4.1 %); Sidi Boubekeur (876 ha, 3.6 %); Saïda (4 ha, 0.1 %).
- Did the fire reach a town?
- The fire came within 2.5 km of the centre of Sidi Amar, 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 41.6 °C, humidity dropped to 9 % and gusts hit 47 km/h. The fire danger index (FWI) reached 66, class Extreme.
- Where does this data come from?
- From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Algeria (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.
Emergency number: 14 · 1021 · Emergency number and official warnings
Satellite cross-check
History of this page · 1 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
- Last day with fire: 18 July 2026 → 25 July 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.
- The official perimeter has no end date: the end is the last day with VIIRS detections inside the perimeter before a gap of more than 10 days (150 days at most), so it is approximate. 231 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.
- Built-up area and population come from the JRC Global Human Settlement Layer (epoch 2025, 100 m cells), summed inside the perimeter: an estimate of what was there, not a damage count.
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 (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.