Burned area
satellite only167ha
Perimeter published by EFFIS (Copernicus).
- Source
- EFFIS (Copernicus)
- Date
- perimeter revised on 23 June 2025
+− cross-check
No official record is matched to this page to compare it with.
TN · Tunisia ·
الوسلاتية fire, June 2025 الوسلاتية
Out · last detection 20 Jun 2025, 13:03 UTC
The fire started on 20 June 2025 in الوسلاتية, Tunisia, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 167 hectares from satellite imagery, spread across a single municipality.
Number 9 in Tunisia in 2025, of 12.
The power measured by the satellite is low (6.1 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 only1day
20 Jun 2025 to 20 Jun 2025: first and last day with fire on the page.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 20 Jun 2025, 13:03 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 only20 Jun 2025
First day with fire seen by the satellites or the perimeter.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 20 Jun 2025
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only6
VIIRS detections at 375 m. Most intense hotspot: 6 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 20 Jun 2025 – 20 Jun 2025
+− 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 only32MW
Total radiative power on 20 June 2025; hotspots that day: 6.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 20 Jun 2025
+− 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
model36.7FWI · high
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 26.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 20 Jun 2025, 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 · 35% RH
High of 30.6 °C and minimum humidity of 35% on 20 June 2025; gusts of 49 km/h on 20 June 2025.
- Source
- weather model at the fire’s grid cell
- Date
- 20 Jun 2025 – 20 Jun 2025
- 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 GHSLPopulation and built-up area computed
-
· 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
- 167 ha
- Dates
- 20 Jun 2025 – 20 Jun 2025
- Name
- الوسلاتية
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/alwslatyt-2025-06?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 alwslatyt-2025-06.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-06-20 | 6 | 32 | 30.6 | 19.7 | 35 | 19.1 | 49 | 0.1 | 36.7 | alto | 1 |
| 2025-06-21 | 0 | 0 | 33 | 19.2 | 26 | 15 | 37.1 | 0 | 36.1 | alto | 0 |
| 2025-06-22 | 0 | 0 | 34.1 | 18.4 | 23 | 16.7 | 37.8 | 0 | 40.8 | muy_alto | 0 |
| 2025-06-23 | 0 | 0 | 34.9 | 21.2 | 23 | 14.7 | 32.8 | 0 | 39.8 | muy_alto | 0 |
| 2025-06-24 | 0 | 0 | 35.2 | 19.8 | 22 | 15.9 | 35.3 | 0 | 42.1 | muy_alto | 0 |
| 2025-06-25 | 0 | 0 | 37.5 | 21.2 | 19 | 15.4 | 33.1 | 0 | 45.6 | muy_alto | 0 |
| 2025-06-26 | 0 | 0 | 36.9 | 23.3 | 24 | 15.4 | 33.8 | 0 | 46 | muy_alto | 0 |
| 2025-06-27 | 0 | 0 | 36.8 | 21 | 25 | 14.1 | 38.5 | 0 | 45 | muy_alto | 0 |
| 2025-06-28 | 0 | 0 | 34.2 | 23 | 28 | 18.9 | 44.6 | 0 | 47.2 | muy_alto | 0 |
| 2025-06-29 | 0 | 0 | 33.7 | 21.3 | 31 | 15.1 | 37.4 | 0 | 40.8 | muy_alto | 0 |
| 2025-06-30 | 0 | 0 | 33.6 | 21.1 | 30 | 12.6 | 31.3 | 0 | 38.7 | muy_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), GHSL (JRC). Open-Meteo.com · How we build fire pages: methodology
- Burnt area
- 167ha
- Copernicus perimeter
- Duration
- 1day
- 20 Jun 2025 – 20 Jun 2025
- Municipalities hit
- 1
- delegations
- Started on
- 20 Jun
- 2025
- Heat detections
- 6
- in a single hotspot: 6 MW
- Danger at start
- 37
- High · FWI index
- Average daily power
- 32MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
20 Jun20 Jun
How it evolved, day by day
20 Jun 2025 · 32 MW · 6
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
49km/h · peak gust
35%lowest humidity
It had gone 26 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
-
الوسلاتية where it started168 ha reached on 20 Jun0.2 %
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
- Sclerophyllous scrub95 %
- Coniferous forest3.6 %
- Other natural land1.8 %
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 area< 0.1 ha
Residents< 20
Inside the perimeter there was no noticeable built-up land and almost nobody lived there (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)
| Day | High | Min. humidity | Peak gust | Rain | Danger (FWI) |
|---|---|---|---|---|---|
| 20 Jun | 30.6 °C | 35 % | 49 km/h | 0.1 mm | High 37 |
| 21 Jun after | 33.0 °C | 26 % | 37 km/h | 0.0 mm | High 36 |
| 22 Jun after | 34.1 °C | 23 % | 38 km/h | 0.0 mm | Very high 41 |
| 23 Jun after | 34.9 °C | 23 % | 33 km/h | 0.0 mm | Very high 40 |
| 24 Jun after | 35.2 °C | 22 % | 35 km/h | 0.0 mm | Very high 42 |
| 25 Jun after | 37.5 °C | 19 % | 33 km/h | 0.0 mm | Very high 46 |
| 26 Jun after | 36.9 °C | 24 % | 34 km/h | 0.0 mm | Very high 46 |
| 27 Jun after | 36.8 °C | 25 % | 38 km/h | 0.0 mm | Very high 45 |
| 28 Jun after | 34.2 °C | 28 % | 45 km/h | 0.0 mm | Very high 47 |
| 29 Jun after | 33.7 °C | 31 % | 37 km/h | 0.0 mm | Very high 41 |
| 30 Jun after | 33.6 °C | 30 % | 31 km/h | 0.0 mm | Very high 39 |
Its twins: fires that started in the same weather
It started with an FWI of 36.7, a minimum humidity of 35% and 26 days without rain. Fires in the area that started in weather like this since 2016: 17.
FWI at the start
36.7
Minimum humidity
35 %
Days without rain
26
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · الوسلاتية fire, June 2025
167 ha
1 day
FWI 36.7
Min. humidity 35 %
نبر fire, July 2016
530 ha
10 days
FWI 35.3
Min. humidity 33 %
103 km away, in 2016
First rain (1 mm or more) after it ended: none in the following ten days.
ساقية سيدي يوسف fire, August 2016
105 ha
8 days
FWI 37.4
Min. humidity 35 %
133 km away, in 2016
First rain (1 mm or more) after it ended: 1.2 mm on 30 Aug.
سبيطلة fire, August 2019
111 ha
5 days
FWI 38.1
Min. humidity 32 %
92 km away, in 2019
First rain (1 mm or more) after it ended: 1.0 mm on 27 Aug.
سجنان fire, October 2026
161 ha
4 days
FWI 33.0
Min. humidity 35 %
154 km away, in 2026
First rain (1 mm or more) after it ended: none in the following ten days.
غار الدماء fire, August 2020
142 ha
2 days
FWI 39.2
Min. humidity 35 %
131 km away, in 2020
First rain (1 mm or more) after it ended: 1.8 mm on 2 Sept.
What happened to them
- 4 days
- median duration
- 395 ha
- median area
- 6 %
- went past 1,000 ha
- 1.2 mm
- rain at the end (median; 8 of 17 had it)
It stayed below its twins: 167 ha against a median of 395 ha. It lasted 1 day, against 4 days.
In 9 of 17, 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 1.2 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
49km/h · max. gust
It was considered over on 20 Jun, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 8 of 17, with a median of 1.2 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 · 13 Jun 2025
After · 27 Jun 2025
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 22 June 2025 the air beside the fire reached 12 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).
PM2.5 peak12 µg/m³
Days over the guideline0 days
PM1018 µg/m³
Optical depth0.41
18 Jun20 Jun22 Jun
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 · 6Every 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 الوسلاتية fire last?
- Copernicus dates it between 20 June 2025 and 20 June 2025: 1 day between the first and last image with fire.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 167 hectares (1.7 km²). Official national figures may differ.
- Which municipalities burned?
- The fire only entered الوسلاتية (168 ha, 0.2 %).
- What was the weather like?
- During the fire the temperature reached 30.6 °C, humidity dropped to 35 % and gusts hit 49 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 Tunisia (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: 17. Their median duration was 4 days and their median area 395 ha; 6 % went past 1,000 ha. In 9 of 17, 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 1.2 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: 198 · 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. 6 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 ADM2 (Open Data Commons Open Database License 1.0). 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.