Burned area
satellite only223ha
Perimeter published by EFFIS (Copernicus).
- Source
- EFFIS (Copernicus)
- Date
- perimeter revised on 2 March 2022
+− cross-check
No official record is matched to this page to compare it with.
DZ · Algeria · –
El Hassania fire, July 2019 الحسنية، عين الدفلى · El Hassania, Theniet El Had
Out · last detection 27 Jul 2019, 13:08 UTC
The fire started on 25 July 2019 in El Hassania, Algeria, and satellites saw it burning for 3 days. Copernicus mapped a burnt perimeter of 223 hectares from satellite imagery, spread across 2 municipalities.
It is the 23th largest in Aïn Defla since 2016 (of 36 with a page). Number 48 in Algeria in 2019, of 78.
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
25 Jul 2019 to 27 Jul 2019: first and last day with fire on the page.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 27 Jul 2019, 13:08 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 only25 Jul 2019
First day with fire seen by the satellites or the perimeter.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 25 Jul 2019
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only11
VIIRS detections at 375 m. Most intense hotspot: 60 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 25 Jul 2019 – 27 Jul 2019
+− 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 only90MW
Total radiative power on 27 July 2019; hotspots that day: 3.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 27 Jul 2019
+− 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
model41.1FWI · very high
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 2.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 25 Jul 2019, 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
model38.8°C · 18% RH
High of 38.8 °C and minimum humidity of 18% on 25 July 2019; gusts of 56 km/h on 27 July 2019.
- Source
- weather model at the fire’s grid cell
- Date
- 25 Jul 2019 – 27 Jul 2019
- 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
- 223 ha
- Dates
- 25 Jul 2019 – 27 Jul 2019
- Name
- El Hassania
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/el-hassania-2019-07?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 el-hassania-2019-07.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019-07-25 | 1 | 7 | 38.8 | 24.1 | 18 | 13.5 | 40.7 | 0.9 | 41.1 | muy_alto | 1 |
| 2019-07-26 | 7 | 63 | 36.4 | 24.1 | 18 | 18.8 | 52.6 | 0 | 39.1 | muy_alto | 1 |
| 2019-07-27 | 3 | 90 | 31.5 | 22.8 | 18 | 22.8 | 56.5 | 0 | 68.4 | extremo | 1 |
| 2019-07-28 | 0 | 0 | 32.5 | 20.1 | 35 | 15.3 | 39.6 | 0 | 32.4 | alto | 0 |
| 2019-07-29 | 0 | 0 | 35.4 | 21.3 | 32 | 13.8 | 34.2 | 0 | 33 | alto | 0 |
| 2019-07-30 | 0 | 0 | 36.1 | 22 | 30 | 12.8 | 32.4 | 0 | 34.8 | alto | 0 |
| 2019-07-31 | 0 | 0 | 42.1 | 25 | 16 | 10.2 | 44.3 | 0 | 44.7 | muy_alto | 0 |
| 2019-08-01 | 0 | 0 | 40 | 27.7 | 19 | 19.3 | 43.6 | 1.6 | 63.9 | 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). Open-Meteo.com · How we build fire pages: methodology
- Burnt area
- 223ha
- Copernicus perimeter
- Duration
- 3days
- 25 Jul 2019 – 27 Jul 2019
- Municipalities hit
- 2
- communes
- Started on
- 25 Jul
- 2019
- Heat detections
- 11
- in a single hotspot: 60 MW
- Danger at start
- 41
- Very high · FWI index
- Average daily power
- 53MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
25 Jul27 Jul
27 Jul 2019
How it evolved, day by day
25 Jul
26 Jul
27 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
39°high
56km/h · peak gust
18%lowest humidity
It had gone 2 days without rain (1 mm or more) when it started. Rain came after the fire: 1.6 mm on 1 Aug.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
What happened to each town
-
123 ha reached on 25 Jul0.8 %
-
101 ha reached on 26 Jul0.4 %
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 forest86 %
- Other natural land10 %
- Broadleaved forest3.2 %
Land cover inside the perimeter as reported by Copernicus EFFIS (outside the Corine Land Cover area).
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) |
|---|---|---|---|---|---|
| 25 Jul | 38.8 °C | 18 % | 41 km/h | 0.9 mm | Very high 41 |
| 26 Jul | 36.4 °C | 18 % | 53 km/h | 0.0 mm | Very high 39 |
| 27 Jul | 31.5 °C | 18 % | 56 km/h | 0.0 mm | Extreme 68 |
| 28 Jul after | 32.5 °C | 35 % | 40 km/h | 0.0 mm | High 32 |
| 29 Jul after | 35.4 °C | 32 % | 34 km/h | 0.0 mm | High 33 |
| 30 Jul after | 36.1 °C | 30 % | 32 km/h | 0.0 mm | High 35 |
| 31 Jul after | 42.1 °C | 16 % | 44 km/h | 0.0 mm | Very high 45 |
| 1 Aug after | 40.0 °C | 19 % | 44 km/h | 1.6 mm | Extreme 64 |
Its twins: fires that started in the same weather
It started with an FWI of 41.1, a minimum humidity of 18% and 2 days without rain. Fires in the area that started in weather like this since 2016: 28.
FWI at the start
41.1
Minimum humidity
18 %
Days without rain
2
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · El Hassania fire, July 2019
223 ha
3 days
FWI 41.1
Min. humidity 18 %
Zoubiria fire, August 2019
346 ha
6 days
FWI 39.4
Min. humidity 19 %
77 km away, in 2019
First rain (1 mm or more) after it ended: 1.0 mm on 27 Aug.
Ouled Antar fire, July 2020
326 ha
4 days
FWI 38.4
Min. humidity 18 %
69 km away, in 2020
First rain (1 mm or more) after it ended: 1.0 mm on 22 Jul.
Ouled Hellal fire, August 2020
197 ha
2 days
FWI 43.3
Min. humidity 17 %
59 km away, in 2020
First rain (1 mm or more) after it ended: 1.1 mm on 20 Aug.
Lardjem fire, August 2019
361 ha
3 days
FWI 44.3
Min. humidity 18 %
49 km away, in 2019
First rain (1 mm or more) after it ended: 1.0 mm on 21 Aug.
Ouled Hellal fire, June 2020
150 ha
4 days
FWI 46.4
Min. humidity 18 %
53 km away, in 2020
First rain (1 mm or more) after it ended: 2.7 mm on 10 Jul.
What happened to them
- 3 days
- median duration
- 194 ha
- median area
- 11 %
- went past 1,000 ha
- 1.4 mm
- rain at the end (median; 13 of 28 had it)
It burned an area similar to its twins (223 ha against a median of 194 ha) and lasted 3 days, against 3 days.
In 15 of 28, 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 1.4 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
1.6 mmfirst rain
1 Aug5 days after it ended
56km/h · max. gust
It was considered over on 27 Jul, and on 1 Aug 1.6 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 13 of 28, with a median of 1.4 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 · 18 Jul 2019
After · 3 Aug 2019
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 26 July 2019 the air beside the fire reached 21 µg/m³ of PM2.5. That day averaged 19: 1.3 times the WHO daily guideline (15).
PM2.5 peak21 µg/m³
Days over the guideline1 day
PM1051 µg/m³
WHO 15
23 Jul25 Jul27 Jul29 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 · 11Every 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
- 6,218 haTheniet El Had ثنية الأحدJune 2019 · 5 days · 8 km away
- 756 haBathia بطحيةSeptember 2020 · 9 days · 22 km away
- 4,006 haOued Djemaa وادي الجمعةJune 2019 · 6 days · 32 km away
- 2,201 haOued Djemaa وادي الجمعةJuly 2026 · 5 days · 38 km away
- 1,286 haOued Djemaa وادي الجمعةAugust 2020 · 5 days · 40 km away
Frequently asked questions
- How long did the El Hassania fire last?
- Copernicus dates it between 25 July 2019 and 27 July 2019: 3 days between the first and last image with fire.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 223 hectares (2.2 km²). Official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: El Hassania (123 ha, 0.8 %); Theniet El Had (101 ha, 0.4 %).
- Did the fire reach a town?
- The fire started in El Hassania and came within 4.1 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 38.8 °C, humidity dropped to 18 % and gusts hit 56 km/h. The fire danger index (FWI) reached 68, 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.
- 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: 28. Their median duration was 3 days and their median area 194 ha; 11 % went past 1,000 ha. In 15 of 28, 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 1.4 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: 14 · 1021 · 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. 11 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 (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.