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LB · Lebanon · –

Marjaayoun fire, 5 August 2026 Marjaayoun, Bent Jbail

Out · last detection 14 Aug 2026, 11:55 UTC

The fire started on 5 August 2026 in Marjaayoun, Lebanon, and satellites saw it burning for 19 days. Copernicus mapped a burnt perimeter of 203 hectares from satellite imagery, spread across 2 municipalities.

It is the 11th largest in Nabatîyé since 2016 (of 39 with a page). Number 6 in Lebanon in 2026, of 18.

The power measured by the satellite is low (14.1 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.

Compare with…

Suggestions: Hasbaya · 2026Hasbaya · 2024Zefat · 2024Golan · 2024

Burnt area
203ha
Copernicus perimeter
Duration
≈ 19days
5 Aug 2026 – 23 Aug 2026
Municipalities hit
2
districts
Started on
5 Aug
2026
Heat detections
2
in a single hotspot: 14 MW
Danger at start
24
High · FWI index
Average daily power
22MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 5 Aug23 Aug

How it evolved, day by day

14 Aug 2026 · 22 MW · 2

Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.

The weather it burned in

32°high
45km/h · peak gust
19%lowest humidity

It had gone more than two months without rain (1 mm or more) when it started. Rain came after the fire: 2.7 mm on 29 Aug.

This area had burned before

5% of the perimeter overlaps earlier fires recorded since 2016: 10 ha in 2025.

What happened to each town

  1. Marjaayoun where it started
    165 ha reached on 14 Aug
    0.6 %
  2. Bent Jbail
    38 ha
    0.1 %

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 land94 %
  • Agricultural areas6.1 %

Land cover inside the perimeter as reported by Copernicus EFFIS (outside the Corine Land Cover area).

People and buildings inside the perimeter

GHSL 2025
Built-up area0.31 ha
Residents< 20

Inside the perimeter there were about 0.31 hectares of 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)
5 Aug 31.7 °C 43 % 31 km/h 0.0 mm High 24
6 Aug 29.1 °C 48 % 36 km/h 0.0 mm High 26
7 Aug 29.1 °C 57 % 38 km/h 0.0 mm High 23
8 Aug 29.5 °C 61 % 40 km/h 0.0 mm High 22
9 Aug 30.5 °C 47 % 45 km/h 0.0 mm High 25
10 Aug 31.0 °C 29 % 37 km/h 0.0 mm High 31
11 Aug 31.3 °C 19 % 39 km/h 0.0 mm Very high 39
12 Aug 30.7 °C 39 % 40 km/h 0.0 mm High 33
13 Aug 30.1 °C 39 % 39 km/h 0.0 mm High 33
14 Aug 29.3 °C 57 % 41 km/h 0.2 mm High 25
15 Aug 30.6 °C 53 % 37 km/h 0.1 mm High 25
16 Aug 29.9 °C 47 % 40 km/h 0.0 mm High 26
17 Aug 29.1 °C 48 % 37 km/h 0.4 mm High 24
18 Aug 28.6 °C 52 % 38 km/h 0.0 mm High 25
19 Aug 28.9 °C 57 % 37 km/h 0.0 mm High 23
20 Aug 30.1 °C 46 % 36 km/h 0.0 mm High 24
21 Aug 31.8 °C 58 % 33 km/h 0.0 mm High 23
22 Aug 30.6 °C 59 % 38 km/h 0.4 mm High 24
23 Aug 29.9 °C 55 % 40 km/h 0.3 mm High 24
24 Aug after 30.1 °C 43 % 36 km/h 0.0 mm High 26
25 Aug after 30.1 °C 23 % 36 km/h 0.0 mm High 35
26 Aug after 31.2 °C 48 % 38 km/h 0.0 mm High 29
27 Aug after 30.9 °C 43 % 35 km/h 0.0 mm High 29
28 Aug after 30.0 °C 52 % 40 km/h 0.0 mm High 28
29 Aug after 30.6 °C 43 % 55 km/h 2.7 mm Moderate 17

Its twins: fires that started in the same weather

It started with an FWI of 23.6, a minimum humidity of 43% and more than two months without rain. Fires in the area that started in weather like this since 2016: 16.

FWI at the start 23.6
Minimum humidity 43 %
Days without rain 60+
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Hasbaya fire, July 2026
172 ha 2 days FWI 25.8 Min. humidity 43 % 17 km away, in 2026

First rain (1 mm or more) after it ended: none in the following ten days.

See its page Compare with this fire

What happened to them

1 day
median duration
169 ha
median area
0 %
went past 1,000 ha
3.8 mm
rain at the end (median; 2 of 16 had it)

It burned an area similar to its twins (203 ha against a median of 169 ha) and lasted 19 days, against 1 day.

In 14 of 16, 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 3.8 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

2.7 mmfirst rain
29 Aug6 days after it ended
45km/h · max. gust

It was considered over on 23 Aug, and on 29 Aug 2.7 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 2 of 16, with a median of 3.8 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.

How we calculate it

Before and after, from space

Drag the line to compare the same ground before the fire and after it.

Before · 29 Jul 2026
After · 30 Aug 2026

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 20 August 2026 the air beside the fire reached 32 µg/m³ of PM2.5. That day averaged 22: 1.5 times the WHO daily guideline (15).

PM2.5 peak32 µg/m³
Days over the guideline3 days
PM1037 µg/m³
Optical depth0.43
3 Aug8 Aug13 Aug18 Aug23 Aug
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 · 2Every 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 timeSatelliteFRP (MW)LatLon

Other fires nearby

All fires in Lebanon

Frequently asked questions

How long did the Marjaayoun fire last?
The official perimeter only gives the start date (8 August 2026). The end comes from the heat detections inside the perimeter: it burned until 23 August 2026 (19 days from 5 August 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 203 hectares (2.0 km²). Official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Marjaayoun (165 ha, 0.6 %); Bent Jbail (38 ha, 0.1 %).
What was the weather like?
During the fire the temperature reached 31.8 °C, humidity dropped to 19 % and gusts hit 45 km/h. The fire danger index (FWI) reached 39, class Very high.
Where does this data come from?
From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Lebanon (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: 16. Their median duration was 1 day and their median area 169 ha; 0 % went past 1,000 ha. In 14 of 16, 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 3.8 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.

Satellite cross-check

History of this page · 2 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
  1. Last day with fire: 8 August 2026 → 23 August 2026.
  2. Start date: 8 August 2026 → 5 August 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.

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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. 2 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.

How we build fire pages: methodology

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 (Public Domain). 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.