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SD · Sudan · –

Al Leri fire, 5 December 2024 Al Leri

Out · last detection 20 Dec 2024, 11:26 UTC

The fire started on 5 December 2024 in Al Leri, Sudan, and satellites saw it burning for 15 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 8,866 hectares from heat detections, spread across a single municipality.

It is the 12th largest in South Kordofan since 2016 (of 314 with a page). Number 6 in Sudan in 2024, of 89.

Burnt area
8,866ha
GWIS perimeter (Copernicus)
Duration
15days
5 Dec 2024 – 19 Dec 2024
Municipalities hit
1
localities
Started on
5 Dec
2024
Heat detections
213
in a single hotspot: 103 MW
Danger at start
56
Extreme · FWI index
Average daily power
253MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 5 Dec19 Dec
20 Dec 2024

How it evolved, day by day

5 Dec 2024 · 517 MW · 27 6 Dec 2024 · 858 MW · 32 7 Dec 2024 · 112 MW · 10 8 Dec 2024 · 1,705 MW · 65 9 Dec 2024 · 196 MW · 18 10 Dec 2024 · 50 MW · 6 11 Dec 2024 · 64 MW · 12 12 Dec 2024 · 23 MW · 2 13 Dec 2024 · 22 MW · 9 14 Dec 2024 · 66 MW · 9 15 Dec 2024 · 16 MW · 3 16 Dec 2024 · 129 MW · 16 17 Dec 2024 · 5 MW · 1 19 Dec 2024 · 21 MW · 2 20 Dec 2024 · 4 MW · 1
5 Dec 8 Dec 11 Dec 14 Dec 17 Dec

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
47km/h · peak gust
12%lowest humidity

It had gone 39 days without rain (1 mm or more) when it started.

This area had burned before

92% of the perimeter overlaps earlier fires recorded since 2016: 3,611 ha in 2016, 2,522 ha in 2017, 1,518 ha in 2019, 2,983 ha in 2020, 4,584 ha in 2021, 2,041 ha in 2022, 2,820 ha in 2023. Part of it burned more than once, so the yearly figures add up to more than the 8,113 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 5.6% of the area of London (89 km² against 1,583 km²).

London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).

This compares size, not location: both shapes are at the same scale, north up, centred on each other.

What happened to each town

  1. Al Leri where it started
    6,797 ha reached on 5 Dec
    0.9 %

Burnt area inside each municipality, from crossing the GWIS 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.

People and buildings inside the perimeter

GHSL 2025
Built-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)
5 Dec 36.4 °C 16 % 38 km/h 0.0 mm Extreme 56
6 Dec 37.1 °C 19 % 38 km/h 0.0 mm Extreme 55
7 Dec 38.4 °C 16 % 41 km/h 0.0 mm Extreme 58
8 Dec 39.3 °C 12 % 47 km/h 0.0 mm Extreme 64
9 Dec 38.3 °C 14 % 38 km/h 0.0 mm Extreme 58
10 Dec 38.4 °C 16 % 42 km/h 0.0 mm Extreme 62
11 Dec 38.4 °C 16 % 39 km/h 0.0 mm Extreme 59
12 Dec 37.9 °C 19 % 29 km/h 0.0 mm Very high 49
13 Dec 38.4 °C 18 % 32 km/h 0.0 mm Extreme 52
14 Dec 37.4 °C 16 % 42 km/h 0.0 mm Extreme 62
15 Dec 36.9 °C 18 % 43 km/h 0.0 mm Extreme 62
16 Dec 37.6 °C 19 % 41 km/h 0.0 mm Extreme 59
17 Dec 38.3 °C 17 % 37 km/h 0.0 mm Extreme 56
18 Dec 38.4 °C 15 % 35 km/h 0.0 mm Extreme 54
19 Dec 38.3 °C 14 % 32 km/h 0.0 mm Extreme 53
20 Dec after 37.7 °C 13 % 49 km/h 0.0 mm Extreme 67
21 Dec after 36.1 °C 10 % 46 km/h 0.0 mm Extreme 66
22 Dec after 35.7 °C 13 % 42 km/h 0.0 mm Extreme 62
23 Dec after 36.0 °C 14 % 38 km/h 0.0 mm Extreme 58
24 Dec after 36.0 °C 14 % 43 km/h 0.0 mm Extreme 63
25 Dec after 36.4 °C 11 % 40 km/h 0.0 mm Extreme 61
26 Dec after 36.5 °C 10 % 40 km/h 0.0 mm Extreme 61
27 Dec after 37.0 °C 13 % 38 km/h 0.0 mm Extreme 60
28 Dec after 35.7 °C 17 % 42 km/h 0.0 mm Extreme 61
29 Dec after 37.0 °C 19 % 40 km/h 0.0 mm Extreme 59

Its twins: fires that started in the same weather

It started with an FWI of 55.8, a minimum humidity of 16% and 39 days without rain. Fires in the area that started in weather like this since 2016: 21.

FWI at the start 55.8
Minimum humidity 16 %
Days without rain 39
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Al Leri fire, December 2021
2,467 ha 1 day FWI 54.0 Min. humidity 15 % 30 km away, in 2021

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

What happened to them

8 days
median duration
3,582 ha
median area
14 %
went past 10,000 ha
—
rain at the end (median; 0 of 21 had it)

It was 2.5 times larger than the median of its twins and lasted 15 days, against 8 days.

Only 3 of its 21 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In none of them did 1 mm fall in the ten days after the end: they all went out without rain.

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 19 Dec, and not even 1 mm fell in the following ten days: it went out without rain. None of its 21 twins had rain when they ended.

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 · 28 Nov 2024
After · 26 Dec 2024

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 9 December 2024 the air beside the fire reached 156 µg/m³ of PM2.5. That day averaged 93: 6.2 times the WHO daily guideline (15).

PM2.5 peak156 µg/m³
Days over the guideline17 days
PM10163 µg/m³
Optical depth1.57
3 Dec7 Dec11 Dec15 Dec19 Dec
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 · 213Every 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 Sudan

Frequently asked questions

How long did the Al Leri fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 5 December 2024 to 19 December 2024 (15 days). The perimeter dates it from 5 December 2024 to 16 December 2024.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 8,866 hectares (88.7 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Al Leri (6,797 ha, 0.9 %).
What was the weather like?
During the fire the temperature reached 39.3 °C, humidity dropped to 12 % and gusts hit 47 km/h. The fire danger index (FWI) reached 64, class Extreme.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Sudan (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: 21. Their median duration was 8 days and their median area 3,582 ha; 14 % went past 10,000 ha. Only 3 of its 21 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In none of them did 1 mm fall in the ten days after the end: they all went out without rain.

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 · 1 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
  1. Last day with fire: 16 December 2024 → 19 December 2024.

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: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery; 2 polygons grouped in this page.
  • Dates adjusted with the VIIRS detections inside the perimeter, which said 5 December 2024 to 16 December 2024. 213 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 comes from the Copernicus Global Wildfire Information System (GWIS), which rebuilds it from MODIS and VIIRS heat detections and publishes it under CC BY 4.0. It is not measured on imagery as in Europe, so it is an estimate. 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 (Creative Commons Attribution 3.0 Intergovernmental Organisations (CC BY 3.0 IGO)). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ from each country’s official figure.