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SD · Sudan · –

Al Leri fire, 18 November 2019 Al Leri

Out · last detection 4 Dec 2019, 23:16 UTC

The fire started on 18 November 2019 in Al Leri, Sudan, and satellites saw it burning for 17 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 6,425 hectares from heat detections, spread across a single municipality.

It is the 28th largest in South Kordofan since 2016 (of 314 with a page). Number 10 in Sudan in 2019, of 132.

Burnt area
6,425ha
GWIS perimeter (Copernicus)
Duration
17days
18 Nov 2019 – 4 Dec 2019
Municipalities hit
1
localities
Started on
18 Nov
2019
Heat detections
188
in a single hotspot: 132 MW
Danger at start
35
High · FWI index
Average daily power
167MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 18 Nov4 Dec
4 Dec 2019

How it evolved, day by day

19 Nov 2019 · 85 MW · 7 25 Nov 2019 · 71 MW · 13 26 Nov 2019 · 164 MW · 37 27 Nov 2019 · 524 MW · 60 28 Nov 2019 · 512 MW · 47 29 Nov 2019 · 123 MW · 18 30 Nov 2019 · 3 MW · 1 2 Dec 2019 · 22 MW · 3 4 Dec 2019 · 1 MW · 2
19 Nov 27 Nov 30 Nov 4 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

37°high
34km/h · peak gust
14%lowest humidity

It had gone 23 days without rain (1 mm or more) when it started.

This area had burned before

33% of the perimeter overlaps earlier fires recorded since 2016: 21 ha in 2016, 2,111 ha in 2017.

How big is it?

10 km
It burned the equivalent of 4.1% of the area of London (64 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
    6,467 ha reached on 19 Nov
    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 2020
Built-up area< 0.1 ha
Residents< 20

Inside the perimeter there was no noticeable built-up land and almost nobody lived there (GHSL 2020, 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.

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)
18 Nov 35.9 °C 20 % 34 km/h 0.0 mm High 35
19 Nov 36.2 °C 16 % 25 km/h 0.0 mm High 33
20 Nov 36.0 °C 14 % 21 km/h 0.0 mm High 36
21 Nov 35.5 °C 18 % 29 km/h 0.0 mm Very high 39
22 Nov 35.4 °C 20 % 26 km/h 0.0 mm High 37
23 Nov 35.1 °C 19 % 22 km/h 0.0 mm High 37
24 Nov 35.4 °C 19 % 27 km/h 0.0 mm Very high 38
25 Nov 34.6 °C 21 % 27 km/h 0.0 mm Very high 38
26 Nov 35.6 °C 18 % 31 km/h 0.0 mm Very high 42
27 Nov 36.0 °C 23 % 23 km/h 0.0 mm High 36
28 Nov 36.7 °C 17 % 27 km/h 0.0 mm Very high 40
29 Nov 36.6 °C 18 % 28 km/h 0.0 mm Very high 42
30 Nov 35.5 °C 19 % 25 km/h 0.0 mm Very high 44
1 Dec 35.7 °C 17 % 22 km/h 0.0 mm Very high 41
2 Dec 36.0 °C 18 % 26 km/h 0.0 mm Very high 42
3 Dec 36.6 °C 17 % 31 km/h 0.0 mm Very high 45
4 Dec 36.2 °C 14 % 29 km/h 0.0 mm Very high 45
5 Dec after 35.5 °C 16 % 27 km/h 0.0 mm Very high 43
6 Dec after 36.0 °C 18 % 28 km/h 0.0 mm Very high 47
7 Dec after 36.0 °C 19 % 36 km/h 0.0 mm Extreme 51
8 Dec after 36.1 °C 18 % 37 km/h 0.0 mm Extreme 52
9 Dec after 34.9 °C 17 % 32 km/h 0.0 mm Very high 49
10 Dec after 32.1 °C 22 % 24 km/h 0.1 mm Very high 42
11 Dec after 35.4 °C 18 % 23 km/h 0.0 mm Very high 39
12 Dec after 36.6 °C 17 % 25 km/h 0.0 mm Very high 40
13 Dec after 35.0 °C 16 % 28 km/h 0.0 mm Very high 43
14 Dec after 35.7 °C 15 % 29 km/h 0.0 mm Very high 44

Its twins: fires that started in the same weather

It started with an FWI of 34.7, a minimum humidity of 20% and 23 days without rain. Fires in the area that started in weather like this since 2016: 32.

FWI at the start 34.7
Minimum humidity 20 %
Days without rain 23
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Keilak fire, November 2021
2,145 ha 18 days FWI 38.2 Min. humidity 20 % 104 km away, in 2021

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

What happened to them

9 days
median duration
3,395 ha
median area
12 %
went past 10,000 ha
2.9 mm
rain at the end (median; 1 of 32 had it)

It was 1.9 times larger than the median of its twins and lasted 17 days, against 9 days.

Only 8 of its 32 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 31 of 32, 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 2.9 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
34km/h · max. gust

It was considered over on 4 Dec, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 1 of 32, with a median of 2.9 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 · 11 Nov 2019
After · 11 Dec 2019

If the day is cloudy, change the date: each satellite passes once a day. In false colour the burnt ground looks brown or red.

Detections table · 188Every 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 18 November 2019 to 4 December 2019 (17 days). The perimeter dates it from 25 November 2019 to 29 November 2019.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 6,425 hectares (64.2 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Al Leri (6,467 ha, 0.9 %).
What was the weather like?
During the fire the temperature reached 36.7 °C, humidity dropped to 14 % and gusts hit 34 km/h. The fire danger index (FWI) reached 45, class Very high.
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: 32. Their median duration was 9 days and their median area 3,395 ha; 12 % went past 10,000 ha. Only 8 of its 32 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 31 of 32, 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 2.9 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: 29 November 2019 → 4 December 2019.
  2. Start date: 25 November 2019 → 18 November 2019.

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.
  • Dates adjusted with the VIIRS detections inside the perimeter, which said 25 November 2019 to 29 November 2019. 188 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 2020, 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.