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Ibba fire, 22 December 2024 Ibba, Yambio, Wulu

Out · last detection 3 Jan 2025, 23:00 UTC

The fire started on 22 December 2024 in Ibba, South Sudan, and satellites saw it burning for 12 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 5,411 hectares from heat detections, spread across 3 municipalities.

It is the 325th largest in Western Equatoria since 2016 (of 361 with a page). Number 149 in South Sudan in 2024, of 180.

Burnt area
5,411ha
GWIS perimeter (Copernicus)
Duration
12days
22 Dec 2024 – 2 Jan 2025
Municipalities hit
3
counties
Started on
22 Dec
2024
Heat detections
228
in a single hotspot: 84 MW
Danger at start
36
High · FWI index
Energy released
1.5GW
sum of detected power

Where it burned

3 Jan 2025
HOTSPOTS BY DAY 22 Dec2 Jan

How it evolved, day by day

222325262728293031123

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

The weather it burned in

36°high
41km/h · peak gust
16%lowest humidity

It had gone 26 days without rain (1 mm or more) when it started.

This area had burned before

100% of the perimeter overlaps earlier fires recorded since 2016: 2,823 ha in 2016, 2,387 ha in 2017, 43 ha in 2018, 3,271 ha in 2019, 3,919 ha in 2020, 88 ha in 2021, 5,183 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 5,412 ha that had burned before.

What happened to each town

  1. Ibba where it started
    4,431 ha reached on 15 Dec
    0.5 %
  2. 599 ha reached on 26 Dec
    0.1 %
  3. 422 ha reached on 31 Dec
    0.0 %

Burnt area inside each municipality, from crossing the GWIS perimeter with administrative boundaries. The distance is from the town centre to the nearest fire: staying a kilometre away does not mean it reached the houses.

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)
22 Dec 33.4 °C 16 % 34 km/h 0.0 mm High 36
23 Dec 35.5 °C 21 % 34 km/h 0.0 mm High 36
24 Dec 35.3 °C 19 % 28 km/h 0.0 mm High 34
25 Dec 34.6 °C 19 % 32 km/h 0.0 mm High 37
26 Dec 35.0 °C 17 % 35 km/h 0.0 mm Very high 39
27 Dec 35.1 °C 18 % 36 km/h 0.0 mm Very high 39
28 Dec 34.6 °C 22 % 37 km/h 0.0 mm Very high 41
29 Dec 35.9 °C 18 % 37 km/h 0.0 mm Very high 41
30 Dec 35.6 °C 19 % 41 km/h 0.0 mm Very high 43
31 Dec 35.2 °C 17 % 39 km/h 0.0 mm Very high 43
1 Jan 33.7 °C 16 % 38 km/h 0.0 mm Very high 44
2 Jan 34.8 °C 18 % 35 km/h 0.0 mm Very high 42
3 Jan after 35.8 °C 16 % 33 km/h 0.0 mm Very high 41
4 Jan after 36.9 °C 19 % 30 km/h 0.0 mm Very high 40
5 Jan after 37.3 °C 17 % 33 km/h 0.0 mm Very high 41
6 Jan after 36.3 °C 17 % 37 km/h 0.0 mm Very high 45
7 Jan after 35.1 °C 14 % 34 km/h 0.0 mm Very high 44
8 Jan after 35.1 °C 14 % 28 km/h 0.0 mm Very high 41
9 Jan after 35.9 °C 13 % 30 km/h 0.0 mm Very high 42
10 Jan after 36.8 °C 13 % 33 km/h 0.0 mm Very high 45
11 Jan after 34.6 °C 13 % 36 km/h 0.0 mm Very high 47
12 Jan after 34.2 °C 15 % 36 km/h 0.0 mm Very high 48

Before and after, from space

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

Before · 15 Dec 2024
After · 9 Jan 2025

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 2 January 2025 the air beside the fire reached 83 µg/m³ of PM2.5. That day averaged 49: 3.3 times the WHO daily guideline (15).

PM2.5 peak83 µg/m³
Days over the guideline17 days
PM1094 µg/m³
Optical depth0.88
20212223242526272829303112345
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 · 228Every 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 South Sudan ›

Frequently asked questions

How long did the Ibba fire last?
GWIS (Copernicus) dates it between 22 December 2024 and 2 January 2025: 12 days between the first and last heat detection of the perimeter.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 5,411 hectares (54.1 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 3 municipalities: Ibba (4,431 ha, 0.5 %); Yambio (599 ha, 0.1 %); Wulu (422 ha, 0.0 %).
What was the weather like?
During the fire the temperature reached 35.9 °C, humidity dropped to 16 % and gusts hit 41 km/h. The fire danger index (FWI) reached 44, class Very high.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of South Sudan (geoBoundaries). It is not an official report.

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

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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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.