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SS · South Sudan · –

Raga fire, 3 December 2021 Wau, Raga

Out · last detection 13 Dec 2021, 23:44 UTC

The fire started on 3 December 2021 in Raga, South Sudan, and satellites saw it burning for 12 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 5,174 hectares from heat detections, spread across 2 municipalities.

It is the 321th largest in Western Bahr el Ghazal since 2016 (of 338 with a page). Number 202 in South Sudan in 2021, of 212.

Compare with…
Burnt area
5,174ha
GWIS perimeter (Copernicus)
Duration
12days
3 Dec 2021 – 14 Dec 2021
Municipalities hit
2
counties
Started on
3 Dec
2021
Heat detections
146
in a single hotspot: 137 MW
Danger at start
36
High · FWI index
Average daily power
333MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 3 Dec14 Dec
13 Dec 2021

How it evolved, day by day

3 Dec 2021 · 4 MW · 1 6 Dec 2021 · 8 MW · 2 7 Dec 2021 · 400 MW · 39 8 Dec 2021 · 922 MW · 30 9 Dec 2021 · 475 MW · 25 10 Dec 2021 · 1,124 MW · 30 11 Dec 2021 · 22 MW · 4 12 Dec 2021 · 42 MW · 12 13 Dec 2021 · 2 MW · 3
3 Dec 7 Dec 10 Dec 13 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

38°high
39km/h · peak gust
11%lowest humidity

It had gone 28 days without rain (1 mm or more) when it started.

This area had burned before

93% of the perimeter overlaps earlier fires recorded since 2016: 4,249 ha in 2016, 2,895 ha in 2017, 235 ha in 2018, 2,660 ha in 2019, 2,162 ha in 2020. Part of it burned more than once, so the yearly figures add up to more than the 4,824 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 3.3% of the area of London (52 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. Wau
    3,950 ha reached on 7 Dec
    0.2 %
  2. Raga where it started
    1,255 ha reached on 3 Dec
    0.0 %

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)
3 Dec 36.2 °C 22 % 29 km/h 0.0 mm High 36
4 Dec 37.8 °C 15 % 31 km/h 0.0 mm Very high 43
5 Dec 38.5 °C 15 % 32 km/h 0.0 mm Very high 45
6 Dec 36.3 °C 14 % 35 km/h 0.0 mm Very high 47
7 Dec 37.9 °C 14 % 29 km/h 0.0 mm Very high 44
8 Dec 38.2 °C 11 % 37 km/h 0.0 mm Extreme 51
9 Dec 36.5 °C 15 % 36 km/h 0.0 mm Extreme 52
10 Dec 36.5 °C 13 % 37 km/h 0.0 mm Extreme 52
11 Dec 37.7 °C 16 % 39 km/h 0.0 mm Extreme 55
12 Dec 37.8 °C 14 % 37 km/h 0.0 mm Extreme 54
13 Dec 37.4 °C 13 % 32 km/h 0.0 mm Very high 49
14 Dec 37.8 °C 14 % 26 km/h 0.0 mm Very high 46
15 Dec after 37.0 °C 15 % 31 km/h 0.0 mm Very high 50
16 Dec after 36.1 °C 13 % 43 km/h 0.0 mm Extreme 58
17 Dec after 35.5 °C 12 % 36 km/h 0.0 mm Extreme 55
18 Dec after 34.3 °C 15 % 34 km/h 0.0 mm Extreme 53
19 Dec after 34.9 °C 14 % 31 km/h 0.0 mm Extreme 52
20 Dec after 34.2 °C 13 % 35 km/h 0.0 mm Extreme 53
21 Dec after 33.9 °C 11 % 38 km/h 0.0 mm Extreme 57
22 Dec after 34.1 °C 14 % 40 km/h 0.0 mm Extreme 58
23 Dec after 34.5 °C 14 % 35 km/h 0.0 mm Extreme 54
24 Dec after 35.3 °C 10 % 33 km/h 0.0 mm Extreme 54

Its twins: fires that started in the same weather

It started with an FWI of 35.8, a minimum humidity of 22% and 28 days without rain. Fires in the area that started in weather like this since 2016: 46.

FWI at the start 35.8
Minimum humidity 22 %
Days without rain 28
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Aweil Centre fire, November 2016
33,577 ha 26 days FWI 33.1 Min. humidity 22 % 92 km away, in 2016

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

What happened to them

19 days
median duration
10,524 ha
median area
54 %
went past 10,000 ha
1.6 mm
rain at the end (median; 1 of 46 had it)

It stayed below its twins: 5,174 ha against a median of 10,524 ha. It lasted 12 days, against 19 days.

In 45 of 46, 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 1.6 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
39km/h · max. gust

It was considered over on 14 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 46, with a median of 1.6 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 · 26 Nov 2021
After · 21 Dec 2021

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 · 146Every 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 Raga fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 3 December 2021 to 14 December 2021 (12 days). The perimeter dates it from 7 December 2021 to 14 December 2021.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 5,174 hectares (51.7 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Wau (3,950 ha, 0.2 %); Raga (1,255 ha, 0.0 %).
What was the weather like?
During the fire the temperature reached 38.5 °C, humidity dropped to 11 % and gusts hit 39 km/h. The fire danger index (FWI) reached 55, class Extreme.
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.
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: 46. Their median duration was 19 days and their median area 10,524 ha; 54 % went past 10,000 ha. In 45 of 46, 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 1.6 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 · 1 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
  1. Start date: 7 December 2021 → 3 December 2021.

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 7 December 2021 to 14 December 2021. 146 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.