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SS · South Sudan · –

Maiwut fire, 24 February 2020 Maiwut

Out · last detection 6 Mar 2020, 22:32 UTC

The fire started on 24 February 2020 in Maiwut, South Sudan, and satellites saw it burning for 12 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 6,055 hectares from heat detections, spread across a single municipality.

It is the 163th largest in Upper Nile since 2016 (of 238 with a page). Number 145 in South Sudan in 2020, of 190.

The power measured by the satellite is low (29.6 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.

Burnt area
6,055ha
GWIS perimeter (Copernicus)
Duration
12days
24 Feb 2020 – 6 Mar 2020
Municipalities hit
1
counties
Started on
24 Feb
2020
Heat detections
61
in a single hotspot: 30 MW
Danger at start
45
Very high · FWI index
Average daily power
45MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 24 Feb6 Mar
6 Mar 2020

How it evolved, day by day

27 Feb 2020 · 49 MW · 11 1 Mar 2020 · 11 MW · 5 2 Mar 2020 · 110 MW · 13 3 Mar 2020 · 112 MW · 22 4 Mar 2020 · 6 MW · 4 5 Mar 2020 · 3 MW · 1 6 Mar 2020 · 25 MW · 5
27 Feb 3 Mar 6 Mar

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
36km/h · peak gust
10%lowest humidity

It had gone more than two months without rain (1 mm or more) when it started. Rain came after the fire: 4.2 mm on 13 Mar.

This area had burned before

71% of the perimeter overlaps earlier fires recorded since 2016: 4,085 ha in 2016, 253 ha in 2017, 2,406 ha in 2019. Part of it burned more than once, so the yearly figures add up to more than the 4,294 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 3.8% of the area of London (61 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. Maiwut where it started
    6,097 ha reached on 27 Feb
    1.6 %

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)

Started with Very dry air: 33 % of the area in South Sudan 60 days without rain: 13 % of the area in South Sudan

Day High Min. humidity Peak gust Rain Danger (FWI)
24 Feb 34.2 °C 12 % 27 km/h 0.0 mm Very high 45
25 Feb 33.0 °C 16 % 29 km/h 0.0 mm Extreme 54
26 Feb 35.2 °C 18 % 25 km/h 0.0 mm Very high 49
27 Feb 35.7 °C 18 % 24 km/h 0.0 mm Very high 44
28 Feb 34.5 °C 23 % 36 km/h 0.0 mm Extreme 57
29 Feb 34.7 °C 19 % 23 km/h 0.0 mm Very high 42
1 Mar 35.5 °C 10 % 26 km/h 0.0 mm Extreme 52
2 Mar 36.1 °C 13 % 28 km/h 0.0 mm Extreme 54
3 Mar 35.8 °C 14 % 27 km/h 0.0 mm Extreme 58
4 Mar 36.4 °C 12 % 24 km/h 0.0 mm Extreme 53
5 Mar 35.5 °C 17 % 23 km/h 0.0 mm Very high 47
6 Mar 36.3 °C 17 % 27 km/h 0.0 mm Extreme 52
7 Mar after 35.5 °C 22 % 24 km/h 0.0 mm Very high 49
8 Mar after 36.9 °C 17 % 26 km/h 0.0 mm Very high 49
9 Mar after 32.5 °C 31 % 30 km/h 0.0 mm Very high 47
10 Mar after 34.6 °C 24 % 27 km/h 0.0 mm Very high 39
11 Mar after 33.7 °C 29 % 40 km/h 0.0 mm Very high 48
12 Mar after 34.8 °C 27 % 42 km/h 0.4 mm Extreme 55
13 Mar after 31.1 °C 39 % 37 km/h 4.2 mm Low 8

Its twins: fires that started in the same weather

It started with an FWI of 44.8, a minimum humidity of 12% and more than two months without rain. Fires in the area that started in weather like this since 2016: 17.

FWI at the start 44.8
Minimum humidity 12 %
Days without rain 60+
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Maiwut fire, January 2019
6,134 ha 11 days FWI 49.9 Min. humidity 13 % 5 km away, in 2019

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

What happened to them

15 days
median duration
6,825 ha
median area
12 %
went past 10,000 ha
6.4 mm
rain at the end (median; 2 of 17 had it)

It burned an area similar to its twins (6,055 ha against a median of 6,825 ha) and lasted 12 days, against 15 days.

In 15 of 17, 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 6.4 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

4.2 mmfirst rain
13 Mar7 days after it ended
36km/h · max. gust

It was considered over on 6 Mar, and on 13 Mar 4.2 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 2 of 17, with a median of 6.4 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 · 17 Feb 2020
After · 13 Mar 2020

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 · 61Every 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 Maiwut fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 24 February 2020 to 6 March 2020 (12 days). The perimeter dates it from 26 February 2020 to 6 March 2020.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 6,055 hectares (60.6 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Maiwut (6,097 ha, 1.6 %).
What was the weather like?
During the fire the temperature reached 36.4 °C, humidity dropped to 10 % and gusts hit 36 km/h. The fire danger index (FWI) reached 58, 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: 17. Their median duration was 15 days and their median area 6,825 ha; 12 % went past 10,000 ha. In 15 of 17, 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 6.4 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: 26 February 2020 → 24 February 2020.

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 26 February 2020 to 6 March 2020. 61 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.