Ulang fire, January 2022 Ulang
The fire started on 25 January 2022 in Ulang, South Sudan, and satellites saw it burning for 23 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 9,355 hectares from heat detections, spread across a single municipality.
It is the 96th largest in Upper Nile since 2016 (of 285 with a page). Number 44 in South Sudan in 2022, of 123.
Compare with…
Suggestions: Ulang · 2017Ulang · 2018Ulang · 2018Ulang · 2016
- Burnt area
- 9,355ha
- GWIS perimeter (Copernicus)
- Duration
- 23days
- 25 Jan 2022 – 16 Feb 2022
- Municipalities hit
- 1
- counties
- Started on
- 25 Jan
- 2022
- Heat detections
- 265
- in a single hotspot: 65 MW
- Danger at start
- 64
- Extreme · FWI index
- Average daily power
- 175MW
- detected power per day, on average
Where it burned
How it evolved, day by day
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
It had gone 9 days without rain (1 mm or more) when it started.
This area had burned before
83% of the perimeter overlaps earlier fires recorded since 2016: 1,704 ha in 2016, 4,673 ha in 2017, 696 ha in 2018, 3,705 ha in 2019, 101 ha in 2020, 2,046 ha in 2021. Part of it burned more than once, so the yearly figures add up to more than the 7,789 ha that had burned before.
- 3,373 ha Ulang fire, December 2017 35,904 ha in total; the hectares shown are those it shares with this fire
- 781 ha Ulang fire, December 2018 58,283 ha in total; the hectares shown are those it shares with this fire
- 696 ha Ulang fire, December 2018 8,768 ha in total; the hectares shown are those it shares with this fire
- 37 ha Ulang fire, December 2016 129,779 ha in total; the hectares shown are those it shares with this fire
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
Paris boundary: geoBoundaries · Institut national de l'information géographique et forestière (IGN-F) (Etalab Open License 2.0).
Madrid boundary: geoBoundaries · Open Data ESRI, IGN Central Registry of Cartography Area (CC BY 4.0).
Berlin boundary: geoBoundaries · Federal Agency for Cartography and Geodesy (dl-de/by-2-0).
This compares size, not location: both shapes are at the same scale, north up, centred on each other.
What happened to each town
-
Ulang where it started9,404 ha reached on 27 Jan1.9 %
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 2020Inside 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) |
|---|---|---|---|---|---|
| 27 Jan | 37.3 °C | 18 % | 52 km/h | 0.0 mm | Extreme 64 |
| 28 Jan | 36.0 °C | 19 % | 46 km/h | 0.0 mm | Extreme 59 |
| 29 Jan | 36.4 °C | 18 % | 44 km/h | 0.0 mm | Extreme 57 |
| 30 Jan | 36.3 °C | 16 % | 42 km/h | 0.0 mm | Extreme 55 |
| 31 Jan | 37.5 °C | 13 % | 42 km/h | 0.0 mm | Extreme 57 |
| 1 Feb | 37.0 °C | 11 % | 41 km/h | 0.0 mm | Extreme 57 |
| 2 Feb | 37.9 °C | 15 % | 37 km/h | 0.0 mm | Extreme 56 |
| 3 Feb | 38.6 °C | 12 % | 40 km/h | 0.0 mm | Extreme 58 |
| 4 Feb | 39.7 °C | 11 % | 41 km/h | 0.0 mm | Extreme 64 |
| 5 Feb | 37.3 °C | 11 % | 53 km/h | 0.0 mm | Very extreme 72 |
| 6 Feb | 35.9 °C | 12 % | 46 km/h | 0.0 mm | Extreme 65 |
| 7 Feb | 36.1 °C | 12 % | 41 km/h | 0.0 mm | Extreme 61 |
| 8 Feb | 37.8 °C | 11 % | 39 km/h | 0.0 mm | Extreme 62 |
| 9 Feb | 38.7 °C | 12 % | 33 km/h | 0.0 mm | Extreme 58 |
| 10 Feb | 39.1 °C | 16 % | 43 km/h | 0.0 mm | Extreme 65 |
| 11 Feb | 39.2 °C | 11 % | 46 km/h | 0.0 mm | Extreme 68 |
| 12 Feb | 38.7 °C | 16 % | 42 km/h | 0.0 mm | Extreme 64 |
| 13 Feb | 39.9 °C | 15 % | 39 km/h | 0.0 mm | Extreme 61 |
| 14 Feb | 39.6 °C | 10 % | 40 km/h | 0.0 mm | Extreme 63 |
| 15 Feb | 39.4 °C | 11 % | 37 km/h | 0.0 mm | Extreme 58 |
| 16 Feb | 40.2 °C | 12 % | 40 km/h | 0.0 mm | Extreme 64 |
| 17 Feb after | 40.2 °C | 11 % | 37 km/h | 0.0 mm | Extreme 62 |
| 18 Feb after | 40.5 °C | 10 % | 37 km/h | 0.0 mm | Extreme 62 |
| 19 Feb after | 40.7 °C | 6 % | 50 km/h | 0.0 mm | Very extreme 77 |
| 20 Feb after | 38.6 °C | 6 % | 54 km/h | 0.0 mm | Very extreme 82 |
| 21 Feb after | 34.6 °C | 9 % | 40 km/h | 0.0 mm | Extreme 65 |
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
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 · 265Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 129,779 haUlangDecember 2016 · 49 days · 16 km away
- 35,904 haUlangDecember 2017 · 24 days · 16 km away
- 58,283 haUlang27 December 2018 · 39 days · 19 km away
- 25,875 haUlang20 March 2023 · 43 days · 27 km away
- 83,713 haUlang27 February 2022 · 37 days · 29 km away
- 63,860 haAkobo24 January 2022 · 37 days · 37 km away
Frequently asked questions
- How long did the Ulang fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 25 January 2022 to 16 February 2022 (23 days). The perimeter dates it from 27 January 2022 to 11 February 2022.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 9,355 hectares (93.6 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Ulang (9,404 ha, 1.9 %).
- What was the weather like?
- During the fire the temperature reached 39.7 °C, humidity dropped to 11 % and gusts hit 53 km/h. The fire danger index (FWI) reached 72, class Very 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.
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.
- Last day with fire: 11 February 2022 → 16 February 2022.
- Start date: 27 January 2022 → 25 January 2022.
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.
Report an error
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 27 January 2022 to 11 February 2022. 265 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.
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.