Mayom fire, October 2026 Mayom, Tonj North, Gogrial East
The fire started on 14 October 2026 in Mayom, South Sudan, and satellites saw it burning for 12 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 5,359 hectares from heat detections, spread across 3 municipalities.
It is the 71th largest in Unity since 2016 (of 86 with a page). Number 158 in South Sudan in 2026, of 184.
Compare with…
Is it still active?
Satellites detected fire on 25 Oct 2026, 12:04 UTC. Everything suggests it is still burning. Satellites pass a few times a day and cloud or smoke can hide the fire: a lack of detections is not an official extinction. Each country’s emergency service declares a fire contained or out.
- Burnt area
- 5,359ha
- GWIS perimeter (Copernicus)
- Duration
- 12days
- 14 Oct 2026 – 25 Oct 2026
- Municipalities hit
- 3
- counties
- Started on
- 14 Oct
- 2026
- Heat detections
- 139
- in a single hotspot: 116 MW
- Danger at start
- 29
- High · FWI index
- Average daily power
- 146MW
- 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 2 days without rain (1 mm or more) when it started.
This area had burned before
37% of the perimeter overlaps earlier fires recorded since 2016: 1,392 ha in 2023, 3,967 ha in 2025. Part of it burned more than once, so the yearly figures add up to more than the 1,994 ha that had burned before.
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
-
Mayom where it started5,241 ha reached on 14 Oct1.2 %
-
121 ha reached on 21 Oct0.0 %
-
29 ha reached on 22 Oct0.0 %
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.
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) · forecast models, provisional until the ERA5 reanalysis arrives
| Day | High | Min. humidity | Peak gust | Rain | Danger (FWI) |
|---|---|---|---|---|---|
| 14 Oct | 38.6 °C | 29 % | 30 km/h | 0.1 mm | High 29 |
| 15 Oct | 39.8 °C | 27 % | 32 km/h | 0.5 mm | High 28 |
| 16 Oct | 38.7 °C | 29 % | 45 km/h | 1.2 mm | High 30 |
| 17 Oct | 37.2 °C | 31 % | 28 km/h | 0.6 mm | High 25 |
| 18 Oct | 35.8 °C | 36 % | 25 km/h | 0.0 mm | High 25 |
| 19 Oct | 39.0 °C | 23 % | 24 km/h | 0.0 mm | High 33 |
| 20 Oct | 39.6 °C | 23 % | 34 km/h | 0.3 mm | High 36 |
| 21 Oct | 40.8 °C | 21 % | 30 km/h | 0.1 mm | High 37 |
| 22 Oct | 42.7 °C | 15 % | 28 km/h | 0.0 mm | Very high 40 |
| 23 Oct | 41.0 °C | 18 % | 25 km/h | 0.0 mm | Very high 40 |
| 24 Oct | 40.2 °C | 15 % | 20 km/h | 0.0 mm | Very high 42 |
| 25 Oct | 39.4 °C | 18 % | 32 km/h | 0.0 mm | Very high 47 |
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.
The smoke
CAMS · CopernicusOn 23 October 2026 the air beside the fire reached 50 µg/m³ of PM2.5. That day averaged 34: 2.3 times the WHO daily guideline (15).
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 · 139Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 6,369 haGogrial East4 November 2025 · 19 days · 14 km away
- 14,292 haTonj NorthApril 2017 · 11 days · 29 km away
- 10,212 haTonj NorthApril 2020 · 9 days · 32 km away
- 9,563 haTonj NorthMay 2023 · 15 days · 32 km away
- 10,274 haTonj NorthMarch 2019 · 13 days · 35 km away
- 6,581 haTonj NorthApril 2018 · 8 days · 35 km away
Frequently asked questions
- How long did the Mayom fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 14 October 2026 to 25 October 2026 (12 days). The perimeter dates it from 19 October 2026 to 24 October 2026.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 5,359 hectares (53.6 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 3 municipalities: Mayom (5,241 ha, 1.2 %); Tonj North (121 ha, 0.0 %); Gogrial East (29 ha, 0.0 %).
- Is the Mayom fire still active?
- Yes: satellites detected fire on 25 Oct 2026, 12:04 UTC. Check the emergency service for the official status.
- What was the weather like?
- During the fire the temperature reached 42.7 °C, humidity dropped to 15 % and gusts hit 45 km/h. The fire danger index (FWI) reached 42, 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
History of this page · 1 Changes in area, dates, name, official record or merged pages, compared every night since 25 October 2026.
- Page published (5,359 ha).
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 19 October 2026 to 24 October 2026. 139 Suomi-NPP VIIRS detections on those dates.
- We have not matched this page with any official record.
- Weather: ECMWF IFS model, provisional until the ERA5 reanalysis arrives.
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.