Burned area
satellite only1,636ha
Perimeter published by GWIS (Copernicus).
- Source
- GWIS (Copernicus)
- Date
- 29 Jul 2024 – 4 Aug 2024
+− cross-check
No official record is matched to this page to compare it with.
CG · Republic of the Congo · –
Mayama fire, 29 July 2024 Mayama
Out · last detection 4 Aug 2024, 00:11 UTC
The fire started on 29 July 2024 in Mayama, Republic of the Congo, and satellites saw it burning for 7 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 1,636 hectares from heat detections, spread across a single municipality.
It is the 51th largest in Pool since 2016 (of 202 with a page). Number 19 in Republic of the Congo in 2024, of 103.
The power measured by the satellite is low (8.2 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.
Use this data
Compare with…
Use this data
Fire page data · version 2026-10-24matches the official recordwith caveatssatellite onlymodel
When copying, the sentence is
Tick the figures you want: they make up the lede and the CSV.
Duration by satellite
satellite only7days
29 Jul 2024 to 4 Aug 2024: first and last day with fire on the page.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 4 Aug 2024, 00:11 UTC
+− cross-check
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.
Start
satellite only29 Jul 2024
First day with fire seen by the satellites or the perimeter.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 29 Jul 2024
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only42
VIIRS detections at 375 m. Most intense hotspot: 8 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP + NOAA-20)
- Date
- 29 Jul 2024 – 4 Aug 2024
+− cross-check
There is no official record to compare with. Each hotspot is a pixel detected in one satellite pass, not a separate fire.
The worst day
satellite only44MW
Total radiative power on 31 July 2024; hotspots that day: 13.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 31 Jul 2024
+− cross-check
Fire radiative power (FRP) measures the energy the fire gives off when the satellite passes. Added up by day, it compares intensity, not area.
Danger at the start
model19.5FWI · moderate
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 60.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 29 Jul 2024, local noon
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
This is an index computed from weather model data, not a measurement of the fire nor an official warning. Danger warnings are issued by each country’s authority. Emergency number and official warnings
Weather during the fire
model30.7°C · 43% RH
High of 30.7 °C and minimum humidity of 43% on 2 August 2024; gusts of 36 km/h on 30 July 2024.
- Source
- weather model at the fire’s grid cell
- Date
- 29 Jul 2024 – 4 Aug 2024
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
These are model values for a cell of about 25 km, not from a weather station: they may differ from what was measured on the ground.
This page’s change log has been kept since 24 October 2026: every night what it publishes is compared and the difference is logged. Anything earlier is reconstructed from each source’s date and marked as reconstructed.
Show
-
· reconstructed weatherWeather and FWI computed from the ERA5 reanalysis
What was saved on 24 October 2026
Every night a snapshot of what the page shows is saved. If anything changes, it appears in the list as a log entry.
- Area
- 1,636 ha
- Dates
- 29 Jul 2024 – 4 Aug 2024
- Name
- Mvouti
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/mayama-2024-07-5?v=2026-10-24A version keeps the area, dates, name and official record; the area as it was logged (changes under 2% are not logged). The map, hotspots and weather always show today’s data.
Citation
A lede of about 60 words figures only, no adjectives
CSV for this fire mayama-2024-07-5.csv · daily, no individual hotspots
| fecha | focos_viirs | frp_mw | tmax_c | tmin_c | hr_min_pct | viento_max_kmh | racha_max_kmh | precip_mm | fwi | clase_fwi | dentro_del_incendio |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024-07-29 | 7 | 31 | 28.7 | 19.2 | 54 | 13.6 | 31 | 0 | 19.5 | moderado | 1 |
| 2024-07-30 | 14 | 22 | 27.3 | 19.8 | 55 | 16.7 | 35.6 | 0.1 | 21.4 | alto | 1 |
| 2024-07-31 | 13 | 44 | 30.6 | 17.6 | 46 | 11.2 | 29.9 | 0 | 19.7 | moderado | 1 |
| 2024-08-01 | 6 | 15 | 28.9 | 18.9 | 49 | 15.8 | 35.6 | 0 | 22.5 | alto | 1 |
| 2024-08-02 | 3 | 3 | 30.7 | 19.2 | 43 | 11.8 | 28.8 | 0 | 21.5 | alto | 1 |
| 2024-08-03 | 5 | 12 | 30.2 | 19.5 | 43 | 11.2 | 29.9 | 0 | 21.5 | alto | 1 |
| 2024-08-04 | 1 | 1 | 29 | 19.2 | 50 | 13.6 | 32.4 | 0 | 23.1 | alto | 1 |
| 2024-08-05 | 0 | 0 | 27.6 | 19.3 | 54 | 12.9 | 30.2 | 0.1 | 21.2 | moderado | 0 |
| 2024-08-06 | 0 | 0 | 30.9 | 19.6 | 49 | 17.4 | 39.2 | 0 | 24.1 | alto | 0 |
| 2024-08-07 | 0 | 0 | 29.8 | 20 | 50 | 16.2 | 36 | 0 | 23.6 | alto | 0 |
| 2024-08-08 | 0 | 0 | 28.6 | 19.8 | 51 | 16.5 | 36.7 | 0 | 24.1 | alto | 0 |
| 2024-08-09 | 0 | 0 | 30 | 18.5 | 50 | 13.9 | 31.7 | 0 | 22.7 | alto | 0 |
| 2024-08-10 | 0 | 0 | 28.9 | 19.9 | 55 | 13.7 | 32 | 0 | 22.2 | alto | 0 |
| 2024-08-11 | 0 | 0 | 27 | 20.4 | 61 | 13.5 | 33.1 | 0 | 19.5 | moderado | 0 |
| 2024-08-12 | 0 | 0 | 28.9 | 20.8 | 54 | 14.7 | 33.8 | 0.4 | 20.3 | moderado | 0 |
| 2024-08-13 | 0 | 0 | 30 | 20.5 | 47 | 15.9 | 37.1 | 0 | 23.2 | alto | 0 |
| 2024-08-14 | 0 | 0 | 28.2 | 20.6 | 55 | 11.6 | 27.4 | 0 | 20.9 | moderado | 0 |
It is generated in your browser from this page’s data: one file per fire, aggregated by day and without individual hotspots.
Live widget for your story
It updates itself while the fire is still active and links to this page. Free, with the attribution shown at the bottom.
Sources for this page: GWIS (Copernicus), NASA FIRMS (VIIRS), ERA5 (ECMWF/Copernicus C3S) · Open-Meteo.com (CC BY 4.0). Open-Meteo.com · How we build fire pages: methodology
- Burnt area
- 1,636ha
- GWIS perimeter (Copernicus)
- Duration
- 7days
- 29 Jul 2024 – 4 Aug 2024
- Municipalities hit
- 1
- districts
- Started on
- 29 Jul
- 2024
- Heat detections
- 42
- in a single hotspot: 8 MW
- Danger at start
- 20
- Moderate · FWI index
- Average daily power
- 18MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
29 Jul4 Aug
4 Aug 2024
How it evolved, day by day
29 Jul
31 Jul
2 Aug
4 Aug
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
31°high
36km/h · peak gust
43%lowest humidity
It had gone more than two months without rain (1 mm or more) when it started.
This area had burned before
77% of the perimeter overlaps earlier fires recorded since 2016: 638 ha in 2016, 15 ha in 2018, 15 ha in 2019, 1,114 ha in 2020. Part of it burned more than once, so the yearly figures add up to more than the 1,264 ha that had burned before.
- 1,114 ha Mayama fire, July 2020 3,555 ha in total; the hectares shown are those it shares with this fire
- 638 ha Mayama fire, July 2016 1,421 ha in total; the hectares shown are those it shares with this fire
- 15 ha Mayama fire, August 2018 1,851 ha in total; the hectares shown are those it shares with this fire
- 15 ha Mayama fire, June 2019 1,995 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
-
Mayama where it started1,647 ha reached on 30 Jul0.2 %
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) · Copernicus Climate Change Service (ERA5)
Started with 60 days without rain: 12 % of the area in Republic of the Congo
| Day | High | Min. humidity | Peak gust | Rain | Danger (FWI) |
|---|---|---|---|---|---|
| 29 Jul | 28.7 °C | 54 % | 31 km/h | 0.0 mm | Moderate 20 |
| 30 Jul | 27.3 °C | 55 % | 36 km/h | 0.1 mm | High 21 |
| 31 Jul | 30.6 °C | 46 % | 30 km/h | 0.0 mm | Moderate 20 |
| 1 Aug | 28.9 °C | 49 % | 36 km/h | 0.0 mm | High 22 |
| 2 Aug | 30.7 °C | 43 % | 29 km/h | 0.0 mm | High 22 |
| 3 Aug | 30.2 °C | 43 % | 30 km/h | 0.0 mm | High 22 |
| 4 Aug | 29.0 °C | 50 % | 32 km/h | 0.0 mm | High 23 |
| 5 Aug after | 27.6 °C | 54 % | 30 km/h | 0.1 mm | Moderate 21 |
| 6 Aug after | 30.9 °C | 49 % | 39 km/h | 0.0 mm | High 24 |
| 7 Aug after | 29.8 °C | 50 % | 36 km/h | 0.0 mm | High 24 |
| 8 Aug after | 28.6 °C | 51 % | 37 km/h | 0.0 mm | High 24 |
| 9 Aug after | 30.0 °C | 50 % | 32 km/h | 0.0 mm | High 23 |
| 10 Aug after | 28.9 °C | 55 % | 32 km/h | 0.0 mm | High 22 |
| 11 Aug after | 27.0 °C | 61 % | 33 km/h | 0.0 mm | Moderate 20 |
| 12 Aug after | 28.9 °C | 54 % | 34 km/h | 0.4 mm | Moderate 20 |
| 13 Aug after | 30.0 °C | 47 % | 37 km/h | 0.0 mm | High 23 |
| 14 Aug after | 28.2 °C | 55 % | 27 km/h | 0.0 mm | Moderate 21 |
Its twins: fires that started in the same weather
It started with an FWI of 19.5, a minimum humidity of 54% and more than two months without rain. Fires in the area that started in weather like this since 2016: 21.
FWI at the start
19.5
Minimum humidity
54 %
Days without rain
60+
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Mayama fire, 29 July 2024
1,636 ha
7 days
FWI 19.5
Min. humidity 54 %
Djambala fire, August 2020
1,168 ha
3 days
FWI 19.4
Min. humidity 54 %
94 km away, in 2020
First rain (1 mm or more) after it ended: none in the following ten days.
Mayama fire, August 2016
1,203 ha
6 days
FWI 17.2
Min. humidity 53 %
41 km away, in 2016
First rain (1 mm or more) after it ended: 2.0 mm on 15 Aug.
Kwamouth fire, August 2020
6,285 ha
18 days
FWI 21.8
Min. humidity 54 %
136 km away, in 2020
First rain (1 mm or more) after it ended: 2.3 mm on 22 Aug.
Kindamba fire, August 2022
1,654 ha
3 days
FWI 21.8
Min. humidity 52 %
49 km away, in 2022
First rain (1 mm or more) after it ended: 1.0 mm on 22 Aug.
Mouyondzi fire, August 2022
1,322 ha
11 days
FWI 17.2
Min. humidity 54 %
177 km away, in 2022
First rain (1 mm or more) after it ended: 1.0 mm on 1 Sept.
What happened to them
- 6 days
- median duration
- 1,424 ha
- median area
- 100 %
- went past 1,000 ha
- 1.6 mm
- rain at the end (median; 14 of 21 had it)
It burned an area similar to its twins (1,636 ha against a median of 1,424 ha) and lasted 7 days, against 6 days.
In 7 of 21, 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
36km/h · max. gust
It was considered over on 4 Aug, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 14 of 21, 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.
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
↔
Before · 22 Jul 2024
After · 11 Aug 2024
Sentinel-2 did not pass over on that day. Try another date, or use false colour, which is daily.
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 2 August 2024 the air beside the fire reached 51 µg/m³ of PM2.5. That day averaged 38: 2.5 times the WHO daily guideline (15).
PM2.5 peak51 µg/m³
Days over the guideline12 days
PM1073 µg/m³
Optical depth1.49
WHO 15
27 Jul30 Jul2 Aug5 Aug
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 · 42Every 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 time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
Frequently asked questions
- How long did the Mayama fire last?
- GWIS (Copernicus) dates it between 29 July 2024 and 4 August 2024: 7 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 1,636 hectares (16.4 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Mayama (1,647 ha, 0.2 %).
- What was the weather like?
- During the fire the temperature reached 30.7 °C, humidity dropped to 43 % and gusts hit 36 km/h. The fire danger index (FWI) reached 23, class High.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Republic of the Congo (geoBoundaries ADM2). 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: 21. Their median duration was 6 days and their median area 1,424 ha; 100 % went past 1,000 ha. In 7 of 21, 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 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
No changes since 24 October 2026.
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.
Report an error
How we know this
- Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery.
- Dates from the perimeter: the VIIRS detections inside it did not change them. 42 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.
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 (Map Library 2007, nombres de Wikidata) (Public Domain). 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.