Burned area
satellite only2,190ha
Perimeter published by GWIS (Copernicus).
- Source
- GWIS (Copernicus)
- Date
- 5 Feb 2023 – 11 Feb 2023
+− cross-check
No official record is matched to this page to compare it with.
GN · Guinea · –
Mamouroudou fire, 5 February 2023 Mamouroudou, Soromaya
Out · last detection 12 Feb 2023, 14:43 UTC
The fire started on 5 February 2023 in Mamouroudou, Guinea, and satellites saw it burning for 7 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 2,190 hectares from heat detections, spread across 2 municipalities.
It is the 243th largest in Kankan since 2016 (of 308 with a page). Number 57 in Guinea in 2023, of 79.
Use this data
Compare with…
Use this data
Fire page data · version 2026-11-01matches 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
5 Feb 2023 to 11 Feb 2023: first and last day with fire on the page.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 12 Feb 2023, 14:43 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 only5 Feb 2023
First day with fire seen by the satellites or the perimeter.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 5 Feb 2023
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
The worst day
satellite only279MW
Total radiative power on 7 February 2023; hotspots that day: 29.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 7 Feb 2023
+− 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
model45.0FWI · very high
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 11.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 5 Feb 2023, 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
model36.3°C · 12% RH
High of 36.3 °C and minimum humidity of 12% on 6 February 2023; gusts of 28 km/h on 7 February 2023.
- Source
- weather model at the fire’s grid cell
- Date
- 5 Feb 2023 – 11 Feb 2023
- 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.
Living inside
model≈ 150people
Estimated residents inside the perimeter and 0.38 ha of built-up area (100 m grid, epoch 2025).
- Source
- GHSL R2023A · JRC
- Date
- calculated on 24 October 2026
+− cross-check
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.
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
-
logLast day with fire: 18 February 2023 → 11 February 2023.
-
logStart date: 29 January 2023 → 5 February 2023.
-
logLast day with fire: 11 February 2023 → 18 February 2023.
-
logStart date: 5 February 2023 → 29 January 2023.
-
· reconstructed GHSLPopulation and built-up area computed
Area logged each night
Move the slider to see which area the page published each day.
Versioned permanent link
https://worldfires.org/en/fire/mamouroudou-2023-02?v=2026-11-01A 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 mamouroudou-2023-02.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023-02-05 | 9 | 82 | 35.3 | 18.6 | 16 | 9.8 | 22.3 | 0 | 45 | muy_alto | 1 |
| 2023-02-06 | 0 | 0 | 36.3 | 20.8 | 12 | 9.2 | 23 | 0 | 45.3 | muy_alto | 1 |
| 2023-02-07 | 29 | 279 | 35.6 | 22.4 | 25 | 12.5 | 27.7 | 0 | 44.5 | muy_alto | 1 |
| 2023-02-08 | 9 | 44 | 34.7 | 22.6 | 31 | 10 | 24.8 | 0 | 37.5 | alto | 1 |
| 2023-02-09 | 0 | 0 | 33.2 | 24.6 | 42 | 11 | 27.4 | 0 | 31.5 | alto | 1 |
| 2023-02-10 | 0 | 0 | 34.7 | 23.7 | 37 | 9.6 | 25.2 | 0 | 30.6 | alto | 1 |
| 2023-02-11 | 9 | 157 | 35 | 23.5 | 38 | 10.8 | 25.6 | 0 | 31.7 | alto | 1 |
| 2023-02-12 | 1 | 12 | 36.6 | 23.5 | 24 | 11.8 | 24.1 | 0 | 38.4 | muy_alto | 0 |
| 2023-02-13 | 0 | 0 | 38.1 | 22.1 | 19 | 13 | 31 | 0 | 44.5 | muy_alto | 0 |
| 2023-02-14 | 0 | 0 | 35.4 | 24.4 | 23 | 10.1 | 24.5 | 0 | 41.8 | muy_alto | 0 |
| 2023-02-15 | 0 | 0 | 34.9 | 23.7 | 23 | 11.7 | 23 | 0 | 43.6 | muy_alto | 0 |
| 2023-02-16 | 0 | 0 | 34.9 | 21.9 | 15 | 13.4 | 34.2 | 0 | 46.5 | muy_alto | 0 |
| 2023-02-17 | 0 | 0 | 37.7 | 21.6 | 12 | 12.6 | 28.8 | 0 | 50.1 | extremo | 0 |
| 2023-02-18 | 0 | 0 | 35.5 | 20 | 14 | 13.5 | 33.8 | 0 | 51.4 | extremo | 0 |
| 2023-02-19 | 0 | 0 | 35.5 | 21 | 16 | 7.9 | 17.6 | 0 | 45.3 | muy_alto | 0 |
| 2023-02-20 | 0 | 0 | 36.7 | 19.3 | 13 | 10.9 | 26.6 | 0 | 48.9 | muy_alto | 0 |
| 2023-02-21 | 0 | 0 | 37.3 | 19.2 | 14 | 12.7 | 31 | 0 | 51.2 | extremo | 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), GHSL (JRC). Open-Meteo.com · How we build fire pages: methodology
- Burnt area
- 2,190ha
- GWIS perimeter (Copernicus)
- Duration
- 7days
- 5 Feb 2023 – 11 Feb 2023
- Municipalities hit
- 2
- sub-prefectures
- Started on
- 5 Feb
- 2023
- Heat detections
- 57
- in a single hotspot: 0 MW
- Danger at start
- 45
- Very high · FWI index
- Average daily power
- 115MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
5 Feb11 Feb
12 Feb 2023
How it evolved, day by day
5 Feb
7 Feb
8 Feb
11 Feb
12 Feb
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
28km/h · peak gust
12%lowest humidity
It had gone 11 days without rain (1 mm or more) when it started.
This area had burned before
85% of the perimeter overlaps earlier fires recorded since 2016: 727 ha in 2016, 819 ha in 2017, 82 ha in 2018, 1,233 ha in 2020, 281 ha in 2021, 44 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 1,871 ha that had burned before.
- 727 ha Mamouroudou fire, January 2016 3,356 ha in total; the hectares shown are those it shares with this fire
- 595 ha Mamouroudou fire, February 2017 2,498 ha in total; the hectares shown are those it shares with this fire
- 76 ha Mamouroudou fire, January 2018 2,803 ha in total; the hectares shown are those it shares with this fire
- 6 ha Mamouroudou fire, January 2018 2,940 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
-
Mamouroudou where it started2,058 ha1.3 %
-
145 ha0.1 %
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 2025Built-up area0.38 ha
Residents≈ 150
Inside the perimeter there were about 0.38 hectares of built-up land and about 150 residents (GHSL 2025, 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. The GHSL 2025 epoch is a projection made from 2020 and earlier data.
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) |
|---|---|---|---|---|---|
| 5 Feb | 35.3 °C | 16 % | 22 km/h | 0.0 mm | Very high 45 |
| 6 Feb | 36.3 °C | 12 % | 23 km/h | 0.0 mm | Very high 45 |
| 7 Feb | 35.6 °C | 25 % | 28 km/h | 0.0 mm | Very high 44 |
| 8 Feb | 34.7 °C | 31 % | 25 km/h | 0.0 mm | High 38 |
| 9 Feb | 33.2 °C | 42 % | 27 km/h | 0.0 mm | High 32 |
| 10 Feb | 34.7 °C | 37 % | 25 km/h | 0.0 mm | High 31 |
| 11 Feb | 35.0 °C | 38 % | 26 km/h | 0.0 mm | High 32 |
| 12 Feb after | 36.6 °C | 24 % | 24 km/h | 0.0 mm | Very high 38 |
| 13 Feb after | 38.1 °C | 19 % | 31 km/h | 0.0 mm | Very high 44 |
| 14 Feb after | 35.4 °C | 23 % | 24 km/h | 0.0 mm | Very high 42 |
| 15 Feb after | 34.9 °C | 23 % | 23 km/h | 0.0 mm | Very high 44 |
| 16 Feb after | 34.9 °C | 15 % | 34 km/h | 0.0 mm | Very high 46 |
| 17 Feb after | 37.7 °C | 12 % | 29 km/h | 0.0 mm | Extreme 50 |
| 18 Feb after | 35.5 °C | 14 % | 34 km/h | 0.0 mm | Extreme 51 |
| 19 Feb after | 35.5 °C | 16 % | 18 km/h | 0.0 mm | Very high 45 |
| 20 Feb after | 36.7 °C | 13 % | 27 km/h | 0.0 mm | Very high 49 |
| 21 Feb after | 37.3 °C | 14 % | 31 km/h | 0.0 mm | Extreme 51 |
Its twins: fires that started in the same weather
It started with an FWI of 45.0, a minimum humidity of 16% and 11 days without rain. Fires in the area that started in weather like this since 2016: 15.
FWI at the start
45.0
Minimum humidity
16 %
Days without rain
11
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Mamouroudou fire, 5 February 2023
2,190 ha
7 days
FWI 45.0
Min. humidity 16 %
Kerouane Ctre fire, January 2016
3,767 ha
13 days
FWI 44.7
Min. humidity 15 %
20 km away, in 2016
First rain (1 mm or more) after it ended: none in the following ten days.
Douako fire, February 2020
3,750 ha
4 days
FWI 43.7
Min. humidity 16 %
81 km away, in 2020
First rain (1 mm or more) after it ended: none in the following ten days.
Moribayah fire, March 2017
3,274 ha
8 days
FWI 45.3
Min. humidity 17 %
31 km away, in 2017
First rain (1 mm or more) after it ended: 10.5 mm on 14 Mar.
Mamouroudou fire, January 2020
3,700 ha
16 days
FWI 44.7
Min. humidity 16 %
17 km away, in 2020
First rain (1 mm or more) after it ended: none in the following ten days.
Watanka fire, March 2019
2,085 ha
12 days
FWI 46.1
Min. humidity 16 %
95 km away, in 2019
First rain (1 mm or more) after it ended: 2.8 mm on 19 Mar.
What happened to them
- 7 days
- median duration
- 3,274 ha
- median area
- 0 %
- went past 10,000 ha
- 5.0 mm
- rain at the end (median; 3 of 15 had it)
It stayed below its twins: 2,190 ha against a median of 3,274 ha. It lasted 7 days, against 7 days.
In 12 of 15, 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 5.0 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
28km/h · max. gust
It was considered over on 11 Feb, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 3 of 15, with a median of 5.0 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 · 29 Jan 2023
After · 18 Feb 2023
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 14 February 2023 the air beside the fire reached 250 µg/m³ of PM2.5. That day averaged 118: 7.9 times the WHO daily guideline (15).
PM2.5 peak250 µg/m³
Days over the guideline12 days
PM10358 µg/m³
Optical depth0.94
WHO 15
3 Feb6 Feb9 Feb12 Feb
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 · 0Every 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 Mamouroudou fire last?
- GWIS (Copernicus) dates it between 5 February 2023 and 11 February 2023: 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 2,190 hectares (21.9 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Mamouroudou (2,058 ha, 1.3 %); Soromaya (145 ha, 0.1 %).
- What was the weather like?
- During the fire the temperature reached 36.3 °C, humidity dropped to 12 % and gusts hit 28 km/h. The fire danger index (FWI) reached 45, class Very high.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Guinea (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: 15. Their median duration was 7 days and their median area 3,274 ha; 0 % went past 10,000 ha. In 12 of 15, 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 5.0 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 · 4 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
- Last day with fire: 18 February 2023 → 11 February 2023.
- Start date: 29 January 2023 → 5 February 2023.
- Last day with fire: 11 February 2023 → 18 February 2023.
- Start date: 5 February 2023 → 29 January 2023.
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. No 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 2025, 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 ADM3 (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.