Burned area
satellite only11,755ha
Perimeter published by GWIS (Copernicus).
- Source
- GWIS (Copernicus)
- Date
- 24 May 2021 – 6 Jun 2021
+− cross-check
No official record is matched to this page to compare it with.
CD · Democratic Republic of the Congo · –
Masi-Manimba fire, 24 May 2021 Masi-Manimba, Bulungu
Out · last detection 6 Jun 2021, 12:05 UTC
The fire started on 24 May 2021 in Masi-Manimba, Democratic Republic of the Congo, and satellites saw it burning for 14 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 11,755 hectares from heat detections, spread across 2 municipalities.
It is the 27th largest in Kwilu since 2016 (of 151 with a page). Number 9 in Democratic Republic of the Congo in 2021, of 97.
Use this data
Compare with…
Use this data
Fire page data · version 2026-10-26matches 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 only14days
24 May 2021 to 6 Jun 2021: first and last day with fire on the page.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 6 Jun 2021, 12:05 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 only24 May 2021
First day with fire seen by the satellites or the perimeter.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 24 May 2021
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only454
VIIRS detections at 375 m. Most intense hotspot: 148 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 24 May 2021 – 6 Jun 2021
+− 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 only3,198MW
Total radiative power on 1 June 2021; hotspots that day: 112.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 1 Jun 2021
+− 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
model14.7FWI · moderate
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 13.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 24 May 2021, 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
model34.9°C · 21% RH
High of 34.9 °C and minimum humidity of 21% on 31 May 2021; gusts of 37 km/h on 24 May 2021.
- Source
- weather model at the fire’s grid cell
- Date
- 24 May 2021 – 6 Jun 2021
- 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≈ 900people
Estimated residents inside the perimeter and 8.1 ha of built-up area (100 m grid, epoch 2020).
- 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
-
logLast day with fire: 3 June 2021 → 6 June 2021.
-
logStart date: 29 May 2021 → 24 May 2021.
-
· reconstructed weatherWeather and FWI computed from the ERA5 reanalysis
-
· reconstructed GHSLPopulation and built-up area computed
What was saved on 26 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
- 11,755 ha
- Dates
- 24 May 2021 – 6 Jun 2021
- Name
- Masi-Manimba
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/masi-manimba-2021-05-2?v=2026-10-26A 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 masi-manimba-2021-05-2.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021-05-24 | 1 | 4 | 32.5 | 21.2 | 37 | 10.2 | 37.4 | 0 | 14.7 | moderado | 1 |
| 2021-05-25 | 19 | 213 | 32.8 | 19.4 | 31 | 9.9 | 30.6 | 0 | 16.4 | moderado | 1 |
| 2021-05-26 | 6 | 48 | 33.6 | 17.8 | 25 | 11.2 | 31 | 0 | 20.1 | moderado | 1 |
| 2021-05-27 | 1 | 4 | 33.6 | 18.3 | 27 | 9.9 | 27.4 | 0 | 20.1 | moderado | 1 |
| 2021-05-28 | 2 | 3 | 34 | 18 | 29 | 9 | 25.6 | 0 | 20.3 | moderado | 1 |
| 2021-05-29 | 9 | 224 | 33 | 19.3 | 40 | 9.2 | 24.1 | 0 | 18.7 | moderado | 1 |
| 2021-05-30 | 24 | 311 | 33.4 | 20.7 | 35 | 9.2 | 25.9 | 0 | 19.2 | moderado | 1 |
| 2021-05-31 | 170 | 2,645 | 34.9 | 19.7 | 21 | 11.9 | 30.2 | 0 | 25.7 | alto | 1 |
| 2021-06-01 | 112 | 3,198 | 33.8 | 17.1 | 23 | 9.8 | 18.4 | 0 | 25.1 | alto | 1 |
| 2021-06-02 | 37 | 253 | 34.4 | 18.7 | 27 | 7.4 | 16.6 | 0 | 24.2 | alto | 1 |
| 2021-06-03 | 9 | 154 | 32.6 | 20.2 | 37 | 8.9 | 17.6 | 0 | 22.1 | alto | 1 |
| 2021-06-04 | 2 | 22 | 32.6 | 19.7 | 39 | 10.6 | 30.6 | 0 | 22.3 | alto | 1 |
| 2021-06-05 | 57 | 639 | 33.1 | 20.8 | 32 | 11.2 | 30.2 | 0 | 23.1 | alto | 1 |
| 2021-06-06 | 5 | 18 | 30.7 | 20.4 | 36 | 10.1 | 32 | 0.5 | 23 | alto | 1 |
| 2021-06-07 | 0 | 0 | 30.9 | 19.1 | 48 | 9.9 | 37.8 | 0.2 | 19.4 | moderado | 0 |
| 2021-06-08 | 0 | 0 | 33.1 | 19.6 | 36 | 14.9 | 39.6 | 0 | 23.7 | alto | 0 |
| 2021-06-09 | 0 | 0 | 33.6 | 18.9 | 32 | 12.1 | 33.5 | 0 | 24.3 | alto | 0 |
| 2021-06-10 | 0 | 0 | 33.1 | 19.7 | 32 | 9.8 | 27 | 0 | 23.4 | alto | 0 |
| 2021-06-11 | 0 | 0 | 33.5 | 19.9 | 30 | 14.6 | 37.1 | 0 | 27.8 | alto | 0 |
| 2021-06-12 | 0 | 0 | 33.8 | 18.7 | 29 | 11.2 | 28.8 | 0 | 26.6 | alto | 0 |
| 2021-06-13 | 0 | 0 | 33.5 | 17.4 | 21 | 10.4 | 29.5 | 0 | 30.3 | alto | 0 |
| 2021-06-14 | 0 | 0 | 32.1 | 17.9 | 26 | 12 | 31 | 0 | 32.1 | alto | 0 |
| 2021-06-15 | 0 | 0 | 32.1 | 17.6 | 27 | 8.2 | 16.6 | 0 | 29.8 | alto | 0 |
| 2021-06-16 | 0 | 0 | 32.6 | 17.8 | 29 | 7.5 | 21.2 | 0 | 29.3 | alto | 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
- 11,755ha
- GWIS perimeter (Copernicus)
- Duration
- 14days
- 24 May 2021 – 6 Jun 2021
- Municipalities hit
- 2
- territories
- Started on
- 24 May
- 2021
- Heat detections
- 454
- in a single hotspot: 148 MW
- Danger at start
- 15
- Moderate · FWI index
- Average daily power
- 553MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
24 May6 Jun
6 Jun 2021
How it evolved, day by day
24 May
27 May
1 Jun
5 Jun
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
35°high
37km/h · peak gust
21%lowest humidity
It had gone 13 days without rain (1 mm or more) when it started.
This area had burned before
77% of the perimeter overlaps earlier fires recorded since 2016: 2,047 ha in 2016, 1,797 ha in 2017, 3,459 ha in 2018, 4,125 ha in 2019, 3,734 ha in 2020. Part of it burned more than once, so the yearly figures add up to more than the 9,008 ha that had burned before.
- 2,689 ha Masi-Manimba fire, June 2019 7,173 ha in total; the hectares shown are those it shares with this fire
- 89 ha Masi-Manimba fire, July 2020 8,095 ha in total; the hectares shown are those it shares with this fire
- 22 ha Masi-Manimba fire, June 2018 5,356 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
-
Masi-Manimba where it started11,585 ha reached on 24 May0.8 %
-
253 ha reached on 30 May0.0 %
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.
People and buildings inside the perimeter
GHSL 2020Built-up area8.1 ha
Residents≈ 900
Inside the perimeter there were about 8.1 hectares of built-up land and about 900 residents (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) |
|---|---|---|---|---|---|
| 24 May | 32.5 °C | 37 % | 37 km/h | 0.0 mm | Moderate 15 |
| 25 May | 32.8 °C | 31 % | 31 km/h | 0.0 mm | Moderate 16 |
| 26 May | 33.6 °C | 25 % | 31 km/h | 0.0 mm | Moderate 20 |
| 27 May | 33.6 °C | 27 % | 27 km/h | 0.0 mm | Moderate 20 |
| 28 May | 34.0 °C | 29 % | 26 km/h | 0.0 mm | Moderate 20 |
| 29 May | 33.0 °C | 40 % | 24 km/h | 0.0 mm | Moderate 19 |
| 30 May | 33.4 °C | 35 % | 26 km/h | 0.0 mm | Moderate 19 |
| 31 May | 34.9 °C | 21 % | 30 km/h | 0.0 mm | High 26 |
| 1 Jun | 33.8 °C | 23 % | 18 km/h | 0.0 mm | High 25 |
| 2 Jun | 34.4 °C | 27 % | 17 km/h | 0.0 mm | High 24 |
| 3 Jun | 32.6 °C | 37 % | 18 km/h | 0.0 mm | High 22 |
| 4 Jun | 32.6 °C | 39 % | 31 km/h | 0.0 mm | High 22 |
| 5 Jun | 33.1 °C | 32 % | 30 km/h | 0.0 mm | High 23 |
| 6 Jun | 30.7 °C | 36 % | 32 km/h | 0.5 mm | High 23 |
| 7 Jun after | 30.9 °C | 48 % | 38 km/h | 0.2 mm | Moderate 19 |
| 8 Jun after | 33.1 °C | 36 % | 40 km/h | 0.0 mm | High 24 |
| 9 Jun after | 33.6 °C | 32 % | 34 km/h | 0.0 mm | High 24 |
| 10 Jun after | 33.1 °C | 32 % | 27 km/h | 0.0 mm | High 23 |
| 11 Jun after | 33.5 °C | 30 % | 37 km/h | 0.0 mm | High 28 |
| 12 Jun after | 33.8 °C | 29 % | 29 km/h | 0.0 mm | High 27 |
| 13 Jun after | 33.5 °C | 21 % | 30 km/h | 0.0 mm | High 30 |
| 14 Jun after | 32.1 °C | 26 % | 31 km/h | 0.0 mm | High 32 |
| 15 Jun after | 32.1 °C | 27 % | 17 km/h | 0.0 mm | High 30 |
| 16 Jun after | 32.6 °C | 29 % | 21 km/h | 0.0 mm | High 29 |
Its twins: fires that started in the same weather
It started with an FWI of 14.7, a minimum humidity of 37% and 13 days without rain. Fires in the area that started in weather like this since 2016: 34.
FWI at the start
14.7
Minimum humidity
37 %
Days without rain
13
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Masi-Manimba fire, 24 May 2021
11,755 ha
14 days
FWI 14.7
Min. humidity 37 %
Masi-Manimba fire, June 2016
9,553 ha
18 days
FWI 16.4
Min. humidity 36 %
25 km away, in 2016
First rain (1 mm or more) after it ended: 2.6 mm on 29 Jun.
Masi-Manimba fire, June 2017
7,077 ha
16 days
FWI 13.3
Min. humidity 40 %
58 km away, in 2017
First rain (1 mm or more) after it ended: 1.0 mm on 19 Jun.
Feshi fire, June 2020
5,103 ha
17 days
FWI 17.1
Min. humidity 37 %
114 km away, in 2020
First rain (1 mm or more) after it ended: none in the following ten days.
Masi-Manimba fire, June 2018
12,956 ha
16 days
FWI 12.1
Min. humidity 34 %
34 km away, in 2018
First rain (1 mm or more) after it ended: none in the following ten days.
Feshi fire, June 2018
5,050 ha
16 days
FWI 14.1
Min. humidity 32 %
153 km away, in 2018
First rain (1 mm or more) after it ended: none in the following ten days.
What happened to them
- 15 days
- median duration
- 6,181 ha
- median area
- 12 %
- went past 10,000 ha
- 2.6 mm
- rain at the end (median; 14 of 34 had it)
It was 1.9 times larger than the median of its twins and lasted 14 days, against 15 days.
Only 3 of its 34 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 20 of 34, 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 2.6 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
37km/h · max. gust
It was considered over on 6 Jun, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 14 of 34, with a median of 2.6 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 · 17 May 2021
After · 13 Jun 2021
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.
Detections table · 454Every 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 Masi-Manimba fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 24 May 2021 to 6 June 2021 (14 days). The perimeter dates it from 29 May 2021 to 3 June 2021.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 11,755 hectares (117.6 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Masi-Manimba (11,585 ha, 0.8 %); Bulungu (253 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 34.9 °C, humidity dropped to 21 % and gusts hit 37 km/h. The fire danger index (FWI) reached 26, class High.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Democratic Republic of the Congo (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: 34. Their median duration was 15 days and their median area 6,181 ha; 12 % went past 10,000 ha. Only 3 of its 34 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 20 of 34, 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 2.6 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 · 2 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
- Last day with fire: 3 June 2021 → 6 June 2021.
- Start date: 29 May 2021 → 24 May 2021.
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 adjusted with the VIIRS detections inside the perimeter, which said 29 May 2021 to 3 June 2021. 454 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.