Mashare fire, 6 September 2023 Mashare
The fire started on 6 September 2023 in Mashare, Namibia, and satellites saw it burning for 14 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 22,848 hectares from heat detections, spread across a single municipality.
It is the 13th largest in Kavango East since 2016 (of 394 with a page). Number 4 in Namibia in 2023, of 111.
Compare with…
- Burnt area
- 22,848ha
- GWIS perimeter (Copernicus)
- Duration
- 14days
- 6 Sept 2023 – 19 Sept 2023
- Municipalities hit
- 1
- constituencies
- Started on
- 6 Sept
- 2023
- Heat detections
- 1,048
- in a single hotspot: 237 MW
- Danger at start
- 57
- Extreme · FWI index
- Average daily power
- 1.0GW
- 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 more than two months without rain (1 mm or more) when it started.
This area had burned before
65% of the perimeter overlaps earlier fires recorded since 2016: 1,389 ha in 2017, 8,747 ha in 2018, 1,237 ha in 2019, 167 ha in 2020, 7,899 ha in 2021, 1,289 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 14,934 ha that had burned before.
- 4,273 ha Mashare fire, September 2021 6,783 ha in total; the hectares shown are those it shares with this fire
- 3,676 ha Mashare fire, September 2018 7,547 ha in total; the hectares shown are those it shares with this fire
- 2,678 ha Mashare fire, September 2018 13,441 ha in total; the hectares shown are those it shares with this fire
- 2,286 ha Mashare fire, September 2021 11,460 ha in total; the hectares shown are those it shares with this fire
- 1,289 ha Mashare fire, October 2018 8,378 ha in total; the hectares shown are those it shares with this fire
- 1,226 ha Mashare fire, August 2019 8,325 ha in total; the hectares shown are those it shares with this fire
- 441 ha Mashare fire, September 2022 3,533 ha in total; the hectares shown are those it shares with this fire
- 387 ha Mashare fire, August 2017 2,092 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
-
Mashare where it started23,021 ha reached on 7 Sept2.5 %
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 2025Inside the perimeter there was no noticeable built-up land and almost nobody lived there (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) |
|---|---|---|---|---|---|
| 6 Sept | 33.2 °C | 9 % | 41 km/h | 0.0 mm | Extreme 57 |
| 7 Sept | 34.1 °C | 10 % | 41 km/h | 0.0 mm | Extreme 58 |
| 8 Sept | 34.9 °C | 11 % | 35 km/h | 0.0 mm | Extreme 53 |
| 9 Sept | 35.5 °C | 10 % | 34 km/h | 0.0 mm | Extreme 53 |
| 10 Sept | 35.3 °C | 9 % | 32 km/h | 0.0 mm | Extreme 53 |
| 11 Sept | 33.6 °C | 11 % | 47 km/h | 0.0 mm | Extreme 69 |
| 12 Sept | 24.5 °C | 12 % | 51 km/h | 0.0 mm | Extreme 66 |
| 13 Sept | 31.1 °C | 18 % | 38 km/h | 0.0 mm | Extreme 53 |
| 14 Sept | 33.7 °C | 14 % | 34 km/h | 0.0 mm | Very high 50 |
| 15 Sept | 34.7 °C | 13 % | 33 km/h | 0.0 mm | Very high 49 |
| 16 Sept | 35.4 °C | 9 % | 23 km/h | 0.0 mm | Very high 50 |
| 17 Sept | 34.4 °C | 8 % | 39 km/h | 0.0 mm | Extreme 60 |
| 18 Sept | 35.8 °C | 8 % | 45 km/h | 0.0 mm | Extreme 64 |
| 19 Sept | 34.6 °C | 13 % | 45 km/h | 0.0 mm | Extreme 64 |
| 20 Sept after | 34.5 °C | 15 % | 28 km/h | 0.0 mm | Extreme 50 |
| 21 Sept after | 35.5 °C | 14 % | 38 km/h | 0.0 mm | Extreme 56 |
| 22 Sept after | 34.6 °C | 14 % | 30 km/h | 0.0 mm | Extreme 55 |
| 23 Sept after | 35.6 °C | 13 % | 36 km/h | 0.0 mm | Extreme 58 |
| 24 Sept after | 35.9 °C | 15 % | 36 km/h | 0.0 mm | Extreme 58 |
| 25 Sept after | 29.4 °C | 10 % | 46 km/h | 0.0 mm | Extreme 67 |
| 26 Sept after | 27.2 °C | 15 % | 55 km/h | 0.0 mm | Extreme 68 |
| 27 Sept after | 29.0 °C | 13 % | 41 km/h | 0.0 mm | Extreme 57 |
| 28 Sept after | 32.9 °C | 9 % | 36 km/h | 0.0 mm | Extreme 55 |
| 29 Sept after | 34.7 °C | 9 % | 37 km/h | 0.0 mm | Extreme 56 |
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 20 September 2023 the air beside the fire reached 84 µg/m³ of PM2.5. That day averaged 57: 3.8 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 · 1,048Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
Frequently asked questions
- How long did the Mashare fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 6 September 2023 to 19 September 2023 (14 days). The perimeter dates it from 6 September 2023 to 18 September 2023.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 22,848 hectares (228.5 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Mashare (23,021 ha, 2.5 %).
- What was the weather like?
- During the fire the temperature reached 35.8 °C, humidity dropped to 8 % and gusts hit 51 km/h. The fire danger index (FWI) reached 69, class Extreme.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Namibia (OCHA COD-AB). 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 24 October 2026.
- Last day with fire: 18 September 2023 → 19 September 2023.
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; 3 polygons grouped in this page.
- Dates adjusted with the VIIRS detections inside the perimeter, which said 6 September 2023 to 18 September 2023. 1,048 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 OCHA COD-AB (Namibia Statistics Agency (NSA)) (Creative Commons Attribution for Intergovernmental Organisations (CC BY-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.