Mansa fire, 4 August 2021 Mansa, Milengi
The fire started on 4 August 2021 in Mansa, Zambia, and satellites saw it burning for 8 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,542 hectares from heat detections, spread across 2 municipalities.
It is the 419th largest in Luapula since 2016 (of 533 with a page). Number 161 in Zambia in 2021, of 213.
- Burnt area
- 3,542ha
- GWIS perimeter (Copernicus)
- Duration
- 8days
- 4 Aug 2021 – 11 Aug 2021
- Municipalities hit
- 2
- districts
- Started on
- 4 Aug
- 2021
- Heat detections
- 112
- in a single hotspot: 71 MW
- Danger at start
- 31
- High · FWI index
- Energy released
- 1.5GW
- sum of detected power
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
99% of the perimeter overlaps earlier fires recorded since 2016: 1,188 ha in 2016, 1,067 ha in 2017, 1,755 ha in 2018, 2,280 ha in 2019, 2,113 ha in 2020. Part of it burned more than once, so the yearly figures add up to more than the 3,507 ha that had burned before.
- 934 ha Mansa fire, August 2018 3,345 ha in total; the hectares shown are those it shares with this fire
- 881 ha Mansa fire, August 2017 3,677 ha in total; the hectares shown are those it shares with this fire
- 399 ha Mansa fire, August 2019 3,010 ha in total; the hectares shown are those it shares with this fire
What happened to each town
-
Mansa where it started3,522 ha reached on 5 Aug0.5 %
-
45 ha0.0 %
Burnt area inside each municipality, from crossing the GWIS perimeter with administrative boundaries. The distance is from the town centre 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)
| Day | High | Min. humidity | Peak gust | Rain | Danger (FWI) |
|---|---|---|---|---|---|
| 4 Aug | 25.6 °C | 27 % | 32 km/h | 0.0 mm | High 31 |
| 5 Aug | 25.9 °C | 31 % | 31 km/h | 0.0 mm | High 31 |
| 6 Aug | 27.2 °C | 30 % | 31 km/h | 0.0 mm | High 31 |
| 7 Aug | 27.1 °C | 27 % | 33 km/h | 0.0 mm | High 32 |
| 8 Aug | 27.1 °C | 28 % | 36 km/h | 0.0 mm | High 33 |
| 9 Aug | 26.8 °C | 29 % | 30 km/h | 0.0 mm | High 31 |
| 10 Aug | 27.8 °C | 26 % | 30 km/h | 0.0 mm | High 35 |
| 11 Aug | 25.8 °C | 25 % | 35 km/h | 0.0 mm | High 35 |
| 12 Aug after | 26.6 °C | 26 % | 30 km/h | 0.0 mm | High 32 |
| 13 Aug after | 28.0 °C | 26 % | 30 km/h | 0.0 mm | High 33 |
| 14 Aug after | 27.2 °C | 27 % | 43 km/h | 0.0 mm | Very high 39 |
| 15 Aug after | 26.7 °C | 31 % | 40 km/h | 0.0 mm | High 38 |
| 16 Aug after | 25.5 °C | 35 % | 42 km/h | 0.0 mm | High 36 |
| 17 Aug after | 27.4 °C | 34 % | 37 km/h | 0.0 mm | High 35 |
| 18 Aug after | 28.5 °C | 26 % | 32 km/h | 0.0 mm | High 34 |
| 19 Aug after | 29.5 °C | 27 % | 31 km/h | 0.0 mm | High 33 |
| 20 Aug after | 30.1 °C | 22 % | 36 km/h | 0.0 mm | Very high 39 |
| 21 Aug after | 29.4 °C | 24 % | 37 km/h | 0.0 mm | Very high 40 |
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.
Detections table · 112Every 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 Mansa fire last?
- GWIS (Copernicus) dates it between 4 August 2021 and 11 August 2021: 8 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 3,542 hectares (35.4 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Mansa (3,522 ha, 0.5 %); Milengi (45 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 27.8 °C, humidity dropped to 25 % and gusts hit 36 km/h. The fire danger index (FWI) reached 35, class High.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Zambia (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
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
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 4.0 (CC BY 4.0)). 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.