Namaacha fire, September 2017 Namaacha
The fire started on 11 September 2017 in Namaacha, Mozambique, and satellites saw it burning for 4 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,169 hectares from heat detections, spread across a single municipality.
It is the 14th largest in Maputo since 2016 (of 16 with a page). Number 165 in Mozambique in 2017, of 196.
Compare with…
- Burnt area
- 3,169ha
- GWIS perimeter (Copernicus)
- Duration
- 4days
- 11 Sept 2017 – 14 Sept 2017
- Municipalities hit
- 1
- districts
- Started on
- 11 Sept
- 2017
- Heat detections
- 105
- in a single hotspot: 31 MW
- Danger at start
- 36
- High · FWI index
- Average daily power
- 152MW
- 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 13 days without rain (1 mm or more) when it started. Rain came after the fire: 3.8 mm on 17 Sept.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
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
-
Namaacha where it started3,175 ha reached on 11 Sept1.5 %
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) |
|---|---|---|---|---|---|
| 11 Sept | 32.7 °C | 16 % | 35 km/h | 0.0 mm | High 36 |
| 12 Sept | 32.7 °C | 20 % | 32 km/h | 0.0 mm | High 35 |
| 13 Sept | 36.9 °C | 12 % | 47 km/h | 0.0 mm | Extreme 51 |
| 14 Sept | 28.8 °C | 26 % | 43 km/h | 0.0 mm | Very high 41 |
| 15 Sept after | 25.1 °C | 49 % | 28 km/h | 0.0 mm | High 22 |
| 16 Sept after | 33.1 °C | 24 % | 70 km/h | 0.0 mm | Extreme 53 |
| 17 Sept after | 19.0 °C | 56 % | 64 km/h | 3.8 mm | Low 9 |
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 · 105Every 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 Namaacha fire last?
- GWIS (Copernicus) dates it between 11 September 2017 and 14 September 2017: 4 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 3,169 hectares (31.7 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Namaacha (3,175 ha, 1.5 %).
- What was the weather like?
- During the fire the temperature reached 36.9 °C, humidity dropped to 12 % and gusts hit 47 km/h. The fire danger index (FWI) reached 51, class Extreme.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Mozambique (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
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. 105 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 (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.