Nova Mamoré fire, 27 August 2018 Nova Mamoré
The fire started on 27 August 2018 in Nova Mamoré, Brazil, and satellites saw it burning for 16 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 5,564 hectares from heat detections, spread across a single municipality.
It is the 103th largest in Rondônia since 2016 (of 300 with a page). Number 78 in Brazil in 2018, of 291.
Compare with…
- Burnt area
- 5,564ha
- GWIS perimeter (Copernicus)
- Duration
- 16days
- 27 Aug 2018 – 11 Sept 2018
- Municipalities hit
- 1
- municipalities
- Started on
- 27 Aug
- 2018
- Heat detections
- 285
- in a single hotspot: 146 MW
- Danger at start
- 12
- Moderate · FWI index
- Average daily power
- 352MW
- 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 2 days without rain (1 mm or more) when it started. Rain came after the fire: 6.1 mm on 16 Sept.
This area had burned before
89% of the perimeter overlaps earlier fires recorded since 2016: 4,549 ha in 2016, 5,638 ha in 2017. Part of it burned more than once, so the yearly figures add up to more than the 4,950 ha that had burned before.
- 2,585 ha Nova Mamoré fire, July 2016 9,270 ha in total; the hectares shown are those it shares with this fire
- 1,898 ha Nova Mamoré fire, July 2017 9,024 ha in total; the hectares shown are those it shares with this fire
- 1,046 ha Nova Mamoré fire, August 2017 3,141 ha in total; the hectares shown are those it shares with this fire
- 408 ha Nova Mamoré fire, August 2016 4,811 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
-
5,601 ha reached on 24 Aug0.6 %
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.
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 Aug | 32.6 °C | 49 % | 32 km/h | 0.3 mm | Moderate 12 |
| 25 Aug | 30.5 °C | 57 % | 35 km/h | 9.3 mm | Very low 1 |
| 26 Aug | 25.6 °C | 46 % | 42 km/h | 0.0 mm | Low 6 |
| 27 Aug | 32.5 °C | 39 % | 27 km/h | 0.0 mm | Moderate 12 |
| 28 Aug | 33.0 °C | 41 % | 21 km/h | 0.0 mm | Moderate 13 |
| 29 Aug | 34.1 °C | 40 % | 19 km/h | 0.2 mm | Moderate 13 |
| 30 Aug | 33.8 °C | 43 % | 30 km/h | 0.0 mm | Moderate 14 |
| 31 Aug | 34.3 °C | 45 % | 27 km/h | 1.2 mm | Low 10 |
| 1 Sept | 35.0 °C | 46 % | 25 km/h | 0.3 mm | Moderate 13 |
| 2 Sept | 28.3 °C | 70 % | 35 km/h | 6.8 mm | Very low 1 |
| 3 Sept | 30.5 °C | 44 % | 37 km/h | 0.0 mm | Low 6 |
| 4 Sept | 30.9 °C | 25 % | 43 km/h | 0.0 mm | Moderate 19 |
| 5 Sept | 33.0 °C | 27 % | 29 km/h | 0.0 mm | Moderate 19 |
| 6 Sept | 34.3 °C | 29 % | 23 km/h | 0.0 mm | Moderate 20 |
| 7 Sept | 35.6 °C | 30 % | 25 km/h | 0.0 mm | Moderate 21 |
| 8 Sept | 35.6 °C | 32 % | 23 km/h | 0.0 mm | High 22 |
| 9 Sept | 36.8 °C | 30 % | 26 km/h | 0.0 mm | High 23 |
| 10 Sept | 35.2 °C | 40 % | 26 km/h | 0.2 mm | High 22 |
| 11 Sept | 36.3 °C | 38 % | 19 km/h | 0.4 mm | High 21 |
| 12 Sept after | 36.6 °C | 39 % | 24 km/h | 0.2 mm | High 22 |
| 13 Sept after | 34.9 °C | 42 % | 28 km/h | 0.2 mm | High 23 |
| 14 Sept after | 34.8 °C | 47 % | 34 km/h | 0.1 mm | High 22 |
| 15 Sept after | 33.8 °C | 47 % | 28 km/h | 7.9 mm | Very low 3 |
| 16 Sept after | 25.6 °C | 85 % | 28 km/h | 6.1 mm | Very low 0 |
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 · 285Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 18,479 haNova Mamoré5 August 2019 · 18 days · 4 km away
- 9,024 haNova Mamoré25 July 2017 · 23 days · 8 km away
- 9,270 haNova Mamoré30 July 2016 · 11 days · 9 km away
- 10,976 haNova Mamoré29 July 2021 · 34 days · 10 km away
- 10,234 haNova Mamoré31 July 2019 · 20 days · 14 km away
- 13,807 haNova Mamoré18 August 2022 · 19 days · 27 km away
Frequently asked questions
- How long did the Nova Mamoré fire last?
- GWIS (Copernicus) dates it between 27 August 2018 and 11 September 2018: 16 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 5,564 hectares (55.6 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Nova Mamoré (5,601 ha, 0.6 %).
- What was the weather like?
- During the fire the temperature reached 36.8 °C, humidity dropped to 25 % and gusts hit 43 km/h. The fire danger index (FWI) reached 23, class High.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Brazil (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.
Emergency number: 193 · Emergency number and official warnings ›
Satellite cross-check
History of this page Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
No changes since 24 October 2026.
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. 285 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.