Prainha fire, 18 November 2017 Prainha, Almeirim
The fire started on 18 November 2017 in Prainha, Brazil, and satellites saw it burning for 22 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 5,302 hectares from heat detections, spread across 2 municipalities.
It is the 478th largest in Pará since 2016 (of 1096 with a page). Number 430 in Brazil in 2017, of 994.
- Burnt area
- 5,302ha
- GWIS perimeter (Copernicus)
- Duration
- 22days
- 18 Nov 2017 – 9 Dec 2017
- Municipalities hit
- 2
- municipalities
- Started on
- 18 Nov
- 2017
- Heat detections
- 313
- in a single hotspot: 109 MW
- Danger at start
- 28
- High · FWI index
- Energy released
- 2.6GW
- 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 6 days without rain (1 mm or more) when it started. Rain came after the fire: 2.0 mm on 11 Dec.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
What happened to each town
-
3,678 ha reached on 18 Nov0.2 %
-
Almeirim 35,114 inhabitants1,659 ha reached on 19 Nov0.0 %
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) |
|---|---|---|---|---|---|
| 18 Nov | 35.2 °C | 37 % | 35 km/h | 0.0 mm | High 28 |
| 19 Nov | 36.5 °C | 37 % | 30 km/h | 0.0 mm | High 27 |
| 20 Nov | 35.6 °C | 42 % | 36 km/h | 0.0 mm | High 28 |
| 21 Nov | 36.2 °C | 36 % | 31 km/h | 0.0 mm | High 27 |
| 22 Nov | 37.6 °C | 34 % | 28 km/h | 0.1 mm | High 28 |
| 23 Nov | 35.6 °C | 46 % | 34 km/h | 2.0 mm | Moderate 14 |
| 24 Nov | 34.4 °C | 49 % | 45 km/h | 0.0 mm | Moderate 21 |
| 25 Nov | 34.9 °C | 45 % | 43 km/h | 0.0 mm | High 24 |
| 26 Nov | 35.4 °C | 42 % | 36 km/h | 0.0 mm | High 24 |
| 27 Nov | 33.9 °C | 48 % | 37 km/h | 0.0 mm | High 25 |
| 28 Nov | 35.3 °C | 45 % | 49 km/h | 0.0 mm | High 26 |
| 29 Nov | 36.1 °C | 41 % | 46 km/h | 0.1 mm | High 26 |
| 30 Nov | 36.0 °C | 42 % | 36 km/h | 0.0 mm | High 25 |
| 1 Dec | 35.7 °C | 44 % | 46 km/h | 0.0 mm | High 27 |
| 2 Dec | 34.9 °C | 42 % | 44 km/h | 0.0 mm | High 29 |
| 3 Dec | 35.4 °C | 41 % | 38 km/h | 0.0 mm | High 27 |
| 4 Dec | 36.8 °C | 33 % | 46 km/h | 0.0 mm | High 34 |
| 5 Dec | 35.6 °C | 41 % | 44 km/h | 0.0 mm | High 36 |
| 6 Dec | 34.9 °C | 47 % | 41 km/h | 0.1 mm | High 27 |
| 7 Dec | 36.0 °C | 43 % | 31 km/h | 0.3 mm | High 28 |
| 8 Dec | 36.5 °C | 43 % | 38 km/h | 0.8 mm | High 24 |
| 9 Dec | 35.7 °C | 44 % | 37 km/h | 0.1 mm | High 25 |
| 10 Dec after | 37.3 °C | 38 % | 35 km/h | 0.0 mm | High 28 |
| 11 Dec after | 36.8 °C | 41 % | 35 km/h | 2.0 mm | Moderate 18 |
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 · 313Every 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 Prainha fire last?
- GWIS (Copernicus) dates it between 18 November 2017 and 9 December 2017: 22 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 5,302 hectares (53.0 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Prainha (3,678 ha, 0.2 %); Almeirim (1,659 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 37.6 °C, humidity dropped to 33 % and gusts hit 49 km/h. The fire danger index (FWI) reached 36, 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
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 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.