Burned area
satellite only19,506ha
Perimeter published by GWIS (Copernicus).
- Source
- GWIS (Copernicus)
- Date
- 6 Sept 2017 – 21 Sept 2017
+− cross-check
No official record is matched to this page to compare it with.
BR · Brazil · –
Ourilândia do Norte fire, 6 September 2017 Ourilândia do Norte, Água Azul do Norte
Out · last detection 21 Sept 2017, 04:20 UTC
The fire started on 6 September 2017 in Ourilândia do Norte, Brazil, and satellites saw it burning for 16 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 19,506 hectares from heat detections, spread across 2 municipalities.
It is the 88th largest in Pará since 2016 (of 957 with a page). Number 72 in Brazil in 2017, of 994.
Use this data
Fire page data · version 2026-10-27matches the official recordwith caveatssatellite onlymodel
When copying, the sentence is
Tick the figures you want: they make up the lede and the CSV.
Duration by satellite
satellite only16days
6 Sept 2017 to 21 Sept 2017: first and last day with fire on the page.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 21 Sept 2017, 04:20 UTC
+− cross-check
Satellites pass a few times a day and cloud or smoke can hide the fire: a lack of detections is not an official extinction. Each country’s emergency service declares a fire contained or out.
Start
satellite only6 Sept 2017
First day with fire seen by the satellites or the perimeter.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 6 Sept 2017
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
The worst day
satellite only4,167MW
Total radiative power on 16 September 2017; hotspots that day: 141.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 16 Sept 2017
+− cross-check
Fire radiative power (FRP) measures the energy the fire gives off when the satellite passes. Added up by day, it compares intensity, not area.
Danger at the start
model42.4FWI · very high
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 13.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 6 Sept 2017, local noon
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
This is an index computed from weather model data, not a measurement of the fire nor an official warning. Danger warnings are issued by each country’s authority. Emergency number and official warnings
Weather during the fire
model35.8°C · 29% RH
High of 35.8 °C and minimum humidity of 29% on 15 September 2017; gusts of 46 km/h on 15 September 2017.
- Source
- weather model at the fire’s grid cell
- Date
- 6 Sept 2017 – 21 Sept 2017
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
These are model values for a cell of about 25 km, not from a weather station: they may differ from what was measured on the ground.
Living inside
model≈ 100people
Estimated residents inside the perimeter and 0.65 ha of built-up area (100 m grid, epoch 2015).
- Source
- GHSL R2023A · JRC
- Date
- calculated on 24 October 2026
+− cross-check
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.
This page’s change log has been kept since 24 October 2026: every night what it publishes is compared and the difference is logged. Anything earlier is reconstructed from each source’s date and marked as reconstructed.
Show
-
logStart date: 30 August 2017 → 6 September 2017.
-
· reconstructed weatherWeather and FWI computed from the ERA5 reanalysis
-
logStart date: 6 September 2017 → 30 August 2017.
-
· reconstructed GHSLPopulation and built-up area computed
Area logged each night
Move the slider to see which area the page published each day.
Versioned permanent link
https://worldfires.org/en/fire/ourilandia-do-norte-2017-09-2?v=2026-10-27A version keeps the area, dates, name and official record; the area as it was logged (changes under 2% are not logged). The map, hotspots and weather always show today’s data.
Citation
A lede of about 60 words figures only, no adjectives
CSV for this fire ourilandia-do-norte-2017-09-2.csv · daily, no individual hotspots
| fecha | focos_viirs | frp_mw | tmax_c | tmin_c | hr_min_pct | viento_max_kmh | racha_max_kmh | precip_mm | fwi | clase_fwi | dentro_del_incendio |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017-09-06 | 20 | 208 | 34.2 | 21.8 | 32 | 19.1 | 43.2 | 0 | 42.4 | muy_alto | 1 |
| 2017-09-07 | 25 | 1,088 | 34 | 22.3 | 37 | 17.1 | 40.3 | 0 | 38.3 | muy_alto | 1 |
| 2017-09-08 | 18 | 58 | 33.3 | 22.7 | 41 | 16.1 | 42.5 | 0 | 34.8 | alto | 1 |
| 2017-09-09 | 16 | 18 | 32.6 | 23.4 | 40 | 17.9 | 41.8 | 0 | 36.3 | alto | 1 |
| 2017-09-10 | 3 | 10 | 35.1 | 21.9 | 32 | 19.1 | 45 | 0 | 38.4 | muy_alto | 1 |
| 2017-09-11 | 5 | 23 | 35.2 | 23 | 34 | 15.5 | 36.7 | 0 | 35.4 | alto | 1 |
| 2017-09-12 | 71 | 1,787 | 34.8 | 22.4 | 29 | 18.9 | 42.8 | 0 | 40.1 | muy_alto | 1 |
| 2017-09-13 | 87 | 402 | 34 | 22.9 | 33 | 15.5 | 38.2 | 0 | 37.2 | alto | 1 |
| 2017-09-14 | 80 | 285 | 34.4 | 21.5 | 33 | 15.9 | 37.1 | 0 | 37.8 | alto | 1 |
| 2017-09-15 | 122 | 1,487 | 35.8 | 21.9 | 29 | 20.7 | 46.4 | 0 | 42.9 | muy_alto | 1 |
| 2017-09-16 | 141 | 4,167 | 34.7 | 23.6 | 27 | 20.2 | 44.6 | 0 | 43.1 | muy_alto | 1 |
| 2017-09-17 | 79 | 261 | 34.5 | 22.5 | 27 | 17.7 | 39.6 | 0 | 40.9 | muy_alto | 1 |
| 2017-09-18 | 30 | 190 | 34.7 | 22.8 | 30 | 12.2 | 32.8 | 0 | 36.1 | alto | 1 |
| 2017-09-19 | 24 | 75 | 34.8 | 22 | 29 | 14.9 | 35.3 | 0 | 38.7 | muy_alto | 1 |
| 2017-09-20 | 8 | 36 | 33.3 | 22.7 | 45 | 16.2 | 38.9 | 0.4 | 33.6 | alto | 1 |
| 2017-09-21 | 8 | 20 | 32.5 | 23 | 46 | 15 | 40 | 0 | 31.3 | alto | 1 |
| 2017-09-22 | 0 | 0 | 34.2 | 24.3 | 33 | 19.1 | 42.5 | 0 | 37.6 | alto | 0 |
| 2017-09-23 | 0 | 0 | 33.3 | 24.6 | 41 | 17.8 | 42.8 | 0 | 36.6 | alto | 0 |
| 2017-09-24 | 0 | 0 | 33.4 | 22.8 | 42 | 13.1 | 32 | 0 | 32.3 | alto | 0 |
| 2017-09-25 | 0 | 0 | 32.7 | 23.3 | 42 | 15.4 | 35.3 | 0 | 33.8 | alto | 0 |
| 2017-09-26 | 0 | 0 | 33.7 | 22.1 | 41 | 13.2 | 31 | 0 | 32.2 | alto | 0 |
| 2017-09-27 | 0 | 0 | 33.4 | 22.3 | 43 | 12.6 | 34.6 | 0 | 31.4 | alto | 0 |
| 2017-09-28 | 0 | 0 | 34.4 | 23.2 | 42 | 12.9 | 36.7 | 0 | 31.8 | alto | 0 |
| 2017-09-29 | 0 | 0 | 33.8 | 23.6 | 44 | 13.3 | 40.3 | 0.2 | 31.7 | alto | 0 |
| 2017-09-30 | 0 | 0 | 31.7 | 24.2 | 54 | 11.2 | 30.6 | 0 | 25.1 | alto | 0 |
| 2017-10-01 | 0 | 0 | 32.2 | 23.3 | 48 | 14 | 34.6 | 0.1 | 27.1 | alto | 0 |
It is generated in your browser from this page’s data: one file per fire, aggregated by day and without individual hotspots.
Live widget for your story
It updates itself while the fire is still active and links to this page. Free, with the attribution shown at the bottom.
Sources for this page: GWIS (Copernicus), NASA FIRMS (VIIRS), ERA5 (ECMWF/Copernicus C3S) · Open-Meteo.com (CC BY 4.0), GHSL (JRC). Open-Meteo.com · How we build fire pages: methodology
- Burnt area
- 19,506ha
- GWIS perimeter (Copernicus)
- Duration
- 16days
- 6 Sept 2017 – 21 Sept 2017
- Municipalities hit
- 2
- municipalities
- Started on
- 6 Sept
- 2017
- Heat detections
- 737
- in a single hotspot: 0 MW
- Danger at start
- 42
- Very high · FWI index
- Average daily power
- 632MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
6 Sept21 Sept
21 Sept 2017
How it evolved, day by day
6 Sept
10 Sept
16 Sept
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
36°high
46km/h · peak gust
27%lowest humidity
It had gone 13 days without rain (1 mm or more) when it started.
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
-
13,071 ha0.9 %
-
Água Azul do Norte 18,080 inhabitants6,557 ha0.9 %
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 2015Built-up area0.65 ha
Residents≈ 100
Inside the perimeter there were about 0.65 hectares of built-up land and about 100 residents (GHSL 2015, 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.
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 | 34.2 °C | 32 % | 43 km/h | 0.0 mm | Very high 42 |
| 7 Sept | 34.0 °C | 37 % | 40 km/h | 0.0 mm | Very high 38 |
| 8 Sept | 33.3 °C | 41 % | 42 km/h | 0.0 mm | High 35 |
| 9 Sept | 32.6 °C | 40 % | 42 km/h | 0.0 mm | High 36 |
| 10 Sept | 35.1 °C | 32 % | 45 km/h | 0.0 mm | Very high 38 |
| 11 Sept | 35.2 °C | 34 % | 37 km/h | 0.0 mm | High 35 |
| 12 Sept | 34.8 °C | 29 % | 43 km/h | 0.0 mm | Very high 40 |
| 13 Sept | 34.0 °C | 33 % | 38 km/h | 0.0 mm | High 37 |
| 14 Sept | 34.4 °C | 33 % | 37 km/h | 0.0 mm | High 38 |
| 15 Sept | 35.8 °C | 29 % | 46 km/h | 0.0 mm | Very high 43 |
| 16 Sept | 34.7 °C | 27 % | 45 km/h | 0.0 mm | Very high 43 |
| 17 Sept | 34.5 °C | 27 % | 40 km/h | 0.0 mm | Very high 41 |
| 18 Sept | 34.7 °C | 30 % | 33 km/h | 0.0 mm | High 36 |
| 19 Sept | 34.8 °C | 29 % | 35 km/h | 0.0 mm | Very high 39 |
| 20 Sept | 33.3 °C | 45 % | 39 km/h | 0.4 mm | High 34 |
| 21 Sept | 32.5 °C | 46 % | 40 km/h | 0.0 mm | High 31 |
| 22 Sept after | 34.2 °C | 33 % | 42 km/h | 0.0 mm | High 38 |
| 23 Sept after | 33.3 °C | 41 % | 43 km/h | 0.0 mm | High 37 |
| 24 Sept after | 33.4 °C | 42 % | 32 km/h | 0.0 mm | High 32 |
| 25 Sept after | 32.7 °C | 42 % | 35 km/h | 0.0 mm | High 34 |
| 26 Sept after | 33.7 °C | 41 % | 31 km/h | 0.0 mm | High 32 |
| 27 Sept after | 33.4 °C | 43 % | 35 km/h | 0.0 mm | High 31 |
| 28 Sept after | 34.4 °C | 42 % | 37 km/h | 0.0 mm | High 32 |
| 29 Sept after | 33.8 °C | 44 % | 40 km/h | 0.2 mm | High 32 |
| 30 Sept after | 31.7 °C | 54 % | 31 km/h | 0.0 mm | High 25 |
| 1 Oct after | 32.2 °C | 48 % | 35 km/h | 0.1 mm | High 27 |
Its twins: fires that started in the same weather
It started with an FWI of 42.4, a minimum humidity of 32% and 13 days without rain. Fires in the area that started in weather like this since 2016: 1.
FWI at the start
42.4
Minimum humidity
32 %
Days without rain
13
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Ourilândia do Norte fire, 6 September 2017
19,506 ha
16 days
FWI 42.4
Min. humidity 32 %
São Félix do Xingu fire, September 2020
4,258 ha
8 days
FWI 35.8
Min. humidity 26 %
232 km away, in 2020
First rain (1 mm or more) after it ended: none in the following ten days.
What happened to them
Fires in the area that started in similar weather: 1. With fewer than 15 we give no figures: they would be more noise than signal.
This is a bank of analogues: it shows what usually happens, not what will happen. With fewer than 15 twins we give no figures. How we calculate it
How it ended
—first rain
—no rain in ten days
46km/h · max. gust
It was considered over on 21 Sept, and not even 1 mm fell in the following ten days: it went out without rain.
Weather on this page: Open-Meteo.com (CC BY 4.0) · Copernicus Climate Change Service (ERA5)
How a twin is chosen
- Same area: fires that have already ended, less than 250 km from this one, since 2016.
- Same start: we compare the FWI on the first day, the minimum humidity that day and the run of days without rain before it. The slider sets how much they may differ.
- Only pages with final weather data (ERA5 reanalysis) calculated in the same way as this fire’s; agricultural and grass burns and pages with data under review are left out.
- Fires burning at the same time as this one (a week before or after) are left out: they share the same spell of weather and do not count as a precedent.
- They are sorted by similarity, and the outlines of the first five are drawn.
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
↔
Before · 30 Aug 2017
After · 28 Sept 2017
Sentinel-2 did not pass over on that day. Try another date, or use false colour, which is daily.
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 · 0Every satellite heat detection, one by one, with time, satellite, power and coordinates.
⬇ Download CSV
Times in UTC. Each detection is a 375 m pixel: a large fire yields hundreds per pass.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 27,507 haÁgua Azul do NorteAugust 2020 · 27 days · 4 km away
- 51,464 haOurilândia do Norte17 August 2017 · 40 days · 29 km away
- 47,723 haOurilândia do Norte22 August 2024 · 32 days · 33 km away
- 21,428 haOurilândia do Norte2 September 2020 · 18 days · 33 km away
- 35,998 haBannachAugust 2020 · 23 days · 40 km away
Frequently asked questions
- How long did the Ourilândia do Norte fire last?
- GWIS (Copernicus) dates it between 6 September 2017 and 21 September 2017: 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 19,506 hectares (195.1 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Ourilândia do Norte (13,071 ha, 0.9 %); Água Azul do Norte (6,557 ha, 0.9 %).
- What was the weather like?
- During the fire the temperature reached 35.8 °C, humidity dropped to 27 % and gusts hit 46 km/h. The fire danger index (FWI) reached 43, class Very 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 · 2 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
- Start date: 30 August 2017 → 6 September 2017.
- Start date: 6 September 2017 → 30 August 2017.
RSS Changes to this page With cross-checks and a citable version
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. No 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 2015, 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 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.