Burned area
satellite only9,274ha
Perimeter published by GWIS (Copernicus).
- Source
- GWIS (Copernicus)
- Date
- 5 Nov 2023 – 19 Nov 2023
+− cross-check
No official record is matched to this page to compare it with.
BR · Brazil · –
Pimenteiras do Oeste fire, 5 November 2023 Pimenteiras do Oeste
Out · last detection 19 Nov 2023, 17:08 UTC
The fire started on 5 November 2023 in Pimenteiras do Oeste, Brazil, and satellites saw it burning for 15 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 9,274 hectares from heat detections, spread across a single municipality.
It is the 42th largest in Rondônia since 2016 (of 288 with a page). Number 55 in Brazil in 2023, of 430.
Use this data
Fire page data · version 2026-10-25matches 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 only15days
5 Nov 2023 to 19 Nov 2023: first and last day with fire on the page.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 19 Nov 2023, 17:08 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 only5 Nov 2023
First day with fire seen by the satellites or the perimeter.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 5 Nov 2023
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only385
VIIRS detections at 375 m. Most intense hotspot: 424 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 5 Nov 2023 – 19 Nov 2023
+− cross-check
There is no official record to compare with. Each hotspot is a pixel detected in one satellite pass, not a separate fire.
The worst day
satellite only6,120MW
Total radiative power on 18 November 2023; hotspots that day: 102.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 18 Nov 2023
+− 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
model15.7FWI · moderate
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 5.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 5 Nov 2023, 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
model39.1°C · 36% RH
High of 39.1 °C and minimum humidity of 36% on 7 November 2023; gusts of 45 km/h on 18 November 2023.
- Source
- weather model at the fire’s grid cell
- Date
- 5 Nov 2023 – 19 Nov 2023
- 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.
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
-
· reconstructed weatherWeather and FWI computed from the ERA5 reanalysis
-
logStart date: 8 November 2023 → 5 November 2023.
-
· reconstructed GHSLPopulation and built-up area computed
What was saved on 25 October 2026
Every night a snapshot of what the page shows is saved. If anything changes, it appears in the list as a log entry.
- Area
- 9,274 ha
- Dates
- 5 Nov 2023 – 19 Nov 2023
- Name
- Pimenteiras do Oeste
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/pimenteiras-do-oeste-2023-11-3?v=2026-10-25A 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 pimenteiras-do-oeste-2023-11-3.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023-11-05 | 0 | 0 | 33.9 | 24.2 | 47 | 8.8 | 22 | 0 | 15.7 | moderado | 1 |
| 2023-11-06 | 3 | 20 | 37.7 | 25.4 | 35 | 8 | 12.6 | 0.2 | 15.8 | moderado | 1 |
| 2023-11-07 | 0 | 0 | 39.1 | 27.2 | 36 | 8.8 | 26.3 | 0.1 | 21.6 | alto | 1 |
| 2023-11-08 | 3 | 19 | 37.3 | 26.5 | 39 | 11.9 | 28.1 | 0 | 25.6 | alto | 1 |
| 2023-11-09 | 0 | 0 | 36.3 | 26.8 | 40 | 8.7 | 25.2 | 0 | 22.9 | alto | 1 |
| 2023-11-10 | 12 | 361 | 33.9 | 26.6 | 52 | 10.4 | 25.6 | 0.5 | 22 | alto | 1 |
| 2023-11-11 | 19 | 93 | 36.8 | 26.6 | 39 | 12.5 | 33.8 | 0 | 26.5 | alto | 1 |
| 2023-11-12 | 15 | 165 | 36.4 | 27.3 | 37 | 19.5 | 44.3 | 0.2 | 32.2 | alto | 1 |
| 2023-11-13 | 0 | 0 | 36.5 | 26.4 | 41 | 12.3 | 34.2 | 0 | 28.8 | alto | 1 |
| 2023-11-14 | 2 | 12 | 36.7 | 26.5 | 40 | 10.4 | 32.4 | 2.8 | 28.5 | alto | 1 |
| 2023-11-15 | 6 | 52 | 36.8 | 25.8 | 38 | 13.9 | 36.7 | 0 | 20.2 | moderado | 1 |
| 2023-11-16 | 17 | 360 | 37.6 | 27 | 36 | 16.8 | 42.5 | 0 | 32.4 | alto | 1 |
| 2023-11-17 | 117 | 1,640 | 38.1 | 27.3 | 34 | 17.3 | 41.4 | 0 | 36 | alto | 1 |
| 2023-11-18 | 102 | 6,120 | 37.5 | 27.4 | 34 | 17.3 | 45.4 | 0 | 38.3 | muy_alto | 1 |
| 2023-11-19 | 89 | 409 | 36.3 | 28.6 | 43 | 12.6 | 37.4 | 0.7 | 32.6 | alto | 1 |
| 2023-11-20 | 0 | 0 | 28.7 | 23.9 | 59 | 9.4 | 17.6 | 13.4 | 0 | muy_bajo | 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
- 9,274ha
- GWIS perimeter (Copernicus)
- Duration
- 15days
- 5 Nov 2023 – 19 Nov 2023
- Municipalities hit
- 1
- municipalities
- Started on
- 5 Nov
- 2023
- Heat detections
- 385
- in a single hotspot: 424 MW
- Danger at start
- 16
- Moderate · FWI index
- Average daily power
- 841MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
5 Nov19 Nov
19 Nov 2023
How it evolved, day by day
6 Nov
11 Nov
15 Nov
18 Nov
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
39°high
45km/h · peak gust
34%lowest humidity
It had gone 5 days without rain (1 mm or more) when it started. Rain came after the fire: 13.4 mm on 20 Nov.
This area had burned before
41% of the perimeter overlaps earlier fires recorded since 2016: 419 ha in 2016, 410 ha in 2017, 252 ha in 2018, 2,487 ha in 2020, 804 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 3,797 ha that had burned before.
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
-
Pimenteiras do Oeste where it started7,585 ha reached on 6 Nov1.2 %
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 2025Built-up area< 0.1 ha
Residents< 20
Inside the perimeter there was no noticeable built-up land and almost nobody lived there (GHSL 2025, 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. The GHSL 2025 epoch is a projection made from 2020 and earlier data.
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) |
|---|---|---|---|---|---|
| 5 Nov | 33.9 °C | 47 % | 22 km/h | 0.0 mm | Moderate 16 |
| 6 Nov | 37.7 °C | 35 % | 13 km/h | 0.2 mm | Moderate 16 |
| 7 Nov | 39.1 °C | 36 % | 26 km/h | 0.1 mm | High 22 |
| 8 Nov | 37.3 °C | 39 % | 28 km/h | 0.0 mm | High 26 |
| 9 Nov | 36.3 °C | 40 % | 25 km/h | 0.0 mm | High 23 |
| 10 Nov | 33.9 °C | 52 % | 26 km/h | 0.5 mm | High 22 |
| 11 Nov | 36.8 °C | 39 % | 34 km/h | 0.0 mm | High 26 |
| 12 Nov | 36.4 °C | 37 % | 44 km/h | 0.2 mm | High 32 |
| 13 Nov | 36.5 °C | 41 % | 34 km/h | 0.0 mm | High 29 |
| 14 Nov | 36.7 °C | 40 % | 32 km/h | 2.8 mm | High 28 |
| 15 Nov | 36.8 °C | 38 % | 37 km/h | 0.0 mm | Moderate 20 |
| 16 Nov | 37.6 °C | 36 % | 42 km/h | 0.0 mm | High 32 |
| 17 Nov | 38.1 °C | 34 % | 41 km/h | 0.0 mm | High 36 |
| 18 Nov | 37.5 °C | 34 % | 45 km/h | 0.0 mm | Very high 38 |
| 19 Nov | 36.3 °C | 43 % | 37 km/h | 0.7 mm | High 33 |
| 20 Nov after | 28.7 °C | 59 % | 18 km/h | 13.4 mm | Very low 0 |
Its twins: fires that started in the same weather
It started with an FWI of 15.7, a minimum humidity of 47% and 5 days without rain. Fires in the area that started in weather like this since 2016: 16.
FWI at the start
15.7
Minimum humidity
47 %
Days without rain
5
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Pimenteiras do Oeste fire, 5 November 2023
9,274 ha
15 days
FWI 15.7
Min. humidity 47 %
Pimenteiras do Oeste fire, September 2023
7,016 ha
9 days
FWI 14.0
Min. humidity 46 %
50 km away, in 2023
First rain (1 mm or more) after it ended: 5.9 mm on 29 Sept.
São Francisco do Guaporé fire, October 2017
3,745 ha
3 days
FWI 14.1
Min. humidity 47 %
166 km away, in 2017
First rain (1 mm or more) after it ended: 2.9 mm on 21 Oct.
Baures fire, August 2025
13,324 ha
9 days
FWI 18.6
Min. humidity 46 %
68 km away, in 2025
First rain (1 mm or more) after it ended: none in the following ten days.
Baures fire, October 2017
9,571 ha
8 days
FWI 15.4
Min. humidity 45 %
144 km away, in 2017
First rain (1 mm or more) after it ended: 8.2 mm on 19 Oct.
Concepción fire, September 2025
3,711 ha
23 days
FWI 14.4
Min. humidity 47 %
194 km away, in 2025
First rain (1 mm or more) after it ended: 17.1 mm on 18 Oct.
What happened to them
- 10 days
- median duration
- 7,087 ha
- median area
- 31 %
- went past 10,000 ha
- 5.9 mm
- rain at the end (median; 15 of 16 had it)
It burned an area similar to its twins (9,274 ha against a median of 7,087 ha) and lasted 15 days, against 10 days.
In 1 of 16, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 5.9 mm.
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
13.4 mmfirst rain
20 Novthe day after it ended
45km/h · max. gust
It was considered over on 19 Nov, and on 20 Nov 13.4 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 15 of 16, with a median of 5.9 mm.
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 · 29 Oct 2023
After · 26 Nov 2023
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.
The smoke
CAMS · CopernicusOn 20 November 2023 the air beside the fire reached 656 µg/m³ of PM2.5. That day averaged 222: 15 times the WHO daily guideline (15).
PM2.5 peak656 µg/m³
Days over the guideline15 days
PM10937 µg/m³
Optical depth5.13
WHO 15
6 Nov10 Nov14 Nov18 Nov22 Nov
Good
Fair
Moderate
Poor
Very poor
Extremely poor
Particles from the Copernicus CAMS model at the centre of the perimeter; these are not measurements in each town. The pale bar is the worst hour, the solid one the daily average.
Open-Meteo.com (CC BY 4.0) · Copernicus Atmosphere Monitoring Service (CAMS)
Detections table · 385Every 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
- 8,564 haCerejeiras1 October 2020 · 17 days · 22 km away
- 21,007 haPimenteiras do OesteSeptember 2026 · 7 days · 30 km away
- 10,650 haSan Ignacio16 September 2021 · 17 days · 32 km away
- 17,964 haSan Ignacio27 August 2020 · 24 days · 33 km away
- 32,032 haCerejeirasSeptember 2023 · 22 days · 34 km away
- 36,183 haSan Ignacio8 November 2023 · 12 days · 35 km away
Frequently asked questions
- How long did the Pimenteiras do Oeste fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 5 November 2023 to 19 November 2023 (15 days). The perimeter dates it from 8 November 2023 to 19 November 2023.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 9,274 hectares (92.7 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Pimenteiras do Oeste (7,585 ha, 1.2 %).
- What was the weather like?
- During the fire the temperature reached 39.1 °C, humidity dropped to 34 % and gusts hit 45 km/h. The fire danger index (FWI) reached 38, 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.
- How did the fires that started in similar weather in this area end?
- Fires less than 250 km away that started since 2016 with a similar FWI, humidity and dry spell: 16. Their median duration was 10 days and their median area 7,087 ha; 31 % went past 10,000 ha. In 1 of 16, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 5.9 mm.
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 · 1 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
- Start date: 8 November 2023 → 5 November 2023.
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 adjusted with the VIIRS detections inside the perimeter, which said 8 November 2023 to 19 November 2023. 385 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 2025, 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.