Burned area
satellite only7,829ha
Perimeter published by GWIS (Copernicus).
- Source
- GWIS (Copernicus)
- Date
- 8 Oct 2023 – 2 Nov 2023
+− cross-check
No official record is matched to this page to compare it with.
BO · Bolivia · –
Reyes fire, October 2023 Puerto Menor de Rurrenabaque, Reyes, San Borja
Out · last detection 2 Nov 2023, 18:17 UTC
The fire started on 8 October 2023 in Reyes, Bolivia, and satellites saw it burning for 26 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 7,829 hectares from heat detections, spread across 3 municipalities.
It is the 224th largest in Beni since 2016 (of 858 with a page). Number 72 in Bolivia in 2023, of 247.
Use this data
Compare with…
Use this data
Fire page data · version 2026-11-15matches 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 only26days
8 Oct 2023 to 2 Nov 2023: first and last day with fire on the page.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 2 Nov 2023, 18:17 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 only8 Oct 2023
First day with fire seen by the satellites or the perimeter.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 8 Oct 2023
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only428
VIIRS detections at 375 m. Most intense hotspot: 245 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP + NOAA-20)
- Date
- 8 Oct 2023 – 2 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 only1,307MW
Total radiative power on 16 October 2023; hotspots that day: 34.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 16 Oct 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
model4.8FWI · very low
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 9.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 8 Oct 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
model41.4°C · 23% RH
High of 41.4 °C and minimum humidity of 23% on 22 October 2023; gusts of 70 km/h on 29 October 2023.
- Source
- weather model at the fire’s grid cell
- Date
- 8 Oct 2023 – 2 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
-
logName: Puerto Menor de Rurrenabaque → Reyes.
-
· reconstructed weatherWeather and FWI computed from the ERA5 reanalysis
-
logLast day with fire: 26 October 2023 → 2 November 2023.
-
logStart date: 13 October 2023 → 8 October 2023.
Area logged each night
Move the slider to see which area the page published each day.
Versioned permanent link
https://worldfires.org/en/fire/reyes-2023-10?v=2026-11-15A 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 reyes-2023-10.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023-10-08 | 4 | 8 | 31.9 | 25 | 46 | 17.3 | 36.7 | 5 | 4.8 | muy_bajo | 1 |
| 2023-10-09 | 0 | 0 | 33 | 21.6 | 40 | 9.8 | 23.8 | 0.6 | 8.8 | bajo | 1 |
| 2023-10-10 | 0 | 0 | 37.5 | 24 | 35 | 17.1 | 45.4 | 0 | 24.9 | alto | 1 |
| 2023-10-11 | 14 | 149 | 40.1 | 26.9 | 26 | 18.4 | 46.1 | 0 | 33.3 | alto | 1 |
| 2023-10-12 | 5 | 171 | 40.7 | 26.4 | 28 | 11.3 | 33.1 | 0.1 | 29.6 | alto | 1 |
| 2023-10-13 | 7 | 5 | 32.5 | 25.1 | 44 | 12.7 | 32.4 | 11.6 | 3.4 | muy_bajo | 1 |
| 2023-10-14 | 7 | 17 | 37.2 | 22.9 | 28 | 9.5 | 24.8 | 0 | 6.6 | bajo | 1 |
| 2023-10-15 | 42 | 159 | 40.2 | 24.3 | 25 | 10.7 | 30.2 | 0 | 20.3 | moderado | 1 |
| 2023-10-16 | 34 | 1,307 | 38.3 | 26.1 | 38 | 14 | 37.1 | 0.9 | 24.2 | alto | 1 |
| 2023-10-17 | 34 | 303 | 39.3 | 26.5 | 28 | 14.9 | 41.4 | 0.6 | 27 | alto | 1 |
| 2023-10-18 | 57 | 435 | 39.9 | 26.8 | 28 | 10.5 | 28.4 | 0.5 | 22 | alto | 1 |
| 2023-10-19 | 17 | 47 | 40.2 | 27.3 | 29 | 7.9 | 33.8 | 0.3 | 25.6 | alto | 1 |
| 2023-10-20 | 24 | 36 | 38.8 | 27 | 34 | 10.1 | 24.1 | 2.5 | 25.6 | alto | 1 |
| 2023-10-21 | 37 | 388 | 40 | 25.5 | 26 | 9.8 | 30.6 | 0 | 21.1 | moderado | 1 |
| 2023-10-22 | 48 | 443 | 41.4 | 26.6 | 23 | 12.8 | 36 | 0 | 33.2 | alto | 1 |
| 2023-10-23 | 34 | 84 | 41.3 | 29 | 26 | 16.9 | 42.8 | 0 | 42.9 | muy_alto | 1 |
| 2023-10-24 | 19 | 374 | 40.8 | 28.7 | 27 | 15.6 | 43.9 | 0.1 | 41.6 | muy_alto | 1 |
| 2023-10-25 | 1 | 20 | 40 | 28.9 | 33 | 13.2 | 37.4 | 0.5 | 38.2 | muy_alto | 1 |
| 2023-10-26 | 7 | 11 | 34.7 | 26.3 | 50 | 13.6 | 38.9 | 8.7 | 6.3 | bajo | 1 |
| 2023-10-27 | 0 | 0 | 33.3 | 24.8 | 54 | 17.7 | 60.8 | 14.6 | 4.4 | muy_bajo | 1 |
| 2023-10-28 | 0 | 0 | 31.4 | 26.9 | 57 | 21.4 | 63.7 | 2.7 | 2.9 | muy_bajo | 1 |
| 2023-10-29 | 3 | 14 | 35.3 | 26.2 | 45 | 24.3 | 70.2 | 1.8 | 12.8 | moderado | 1 |
| 2023-10-30 | 13 | 102 | 37.2 | 26.6 | 40 | 23.2 | 65.9 | 0.1 | 19.2 | moderado | 1 |
| 2023-10-31 | 1 | 3 | 32.3 | 25.9 | 55 | 13.7 | 46.4 | 12.3 | 6.3 | bajo | 1 |
| 2023-11-01 | 0 | 0 | 35 | 25.5 | 42 | 16.2 | 46.1 | 5.9 | 1.7 | muy_bajo | 1 |
| 2023-11-02 | 20 | 61 | 37.5 | 24.7 | 35 | 19.1 | 49.3 | 0 | 9.2 | bajo | 1 |
| 2023-11-03 | 0 | 0 | 38.2 | 26 | 35 | 18.1 | 40 | 1 | 17.1 | moderado | 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). Open-Meteo.com · How we build fire pages: methodology
- Burnt area
- 7,829ha
- GWIS perimeter (Copernicus)
- Duration
- 26days
- 8 Oct 2023 – 2 Nov 2023
- Municipalities hit
- 3
- municipalities
- Started on
- 8 Oct
- 2023
- Heat detections
- 428
- in a single hotspot: 245 MW
- Danger at start
- 5
- Very low · FWI index
- Average daily power
- 197MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
8 Oct2 Nov
2 Nov 2023
How it evolved, day by day
8 Oct
16 Oct
20 Oct
25 Oct
2 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
41°high
70km/h · peak gust
23%lowest humidity
It had gone 9 days without rain (1 mm or more) when it started. Rain came after the fire: 1.0 mm on 3 Nov.
This area had burned before
17% of the perimeter overlaps earlier fires recorded since 2016: 1,138 ha in 2020, 864 ha in 2021. Part of it burned more than once, so the yearly figures add up to more than the 1,314 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
-
Puerto Menor de Rurrenabaque 21,240 inhabitants5,448 ha2.2 %
-
2,387 ha0.2 %
-
San Borja 45,798 inhabitants51 ha0.0 %
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) |
|---|---|---|---|---|---|
| 8 Oct | 31.9 °C | 46 % | 37 km/h | 5.0 mm | Very low 5 |
| 9 Oct | 33.0 °C | 40 % | 24 km/h | 0.6 mm | Low 9 |
| 10 Oct | 37.5 °C | 35 % | 45 km/h | 0.0 mm | High 25 |
| 11 Oct | 40.1 °C | 26 % | 46 km/h | 0.0 mm | High 33 |
| 12 Oct | 40.7 °C | 28 % | 33 km/h | 0.1 mm | High 30 |
| 13 Oct | 32.5 °C | 44 % | 32 km/h | 11.6 mm | Very low 3 |
| 14 Oct | 37.2 °C | 28 % | 25 km/h | 0.0 mm | Low 7 |
| 15 Oct | 40.2 °C | 25 % | 30 km/h | 0.0 mm | Moderate 20 |
| 16 Oct | 38.3 °C | 38 % | 37 km/h | 0.9 mm | High 24 |
| 17 Oct | 39.3 °C | 28 % | 41 km/h | 0.6 mm | High 27 |
| 18 Oct | 39.9 °C | 28 % | 28 km/h | 0.5 mm | High 22 |
| 19 Oct | 40.2 °C | 29 % | 34 km/h | 0.3 mm | High 26 |
| 20 Oct | 38.8 °C | 34 % | 24 km/h | 2.5 mm | High 26 |
| 21 Oct | 40.0 °C | 26 % | 31 km/h | 0.0 mm | Moderate 21 |
| 22 Oct | 41.4 °C | 23 % | 36 km/h | 0.0 mm | High 33 |
| 23 Oct | 41.3 °C | 26 % | 43 km/h | 0.0 mm | Very high 43 |
| 24 Oct | 40.8 °C | 27 % | 44 km/h | 0.1 mm | Very high 42 |
| 25 Oct | 40.0 °C | 33 % | 37 km/h | 0.5 mm | Very high 38 |
| 26 Oct | 34.7 °C | 50 % | 39 km/h | 8.7 mm | Low 6 |
| 27 Oct | 33.3 °C | 54 % | 61 km/h | 14.6 mm | Very low 4 |
| 28 Oct | 31.4 °C | 57 % | 64 km/h | 2.7 mm | Very low 3 |
| 29 Oct | 35.3 °C | 45 % | 70 km/h | 1.8 mm | Moderate 13 |
| 30 Oct | 37.2 °C | 40 % | 66 km/h | 0.1 mm | Moderate 19 |
| 31 Oct | 32.3 °C | 55 % | 46 km/h | 12.3 mm | Low 6 |
| 1 Nov | 35.0 °C | 42 % | 46 km/h | 5.9 mm | Very low 2 |
| 2 Nov | 37.5 °C | 35 % | 49 km/h | 0.0 mm | Low 9 |
| 3 Nov after | 38.2 °C | 35 % | 40 km/h | 1.0 mm | Moderate 17 |
Its twins: fires that started in the same weather
It started with an FWI of 4.8, a minimum humidity of 46% and 9 days without rain. Fires in the area that started in weather like this since 2016: 32.
FWI at the start
4.8
Minimum humidity
46 %
Days without rain
9
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Reyes fire, October 2023
7,829 ha
26 days
FWI 4.8
Min. humidity 46 %
Santa Ana fire, October 2016
3,401 ha
6 days
FWI 5.1
Min. humidity 46 %
189 km away, in 2016
First rain (1 mm or more) after it ended: 11.3 mm on 24 Oct.
San Ignacio fire, September 2022
4,439 ha
4 days
FWI 3.6
Min. humidity 47 %
215 km away, in 2022
First rain (1 mm or more) after it ended: 17.8 mm on 28 Sept.
Santa Ana fire, September 2016
7,580 ha
8 days
FWI 8.7
Min. humidity 47 %
105 km away, in 2016
First rain (1 mm or more) after it ended: 1.5 mm on 22 Sept.
Ixiamas fire, September 2024
13,606 ha
13 days
FWI 5.2
Min. humidity 47 %
162 km away, in 2024
First rain (1 mm or more) after it ended: 2.3 mm on 11 Oct.
Santa Ana fire, August 2018
4,619 ha
8 days
FWI 7.7
Min. humidity 46 %
138 km away, in 2018
First rain (1 mm or more) after it ended: 13.7 mm on 1 Sept.
What happened to them
- 10 days
- median duration
- 4,734 ha
- median area
- 12 %
- went past 10,000 ha
- 6.1 mm
- rain at the end (median; 31 of 32 had it)
It was 1.7 times larger than the median of its twins and lasted 26 days, against 10 days.
Only 7 of its 32 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 1 of 32, 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 6.1 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
1.0 mmfirst rain
3 Novthe day after it ended
70km/h · max. gust
It was considered over on 2 Nov, and on 3 Nov 1.0 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 31 of 32, with a median of 6.1 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 · 1 Oct 2023
After · 9 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 21 October 2023 the air beside the fire reached 93 µg/m³ of PM2.5. That day averaged 56: 3.7 times the WHO daily guideline (15).
PM2.5 peak93 µg/m³
Days over the guideline16 days
PM10133 µg/m³
Optical depth1.44
WHO 15
11 Oct15 Oct19 Oct23 Oct27 Oct
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 · 428Every 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
- 8,742 haReyes1 November 2023 · 20 days · 11 km away
- 8,687 haPuerto Menor de Rurrenabaque10 November 2023 · 9 days · 16 km away
- 4,366 haReyes10 November 2023 · 14 days · 23 km away
- 18,998 haReyes17 September 2024 · 40 days · 28 km away
- 4,789 haPuerto Menor de Rurrenabaque4 November 2023 · 15 days · 29 km away
- 23,158 haPuerto Menor de Rurrenabaque3 November 2023 · 19 days · 35 km away
Frequently asked questions
- How long did the Reyes fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 8 October 2023 to 2 November 2023 (26 days). The perimeter dates it from 13 October 2023 to 26 October 2023.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 7,829 hectares (78.3 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 3 municipalities: Puerto Menor de Rurrenabaque (5,448 ha, 2.2 %); Reyes (2,387 ha, 0.2 %); San Borja (51 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 41.4 °C, humidity dropped to 23 % and gusts hit 70 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 Bolivia (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: 32. Their median duration was 10 days and their median area 4,734 ha; 12 % went past 10,000 ha. Only 7 of its 32 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 1 of 32, 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 6.1 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: 119 · 110 · Emergency number and official warnings
Satellite cross-check
History of this page · 3 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
- Name: Puerto Menor de Rurrenabaque → Reyes.
- Last day with fire: 26 October 2023 → 2 November 2023.
- Start date: 13 October 2023 → 8 October 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 13 October 2023 to 26 October 2023. 428 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 ADM3 (Public Domain). 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.