Riberalta fire, August 2026 Riberalta
The fire started on 27 August 2026 in Riberalta, Bolivia, and satellites saw it burning for 17 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,383 hectares from heat detections, spread across a single municipality.
It is the 765th largest in Beni since 2016 (of 902 with a page). Number 58 in Bolivia in 2026, of 68.
- Burnt area
- 3,383ha
- GWIS perimeter (Copernicus)
- Duration
- 17days
- 27 Aug 2026 – 12 Sept 2026
- Municipalities hit
- 1
- municipalities
- Started on
- 27 Aug
- 2026
- Heat detections
- 382
- in a single hotspot: 75 MW
- Danger at start
- 22
- High · FWI index
- Energy released
- 4.0GW
- 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 7 days without rain (1 mm or more) when it started. Rain came after the fire: 2.9 mm on 13 Sept.
This area had burned before
83% of the perimeter overlaps earlier fires recorded since 2016: 6 ha in 2021, 3 ha in 2023, 2,755 ha in 2024, 138 ha in 2025.
What happened to each town
-
3,409 ha reached on 27 Aug0.3 %
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) |
|---|---|---|---|---|---|
| 27 Aug | 36.0 °C | 38 % | 32 km/h | 0.0 mm | High 22 |
| 28 Aug | 35.7 °C | 41 % | 36 km/h | 0.0 mm | High 24 |
| 29 Aug | 35.8 °C | 41 % | 38 km/h | 0.0 mm | High 25 |
| 30 Aug | 36.8 °C | 40 % | 33 km/h | 0.0 mm | High 25 |
| 31 Aug | 36.8 °C | 36 % | 37 km/h | 0.0 mm | High 28 |
| 1 Sept | 36.7 °C | 39 % | 31 km/h | 0.0 mm | High 27 |
| 2 Sept | 34.8 °C | 42 % | 30 km/h | 0.0 mm | High 26 |
| 3 Sept | 35.7 °C | 43 % | 26 km/h | 0.0 mm | High 26 |
| 4 Sept | 35.2 °C | 46 % | 32 km/h | 0.1 mm | High 25 |
| 5 Sept | 33.5 °C | 57 % | 27 km/h | 3.5 mm | Low 5 |
| 6 Sept | 26.4 °C | 75 % | 42 km/h | 16.7 mm | Very low 0 |
| 7 Sept | 24.9 °C | 53 % | 35 km/h | 0.0 mm | Very low 3 |
| 8 Sept | 31.9 °C | 46 % | 14 km/h | 0.0 mm | Low 7 |
| 9 Sept | 34.2 °C | 42 % | 28 km/h | 0.0 mm | Moderate 15 |
| 10 Sept | 35.5 °C | 42 % | 30 km/h | 0.0 mm | Moderate 17 |
| 11 Sept | 36.0 °C | 42 % | 36 km/h | 0.0 mm | Moderate 19 |
| 12 Sept | 33.8 °C | 55 % | 33 km/h | 19.8 mm | Very low 1 |
| 13 Sept after | 25.3 °C | 69 % | 41 km/h | 2.9 mm | Very low 1 |
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.
The smoke
CAMS · CopernicusOn 2 September 2026 the air beside the fire reached 124 µg/m³ of PM2.5. That day averaged 68: 4.5 times the WHO daily guideline (15).
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 · 382Every 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 Riberalta fire last?
- GWIS (Copernicus) dates it between 27 August 2026 and 12 September 2026: 17 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 3,383 hectares (33.8 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Riberalta (3,409 ha, 0.3 %).
- What was the weather like?
- During the fire the temperature reached 36.8 °C, humidity dropped to 36 % and gusts hit 42 km/h. The fire danger index (FWI) reached 28, class 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.
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
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 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.