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Chetr Borei fire, December 2024 Chetr Borei

Out · last detection 18 Jan 2025, 05:38 UTC

The fire started on 27 December 2024 in Chetr Borei, Cambodia, and satellites saw it burning for 23 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 2,070 hectares from heat detections, spread across a single municipality.

It is the 78th largest in Kratie since 2016 (of 80 with a page). Number 44 in Cambodia in 2024, of 44.

Compare with…
Burnt area
2,070ha
GWIS perimeter (Copernicus)
Duration
23days
27 Dec 2024 – 18 Jan 2025
Municipalities hit
1
districts
Started on
27 Dec
2024
Heat detections
78
in a single hotspot: 52 MW
Average daily power
28MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 27 Dec18 Jan
18 Jan 2025

How it evolved, day by day

27 Dec 2024 · 1 MW · 1 29 Dec 2024 · 17 MW · 2 30 Dec 2024 · 52 MW · 1 1 Jan 2025 · 6 MW · 1 2 Jan 2025 · 15 MW · 3 4 Jan 2025 · 47 MW · 3 5 Jan 2025 · 27 MW · 8 6 Jan 2025 · 13 MW · 3 7 Jan 2025 · 49 MW · 10 8 Jan 2025 · 141 MW · 12 9 Jan 2025 · 45 MW · 13 10 Jan 2025 · 10 MW · 3 11 Jan 2025 · 15 MW · 4 12 Jan 2025 · 4 MW · 1 16 Jan 2025 · 33 MW · 10 17 Jan 2025 · 1 MW · 2 18 Jan 2025 · 1 MW · 1
27 Dec 1 Jan 5 Jan 8 Jan 11 Jan 17 Jan

Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.

This area had burned before

65% of the perimeter overlaps earlier fires recorded since 2016: 77 ha in 2017, 136 ha in 2019, 1,530 ha in 2021. Part of it burned more than once, so the yearly figures add up to more than the 1,351 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 1.3% of the area of London (21 km² against 1,583 km²).

London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).

This compares size, not location: both shapes are at the same scale, north up, centred on each other.

What happened to each town

  1. Chetr Borei where it started
    2,084 ha reached on 27 Dec
    1.4 %

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.

Before and after, from space

Drag the line to compare the same ground before the fire and after it.

Before · 20 Dec 2024
After · 25 Jan 2025

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 · Copernicus

On 13 January 2025 the air beside the fire reached 42 µg/m³ of PM2.5. That day averaged 20: 1.3 times the WHO daily guideline (15).

PM2.5 peak42 µg/m³
Days over the guideline7 days
PM1043 µg/m³
Optical depth0.49
30311234567891011121314
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 · 78Every 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 timeSatelliteFRP (MW)LatLon

Other fires nearby

All fires in Cambodia ›

Frequently asked questions

How long did the Chetr Borei fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 27 December 2024 to 18 January 2025 (23 days). The perimeter dates it from 1 January 2025 to 11 January 2025.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 2,070 hectares (20.7 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Chetr Borei (2,084 ha, 1.4 %).
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Cambodia (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.

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.
  1. Last day with fire: 11 January 2025 → 18 January 2025.
  2. Start date: 1 January 2025 → 27 December 2024.

RSS Changes to this page

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.

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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 1 January 2025 to 11 January 2025. 78 Suomi-NPP VIIRS detections on those dates.
  • We have not matched this page with any official record.

How we build fire pages: methodology ›

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 4.0 International (CC BY 4.0)). 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.