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KH · Cambodia · –

Kaoh Nheaek fire, February 2024 Kaoh Nheaek, Pech Chreada

Out · last detection 17 Feb 2024, 05:38 UTC

The fire started on 4 February 2024 in Kaoh Nheaek, Cambodia, and satellites saw it burning for 14 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 2,495 hectares from heat detections, spread across 2 municipalities.

It is the 56th largest in Mondulkiri since 2016 (of 84 with a page). Number 31 in Cambodia in 2024, of 41.

The power measured by the satellite is low (17.6 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.

Burnt area
2,495ha
GWIS perimeter (Copernicus)
Duration
14days
4 Feb 2024 – 17 Feb 2024
Municipalities hit
2
districts
Started on
4 Feb
2024
Heat detections
50
in a single hotspot: 18 MW
Danger at start
23
High · FWI index
Average daily power
27MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 4 Feb17 Feb
17 Feb 2024

How it evolved, day by day

5 Feb 2024 · 14 MW · 3 6 Feb 2024 · 2 MW · 2 8 Feb 2024 · 13 MW · 2 9 Feb 2024 · 2 MW · 3 10 Feb 2024 · 107 MW · 21 11 Feb 2024 · 39 MW · 10 12 Feb 2024 · 36 MW · 6 13 Feb 2024 · 14 MW · 1 17 Feb 2024 · 16 MW · 2
5 Feb 8 Feb 10 Feb 12 Feb 17 Feb

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

The weather it burned in

35°high
59km/h · peak gust
30%lowest humidity

It had gone 42 days without rain (1 mm or more) when it started.

This area had burned before

89% of the perimeter overlaps earlier fires recorded since 2016: 1,762 ha in 2016, 250 ha in 2020, 1,093 ha in 2021, 990 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 2,225 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 1.6% of the area of London (25 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. Kaoh Nheaek where it started
    1,509 ha reached on 8 Feb
    0.3 %
  2. 1,000 ha reached on 5 Feb
    0.3 %

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 2025
Built-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)
4 Feb 33.5 °C 43 % 22 km/h 0.0 mm High 23
5 Feb 34.1 °C 47 % 23 km/h 0.0 mm High 22
6 Feb 35.0 °C 37 % 20 km/h 0.0 mm High 24
7 Feb 34.3 °C 45 % 27 km/h 0.0 mm High 26
8 Feb 33.2 °C 53 % 19 km/h 0.3 mm Moderate 20
9 Feb 33.9 °C 44 % 39 km/h 0.0 mm High 27
10 Feb 31.7 °C 40 % 59 km/h 0.0 mm High 35
11 Feb 30.1 °C 42 % 58 km/h 0.0 mm High 34
12 Feb 30.7 °C 41 % 53 km/h 0.0 mm High 31
13 Feb 32.4 °C 42 % 44 km/h 0.0 mm High 30
14 Feb 33.1 °C 47 % 34 km/h 0.0 mm High 27
15 Feb 34.8 °C 38 % 32 km/h 0.0 mm High 29
16 Feb 33.5 °C 38 % 44 km/h 0.0 mm High 31
17 Feb 34.7 °C 30 % 29 km/h 0.0 mm High 32
18 Feb after 34.8 °C 38 % 19 km/h 0.0 mm High 28
19 Feb after 34.9 °C 39 % 17 km/h 0.0 mm High 28
20 Feb after 34.6 °C 41 % 19 km/h 0.0 mm High 30
21 Feb after 35.0 °C 41 % 25 km/h 0.0 mm High 31
22 Feb after 34.8 °C 39 % 25 km/h 0.0 mm High 28
23 Feb after 36.1 °C 30 % 30 km/h 0.0 mm High 36
24 Feb after 35.0 °C 35 % 34 km/h 0.0 mm High 36
25 Feb after 33.6 °C 39 % 48 km/h 0.0 mm High 37
26 Feb after 33.2 °C 39 % 42 km/h 0.0 mm Very high 38
27 Feb after 32.5 °C 53 % 47 km/h 0.5 mm High 31

Its twins: fires that started in the same weather

It started with an FWI of 23.3, a minimum humidity of 43% and 42 days without rain. Fires in the area that started in weather like this since 2016: 33.

FWI at the start 23.3
Minimum humidity 43 %
Days without rain 42
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Sambour fire, December 2019
2,624 ha 23 days FWI 20.6 Min. humidity 43 % 118 km away, in 2019

First rain (1 mm or more) after it ended: none in the following ten days.

What happened to them

22 days
median duration
2,723 ha
median area
100 %
went past 1,000 ha
1.3 mm
rain at the end (median; 8 of 33 had it)

It burned an area similar to its twins (2,495 ha against a median of 2,723 ha) and lasted 14 days, against 22 days.

In 25 of 33, 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 1.3 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

—first rain
—no rain in ten days
59km/h · max. gust

It was considered over on 17 Feb, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 8 of 33, with a median of 1.3 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.

How we calculate it

Before and after, from space

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

Before · 28 Jan 2024
After · 24 Feb 2024

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 7 February 2024 the air beside the fire reached 63 µg/m³ of PM2.5. That day averaged 44: 2.9 times the WHO daily guideline (15).

PM2.5 peak63 µg/m³
Days over the guideline3 days
PM1092 µg/m³
Optical depth1.06
6 Feb8 Feb10 Feb12 Feb14 Feb
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 · 50Every 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 Kaoh Nheaek fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 4 February 2024 to 17 February 2024 (14 days). The perimeter dates it from 8 February 2024 to 12 February 2024.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 2,495 hectares (25.0 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Kaoh Nheaek (1,509 ha, 0.3 %); Pech Chreada (1,000 ha, 0.3 %).
What was the weather like?
During the fire the temperature reached 35.0 °C, humidity dropped to 30 % and gusts hit 59 km/h. The fire danger index (FWI) reached 35, class High.
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.
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: 33. Their median duration was 22 days and their median area 2,723 ha; 100 % went past 1,000 ha. In 25 of 33, 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 1.3 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.

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: 12 February 2024 → 17 February 2024.
  2. Start date: 8 February 2024 → 4 February 2024.

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
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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 8 February 2024 to 12 February 2024. 50 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.

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.