Burned area
satellite only3,761ha
Perimeter published by GWIS (Copernicus).
- Source
- GWIS (Copernicus)
- Date
- 14 Jan 2024 – 4 Feb 2024
+− cross-check
No official record is matched to this page to compare it with.
KH · Cambodia · –
Koun Mom fire, 14 January 2024 Koun Mom, Kaoh Nheaek, Sesan
Out · last detection 4 Feb 2024, 06:22 UTC
The fire started on 14 January 2024 in Koun Mom, Cambodia, and satellites saw it burning for 22 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,761 hectares from heat detections, spread across 3 municipalities.
It is the 13th largest in Ratanakiri since 2016 (of 62 with a page). Number 15 in Cambodia in 2024, of 41.
Use this data
Compare with…
Use this data
Fire page data · version 2026-10-27matches 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 only22days
14 Jan 2024 to 4 Feb 2024: first and last day with fire on the page.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 4 Feb 2024, 06:22 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 only14 Jan 2024
First day with fire seen by the satellites or the perimeter.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 14 Jan 2024
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only158
VIIRS detections at 375 m. Most intense hotspot: 38 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 14 Jan 2024 – 4 Feb 2024
+− 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 only196MW
Total radiative power on 25 January 2024; hotspots that day: 30.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 25 Jan 2024
+− 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
model34.6FWI · high
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 48.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 14 Jan 2024, 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
model35.8°C · 38% RH
High of 35.8 °C and minimum humidity of 38% on 3 February 2024; gusts of 62 km/h on 24 January 2024.
- Source
- weather model at the fire’s grid cell
- Date
- 14 Jan 2024 – 4 Feb 2024
- 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
-
logLast day with fire: 28 January 2024 → 4 February 2024.
-
logStart date: 21 January 2024 → 14 January 2024.
-
· reconstructed GHSLPopulation and built-up area computed
What was saved on 27 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
- 3,761 ha
- Dates
- 14 Jan 2024 – 4 Feb 2024
- Name
- Koun Mom
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/koun-mom-2024-01-2?v=2026-10-27A 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 koun-mom-2024-01-2.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024-01-14 | 3 | 5 | 32.6 | 21.4 | 37 | 18.9 | 42.8 | 0 | 34.6 | alto | 1 |
| 2024-01-15 | 6 | 24 | 33.3 | 21.4 | 36 | 18.1 | 43.2 | 0 | 34.3 | alto | 1 |
| 2024-01-16 | 3 | 54 | 33.1 | 21.3 | 36 | 19.1 | 43.2 | 0 | 35.5 | alto | 1 |
| 2024-01-17 | 0 | 0 | 34.3 | 21.8 | 37 | 18.3 | 43.9 | 0 | 35.1 | alto | 1 |
| 2024-01-18 | 2 | 8 | 34.7 | 22.2 | 34 | 14.8 | 34.9 | 0 | 32.5 | alto | 1 |
| 2024-01-19 | 1 | 3 | 34.6 | 22.8 | 33 | 13.3 | 31 | 0 | 31.6 | alto | 1 |
| 2024-01-20 | 0 | 0 | 34 | 22.4 | 37 | 12.7 | 31 | 0 | 31.4 | alto | 1 |
| 2024-01-21 | 11 | 65 | 34.5 | 23.1 | 37 | 14.9 | 36.4 | 0 | 33.4 | alto | 1 |
| 2024-01-22 | 2 | 8 | 34.2 | 22.4 | 36 | 16.6 | 39.6 | 0 | 35.1 | alto | 1 |
| 2024-01-23 | 3 | 39 | 34.1 | 23.5 | 34 | 22 | 47.5 | 0 | 40.3 | muy_alto | 1 |
| 2024-01-24 | 23 | 110 | 32 | 23 | 40 | 27.5 | 61.6 | 0 | 44.5 | muy_alto | 1 |
| 2024-01-25 | 30 | 196 | 32.9 | 21.9 | 37 | 27.5 | 58.7 | 0 | 44.8 | muy_alto | 1 |
| 2024-01-26 | 28 | 50 | 33.4 | 21.7 | 35 | 22.1 | 54.7 | 0 | 39.8 | muy_alto | 1 |
| 2024-01-27 | 22 | 102 | 33.2 | 21.2 | 34 | 19.6 | 46.8 | 0 | 37.7 | alto | 1 |
| 2024-01-28 | 9 | 60 | 32.5 | 21.1 | 35 | 21.2 | 48.6 | 0 | 39.5 | muy_alto | 1 |
| 2024-01-29 | 1 | 11 | 33.9 | 21.5 | 32 | 19.1 | 44.3 | 0 | 37.8 | alto | 1 |
| 2024-01-30 | 9 | 46 | 34.7 | 21.1 | 33 | 15.5 | 34.9 | 0 | 34.9 | alto | 1 |
| 2024-01-31 | 1 | 1 | 35.2 | 22 | 35 | 12 | 29.5 | 0 | 32.2 | alto | 1 |
| 2024-02-01 | 0 | 0 | 34.9 | 22.5 | 39 | 11.2 | 25.2 | 0 | 31.8 | alto | 1 |
| 2024-02-02 | 0 | 0 | 34.6 | 24 | 48 | 7.9 | 17.3 | 0 | 26.1 | alto | 1 |
| 2024-02-03 | 1 | 3 | 35.8 | 24.1 | 38 | 8.1 | 19.8 | 0 | 26.7 | alto | 1 |
| 2024-02-04 | 3 | 38 | 34.1 | 24.1 | 47 | 7.8 | 20.9 | 0 | 26 | alto | 1 |
| 2024-02-05 | 0 | 0 | 35.4 | 24.4 | 44 | 6.9 | 19.8 | 0.3 | 25.5 | alto | 0 |
| 2024-02-06 | 0 | 0 | 35.1 | 25.3 | 47 | 9.4 | 19.1 | 0.7 | 22.2 | alto | 0 |
| 2024-02-07 | 0 | 0 | 33.5 | 24.4 | 56 | 8.6 | 23.8 | 1.4 | 12.3 | 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), GHSL (JRC). Open-Meteo.com · How we build fire pages: methodology
- Burnt area
- 3,761ha
- GWIS perimeter (Copernicus)
- Duration
- 22days
- 14 Jan 2024 – 4 Feb 2024
- Municipalities hit
- 3
- districts
- Started on
- 14 Jan
- 2024
- Heat detections
- 158
- in a single hotspot: 38 MW
- Danger at start
- 35
- High · FWI index
- Average daily power
- 46MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
14 Jan4 Feb
4 Feb 2024
How it evolved, day by day
14 Jan
19 Jan
25 Jan
28 Jan
3 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
36°high
62km/h · peak gust
32%lowest humidity
It had gone 48 days without rain (1 mm or more) when it started. Rain came after the fire: 1.4 mm on 7 Feb.
This area had burned before
92% of the perimeter overlaps earlier fires recorded since 2016: 2,367 ha in 2016, 1,169 ha in 2017, 1,664 ha in 2020, 1,804 ha in 2021, 510 ha in 2022. Part of it burned more than once, so the yearly figures add up to more than the 3,478 ha that had burned before.
- 2,367 ha Kaoh Nheaek fire, January 2016 7,541 ha in total; the hectares shown are those it shares with this fire
- 1,802 ha Kaoh Nheaek fire, January 2021 6,234 ha in total; the hectares shown are those it shares with this fire
- 510 ha Koun Mom fire, February 2022 3,546 ha in total; the hectares shown are those it shares with this fire
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
-
Koun Mom where it started1,731 ha reached on 21 Jan0.8 %
-
1,116 ha reached on 14 Jan0.2 %
-
935 ha reached on 14 Jan0.3 %
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 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) |
|---|---|---|---|---|---|
| 14 Jan | 32.6 °C | 37 % | 43 km/h | 0.0 mm | High 35 |
| 15 Jan | 33.3 °C | 36 % | 43 km/h | 0.0 mm | High 34 |
| 16 Jan | 33.1 °C | 36 % | 43 km/h | 0.0 mm | High 36 |
| 17 Jan | 34.3 °C | 37 % | 44 km/h | 0.0 mm | High 35 |
| 18 Jan | 34.7 °C | 34 % | 35 km/h | 0.0 mm | High 32 |
| 19 Jan | 34.6 °C | 33 % | 31 km/h | 0.0 mm | High 32 |
| 20 Jan | 34.0 °C | 37 % | 31 km/h | 0.0 mm | High 31 |
| 21 Jan | 34.5 °C | 37 % | 36 km/h | 0.0 mm | High 33 |
| 22 Jan | 34.2 °C | 36 % | 40 km/h | 0.0 mm | High 35 |
| 23 Jan | 34.1 °C | 34 % | 48 km/h | 0.0 mm | Very high 40 |
| 24 Jan | 32.0 °C | 40 % | 62 km/h | 0.0 mm | Very high 44 |
| 25 Jan | 32.9 °C | 37 % | 59 km/h | 0.0 mm | Very high 45 |
| 26 Jan | 33.4 °C | 35 % | 55 km/h | 0.0 mm | Very high 40 |
| 27 Jan | 33.2 °C | 34 % | 47 km/h | 0.0 mm | High 38 |
| 28 Jan | 32.5 °C | 35 % | 49 km/h | 0.0 mm | Very high 40 |
| 29 Jan | 33.9 °C | 32 % | 44 km/h | 0.0 mm | High 38 |
| 30 Jan | 34.7 °C | 33 % | 35 km/h | 0.0 mm | High 35 |
| 31 Jan | 35.2 °C | 35 % | 30 km/h | 0.0 mm | High 32 |
| 1 Feb | 34.9 °C | 39 % | 25 km/h | 0.0 mm | High 32 |
| 2 Feb | 34.6 °C | 48 % | 17 km/h | 0.0 mm | High 26 |
| 3 Feb | 35.8 °C | 38 % | 20 km/h | 0.0 mm | High 27 |
| 4 Feb | 34.1 °C | 47 % | 21 km/h | 0.0 mm | High 26 |
| 5 Feb after | 35.4 °C | 44 % | 20 km/h | 0.3 mm | High 26 |
| 6 Feb after | 35.1 °C | 47 % | 19 km/h | 0.7 mm | High 22 |
| 7 Feb after | 33.5 °C | 56 % | 24 km/h | 1.4 mm | Moderate 12 |
Its twins: fires that started in the same weather
It started with an FWI of 34.6, a minimum humidity of 37% and 48 days without rain. Fires in the area that started in weather like this since 2016: 30.
FWI at the start
34.6
Minimum humidity
37 %
Days without rain
48
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Koun Mom fire, 14 January 2024
3,761 ha
22 days
FWI 34.6
Min. humidity 37 %
Lumphat fire, January 2020
2,061 ha
24 days
FWI 32.7
Min. humidity 35 %
54 km away, in 2020
First rain (1 mm or more) after it ended: none in the following ten days.
Kaoh Nheaek fire, December 2023
2,081 ha
11 days
FWI 30.9
Min. humidity 38 %
55 km away, in 2023
First rain (1 mm or more) after it ended: none in the following ten days.
Thala Barivat fire, February 2021
5,694 ha
27 days
FWI 31.1
Min. humidity 37 %
98 km away, in 2021
First rain (1 mm or more) after it ended: none in the following ten days.
Sambour fire, February 2020
6,907 ha
33 days
FWI 35.1
Min. humidity 39 %
28 km away, in 2020
First rain (1 mm or more) after it ended: none in the following ten days.
Koun Mom fire, February 2024
2,798 ha
41 days
FWI 35.1
Min. humidity 35 %
47 km away, in 2024
First rain (1 mm or more) after it ended: 2.6 mm on 28 Mar.
What happened to them
- 18 days
- median duration
- 2,423 ha
- median area
- 100 %
- went past 1,000 ha
- 2.2 mm
- rain at the end (median; 10 of 30 had it)
It was 1.6 times larger than the median of its twins and lasted 22 days, against 18 days.
Only 9 of its 30 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 20 of 30, 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 2.2 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
1.4 mmfirst rain
7 Feb3 days after it ended
62km/h · max. gust
It was considered over on 4 Feb, and on 7 Feb 1.4 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 10 of 30, with a median of 2.2 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 · 7 Jan 2024
After · 11 Feb 2024
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 19 January 2024 the air beside the fire reached 41 µg/m³ of PM2.5. That day averaged 16: 1.1 times the WHO daily guideline (15).
PM2.5 peak41 µg/m³
Days over the guideline1 day
PM1058 µg/m³
Optical depth0.62
WHO 15
19 Jan22 Jan25 Jan28 Jan31 Jan
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 · 158Every 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
Frequently asked questions
- How long did the Koun Mom fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 14 January 2024 to 4 February 2024 (22 days). The perimeter dates it from 21 January 2024 to 28 January 2024.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 3,761 hectares (37.6 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 3 municipalities: Koun Mom (1,731 ha, 0.8 %); Kaoh Nheaek (1,116 ha, 0.2 %); Sesan (935 ha, 0.3 %).
- What was the weather like?
- During the fire the temperature reached 35.8 °C, humidity dropped to 32 % and gusts hit 62 km/h. The fire danger index (FWI) reached 45, class Very 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: 30. Their median duration was 18 days and their median area 2,423 ha; 100 % went past 1,000 ha. Only 9 of its 30 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 20 of 30, 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 2.2 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.
- Last day with fire: 28 January 2024 → 4 February 2024.
- Start date: 21 January 2024 → 14 January 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
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 21 January 2024 to 28 January 2024. 158 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 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.