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Pakbeng fire, 25 March 2024 Pakbeng, Hoon

Out · last detection 16 Apr 2024, 05:34 UTC

The fire started on 25 March 2024 in Pakbeng, Laos, and satellites saw it burning for 23 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 5,225 hectares from heat detections, spread across 2 municipalities.

It is the 53th largest in Oudomxay since 2016 (of 241 with a page). Number 12 in Laos in 2024, of 109.

Burnt area
5,225ha
GWIS perimeter (Copernicus)
Duration
23days
25 Mar 2024 – 16 Apr 2024
Municipalities hit
2
districts
Started on
25 Mar
2024
Heat detections
201
in a single hotspot: 128 MW
Danger at start
23
High · FWI index
Energy released
4.4GW
sum of detected power

Where it burned

16 Apr 2024
HOTSPOTS BY DAY 25 Mar16 Apr

How it evolved, day by day

2528293031123456789131416

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

The weather it burned in

40°high
48km/h · peak gust
24%lowest humidity

It had gone 2 days without rain (1 mm or more) when it started.

This area had burned before

99% of the perimeter overlaps earlier fires recorded since 2016: 1,714 ha in 2016, 1,457 ha in 2017, 1,640 ha in 2018, 3,048 ha in 2019, 1,836 ha in 2020, 1,000 ha in 2021, 2,409 ha in 2022, 3,946 ha in 2023. Part of it burned more than once, so the yearly figures add up to more than the 5,173 ha that had burned before.

What happened to each town

  1. Pakbeng where it started
    4,802 ha reached on 25 Mar
    3.8 %
  2. 448 ha reached on 28 Mar
    0.2 %

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)
25 Mar 37.0 °C 24 % 27 km/h 0.0 mm High 23
26 Mar 36.9 °C 26 % 27 km/h 0.0 mm High 24
27 Mar 36.3 °C 37 % 40 km/h 0.1 mm High 24
28 Mar 35.4 °C 31 % 30 km/h 0.0 mm High 24
29 Mar 35.1 °C 32 % 48 km/h 0.0 mm High 28
30 Mar 37.0 °C 27 % 46 km/h 0.0 mm High 29
31 Mar 37.5 °C 30 % 44 km/h 0.0 mm High 29
1 Apr 38.1 °C 24 % 45 km/h 0.0 mm High 32
2 Apr 38.1 °C 26 % 45 km/h 0.0 mm High 33
3 Apr 38.6 °C 28 % 42 km/h 0.0 mm High 34
4 Apr 39.4 °C 29 % 37 km/h 0.0 mm High 34
5 Apr 39.0 °C 29 % 38 km/h 0.0 mm High 34
6 Apr 39.5 °C 33 % 35 km/h 0.0 mm High 34
7 Apr 39.3 °C 34 % 36 km/h 0.1 mm High 34
8 Apr 39.0 °C 38 % 26 km/h 0.0 mm High 30
9 Apr 39.1 °C 38 % 34 km/h 1.5 mm Moderate 21
10 Apr 33.2 °C 52 % 27 km/h 1.0 mm Moderate 14
11 Apr 37.9 °C 37 % 26 km/h 0.0 mm High 24
12 Apr 37.0 °C 42 % 28 km/h 0.0 mm High 24
13 Apr 38.9 °C 31 % 34 km/h 0.0 mm High 31
14 Apr 38.2 °C 35 % 35 km/h 0.0 mm High 32
15 Apr 38.2 °C 35 % 34 km/h 1.1 mm High 25
16 Apr 36.7 °C 40 % 37 km/h 0.0 mm High 26
17 Apr after 37.2 °C 37 % 36 km/h 0.0 mm High 29
18 Apr after 35.7 °C 40 % 39 km/h 0.0 mm High 28
19 Apr after 37.1 °C 37 % 44 km/h 0.2 mm High 31
20 Apr after 36.4 °C 41 % 47 km/h 0.1 mm High 32
21 Apr after 37.7 °C 31 % 41 km/h 0.0 mm High 34
22 Apr after 39.6 °C 29 % 41 km/h 0.0 mm High 37
23 Apr after 39.2 °C 35 % 28 km/h 0.0 mm High 34
24 Apr after 38.1 °C 39 % 44 km/h 0.2 mm High 36
25 Apr after 36.9 °C 39 % 38 km/h 0.2 mm High 33
26 Apr after 36.6 °C 38 % 43 km/h 0.2 mm High 36

Before and after, from space

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

Before · 18 Mar 2024
After · 23 Apr 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 8 April 2024 the air beside the fire reached 124 µg/m³ of PM2.5. That day averaged 72: 4.8 times the WHO daily guideline (15).

PM2.5 peak124 µg/m³
Days over the guideline26 days
PM10182 µg/m³
Optical depth2.46
23242526272829303112345678910111213141516171819
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 · 201Every 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 Laos ›

Frequently asked questions

How long did the Pakbeng fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 25 March 2024 to 16 April 2024 (23 days). The perimeter dates it from 30 March 2024 to 9 April 2024.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 5,225 hectares (52.2 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Pakbeng (4,802 ha, 3.8 %); Hoon (448 ha, 0.2 %).
What was the weather like?
During the fire the temperature reached 39.5 °C, humidity dropped to 24 % and gusts hit 48 km/h. The fire danger index (FWI) reached 34, class High.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Laos (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

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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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 3.0 Intergovernmental Organisations (CC BY 3.0 IGO)). 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.