How long did the Ngeun fire last?

According to the heat detections seen by satellite inside the perimeter, it burned from 10 March 2019 to 3 April 2019 (25 days). The perimeter dates it from 16 March 2019 to 27 March 2019.

How much area did it burn?

The perimeter GWIS (Copernicus) rebuilt from heat detections is 5,085 hectares (50.8 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire entered 2 municipalities: Ngeun (5,041 ha, 6.8 %); Xienghone (71 ha, 0.1 %).

What was the weather like?

During the fire the temperature reached 36.9 °C, humidity dropped to 22 % and gusts hit 43 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.

LA · Laos · 2019-03-10 → 2019-04-03

Ngeun fire, 10 March 2019 Ngeun, Xienghone

Out · last detection 4 Apr 2019, 06:55 UTC

The fire started on 10 March 2019 in Ngeun, Laos, and satellites saw it burning for 25 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 5,085 hectares from heat detections, spread across 2 municipalities.

It is the 38th largest in Xaignabouli since 2016 (of 160 with a page). Number 22 in Laos in 2019, of 126.

Compare with…

Suggestions: Ngeun · 2023 Khop · 2023 Paktha · 2019 Xienghone · 2026

Burnt area: 5,085ha; GWIS perimeter (Copernicus)
Duration: 25days; 10 Mar 2019 – 3 Apr 2019
Municipalities hit: 2; districts
Started on: 10 Mar; 2019
Heat detections: 264; in a single hotspot: 423 MW
Danger at start: 31; High · FWI index
Average daily power: 369MW; detected power per day, on average

HOTSPOTS BY DAY 10 Mar3 Apr

Play back 4 Apr 2019

How it evolved, day by day

10 Mar 16 Mar 20 Mar 24 Mar 28 Mar 1 Apr

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

The weather it burned in

37°high

43km/h · peak gust

22%lowest humidity

It had gone 11 days without rain (1 mm or more) when it started.

This area had burned before

50% of the perimeter overlaps earlier fires recorded since 2016: 973 ha in 2016, 29 ha in 2017, 1,759 ha in 2018. Part of it burned more than once, so the yearly figures add up to more than the 2,535 ha that had burned before.

How big is it?

It burned the equivalent of 3.2% of the area of London (51 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

Ngeun where it started

5,041 ha reached on 10 Mar

6.8 %
Xienghone

71 ha reached on 15 Mar

0.1 %

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 2020

Built-up area0.37 ha

Residents≈ 150

Inside the perimeter there were about 0.37 hectares of built-up land and about 150 residents (GHSL 2020, 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.

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)
12 Mar	34.3 °C	26 %	32 km/h	0.0 mm	High 31
13 Mar	34.4 °C	31 %	34 km/h	0.0 mm	High 32
14 Mar	34.7 °C	32 %	29 km/h	0.0 mm	High 31
15 Mar	34.5 °C	33 %	32 km/h	0.0 mm	High 30
16 Mar	34.6 °C	41 %	39 km/h	0.0 mm	High 29
17 Mar	35.0 °C	42 %	35 km/h	0.0 mm	High 28
18 Mar	34.9 °C	41 %	33 km/h	0.1 mm	High 29
19 Mar	34.0 °C	42 %	42 km/h	1.4 mm	Moderate 19
20 Mar	35.9 °C	30 %	43 km/h	0.0 mm	High 32
21 Mar	36.2 °C	26 %	32 km/h	0.0 mm	High 33
22 Mar	35.7 °C	27 %	28 km/h	0.0 mm	High 32
23 Mar	36.9 °C	22 %	23 km/h	0.0 mm	High 34
24 Mar	33.4 °C	41 %	38 km/h	0.6 mm	High 29
25 Mar	35.2 °C	45 %	34 km/h	0.1 mm	High 28
26 Mar	36.2 °C	42 %	31 km/h	0.0 mm	High 27
27 Mar	35.2 °C	44 %	36 km/h	1.1 mm	Moderate 20
28 Mar	34.9 °C	34 %	35 km/h	0.0 mm	High 29
29 Mar	35.3 °C	27 %	29 km/h	3.2 mm	Moderate 15
30 Mar	35.4 °C	33 %	31 km/h	0.0 mm	High 25
31 Mar	36.0 °C	36 %	36 km/h	0.0 mm	High 26
1 Apr	36.4 °C	31 %	31 km/h	0.0 mm	High 29
2 Apr	35.5 °C	38 %	34 km/h	0.1 mm	High 29
3 Apr	35.0 °C	41 %	36 km/h	0.4 mm	High 29
4 Apr after	36.5 °C	34 %	30 km/h	0.0 mm	High 27
5 Apr after	35.3 °C	38 %	34 km/h	0.2 mm	High 29
6 Apr after	35.5 °C	40 %	34 km/h	0.1 mm	High 30
7 Apr after	36.3 °C	35 %	37 km/h	0.0 mm	High 31
8 Apr after	37.7 °C	27 %	40 km/h	0.0 mm	High 36
9 Apr after	37.7 °C	29 %	36 km/h	0.0 mm	High 35
10 Apr after	37.8 °C	29 %	37 km/h	0.0 mm	High 36
11 Apr after	38.2 °C	26 %	35 km/h	0.0 mm	High 37
12 Apr after	38.2 °C	31 %	34 km/h	0.0 mm	High 37
13 Apr after	38.5 °C	30 %	36 km/h	0.0 mm	High 37

Before and after, from space

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

↔

Before · 3 Mar 2019

After · 10 Apr 2019

Before After

If the day is cloudy, change the date: each satellite passes once a day. In false colour the burnt ground looks brown or red.

Detections table · 264Every 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

All fires in Laos ›

Frequently asked questions

How long did the Ngeun fire last?: According to the heat detections seen by satellite inside the perimeter, it burned from 10 March 2019 to 3 April 2019 (25 days). The perimeter dates it from 16 March 2019 to 27 March 2019.
How much area did it burn?: The perimeter GWIS (Copernicus) rebuilt from heat detections is 5,085 hectares (50.8 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire entered 2 municipalities: Ngeun (5,041 ha, 6.8 %); Xienghone (71 ha, 0.1 %).
What was the weather like?: During the fire the temperature reached 36.9 °C, humidity dropped to 22 % and gusts hit 43 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

NASA FIRMS ↗
GWIS · Copernicus ↗

History of this page · 1 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.

27 October 2026 Start date: 12 March 2019 → 10 March 2019.

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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What do you think is wrong?

Dates or duration Place or towns Burned area Name It was not a wildfire Same fire as another page Something else

What really happened?

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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 16 March 2019 to 27 March 2019. 264 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 2020, 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 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.

Where it burned