Long fire, April 2024 Long
The fire started on 16 April 2024 in Long, Laos, and satellites saw it burning for 4 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 2,073 hectares from heat detections, spread across a single municipality.
It is the 32th largest in Luang Namtha since 2016 (of 36 with a page). Number 101 in Laos in 2024, of 109.
- Burnt area
- 2,073ha
- GWIS perimeter (Copernicus)
- Duration
- 4days
- 16 Apr 2024 – 19 Apr 2024
- Municipalities hit
- 1
- districts
- Started on
- 16 Apr
- 2024
- Heat detections
- 46
- in a single hotspot: 153 MW
- Energy released
- 1.9GW
- sum of detected power
Where it burned
How it evolved, day by day
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
This area had burned before
68% of the perimeter overlaps earlier fires recorded since 2016: 1,052 ha in 2016, 254 ha in 2017, 345 ha in 2019, 296 ha in 2020. Part of it burned more than once, so the yearly figures add up to more than the 1,415 ha that had burned before.
- 1,052 ha Long fire, May 2016 3,077 ha in total; the hectares shown are those it shares with this fire
- 296 ha Long fire, March 2020 21,385 ha in total; the hectares shown are those it shares with this fire
- 254 ha Long fire, May 2017 2,047 ha in total; the hectares shown are those it shares with this fire
What happened to each town
-
Long where it started2,081 ha reached on 16 Apr0.8 %
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.
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
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 April 2024 the air beside the fire reached 139 µg/m³ of PM2.5. That day averaged 77: 5.1 times the WHO daily guideline (15).
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 · 46Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
Frequently asked questions
- How long did the Long fire last?
- GWIS (Copernicus) dates it between 16 April 2024 and 19 April 2024: 4 days between the first and last heat detection of the perimeter.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 2,073 hectares (20.7 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Long (2,081 ha, 0.8 %).
- 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.
Report an error
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.