Nalae fire, March 2020 Nalae, Namor, Xay
The fire started on 28 March 2020 in Nalae, Laos, and satellites saw it burning for 6 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 2,098 hectares from heat detections, spread across 3 municipalities.
It is the 35th largest in Luang Namtha since 2016 (of 40 with a page). Number 161 in Laos in 2020, of 188.
- Burnt area
- 2,098ha
- GWIS perimeter (Copernicus)
- Duration
- 6days
- 28 Mar 2020 – 2 Apr 2020
- Municipalities hit
- 3
- districts
- Started on
- 28 Mar
- 2020
- Heat detections
- 65
- in a single hotspot: 255 MW
- Average daily power
- 447MW
- detected power per day, on average
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
85% of the perimeter overlaps earlier fires recorded since 2016: 412 ha in 2016, 1,373 ha in 2017, 81 ha in 2018. Part of it burned more than once, so the yearly figures add up to more than the 1,777 ha that had burned before.
What happened to each town
-
Nalae where it started1,138 ha0.7 %
-
948 ha0.5 %
-
21 ha0.0 %
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.
Detections table · 65Every 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 Nalae fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 28 March 2020 to 2 April 2020 (6 days). The perimeter dates it from 28 March 2020 to 1 April 2020.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 2,098 hectares (21.0 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 3 municipalities: Nalae (1,138 ha, 0.7 %); Namor (948 ha, 0.5 %); Xay (21 ha, 0.0 %).
- 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.