Xay fire, March 2019 Xay
The fire started on 13 March 2019 in Xay, Laos, and satellites saw it burning for 19 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 2,499 hectares from heat detections, spread across a single municipality.
It is the 171th largest in Oudomxay since 2016 (of 241 with a page). Number 76 in Laos in 2019, of 117.
- Burnt area
- 2,499ha
- GWIS perimeter (Copernicus)
- Duration
- 19days
- 13 Mar 2019 – 31 Mar 2019
- Municipalities hit
- 1
- districts
- Started on
- 13 Mar
- 2019
- Heat detections
- 163
- in a single hotspot: 184 MW
- Energy released
- 3.7GW
- 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
88% of the perimeter overlaps earlier fires recorded since 2016: 1,033 ha in 2016, 671 ha in 2017, 2,059 ha in 2018. Part of it burned more than once, so the yearly figures add up to more than the 2,210 ha that had burned before.
- 2,059 ha Xay fire, April 2018 31,315 ha in total; the hectares shown are those it shares with this fire
- 729 ha Xay fire, April 2016 23,891 ha in total; the hectares shown are those it shares with this fire
- 621 ha Xay fire, April 2017 2,837 ha in total; the hectares shown are those it shares with this fire
- 304 ha Xay fire, April 2016 4,640 ha in total; the hectares shown are those it shares with this fire
What happened to each town
-
Xay where it started2,510 ha reached on 13 Mar1.2 %
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.
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 · 163Every 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 Xay fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 13 March 2019 to 31 March 2019 (19 days). The perimeter dates it from 20 March 2019 to 26 March 2019.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 2,499 hectares (25.0 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Xay (2,510 ha, 1.2 %).
- 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.