Xiengkhor fire, 30 April 2017 Xiengkhor
The fire started on 30 April 2017 in Xiengkhor, Laos, and satellites saw it burning for 5 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 5,595 hectares from heat detections, spread across a single municipality.
It is the 16th largest in Houaphan since 2016 (of 131 with a page). Number 14 in Laos in 2017, of 118.
- Burnt area
- 5,595ha
- GWIS perimeter (Copernicus)
- Duration
- 5days
- 30 Apr 2017 – 4 May 2017
- Municipalities hit
- 1
- districts
- Started on
- 30 Apr
- 2017
- Heat detections
- 145
- in a single hotspot: 189 MW
- Danger at start
- 5
- Low · FWI index
- Average daily power
- 831MW
- 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.
The weather it burned in
It had gone one day without rain (1 mm or more) when it started. Rain came after the fire: 2.2 mm on 5 May.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
What happened to each town
-
Xiengkhor where it started5,624 ha7.0 %
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.
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) |
|---|---|---|---|---|---|
| 30 Apr | 31.1 °C | 48 % | 37 km/h | 0.0 mm | Low 5 |
| 1 May | 33.5 °C | 39 % | 43 km/h | 0.3 mm | Moderate 11 |
| 2 May | 34.3 °C | 34 % | 43 km/h | 0.0 mm | Moderate 15 |
| 3 May | 32.9 °C | 44 % | 53 km/h | 0.0 mm | Moderate 16 |
| 4 May | 31.4 °C | 52 % | 39 km/h | 0.3 mm | Moderate 12 |
| 5 May after | 30.5 °C | 58 % | 28 km/h | 2.2 mm | Very low 3 |
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 · 145Every 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 Xiengkhor fire last?
- GWIS (Copernicus) dates it between 30 April 2017 and 4 May 2017: 5 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 5,595 hectares (56.0 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Xiengkhor (5,624 ha, 7.0 %).
- What was the weather like?
- During the fire the temperature reached 34.3 °C, humidity dropped to 34 % and gusts hit 53 km/h. The fire danger index (FWI) reached 16, class Moderate.
- 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
How we know this
- Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery.
- Dates from the perimeter: the VIIRS detections inside it did not change them. 145 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.
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.