Sangthong fire, March 2019 Sangthong, Meun
The fire started on 30 March 2019 in Sangthong, Laos, and satellites saw it burning for 5 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,348 hectares from heat detections, spread across 2 municipalities.
It is the 9th largest in Vientiane Capital since 2016 (of 14 with a page). Number 44 in Laos in 2019, of 126.
- Burnt area
- 3,348ha
- GWIS perimeter (Copernicus)
- Duration
- 5days
- 30 Mar 2019 – 3 Apr 2019
- Municipalities hit
- 2
- districts
- Started on
- 30 Mar
- 2019
- Heat detections
- 95
- in a single hotspot: 183 MW
- Danger at start
- 16
- Moderate · FWI index
- Average daily power
- 581MW
- 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: 3.6 mm on 4 Apr.
This area had burned before
79% of the perimeter overlaps earlier fires recorded since 2016: 2,272 ha in 2016, 1,373 ha in 2017, 2,137 ha in 2018. Part of it burned more than once, so the yearly figures add up to more than the 2,661 ha that had burned before.
What happened to each town
-
Sangthong where it started2,827 ha4.0 %
-
541 ha0.5 %
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 Mar | 37.1 °C | 33 % | 16 km/h | 0.0 mm | Moderate 16 |
| 31 Mar | 37.7 °C | 38 % | 20 km/h | 0.0 mm | Moderate 19 |
| 1 Apr | 35.5 °C | 48 % | 26 km/h | 3.1 mm | Low 6 |
| 2 Apr | 34.2 °C | 53 % | 24 km/h | 2.4 mm | Very low 4 |
| 3 Apr | 33.6 °C | 54 % | 20 km/h | 4.5 mm | Very low 1 |
| 4 Apr after | 33.6 °C | 60 % | 25 km/h | 3.6 mm | Very low 1 |
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 · 95Every 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 Sangthong fire last?
- GWIS (Copernicus) dates it between 30 March 2019 and 3 April 2019: 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 3,348 hectares (33.5 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Sangthong (2,827 ha, 4.0 %); Meun (541 ha, 0.5 %).
- What was the weather like?
- During the fire the temperature reached 37.7 °C, humidity dropped to 33 % and gusts hit 26 km/h. The fire danger index (FWI) reached 19, 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
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.