Khlong Lan fire, 1 April 2019 Khlong Lan
The fire started on 1 April 2019 in Khlong Lan, Thailand, and satellites saw it burning for 5 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 1,105 hectares from heat detections, spread across a single municipality.
It is the 58th largest in Kamphaeng Phet Province since 2016 (of 66 with a page). Number 426 in Thailand in 2019, of 503.
The power measured by the satellite is low (9.0 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.
- Burnt area
- 1,105ha
- GWIS perimeter (Copernicus)
- Duration
- 5days
- 1 Apr 2019 – 5 Apr 2019
- Municipalities hit
- 1
- districts
- Started on
- 1 Apr
- 2019
- Heat detections
- 29
- in a single hotspot: 9 MW
- Danger at start
- 21
- Moderate · FWI index
- Energy released
- 80MW
- 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.
The weather it burned in
It had gone 3 days without rain (1 mm or more) when it started. Rain came after the fire: 2.4 mm on 15 Apr.
This area had burned before
100% of the perimeter overlaps earlier fires recorded since 2016: 1,103 ha in 2016.
What happened to each town
-
Khlong Lan where it started1,110 ha reached on 1 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.
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) |
|---|---|---|---|---|---|
| 1 Apr | 32.1 °C | 37 % | 31 km/h | 0.0 mm | Moderate 21 |
| 2 Apr | 30.7 °C | 50 % | 28 km/h | 0.1 mm | Moderate 16 |
| 3 Apr | 31.9 °C | 42 % | 23 km/h | 0.0 mm | Moderate 17 |
| 4 Apr | 32.7 °C | 33 % | 29 km/h | 0.0 mm | Moderate 20 |
| 5 Apr | 32.6 °C | 41 % | 22 km/h | 0.0 mm | Moderate 20 |
| 6 Apr after | 30.8 °C | 49 % | 30 km/h | 0.1 mm | Moderate 18 |
| 7 Apr after | 32.8 °C | 37 % | 27 km/h | 0.8 mm | Moderate 17 |
| 8 Apr after | 34.3 °C | 33 % | 25 km/h | 0.2 mm | High 22 |
| 9 Apr after | 34.2 °C | 33 % | 30 km/h | 0.0 mm | High 23 |
| 10 Apr after | 34.0 °C | 34 % | 31 km/h | 0.0 mm | High 23 |
| 11 Apr after | 35.5 °C | 31 % | 30 km/h | 0.0 mm | High 25 |
| 12 Apr after | 34.8 °C | 35 % | 26 km/h | 0.0 mm | High 26 |
| 13 Apr after | 34.4 °C | 35 % | 29 km/h | 0.0 mm | High 26 |
| 14 Apr after | 34.5 °C | 37 % | 28 km/h | 0.0 mm | High 26 |
| 15 Apr after | 34.7 °C | 40 % | 25 km/h | 2.4 mm | Low 10 |
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 · 29Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 19,313 haMae Wong23 March 2023 · 30 days · 16 km away
- 50,877 haWang ChaoMarch 2026 · 33 days · 31 km away
- 29,428 haUmphangFebruary 2026 · 15 days · 31 km away
- 26,711 haUmphangFebruary 2021 · 38 days · 37 km away
- 16,730 haUmphang11 March 2016 · 16 days · 37 km away
- 27,598 haUmphang6 March 2019 · 21 days · 39 km away
Frequently asked questions
- How long did the Khlong Lan fire last?
- GWIS (Copernicus) dates it between 1 April 2019 and 5 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 1,105 hectares (11.0 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Khlong Lan (1,110 ha, 0.8 %).
- What was the weather like?
- During the fire the temperature reached 32.7 °C, humidity dropped to 33 % and gusts hit 31 km/h. The fire danger index (FWI) reached 21, class Moderate.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Thailand (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.
Emergency number: 199 · 191
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.