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Khlong Lan fire, 10 April 2019 คลองลาน · Khlong Lan, Pang Sila Thong

Out · last detection 15 Apr 2019, 06:47 UTC

The fire started on 10 April 2019 in Khlong Lan, Thailand, and satellites saw it burning for 6 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 1,964 hectares from heat detections, spread across 2 municipalities.

It is the 28th largest in Kamphaeng Phet Province since 2016 (of 65 with a page). Number 117 in Thailand in 2019, of 386.

Compare with…

Suggestions: Khlong Lan · 2016Pang Sila Thong · 2023Mae Wong · 2019Wang Chao · 2026

Burnt area
1,964ha
GWIS perimeter (Copernicus)
Duration
6days
10 Apr 2019 – 15 Apr 2019
Municipalities hit
2
districts
Started on
10 Apr
2019
Heat detections
68
in a single hotspot: 100 MW
Danger at start
23
High · FWI index
Average daily power
103MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 10 Apr15 Apr
15 Apr 2019

How it evolved, day by day

10 Apr 2019 · 3 MW · 1 11 Apr 2019 · 392 MW · 30 12 Apr 2019 · 90 MW · 22 13 Apr 2019 · 125 MW · 13 14 Apr 2019 · 1 MW · 1 15 Apr 2019 · 9 MW · 1
10 Apr 11 Apr 12 Apr 13 Apr 14 Apr 15 Apr

Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.

The weather it burned in

35°high
31km/h · peak gust
28%lowest humidity

It had gone 3 days without rain (1 mm or more) when it started. Rain came after the fire: 1.4 mm on 15 Apr.

This area had burned before

91% of the perimeter overlaps earlier fires recorded since 2016: 1,980 ha in 2016. Part of it burned more than once, so the yearly figures add up to more than the 1,797 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 1.2% of the area of London (20 km² against 1,583 km²).

London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).

This compares size, not location: both shapes are at the same scale, north up, centred on each other.

What happened to each town

  1. Khlong Lan คลองลาน where it started
    1,866 ha reached on 10 Apr
    1.3 %
  2. Pang Sila Thong ปางศิลาทอง
    108 ha reached on 13 Apr
    0.1 %

Burnt area inside each municipality, from crossing the GWIS perimeter with administrative boundaries. The distance runs from the point marking the centre of each area to the nearest fire: staying a kilometre away does not mean it reached the houses.

People and buildings inside the perimeter

GHSL 2020
Built-up area< 0.1 ha
Residents< 20

Inside the perimeter there was no noticeable built-up land and almost nobody lived there (GHSL 2020, satellite-based estimate).

This is an estimate on 100 m cells, made from satellite imagery and census data: it does not mean that homes burned or that anyone was harmed. The perimeter also contains land that never burned.

Source: Global Human Settlement Layer (GHS-BUILT-S and GHS-POP R2023A), European Commission Joint Research Centre (JRC), © European Union, CC BY 4.0. Sum inside the perimeter computed by WorldFires. human-settlement.emergency.copernicus.eu

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 31.6 °C 33 % 31 km/h 0.0 mm High 23
2 Apr 30.4 °C 48 % 30 km/h 0.8 mm Moderate 13
3 Apr 31.7 °C 38 % 23 km/h 0.0 mm Moderate 17
4 Apr 32.1 °C 32 % 27 km/h 0.0 mm Moderate 21
5 Apr 32.1 °C 38 % 23 km/h 0.7 mm Moderate 17
6 Apr 30.4 °C 46 % 29 km/h 0.2 mm Moderate 18
7 Apr 32.3 °C 35 % 26 km/h 1.2 mm Moderate 15
8 Apr 33.4 °C 32 % 24 km/h 0.1 mm High 22
9 Apr 34.0 °C 29 % 29 km/h 0.0 mm High 25
10 Apr 33.4 °C 32 % 29 km/h 0.0 mm High 26
11 Apr 35.0 °C 28 % 28 km/h 0.0 mm High 27
12 Apr 34.3 °C 33 % 25 km/h 0.0 mm High 28
13 Apr 34.3 °C 32 % 28 km/h 0.0 mm High 28
14 Apr 34.1 °C 32 % 26 km/h 0.0 mm High 28
15 Apr 34.1 °C 37 % 27 km/h 1.4 mm Moderate 17

Before and after, from space

Drag the line to compare the same ground before the fire and after it.

Before · 3 Apr 2019
After · 22 Apr 2019

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 · 68Every satellite heat detection, one by one, with time, satellite, power and coordinates.
⬇ Download CSV Times in UTC. Each detection is a 375 m pixel: a large fire yields hundreds per pass.
Date and timeSatelliteFRP (MW)LatLon

Other fires nearby

All fires in Thailand ›

Frequently asked questions

How long did the Khlong Lan fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 10 April 2019 to 15 April 2019 (6 days). The perimeter dates it from 10 April 2019 to 13 April 2019.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 1,964 hectares (19.6 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Khlong Lan (1,866 ha, 1.3 %); Pang Sila Thong (108 ha, 0.1 %).
What was the weather like?
During the fire the temperature reached 35.0 °C, humidity dropped to 28 % and gusts hit 31 km/h. The fire danger index (FWI) reached 28, class High.
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 · Emergency number and official warnings ›

Satellite cross-check

History of this page · 1 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
  1. Last day with fire: 13 April 2019 → 15 April 2019.

RSS Changes to this page

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
What do you think is wrong?

We will only use your email to reply about this report. Privacy. This is not an emergency service: if there is a fire now, call 199 · 191.

How we know this
  • Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery.
  • Dates adjusted with the VIIRS detections inside the perimeter, which said 10 April 2019 to 13 April 2019. 68 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.
  • Built-up area and population come from the JRC Global Human Settlement Layer (epoch 2020, 100 m cells), summed inside the perimeter: an estimate of what was there, not a damage count.

How we build fire pages: methodology ›

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.