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Luwu Timur fire, September 2019 Luwu Timur

Out · last measured on 21 Sept 2019

The fire started on 9 September 2019 in Luwu Timur, Indonesia, and satellites saw it burning for 13 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 1,961 hectares from heat detections, spread across a single municipality.

It is the 14th largest in South Sulawesi since 2016 (of 21 with a page). Number 302 in Indonesia in 2019, of 417.

Compare with…

Suggestions: Luwu Timur · 2026Luwu Timur · 2026Luwu Timur · 2026Luwu Timur · 2026

We have the GWIS perimeter for this fire, but the VIIRS sensors did not capture it in enough detail: no day-by-day evolution, but the split by municipality is there.

Burnt area
1,961ha
GWIS perimeter (Copernicus)
Duration
13days
9 Sept 2019 – 21 Sept 2019
Municipalities hit
1
regencies
Started on
9 Sept
2019
Danger at start
13
Moderate · FWI index

Where it burned

The weather it burned in

32°high
38km/h · peak gust
31%lowest humidity

It had gone one day without rain (1 mm or more) when it started. Rain came after the fire: 2.1 mm on 25 Sept.

This area had burned before

No earlier perimeters overlap this fire since 2016, when the satellite record begins.

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. Luwu Timur where it started
    1,974 ha
    0.3 %

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 area0.18 ha
Residents< 20

Inside the perimeter there were about 0.18 hectares of 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)
9 Sept 31.5 °C 31 % 35 km/h 0.0 mm Moderate 13
10 Sept 30.1 °C 38 % 32 km/h 0.0 mm Moderate 13
11 Sept 30.0 °C 44 % 31 km/h 0.5 mm Moderate 13
12 Sept 28.5 °C 50 % 27 km/h 1.1 mm Low 7
13 Sept 31.4 °C 36 % 26 km/h 0.0 mm Moderate 13
14 Sept 30.8 °C 40 % 30 km/h 0.0 mm Moderate 14
15 Sept 30.0 °C 46 % 33 km/h 0.2 mm Moderate 15
16 Sept 30.6 °C 51 % 34 km/h 0.1 mm Moderate 15
17 Sept 31.0 °C 48 % 34 km/h 0.7 mm Moderate 13
18 Sept 30.9 °C 51 % 38 km/h 0.7 mm Moderate 13
19 Sept 31.6 °C 44 % 31 km/h 0.1 mm Moderate 15
20 Sept 31.7 °C 42 % 30 km/h 0.7 mm Moderate 14
21 Sept 30.3 °C 59 % 28 km/h 0.6 mm Moderate 11
22 Sept after 31.5 °C 50 % 34 km/h 0.4 mm Moderate 14
23 Sept after 32.2 °C 45 % 32 km/h 0.1 mm Moderate 16
24 Sept after 33.2 °C 35 % 35 km/h 0.0 mm Moderate 21
25 Sept after 31.6 °C 52 % 33 km/h 2.1 mm Low 7

Before and after, from space

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

Before · 2 Sept 2019
After · 28 Sept 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.

Other fires nearby

All fires in Indonesia ›

Frequently asked questions

How long did the Luwu Timur fire last?
GWIS (Copernicus) dates it between 9 September 2019 and 21 September 2019: 13 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 1,961 hectares (19.6 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Luwu Timur (1,974 ha, 0.3 %).
What was the weather like?
During the fire the temperature reached 31.7 °C, humidity dropped to 31 % and gusts hit 38 km/h. The fire danger index (FWI) reached 15, class Moderate.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Indonesia (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: 112 · Emergency number and official warnings ›

Satellite cross-check

History of this page Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.

No changes since 24 October 2026.

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
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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 112.

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. No 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.