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AU · Australia · –

Unincorporated NT fire, 9 May 2018 Unincorporated NT, Coomalie

Out · last detection 11 Jun 2018, 04:33 UTC

The fire started on 9 May 2018 in Unincorporated NT, Australia, and satellites saw it burning for 34 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 17,470 hectares from heat detections, spread across 2 municipalities.

This entry is probably a savanna fire in Australia’s tropical north, not a bushfire like those in the south of the country. Millions of hectares of northern savanna and grassland burn every year: much of it in burns lit on purpose early in the dry season (traditional fire management, parks and cattle stations), the rest in grass fires that return to the same ground every few years. This is our assumption, based on the location; it is not confirmed. That is why it is left out of the wildfire rankings.

Burnt area
17,470ha
GWIS perimeter (Copernicus)
Duration
34days
9 May 2018 – 11 Jun 2018
Municipalities hit
2
local government areas
Started on
9 May
2018
Heat detections
859
in a single hotspot: 69 MW
Danger at start
50
Very high · FWI index
Average daily power
99MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 9 May11 Jun
11 Jun 2018

How it evolved, day by day

9 May 2018 · 65 MW · 19 10 May 2018 · 167 MW · 27 11 May 2018 · 22 MW · 6 12 May 2018 · 31 MW · 13 13 May 2018 · 148 MW · 56 14 May 2018 · 253 MW · 70 15 May 2018 · 557 MW · 136 16 May 2018 · 334 MW · 89 17 May 2018 · 179 MW · 58 18 May 2018 · 143 MW · 51 19 May 2018 · 179 MW · 38 20 May 2018 · 46 MW · 19 21 May 2018 · 66 MW · 15 22 May 2018 · 25 MW · 8 23 May 2018 · 3 MW · 3 24 May 2018 · 7 MW · 4 25 May 2018 · 23 MW · 7 26 May 2018 · 22 MW · 4 27 May 2018 · 2 MW · 2 28 May 2018 · 8 MW · 1 29 May 2018 · 131 MW · 32 30 May 2018 · 163 MW · 33 31 May 2018 · 102 MW · 29 1 Jun 2018 · 72 MW · 22 2 Jun 2018 · 39 MW · 16 3 Jun 2018 · 20 MW · 15 4 Jun 2018 · 35 MW · 11 5 Jun 2018 · 32 MW · 17 6 Jun 2018 · 26 MW · 12 7 Jun 2018 · 262 MW · 7 8 Jun 2018 · 60 MW · 13 9 Jun 2018 · 83 MW · 15 10 Jun 2018 · 63 MW · 10 11 Jun 2018 · 3 MW · 1
9 May 15 May 23 May 30 May 6 Jun

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

The weather it burned in

33°high
54km/h · peak gust
14%lowest humidity

It had gone 19 days without rain (1 mm or more) when it started.

This area had burned before

73% of the perimeter overlaps earlier fires recorded since 2016: 12,982 ha in 2016, 1,579 ha in 2017. Part of it burned more than once, so the yearly figures add up to more than the 12,713 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 11% of the area of London (175 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. Unincorporated NT where it started
    17,082 ha reached on 9 May
    0.9 %
  2. 27 ha
    0.0 %

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)
9 May 33.3 °C 23 % 44 km/h 0.0 mm Very high 50
10 May 33.4 °C 24 % 42 km/h 0.0 mm Very high 49
11 May 32.7 °C 22 % 47 km/h 0.0 mm Extreme 57
12 May 29.1 °C 19 % 48 km/h 0.0 mm Extreme 55
13 May 29.5 °C 18 % 46 km/h 0.0 mm Extreme 57
14 May 29.8 °C 19 % 46 km/h 0.0 mm Extreme 55
15 May 29.4 °C 16 % 49 km/h 0.0 mm Extreme 59
16 May 28.9 °C 17 % 49 km/h 0.0 mm Extreme 61
17 May 28.7 °C 17 % 53 km/h 0.0 mm Extreme 66
18 May 29.5 °C 22 % 49 km/h 0.0 mm Extreme 64
19 May 29.6 °C 22 % 46 km/h 0.0 mm Extreme 59
20 May 30.7 °C 33 % 42 km/h 0.0 mm Extreme 50
21 May 31.7 °C 30 % 48 km/h 0.0 mm Extreme 53
22 May 30.8 °C 24 % 50 km/h 0.0 mm Extreme 55
23 May 31.5 °C 28 % 45 km/h 0.0 mm Extreme 53
24 May 32.4 °C 26 % 35 km/h 0.0 mm Very high 44
25 May 32.4 °C 34 % 40 km/h 0.0 mm Very high 46
26 May 32.8 °C 32 % 37 km/h 0.0 mm Very high 44
27 May 32.4 °C 28 % 28 km/h 0.0 mm Very high 40
28 May 32.0 °C 32 % 34 km/h 0.0 mm Very high 41
29 May 32.3 °C 24 % 38 km/h 0.0 mm Very high 47
30 May 31.4 °C 27 % 54 km/h 0.0 mm Extreme 66
31 May 31.5 °C 27 % 45 km/h 0.0 mm Extreme 56
1 Jun 31.3 °C 28 % 39 km/h 0.0 mm Very high 49
2 Jun 30.8 °C 29 % 39 km/h 0.0 mm Very high 47
3 Jun 30.1 °C 18 % 38 km/h 0.0 mm Extreme 54
4 Jun 29.3 °C 15 % 39 km/h 0.0 mm Extreme 60
5 Jun 28.7 °C 16 % 39 km/h 0.0 mm Extreme 57
6 Jun 29.3 °C 14 % 33 km/h 0.0 mm Extreme 54
7 Jun 29.8 °C 32 % 29 km/h 0.0 mm High 38
8 Jun 30.7 °C 33 % 31 km/h 0.0 mm High 36
9 Jun 30.8 °C 38 % 29 km/h 0.0 mm High 34
10 Jun 32.0 °C 27 % 32 km/h 0.0 mm Very high 41
11 Jun 31.6 °C 30 % 24 km/h 0.0 mm High 34
12 Jun after 32.3 °C 37 % 26 km/h 0.0 mm High 30
13 Jun after 31.6 °C 39 % 20 km/h 0.0 mm High 29
14 Jun after 32.0 °C 37 % 22 km/h 0.0 mm High 28
15 Jun after 31.3 °C 31 % 38 km/h 0.0 mm Very high 39
16 Jun after 31.3 °C 32 % 52 km/h 0.0 mm Extreme 54
17 Jun after 30.1 °C 19 % 46 km/h 0.0 mm Extreme 60
18 Jun after 29.9 °C 22 % 45 km/h 0.0 mm Extreme 55
19 Jun after 31.2 °C 27 % 38 km/h 0.0 mm Extreme 51
20 Jun after 32.3 °C 18 % 36 km/h 0.0 mm Extreme 58
21 Jun after 30.8 °C 14 % 37 km/h 0.0 mm Extreme 60

Before and after, from space

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

Before · 2 May 2018
After · 18 Jun 2018

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 · 859Every 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 Australia

Frequently asked questions

How long did the Unincorporated NT fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 9 May 2018 to 11 June 2018 (34 days). The perimeter dates it from 10 May 2018 to 11 June 2018.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 17,470 hectares (174.7 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Unincorporated NT (17,082 ha, 0.9 %); Coomalie (27 ha, 0.0 %).
What was the weather like?
During the fire the temperature reached 33.4 °C, humidity dropped to 14 % and gusts hit 54 km/h. The fire danger index (FWI) reached 66, class Extreme.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Australia (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: 000 · 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. Start date: 10 May 2018 → 9 May 2018.

RSS Changes to this page With cross-checks and a citable version

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 000.

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 May 2018 to 11 June 2018. 859 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.
  • Probably a vegetation burn: not counted in the totals.

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 4.0 International (CC BY 4.0)). 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.