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AU · Australia · –

Wandering fire, April 2018 Wandering, Brookton, Beverley

Out · last detection 6 May 2018, 17:02 UTC

The fire started on 25 April 2018 in Wandering, Australia, and satellites saw it burning for 12 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 25,857 hectares from heat detections, spread across 3 municipalities.

It is the 42th largest in Western Australia since 2016 (of 427 with a page). Number 15 in Australia in 2018, of 162.

Burnt area
25,857ha
GWIS perimeter (Copernicus)
Duration
12days
25 Apr 2018 – 6 May 2018
Municipalities hit
3
local government areas
Started on
25 Apr
2018
Heat detections
1,985
in a single hotspot: 184 MW
Danger at start
8
Low · FWI index
Average daily power
1.7GW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 25 Apr6 May
6 May 2018

How it evolved, day by day

25 Apr 2018 · 14 MW · 5 26 Apr 2018 · 60 MW · 12 27 Apr 2018 · 121 MW · 24 28 Apr 2018 · 1,168 MW · 129 29 Apr 2018 · 3,686 MW · 428 30 Apr 2018 · 2,994 MW · 585 1 May 2018 · 1,494 MW · 127 2 May 2018 · 1 MW · 2 4 May 2018 · 2 MW · 2 5 May 2018 · 8,642 MW · 669 6 May 2018 · 3 MW · 2
25 Apr 28 Apr 1 May 5 May

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

The weather it burned in

27°high
78km/h · peak gust
15%lowest humidity

It had gone 2 days without rain (1 mm or more) when it started.

This area had burned before

7% of the perimeter overlaps earlier fires recorded since 2016: 106 ha in 2016, 1,673 ha in 2017.

How big is it?

10 km
It burned the equivalent of 16% of the area of London (259 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. Wandering where it started
    21,229 ha
    11 %
  2. 4,362 ha
    2.7 %
  3. 1,973 ha
    0.8 %

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.

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)
25 Apr 20.8 °C 43 % 27 km/h 0.0 mm Low 8
26 Apr 23.8 °C 45 % 32 km/h 0.0 mm Moderate 13
27 Apr 23.1 °C 45 % 36 km/h 0.0 mm Moderate 14
28 Apr 23.8 °C 51 % 39 km/h 0.0 mm Moderate 14
29 Apr 27.1 °C 24 % 44 km/h 0.0 mm High 29
30 Apr 25.7 °C 35 % 46 km/h 0.0 mm High 31
1 May 17.6 °C 40 % 34 km/h 0.0 mm High 22
2 May 15.9 °C 46 % 56 km/h 0.3 mm Moderate 21
3 May 17.7 °C 39 % 37 km/h 0.0 mm Moderate 18
4 May 18.5 °C 36 % 27 km/h 0.0 mm Moderate 16
5 May 24.3 °C 15 % 46 km/h 0.0 mm High 35
6 May 17.9 °C 25 % 78 km/h 2.1 mm Moderate 16
7 May after 18.6 °C 45 % 23 km/h 0.0 mm Low 9
8 May after 19.0 °C 46 % 27 km/h 0.0 mm Moderate 12
9 May after 20.3 °C 42 % 39 km/h 0.0 mm Moderate 19
10 May after 20.3 °C 47 % 49 km/h 0.0 mm High 22
11 May after 24.4 °C 38 % 38 km/h 0.0 mm High 22
12 May after 28.3 °C 28 % 36 km/h 0.0 mm High 26
13 May after 23.5 °C 50 % 24 km/h 0.0 mm Moderate 18
14 May after 21.5 °C 53 % 46 km/h 0.0 mm High 23
15 May after 22.7 °C 41 % 38 km/h 0.0 mm Moderate 20
16 May after 21.8 °C 35 % 28 km/h 0.0 mm Moderate 19

Its twins: fires that started in the same weather

It started with an FWI of 7.5, a minimum humidity of 43% and 2 days without rain. Fires in the area that started in weather like this since 2016: 19.

FWI at the start 7.5
Minimum humidity 43 %
Days without rain 2
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Wandering fire, October 2021
7,844 ha 2 days FWI 7.8 Min. humidity 41 % 24 km away, in 2021

First rain (1 mm or more) after it ended: 6.4 mm on 11 Oct.

What happened to them

6 days
median duration
6,242 ha
median area
5 %
went past 10,000 ha
3.8 mm
rain at the end (median; 18 of 19 had it)

It was 4.1 times larger than the median of its twins and lasted 12 days, against 6 days.

None of its 19 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 1 of 19, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 3.8 mm.

This is a bank of analogues: it shows what usually happens, not what will happen. With fewer than 15 twins we give no figures. How we calculate it

How it ended

—first rain
—no rain in ten days
78km/h · max. gust

It was considered over on 6 May, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 18 of 19, with a median of 3.8 mm.

Weather on this page: Open-Meteo.com (CC BY 4.0) · Copernicus Climate Change Service (ERA5)

How a twin is chosen

  • Same area: fires that have already ended, less than 250 km from this one, since 2016.
  • Same start: we compare the FWI on the first day, the minimum humidity that day and the run of days without rain before it. The slider sets how much they may differ.
  • Only pages with final weather data (ERA5 reanalysis) calculated in the same way as this fire’s; agricultural and grass burns and pages with data under review are left out.
  • Fires burning at the same time as this one (a week before or after) are left out: they share the same spell of weather and do not count as a precedent.
  • They are sorted by similarity, and the outlines of the first five are drawn.

How we calculate it

Before and after, from space

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

Before · 18 Apr 2018
After · 13 May 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 · 1,985Every 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 Wandering fire last?
GWIS (Copernicus) dates it between 25 April 2018 and 6 May 2018: 12 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 25,857 hectares (258.6 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 3 municipalities: Wandering (21,229 ha, 11 %); Brookton (4,362 ha, 2.7 %); Beverley (1,973 ha, 0.8 %).
What was the weather like?
During the fire the temperature reached 27.1 °C, humidity dropped to 15 % and gusts hit 78 km/h. The fire danger index (FWI) reached 35, class High.
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.
How did the fires that started in similar weather in this area end?
Fires less than 250 km away that started since 2016 with a similar FWI, humidity and dry spell: 19. Their median duration was 6 days and their median area 6,242 ha; 5 % went past 10,000 ha. None of its 19 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 1 of 19, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 3.8 mm.

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. Area: 27,499 → 25,857 ha.

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; 2 polygons grouped in this page.
  • Dates from the perimeter: the VIIRS detections inside it did not change them. 1,985 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.

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.