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PG · Papua New Guinea · –

Middle Fly District fire, 18 September 2026 Middle Fly District

Burning · last detection 5 Nov 2026, 04:25 UTC

The fire started on 18 September 2026 in Middle Fly District, Papua New Guinea, and satellites saw it burning for 49 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 37,618 hectares from heat detections, spread across a single municipality.

This page is probably a fire complex, not a single fire. GWIS merges into one perimeter the fires that touch over weeks, which in large burning seasons can join dozens of separate fires. The total area is reliable; the origin and dates refer to the whole complex.

Other fire pages in the same area and on the same dates:

Number 5 in Papua New Guinea in 2026, of 194.

GWIS near-real-time perimeter, from the layer that changed in October 2025: this fire is not compared with fires from earlier years, because since then the GWIS layer gives more and larger perimeters.

Is it still active?

Satellites detected fire on 5 Nov 2026, 04:25 UTC. Everything suggests it is still burning. Satellites pass a few times a day and cloud or smoke can hide the fire: a lack of detections is not an official extinction. Each country’s emergency service declares a fire contained or out.

Burnt area
37,618ha
GWIS perimeter (Copernicus)
Duration
49days
18 Sept 2026 – 5 Nov 2026
Municipalities hit
1
districts
Started on
18 Sept
2026
Heat detections
1,923
in a single hotspot: 189 MW
Danger at start
25
High · FWI index
Average daily power
327MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 18 Sept5 Nov
5 Nov 2026

How it evolved, day by day

18 Sept 2026 · 9 MW · 1 19 Sept 2026 · 2 MW · 1 22 Sept 2026 · 27 MW · 6 23 Sept 2026 · 13 MW · 1 24 Sept 2026 · 201 MW · 10 25 Sept 2026 · 22 MW · 10 26 Sept 2026 · 91 MW · 15 27 Sept 2026 · 530 MW · 42 28 Sept 2026 · 868 MW · 63 29 Sept 2026 · 215 MW · 45 30 Sept 2026 · 488 MW · 73 1 Oct 2026 · 340 MW · 37 2 Oct 2026 · 283 MW · 34 3 Oct 2026 · 5 MW · 4 4 Oct 2026 · 241 MW · 30 5 Oct 2026 · 803 MW · 116 6 Oct 2026 · 1,074 MW · 185 7 Oct 2026 · 1,178 MW · 157 8 Oct 2026 · 680 MW · 98 9 Oct 2026 · 382 MW · 36 10 Oct 2026 · 1,738 MW · 114 11 Oct 2026 · 2,045 MW · 265 12 Oct 2026 · 318 MW · 47 15 Oct 2026 · 20 MW · 4 16 Oct 2026 · 88 MW · 53 17 Oct 2026 · 652 MW · 161 18 Oct 2026 · 160 MW · 40 19 Oct 2026 · 182 MW · 34 20 Oct 2026 · 1 MW · 1 21 Oct 2026 · 116 MW · 18 22 Oct 2026 · 79 MW · 39 23 Oct 2026 · 38 MW · 9 24 Oct 2026 · 86 MW · 16 25 Oct 2026 · 0 MW · 0 26 Oct 2026 · 10 MW · 2 27 Oct 2026 · 52 MW · 9 28 Oct 2026 · 38 MW · 10 29 Oct 2026 · 38 MW · 6 30 Oct 2026 · 0 MW · 0 31 Oct 2026 · 249 MW · 29 1 Nov 2026 · 38 MW · 6 2 Nov 2026 · 19 MW · 3 3 Nov 2026 · 61 MW · 13 4 Nov 2026 · 210 MW · 29 5 Nov 2026 · 365 MW · 51
18 Sept 29 Sept 11 Oct 28 Oct

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

The weather it burned in

37°high
48km/h · peak gust
22%lowest humidity

It had gone 3 days without rain (1 mm or more) when it started.

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 24% of the area of London (376 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. Middle Fly District where it started
    36,999 ha reached on 18 Sept
    0.7 %

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) · forecast models, provisional until the ERA5 reanalysis arrives

Day High Min. humidity Peak gust Rain Danger (FWI)
18 Sept 32.9 °C 45 % 48 km/h 0.8 mm High 25
19 Sept 31.6 °C 49 % 43 km/h 1.4 mm Moderate 21
20 Sept 31.5 °C 47 % 42 km/h 0.1 mm Moderate 20
21 Sept 33.0 °C 41 % 34 km/h 0.0 mm Moderate 20
22 Sept 33.2 °C 43 % 32 km/h 1.3 mm Moderate 18
23 Sept 32.2 °C 47 % 35 km/h 0.0 mm Moderate 20
24 Sept 33.9 °C 40 % 37 km/h 0.3 mm High 24
25 Sept 34.3 °C 40 % 39 km/h 0.6 mm High 25
26 Sept 34.0 °C 36 % 38 km/h 0.0 mm High 29
27 Sept 34.6 °C 37 % 37 km/h 0.1 mm High 30
28 Sept 35.1 °C 33 % 40 km/h 0.0 mm High 31
29 Sept 34.8 °C 34 % 37 km/h 0.0 mm High 30
30 Sept 35.2 °C 34 % 36 km/h 0.1 mm High 31
1 Oct 34.2 °C 41 % 41 km/h 1.4 mm High 28
2 Oct 34.5 °C 36 % 41 km/h 0.1 mm High 28
3 Oct 32.0 °C 42 % 38 km/h 0.1 mm High 27
4 Oct 32.2 °C 44 % 34 km/h 0.1 mm High 26
5 Oct 35.4 °C 32 % 33 km/h 0.0 mm High 28
6 Oct 35.9 °C 30 % 35 km/h 0.0 mm High 33
7 Oct 36.2 °C 29 % 28 km/h 0.0 mm High 30
8 Oct 36.6 °C 25 % 30 km/h 0.0 mm High 31
9 Oct 35.5 °C 34 % 28 km/h 0.2 mm High 30
10 Oct 36.6 °C 24 % 27 km/h 0.0 mm High 32
11 Oct 36.5 °C 22 % 34 km/h 0.0 mm High 35
12 Oct 36.3 °C 28 % 35 km/h 0.0 mm High 34
13 Oct 37.2 °C 29 % 34 km/h 0.1 mm High 29
14 Oct 35.9 °C 38 % 30 km/h 1.4 mm High 24
15 Oct 35.3 °C 41 % 28 km/h 2.7 mm Moderate 19
16 Oct 36.5 °C 29 % 35 km/h 0.0 mm High 28
17 Oct 35.9 °C 28 % 34 km/h 0.0 mm High 31
18 Oct 35.9 °C 32 % 31 km/h 0.0 mm High 30
19 Oct 36.1 °C 32 % 32 km/h 0.4 mm High 31
20 Oct 36.6 °C 27 % 32 km/h 0.0 mm High 33
21 Oct 37.2 °C 32 % 33 km/h 0.1 mm High 33
22 Oct 36.5 °C 37 % 27 km/h 0.4 mm High 29
23 Oct 36.5 °C 39 % 23 km/h 4.2 mm High 27
24 Oct 36.6 °C 39 % 23 km/h 1.5 mm Low 6
25 Oct 36.4 °C 41 % 28 km/h 2.0 mm Moderate 19
26 Oct 35.6 °C 39 % 25 km/h 3.9 mm Low 8
27 Oct 35.6 °C 42 % 26 km/h 2.6 mm Very low 4
28 Oct 36.6 °C 34 % 22 km/h 1.1 mm Low 7
29 Oct 36.2 °C 43 % 26 km/h 3.0 mm Moderate 12
30 Oct 35.5 °C 44 % 23 km/h 7.3 mm Very low 3
31 Oct 36.1 °C 38 % 25 km/h 1.4 mm Low 10
1 Nov 34.5 °C 49 % 22 km/h 3.2 mm Very low 3
2 Nov 33.5 °C 47 % 30 km/h 5.9 mm Very low 3
3 Nov 33.4 °C 54 % 20 km/h 1.0 mm Very low 1
4 Nov 34.8 °C 40 % 26 km/h 8.1 mm Very low 1
5 Nov 35.6 °C 39 % 23 km/h 0.6 mm Low 7

Before and after, from space

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

Before · 11 Sept 2026
After · 4 Nov 2026

If the day is cloudy, change the date: each satellite passes once a day. In false colour the burnt ground looks brown or red.

The smoke

CAMS · Copernicus

On 8 October 2026 the air beside the fire reached 1,084 µg/m³ of PM2.5. That day averaged 306: 20 times the WHO daily guideline (15).

PM2.5 peak1,084 µg/m³
Days over the guideline41 days
PM101,103 µg/m³
Optical depth4.23
16 Sept26 Sept6 Oct16 Oct26 Oct
Good Fair Moderate Poor Very poor Extremely poor

Particles from the Copernicus CAMS model at the centre of the perimeter; these are not measurements in each town. The pale bar is the worst hour, the solid one the daily average.

Open-Meteo.com (CC BY 4.0) · Copernicus Atmosphere Monitoring Service (CAMS)

Detections table · 1,923Every 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 Papua New Guinea

Frequently asked questions

How long did the Middle Fly District fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 18 September 2026 to 5 November 2026 (49 days). The perimeter dates it from 21 September 2026 to 4 November 2026.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 37,618 hectares (376.2 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Middle Fly District (36,999 ha, 0.7 %).
Is the Middle Fly District fire still active?
Yes: satellites detected fire on 5 Nov 2026, 04:25 UTC. Check the emergency service for the official status.
What was the weather like?
During the fire the temperature reached 37.2 °C, humidity dropped to 22 % and gusts hit 48 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 Papua New Guinea (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.

Satellite cross-check

History of this page · 1 Changes in area, dates, name, official record or merged pages, compared every night since 5 November 2026.
  1. Page published (37,618 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
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How we know this
  • Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery; 2 polygons grouped in this page.
  • Dates adjusted with the VIIRS detections inside the perimeter, which said 21 September 2026 to 4 November 2026. 1,923 Suomi-NPP VIIRS detections on those dates.
  • We have not matched this page with any official record.
  • Weather: ECMWF IFS model, provisional until the ERA5 reanalysis arrives.

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.