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Region 2, Unorganized fire, 19 June 2017 Region 2, Unorganized

Out · last detection 13 Aug 2017, 19:32 UTC

The fire started on 19 June 2017 in Region 2, Unorganized, Canada, and satellites saw it burning for 56 days. Canada’s CWFIS (Natural Resources Canada) mapped an official burnt perimeter of 22,715 hectares from satellite imagery, spread across a single census subdivision.

It is the 58th largest in Northwest Territories since 2016 (of 358 with a page). Number 24 in Canada in 2017, of 242.

Burnt area
22,715ha
official perimeter (CWFIS)
Duration
56days
19 Jun 2017 – 13 Aug 2017
Census subdivisions hit
1
municipalities
Started on
19 Jun
2017
Heat detections
1,717
in a single hotspot: 172 MW
Danger at start
12
Moderate · FWI index
Average daily power
564MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 19 Jun13 Aug
13 Aug 2017

How it evolved, day by day

19 Jun 2017 · 30 MW · 2 20 Jun 2017 · 40 MW · 5 21 Jun 2017 · 81 MW · 7 22 Jun 2017 · 4 MW · 1 23 Jun 2017 · 388 MW · 13 24 Jun 2017 · 28 MW · 2 30 Jun 2017 · 173 MW · 3 1 Jul 2017 · 577 MW · 37 2 Jul 2017 · 22 MW · 7 3 Jul 2017 · 979 MW · 45 4 Jul 2017 · 247 MW · 16 5 Jul 2017 · 404 MW · 29 6 Jul 2017 · 1,458 MW · 76 7 Jul 2017 · 1,646 MW · 107 8 Jul 2017 · 203 MW · 38 9 Jul 2017 · 852 MW · 74 10 Jul 2017 · 5,782 MW · 190 11 Jul 2017 · 744 MW · 150 14 Jul 2017 · 201 MW · 31 15 Jul 2017 · 374 MW · 39 17 Jul 2017 · 304 MW · 22 18 Jul 2017 · 95 MW · 16 19 Jul 2017 · 912 MW · 66 20 Jul 2017 · 1,351 MW · 125 27 Jul 2017 · 7 MW · 2 28 Jul 2017 · 61 MW · 12 29 Jul 2017 · 1,065 MW · 64 30 Jul 2017 · 428 MW · 70 31 Jul 2017 · 1,634 MW · 119 1 Aug 2017 · 575 MW · 92 2 Aug 2017 · 68 MW · 31 3 Aug 2017 · 372 MW · 26 5 Aug 2017 · 12 MW · 2 6 Aug 2017 · 20 MW · 6 7 Aug 2017 · 217 MW · 27 8 Aug 2017 · 1,140 MW · 54 9 Aug 2017 · 349 MW · 27 10 Aug 2017 · 166 MW · 40 11 Aug 2017 · 48 MW · 5 12 Aug 2017 · 32 MW · 11 13 Aug 2017 · 35 MW · 28
19 Jun 3 Jul 10 Jul 30 Jul 9 Aug

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
59km/h · peak gust
22%lowest humidity

It had gone 0 days without rain (1 mm or more) when it started. Rain came after the fire: 7.1 mm on 14 Aug.

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 14% of the area of London (227 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 census subdivision

  1. Region 2, Unorganized where it started
    23,879 ha reached on 19 Jun
    0.1 %

Burnt area inside each census subdivision, from crossing the official 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 2015
Built-up area< 0.1 ha
Residents< 20

Inside the perimeter there was no noticeable built-up land and almost nobody lived there (GHSL 2015, 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)
19 Jun 23.6 °C 37 % 25 km/h 0.0 mm Moderate 12
20 Jun 24.3 °C 31 % 28 km/h 0.0 mm Moderate 18
21 Jun 25.5 °C 29 % 27 km/h 0.3 mm High 22
22 Jun 22.7 °C 35 % 25 km/h 2.2 mm Low 7
23 Jun 26.2 °C 28 % 24 km/h 0.0 mm Moderate 17
24 Jun 25.7 °C 34 % 24 km/h 3.2 mm Very low 5
25 Jun 20.5 °C 56 % 29 km/h 6.4 mm Very low 1
26 Jun 14.2 °C 79 % 40 km/h 2.4 mm Very low 0
27 Jun 19.7 °C 49 % 33 km/h 0.2 mm Very low 3
28 Jun 19.0 °C 53 % 30 km/h 0.0 mm Very low 5
29 Jun 23.7 °C 33 % 23 km/h 0.0 mm Moderate 12
30 Jun 23.3 °C 30 % 28 km/h 0.0 mm Moderate 16
1 Jul 25.0 °C 34 % 26 km/h 0.0 mm Moderate 16
2 Jul 25.6 °C 32 % 22 km/h 0.0 mm Moderate 17
3 Jul 22.2 °C 43 % 41 km/h 0.0 mm Moderate 20
4 Jul 21.8 °C 43 % 40 km/h 0.0 mm Moderate 20
5 Jul 28.8 °C 29 % 22 km/h 0.3 mm Moderate 19
6 Jul 29.0 °C 29 % 29 km/h 0.0 mm High 22
7 Jul 32.8 °C 22 % 23 km/h 0.0 mm High 27
8 Jul 31.3 °C 28 % 37 km/h 0.1 mm High 33
9 Jul 29.7 °C 37 % 34 km/h 0.0 mm High 29
10 Jul 28.1 °C 35 % 49 km/h 0.3 mm High 31
11 Jul 25.8 °C 44 % 46 km/h 0.6 mm High 23
12 Jul 19.0 °C 54 % 32 km/h 3.5 mm Very low 4
13 Jul 22.9 °C 29 % 15 km/h 0.0 mm Low 9
14 Jul 26.7 °C 24 % 17 km/h 0.0 mm Moderate 19
15 Jul 28.2 °C 30 % 37 km/h 0.0 mm High 26
16 Jul 19.7 °C 38 % 37 km/h 3.0 mm Low 6
17 Jul 22.0 °C 30 % 23 km/h 0.0 mm Low 10
18 Jul 23.6 °C 39 % 20 km/h 0.1 mm Moderate 15
19 Jul 25.1 °C 28 % 23 km/h 0.0 mm High 22
20 Jul 27.9 °C 25 % 21 km/h 0.0 mm High 25
21 Jul 20.2 °C 54 % 41 km/h 4.9 mm Very low 4
22 Jul 20.7 °C 29 % 26 km/h 0.0 mm Low 8
23 Jul 23.1 °C 51 % 46 km/h 7.0 mm Very low 2
24 Jul 23.3 °C 47 % 59 km/h 2.6 mm Very low 4
25 Jul 20.6 °C 56 % 38 km/h 0.6 mm Very low 5
26 Jul 14.7 °C 62 % 31 km/h 0.5 mm Low 6
27 Jul 15.6 °C 57 % 23 km/h 4.1 mm Very low 1
28 Jul 21.5 °C 31 % 32 km/h 0.0 mm Very low 5
29 Jul 22.7 °C 31 % 32 km/h 0.0 mm Moderate 11
30 Jul 25.2 °C 28 % 17 km/h 0.0 mm Moderate 15
31 Jul 27.3 °C 29 % 23 km/h 0.0 mm Moderate 18
1 Aug 27.1 °C 38 % 37 km/h 2.3 mm Low 6
2 Aug 25.7 °C 35 % 29 km/h 0.0 mm Moderate 13
3 Aug 24.7 °C 40 % 39 km/h 0.0 mm Moderate 15
4 Aug 20.5 °C 59 % 39 km/h 4.2 mm Very low 2
5 Aug 19.7 °C 38 % 27 km/h 0.0 mm Very low 5
6 Aug 23.9 °C 37 % 23 km/h 0.0 mm Low 11
7 Aug 29.0 °C 30 % 19 km/h 0.0 mm Moderate 16
8 Aug 29.1 °C 34 % 48 km/h 0.0 mm Moderate 21
9 Aug 28.4 °C 31 % 23 km/h 0.0 mm Moderate 19
10 Aug 29.8 °C 36 % 21 km/h 0.0 mm Moderate 19
11 Aug 26.6 °C 46 % 24 km/h 1.3 mm Low 10
12 Aug 25.8 °C 46 % 24 km/h 0.5 mm Moderate 13
13 Aug 26.3 °C 51 % 40 km/h 1.1 mm Low 11
14 Aug after 19.3 °C 82 % 25 km/h 7.1 mm Very low 0

Its twins: fires that started in the same weather

It started with an FWI of 12.0, a minimum humidity of 37% and rain the day before. Fires in the area that started in weather like this since 2016: 27.

FWI at the start 12.0
Minimum humidity 37 %
Days without rain 0
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Region 1, Unorganized fire, July 2021
13,943 ha 4 days FWI 12.0 Min. humidity 38 % 118 km away, in 2021

First rain (1 mm or more) after it ended: 2.2 mm on 3 Aug.

What happened to them

18 days
median duration
4,760 ha
median area
22 %
went past 10,000 ha
3.0 mm
rain at the end (median; 27 of 27 had it)

It was 4.8 times larger than the median of its twins and lasted 56 days, against 18 days.

Only 2 of its 27 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. All of them had rain in the ten days after the end: the first rainy day brought a median of 3.0 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

7.1 mmfirst rain
14 Augthe day after it ended
59km/h · max. gust

It was considered over on 13 Aug, and on 14 Aug 7.1 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 27 of 27, with a median of 3.0 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 · 12 Jun 2017
After · 20 Aug 2017

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 · 1,717Every 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 Canada

Frequently asked questions

How long did the Region 2, Unorganized fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 19 June 2017 to 13 August 2017 (56 days). The perimeter dates it from 20 June 2017 to 12 August 2017.
How much area did it burn?
The official perimeter mapped by Canada’s CWFIS (Natural Resources Canada) is 22,715 hectares (227.2 km²). Other tallies, such as those of provincial agencies, may give slightly different figures.
Which census subdivisions burned?
The fire only entered Region 2, Unorganized (23,879 ha, 0.1 %).
What was the weather like?
During the fire the temperature reached 32.8 °C, humidity dropped to 22 % and gusts hit 59 km/h. The fire danger index (FWI) reached 33, class High.
Where does this data come from?
From the official burnt perimeter of Canada’s CWFIS (NBAC, Natural Resources Canada) or, for the current season and until NBAC publishes it, the one rebuilt by GWIS (Copernicus); from NASA FIRMS VIIRS hotspots; and from the administrative boundaries of Canada. 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: 27. Their median duration was 18 days and their median area 4,760 ha; 22 % went past 10,000 ha. Only 2 of its 27 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. All of them had rain in the ten days after the end: the first rainy day brought a median of 3.0 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: 911 · 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.

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 911.

How we know this
  • Perimeter: NBAC (Natural Resources Canada), official.
  • Dates adjusted with the VIIRS detections inside the perimeter, which said 20 June 2017 to 12 August 2017. 1,717 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 2015, 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 is official: it comes from the National Burned Area Composite (NBAC) of the Canadian Wildland Fire Information System (CWFIS), Natural Resources Canada, which maps it on satellite imagery and publishes it under the Open Government Licence – Canada. Until NBAC publishes the current season, this year’s fires carry the perimeter rebuilt from heat detections by GWIS (Copernicus, CC BY 4.0), which is approximate. Heat detections come from the VIIRS sensors aboard Suomi-NPP and NOAA-20, distributed by NASA FIRMS at 375 m resolution. Census subdivision boundaries come from geoBoundaries ADM3 (Open Data Commons Open Database License 1.0). The area per census subdivision is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ slightly from official figures.