Burned area
satellite only42,337ha
Union of 2 NBAC (NRCan) perimeters: overlapping areas count once.
- Source
- NBAC (NRCan)
- Date
- 3 Jun 2017 – 17 Aug 2017
+− cross-check
No official record is matched to this page to compare it with.
CA · Canada · –
Region 5, Unorganized fire, June 2017 Region 5, Unorganized
Out · last detection 17 Aug 2017, 21:36 UTC
The fire started on 3 June 2017 in Region 5, Unorganized, Canada, and satellites saw it burning for 76 days. Canada’s CWFIS (Natural Resources Canada) mapped an official burnt perimeter of 42,337 hectares from satellite imagery, spread across a single census subdivision.
It is the 31th largest in Northwest Territories since 2016 (of 358 with a page). Number 11 in Canada in 2017, of 242.
Use this data
Fire page data · version 2026-10-24matches the official recordwith caveatssatellite onlymodel
When copying, the sentence is
Tick the figures you want: they make up the lede and the CSV.
Duration by satellite
satellite only76days
3 Jun 2017 to 17 Aug 2017: first and last day with fire on the page.
- Source
- NBAC (NRCan) · NASA FIRMS · VIIRS
- Date
- last detection: 17 Aug 2017, 21:36 UTC
+− cross-check
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.
Start
satellite only3 Jun 2017
First day with fire seen by the satellites or the perimeter.
- Source
- NBAC (NRCan) · NASA FIRMS · VIIRS
- Date
- 3 Jun 2017
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only7,006
VIIRS detections at 375 m. Most intense hotspot: 371 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 3 Jun 2017 – 17 Aug 2017
+− cross-check
There is no official record to compare with. Each hotspot is a pixel detected in one satellite pass, not a separate fire.
The worst day
satellite only37,014MW
Total radiative power on 12 August 2017; hotspots that day: 2,204.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 12 Aug 2017
+− cross-check
Fire radiative power (FRP) measures the energy the fire gives off when the satellite passes. Added up by day, it compares intensity, not area.
Danger at the start
model15.4FWI · moderate
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 1.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 3 Jun 2017, local noon
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
This is an index computed from weather model data, not a measurement of the fire nor an official warning. Danger warnings are issued by each country’s authority. Emergency number and official warnings
Weather during the fire
model32.8°C · 20% RH
High of 32.8 °C and minimum humidity of 20% on 11 August 2017; gusts of 69 km/h on 10 June 2017.
- Source
- weather model at the fire’s grid cell
- Date
- 3 Jun 2017 – 17 Aug 2017
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
These are model values for a cell of about 25 km, not from a weather station: they may differ from what was measured on the ground.
This page’s change log has been kept since 24 October 2026: every night what it publishes is compared and the difference is logged. Anything earlier is reconstructed from each source’s date and marked as reconstructed.
Show
-
· reconstructed weatherWeather and FWI computed from the ERA5 reanalysis
-
· reconstructed GHSLPopulation and built-up area computed
What was saved on 24 October 2026
Every night a snapshot of what the page shows is saved. If anything changes, it appears in the list as a log entry.
- Area
- 42,337 ha
- Dates
- 3 Jun 2017 – 17 Aug 2017
- Name
- Region 5, Unorganized
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/region-5-unorganized-2017-06?v=2026-10-24A version keeps the area, dates, name and official record; the area as it was logged (changes under 2% are not logged). The map, hotspots and weather always show today’s data.
Citation
A lede of about 60 words figures only, no adjectives
CSV for this fire region-5-unorganized-2017-06.csv · daily, no individual hotspots
| fecha | focos_viirs | frp_mw | tmax_c | tmin_c | hr_min_pct | viento_max_kmh | racha_max_kmh | precip_mm | fwi | clase_fwi | dentro_del_incendio |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017-06-03 | 0 | 0 | 19.3 | 12.1 | 51 | 16.4 | 37.1 | 0.7 | 15.4 | moderado | 1 |
| 2017-06-04 | 0 | 0 | 23.5 | 11.4 | 16 | 16.3 | 37.8 | 0.6 | 26.6 | alto | 1 |
| 2017-06-05 | 0 | 0 | 21 | 9.3 | 33 | 12.6 | 33.8 | 0 | 25.9 | alto | 1 |
| 2017-06-06 | 0 | 0 | 23.4 | 8.4 | 23 | 13.4 | 31 | 0 | 26.5 | alto | 1 |
| 2017-06-07 | 0 | 0 | 25.3 | 9.3 | 24 | 12.9 | 23 | 0 | 24.7 | alto | 1 |
| 2017-06-08 | 1 | 2 | 27.5 | 14.1 | 18 | 20.7 | 43.9 | 0 | 38.3 | muy_alto | 1 |
| 2017-06-09 | 0 | 0 | 18.5 | 9.7 | 25 | 16.8 | 40 | 0 | 31.6 | alto | 1 |
| 2017-06-10 | 0 | 0 | 15.8 | 6.6 | 38 | 28.2 | 68.8 | 4.4 | 29.1 | alto | 1 |
| 2017-06-11 | 0 | 0 | 10.7 | 3.9 | 37 | 24.1 | 52.9 | 0 | 6.7 | bajo | 1 |
| 2017-06-12 | 0 | 0 | 16.4 | 4.1 | 33 | 15.5 | 41.4 | 0 | 15.5 | moderado | 1 |
| 2017-06-13 | 0 | 0 | 17.3 | 6.9 | 51 | 18.6 | 45.4 | 0 | 16.3 | moderado | 1 |
| 2017-06-14 | 0 | 0 | 17.6 | 4.1 | 27 | 12.6 | 33.5 | 0 | 21 | moderado | 1 |
| 2017-06-15 | 0 | 0 | 15.7 | 8.7 | 45 | 15.1 | 29.9 | 0.7 | 18.4 | moderado | 1 |
| 2017-06-16 | 0 | 0 | 22.7 | 12.7 | 34 | 17.8 | 48.6 | 2.1 | 8.9 | bajo | 1 |
| 2017-06-17 | 0 | 0 | 20.7 | 12.5 | 34 | 15.3 | 33.5 | 3.8 | 0.4 | muy_bajo | 1 |
| 2017-06-18 | 0 | 0 | 22.4 | 8.2 | 25 | 9.2 | 24.5 | 0.9 | 5.3 | bajo | 1 |
| 2017-06-19 | 0 | 0 | 23.2 | 9.1 | 30 | 11.1 | 24.8 | 0 | 13.8 | moderado | 1 |
| 2017-06-20 | 0 | 0 | 24.8 | 9.7 | 24 | 12.2 | 30.6 | 0 | 29.7 | alto | 1 |
| 2017-06-21 | 0 | 0 | 17.8 | 7.8 | 46 | 24.9 | 60.5 | 0 | 36.2 | alto | 1 |
| 2017-06-22 | 0 | 0 | 17.5 | 4.4 | 25 | 16.2 | 41 | 0 | 25.3 | alto | 1 |
| 2017-06-23 | 0 | 0 | 20.7 | 6.1 | 28 | 17.5 | 42.5 | 0 | 25.6 | alto | 1 |
| 2017-06-24 | 0 | 0 | 23.3 | 5.8 | 20 | 9.1 | 18.4 | 0 | 21.3 | alto | 1 |
| 2017-06-25 | 0 | 0 | 27.4 | 8.8 | 15 | 15.8 | 37.8 | 0 | 38 | muy_alto | 1 |
| 2017-06-26 | 0 | 0 | 27.3 | 15.3 | 30 | 18.3 | 48.2 | 1.1 | 38.6 | muy_alto | 1 |
| 2017-06-27 | 0 | 0 | 25.3 | 14.9 | 30 | 14.2 | 46.8 | 3.7 | 6.7 | bajo | 1 |
| 2017-06-28 | 0 | 0 | 23.9 | 14.2 | 29 | 12 | 23.8 | 0 | 14.6 | moderado | 1 |
| 2017-06-29 | 0 | 0 | 23.3 | 14.1 | 39 | 13.2 | 31.7 | 0.5 | 21.8 | alto | 1 |
| 2017-06-30 | 0 | 0 | 25.2 | 12.4 | 25 | 11.9 | 33.5 | 0 | 29.1 | alto | 1 |
| 2017-07-01 | 0 | 0 | 24.2 | 15.5 | 41 | 16.7 | 36.4 | 0.7 | 28 | alto | 1 |
| 2017-07-02 | 0 | 0 | 27.1 | 16.9 | 45 | 13.8 | 36 | 2.2 | 17.7 | moderado | 1 |
| 2017-07-03 | 0 | 0 | 22.8 | 13.3 | 48 | 10 | 27.7 | 9.3 | 4.8 | muy_bajo | 1 |
| 2017-07-04 | 0 | 0 | 14.5 | 11.7 | 88 | 18.9 | 43.9 | 12.5 | 0 | muy_bajo | 1 |
| 2017-07-05 | 0 | 0 | 21.4 | 13.3 | 71 | 12.3 | 26.6 | 14.8 | 0 | muy_bajo | 1 |
| 2017-07-06 | 0 | 0 | 25.5 | 13.5 | 37 | 10.5 | 24.1 | 0.2 | 0.5 | muy_bajo | 1 |
| 2017-07-07 | 0 | 0 | 28.3 | 13.7 | 32 | 12.3 | 30.2 | 0 | 7 | bajo | 1 |
| 2017-07-08 | 0 | 0 | 29.6 | 15.1 | 32 | 9.9 | 18 | 0 | 10.4 | bajo | 1 |
| 2017-07-09 | 0 | 0 | 29.2 | 15.7 | 34 | 12.3 | 20.9 | 0 | 14.7 | moderado | 1 |
| 2017-07-10 | 0 | 0 | 25.9 | 17.8 | 47 | 12.3 | 29.2 | 0.9 | 14.1 | moderado | 1 |
| 2017-07-11 | 0 | 0 | 25.2 | 16.1 | 48 | 8 | 36 | 2.3 | 7.9 | bajo | 1 |
| 2017-07-12 | 0 | 0 | 24.4 | 14.1 | 42 | 11.2 | 20.9 | 0.3 | 3.6 | muy_bajo | 1 |
| 2017-07-13 | 0 | 0 | 23.3 | 12.5 | 48 | 17.7 | 42.1 | 0.3 | 9.4 | bajo | 1 |
| 2017-07-14 | 0 | 0 | 22.2 | 9.4 | 31 | 9.5 | 18 | 0 | 9.9 | bajo | 1 |
| 2017-07-15 | 0 | 0 | 25.8 | 12 | 40 | 14.3 | 35.6 | 0 | 18.8 | moderado | 1 |
| 2017-07-16 | 0 | 0 | 22.2 | 13.3 | 54 | 19.5 | 41 | 3.2 | 16.8 | moderado | 1 |
| 2017-07-17 | 0 | 0 | 13.1 | 6.8 | 46 | 20.9 | 47.5 | 0.3 | 4.6 | muy_bajo | 1 |
| 2017-07-18 | 4 | 37 | 19.5 | 3.8 | 28 | 15.3 | 38.5 | 0 | 11.3 | moderado | 1 |
| 2017-07-19 | 0 | 0 | 19.4 | 8.7 | 33 | 14.5 | 37.8 | 0 | 17.3 | moderado | 1 |
| 2017-07-20 | 4 | 199 | 22.7 | 5.4 | 23 | 12.5 | 31 | 0 | 22.3 | alto | 1 |
| 2017-07-21 | 0 | 0 | 25 | 12.1 | 40 | 14.1 | 32.4 | 0.4 | 18 | moderado | 1 |
| 2017-07-22 | 15 | 129 | 27.7 | 13.2 | 30 | 16.3 | 38.5 | 0.5 | 23.9 | alto | 1 |
| 2017-07-23 | 4 | 6 | 17.5 | 10.6 | 53 | 10.9 | 28.1 | 0.5 | 13.5 | moderado | 1 |
| 2017-07-24 | 5 | 26 | 25.4 | 6.4 | 29 | 12.4 | 25.2 | 0 | 18 | moderado | 1 |
| 2017-07-25 | 0 | 0 | 25.4 | 15 | 44 | 13.6 | 25.6 | 0.6 | 15.2 | moderado | 1 |
| 2017-07-26 | 11 | 70 | 28.1 | 13.7 | 43 | 12.6 | 27 | 0 | 19.5 | moderado | 1 |
| 2017-07-27 | 99 | 3,721 | 28.3 | 17.7 | 32 | 16.8 | 43.2 | 0.9 | 28.7 | alto | 1 |
| 2017-07-28 | 35 | 80 | 17.9 | 11.9 | 63 | 19.5 | 46.8 | 0.6 | 10.7 | bajo | 1 |
| 2017-07-29 | 8 | 57 | 18.6 | 10.4 | 40 | 11.5 | 25.9 | 0 | 10.3 | bajo | 1 |
| 2017-07-30 | 16 | 95 | 21.8 | 10.1 | 54 | 12.7 | 32.8 | 7.5 | 14.7 | moderado | 1 |
| 2017-07-31 | 0 | 0 | 22.8 | 11.3 | 33 | 15.3 | 37.4 | 5.8 | 3.3 | muy_bajo | 1 |
| 2017-08-01 | 1 | 1 | 24.7 | 7.3 | 32 | 10.4 | 20.5 | 0 | 8.6 | bajo | 1 |
| 2017-08-02 | 8 | 36 | 27.1 | 10.9 | 26 | 11.7 | 30.2 | 0 | 22.1 | alto | 1 |
| 2017-08-03 | 44 | 684 | 26.7 | 13.6 | 39 | 9 | 24.5 | 1.8 | 19 | moderado | 1 |
| 2017-08-04 | 95 | 524 | 27 | 10.8 | 31 | 7.8 | 11.2 | 0 | 5.5 | bajo | 1 |
| 2017-08-05 | 176 | 4,890 | 25.9 | 11.8 | 41 | 16.4 | 41.4 | 4 | 22.6 | alto | 1 |
| 2017-08-06 | 60 | 106 | 16.7 | 8.6 | 55 | 15.9 | 35.3 | 0.3 | 3.3 | muy_bajo | 1 |
| 2017-08-07 | 28 | 55 | 22 | 4.7 | 38 | 9.5 | 17.6 | 0 | 3.9 | muy_bajo | 1 |
| 2017-08-08 | 80 | 1,445 | 26.7 | 8.6 | 31 | 9.8 | 22.7 | 0 | 14.4 | moderado | 1 |
| 2017-08-09 | 128 | 623 | 28.7 | 9.7 | 28 | 9.3 | 15.8 | 0 | 15.1 | moderado | 1 |
| 2017-08-10 | 82 | 1,002 | 30.6 | 11.8 | 25 | 10 | 17.6 | 0 | 19.6 | moderado | 1 |
| 2017-08-11 | 565 | 30,865 | 32.8 | 13.8 | 20 | 15.7 | 37.8 | 0 | 35.5 | alto | 1 |
| 2017-08-12 | 2,204 | 37,014 | 30.9 | 17.8 | 28 | 20.1 | 47.9 | 0 | 41.8 | muy_alto | 1 |
| 2017-08-13 | 1,650 | 24,788 | 31.3 | 16.2 | 24 | 19.8 | 46.1 | 0 | 38.1 | muy_alto | 1 |
| 2017-08-14 | 1,589 | 11,459 | 29.5 | 17.4 | 31 | 15.1 | 38.5 | 0 | 34.1 | alto | 1 |
| 2017-08-15 | 49 | 153 | 19.1 | 11.3 | 72 | 9 | 26.6 | 11.8 | 0.4 | muy_bajo | 1 |
| 2017-08-16 | 35 | 44 | 25 | 8 | 29 | 10.9 | 23.4 | 0 | 1.9 | muy_bajo | 1 |
| 2017-08-17 | 10 | 114 | 24.7 | 9.9 | 34 | 9.7 | 25.2 | 0 | 8.3 | bajo | 1 |
| 2017-08-18 | 0 | 0 | 24.8 | 12.8 | 38 | 14.4 | 37.4 | 1.5 | 16.8 | moderado | 0 |
It is generated in your browser from this page’s data: one file per fire, aggregated by day and without individual hotspots.
Live widget for your story
It updates itself while the fire is still active and links to this page. Free, with the attribution shown at the bottom.
Sources for this page: NBAC (NRCan), NASA FIRMS (VIIRS), ERA5 (ECMWF/Copernicus C3S) · Open-Meteo.com (CC BY 4.0), GHSL (JRC). Open-Meteo.com · How we build fire pages: methodology
- Burnt area
- 42,337ha
- official perimeter (CWFIS)
- Duration
- 76days
- 3 Jun 2017 – 17 Aug 2017
- Census subdivisions hit
- 1
- municipalities
- Started on
- 3 Jun
- 2017
- Heat detections
- 7,006
- in a single hotspot: 371 MW
- Danger at start
- 15
- Moderate · FWI index
- Average daily power
- 4.2GW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
3 Jun17 Aug
17 Aug 2017
How it evolved, day by day
8 Jun
26 Jul
2 Aug
12 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
69km/h · peak gust
15%lowest humidity
It had gone one day without rain (1 mm or more) when it started. Rain came after the fire: 1.5 mm on 18 Aug.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
Paris boundary: geoBoundaries · Institut national de l'information géographique et forestière (IGN-F) (Etalab Open License 2.0).
Madrid boundary: geoBoundaries · Open Data ESRI, IGN Central Registry of Cartography Area (CC BY 4.0).
Berlin boundary: geoBoundaries · Federal Agency for Cartography and Geodesy (dl-de/by-2-0).
This compares size, not location: both shapes are at the same scale, north up, centred on each other.
What happened to each census subdivision
-
Region 5, Unorganized where it started40,905 ha reached on 8 Jun0.2 %
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 2015Built-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) |
|---|---|---|---|---|---|
| 3 Jun | 19.3 °C | 51 % | 37 km/h | 0.7 mm | Moderate 15 |
| 4 Jun | 23.5 °C | 16 % | 38 km/h | 0.6 mm | High 27 |
| 5 Jun | 21.0 °C | 33 % | 34 km/h | 0.0 mm | High 26 |
| 6 Jun | 23.4 °C | 23 % | 31 km/h | 0.0 mm | High 26 |
| 7 Jun | 25.3 °C | 24 % | 23 km/h | 0.0 mm | High 25 |
| 8 Jun | 27.5 °C | 18 % | 44 km/h | 0.0 mm | Very high 38 |
| 9 Jun | 18.5 °C | 25 % | 40 km/h | 0.0 mm | High 32 |
| 10 Jun | 15.8 °C | 38 % | 69 km/h | 4.4 mm | High 29 |
| 11 Jun | 10.7 °C | 37 % | 53 km/h | 0.0 mm | Low 7 |
| 12 Jun | 16.4 °C | 33 % | 41 km/h | 0.0 mm | Moderate 16 |
| 13 Jun | 17.3 °C | 51 % | 45 km/h | 0.0 mm | Moderate 16 |
| 14 Jun | 17.6 °C | 27 % | 34 km/h | 0.0 mm | Moderate 21 |
| 15 Jun | 15.7 °C | 45 % | 30 km/h | 0.7 mm | Moderate 18 |
| 16 Jun | 22.7 °C | 34 % | 49 km/h | 2.1 mm | Low 9 |
| 17 Jun | 20.7 °C | 34 % | 34 km/h | 3.8 mm | Very low 0 |
| 18 Jun | 22.4 °C | 25 % | 24 km/h | 0.9 mm | Low 5 |
| 19 Jun | 23.2 °C | 30 % | 25 km/h | 0.0 mm | Moderate 14 |
| 20 Jun | 24.8 °C | 24 % | 31 km/h | 0.0 mm | High 30 |
| 21 Jun | 17.8 °C | 46 % | 60 km/h | 0.0 mm | High 36 |
| 22 Jun | 17.5 °C | 25 % | 41 km/h | 0.0 mm | High 25 |
| 23 Jun | 20.7 °C | 28 % | 42 km/h | 0.0 mm | High 26 |
| 24 Jun | 23.3 °C | 20 % | 18 km/h | 0.0 mm | High 21 |
| 25 Jun | 27.4 °C | 15 % | 38 km/h | 0.0 mm | Very high 38 |
| 26 Jun | 27.3 °C | 30 % | 48 km/h | 1.1 mm | Very high 39 |
| 27 Jun | 25.3 °C | 30 % | 47 km/h | 3.7 mm | Low 7 |
| 28 Jun | 23.9 °C | 29 % | 24 km/h | 0.0 mm | Moderate 15 |
| 29 Jun | 23.3 °C | 39 % | 32 km/h | 0.5 mm | High 22 |
| 30 Jun | 25.2 °C | 25 % | 34 km/h | 0.0 mm | High 29 |
| 1 Jul | 24.2 °C | 41 % | 36 km/h | 0.7 mm | High 28 |
| 2 Jul | 27.1 °C | 45 % | 36 km/h | 2.2 mm | Moderate 18 |
| 3 Jul | 22.8 °C | 48 % | 28 km/h | 9.3 mm | Very low 5 |
| 4 Jul | 14.5 °C | 88 % | 44 km/h | 12.5 mm | Very low 0 |
| 5 Jul | 21.4 °C | 71 % | 27 km/h | 14.8 mm | Very low 0 |
| 6 Jul | 25.5 °C | 37 % | 24 km/h | 0.2 mm | Very low 0 |
| 7 Jul | 28.3 °C | 32 % | 30 km/h | 0.0 mm | Low 7 |
| 8 Jul | 29.6 °C | 32 % | 18 km/h | 0.0 mm | Low 10 |
| 9 Jul | 29.2 °C | 34 % | 21 km/h | 0.0 mm | Moderate 15 |
| 10 Jul | 25.9 °C | 47 % | 29 km/h | 0.9 mm | Moderate 14 |
| 11 Jul | 25.2 °C | 48 % | 36 km/h | 2.3 mm | Low 8 |
| 12 Jul | 24.4 °C | 42 % | 21 km/h | 0.3 mm | Very low 4 |
| 13 Jul | 23.3 °C | 48 % | 42 km/h | 0.3 mm | Low 9 |
| 14 Jul | 22.2 °C | 31 % | 18 km/h | 0.0 mm | Low 10 |
| 15 Jul | 25.8 °C | 40 % | 36 km/h | 0.0 mm | Moderate 19 |
| 16 Jul | 22.2 °C | 54 % | 41 km/h | 3.2 mm | Moderate 17 |
| 17 Jul | 13.1 °C | 46 % | 48 km/h | 0.3 mm | Very low 5 |
| 18 Jul | 19.5 °C | 28 % | 38 km/h | 0.0 mm | Moderate 11 |
| 19 Jul | 19.4 °C | 33 % | 38 km/h | 0.0 mm | Moderate 17 |
| 20 Jul | 22.7 °C | 23 % | 31 km/h | 0.0 mm | High 22 |
| 21 Jul | 25.0 °C | 40 % | 32 km/h | 0.4 mm | Moderate 18 |
| 22 Jul | 27.7 °C | 30 % | 38 km/h | 0.5 mm | High 24 |
| 23 Jul | 17.5 °C | 53 % | 28 km/h | 0.5 mm | Moderate 14 |
| 24 Jul | 25.4 °C | 29 % | 25 km/h | 0.0 mm | Moderate 18 |
| 25 Jul | 25.4 °C | 44 % | 26 km/h | 0.6 mm | Moderate 15 |
| 26 Jul | 28.1 °C | 43 % | 27 km/h | 0.0 mm | Moderate 20 |
| 27 Jul | 28.3 °C | 32 % | 43 km/h | 0.9 mm | High 29 |
| 28 Jul | 17.9 °C | 63 % | 47 km/h | 0.6 mm | Low 11 |
| 29 Jul | 18.6 °C | 40 % | 26 km/h | 0.0 mm | Low 10 |
| 30 Jul | 21.8 °C | 54 % | 33 km/h | 7.5 mm | Moderate 15 |
| 31 Jul | 22.8 °C | 33 % | 37 km/h | 5.8 mm | Very low 3 |
| 1 Aug | 24.7 °C | 32 % | 20 km/h | 0.0 mm | Low 9 |
| 2 Aug | 27.1 °C | 26 % | 30 km/h | 0.0 mm | High 22 |
| 3 Aug | 26.7 °C | 39 % | 24 km/h | 1.8 mm | Moderate 19 |
| 4 Aug | 27.0 °C | 31 % | 11 km/h | 0.0 mm | Low 6 |
| 5 Aug | 25.9 °C | 41 % | 41 km/h | 4.0 mm | High 23 |
| 6 Aug | 16.7 °C | 55 % | 35 km/h | 0.3 mm | Very low 3 |
| 7 Aug | 22.0 °C | 38 % | 18 km/h | 0.0 mm | Very low 4 |
| 8 Aug | 26.7 °C | 31 % | 23 km/h | 0.0 mm | Moderate 14 |
| 9 Aug | 28.7 °C | 28 % | 16 km/h | 0.0 mm | Moderate 15 |
| 10 Aug | 30.6 °C | 25 % | 18 km/h | 0.0 mm | Moderate 20 |
| 11 Aug | 32.8 °C | 20 % | 38 km/h | 0.0 mm | High 36 |
| 12 Aug | 30.9 °C | 28 % | 48 km/h | 0.0 mm | Very high 42 |
| 13 Aug | 31.3 °C | 24 % | 46 km/h | 0.0 mm | Very high 38 |
| 14 Aug | 29.5 °C | 31 % | 38 km/h | 0.0 mm | High 34 |
| 15 Aug | 19.1 °C | 72 % | 27 km/h | 11.8 mm | Very low 0 |
| 16 Aug | 25.0 °C | 29 % | 23 km/h | 0.0 mm | Very low 2 |
| 17 Aug | 24.7 °C | 34 % | 25 km/h | 0.0 mm | Low 8 |
| 18 Aug after | 24.8 °C | 38 % | 37 km/h | 1.5 mm | Moderate 17 |
Its twins: fires that started in the same weather
It started with an FWI of 15.4, a minimum humidity of 51% and 1 day without rain. Fires in the area that started in weather like this since 2016: 14.
FWI at the start
15.4
Minimum humidity
51 %
Days without rain
1
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Region 5, Unorganized fire, June 2017
42,337 ha
76 days
FWI 15.4
Min. humidity 51 %
Improvement District No. 24 W* fire, July 2023
150,129 ha
111 days
FWI 20.3
Min. humidity 51 %
82 km away, in 2023
First rain (1 mm or more) after it ended: 2.8 mm on 21 Oct.
Region 6, Unorganized fire, August 2023
50,599 ha
54 days
FWI 17.6
Min. humidity 48 %
197 km away, in 2023
First rain (1 mm or more) after it ended: 3.9 mm on 26 Sept.
Improvement District No. 24 W* fire, June 2019
22,475 ha
26 days
FWI 14.2
Min. humidity 46 %
59 km away, in 2019
First rain (1 mm or more) after it ended: 6.6 mm on 26 Jul.
Improvement District No. 24 W* fire, September 2023
6,485 ha
38 days
FWI 8.3
Min. humidity 48 %
122 km away, in 2023
First rain (1 mm or more) after it ended: 4.0 mm on 18 Oct.
Wood Buffalo fire, June 2022
45,024 ha
100 days
FWI 3.5
Min. humidity 51 %
203 km away, in 2022
First rain (1 mm or more) after it ended: none in the following ten days.
What happened to them
Fires in the area that started in similar weather: 14. With fewer than 15 we give no figures: they would be more noise than signal.
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
1.5 mmfirst rain
18 Augthe day after it ended
69km/h · max. gust
It was considered over on 17 Aug, and on 18 Aug 1.5 mm fell. We do not know whether the rain or the firefighters put it out.
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.
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
↔
Before · 27 May 2017
After · 24 Aug 2017
Sentinel-2 did not pass over on that day. Try another date, or use false colour, which is daily.
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 · 7,006Every 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 time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 14,428 haRegion 5, Unorganized22 May 2026 · 18 days · 12 km away
- 2,404 haRegion 5, Unorganized26 July 2017 · 22 days · 18 km away
- 22,473 haRegion 5, Unorganized24 June 2026 · 11 days · 20 km away
- 11,185 haRegion 5, Unorganized4 July 2023 · 91 days · 20 km away
- 13,976 haRegion 5, Unorganized22 May 2026 · 9 days · 25 km away
- 1,843 haRegion 5, Unorganized23 September 2025 · 11 days · 25 km away
Frequently asked questions
- How long did the Region 5, Unorganized fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 3 June 2017 to 17 August 2017 (76 days). The perimeter dates it from 3 June 2017 to 16 August 2017.
- How much area did it burn?
- The official perimeter mapped by Canada’s CWFIS (Natural Resources Canada) is 42,337 hectares (423.4 km²). Other tallies, such as those of provincial agencies, may give slightly different figures.
- Which census subdivisions burned?
- The fire only entered Region 5, Unorganized (40,905 ha, 0.2 %).
- What was the weather like?
- During the fire the temperature reached 32.8 °C, humidity dropped to 15 % and gusts hit 69 km/h. The fire danger index (FWI) reached 42, class Very 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.
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
- CIFFC · Canadian Interagency Forest Fire Centre ↗
- CWFIS · Canadian Wildland Fire Information System ↗
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 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
How we know this
- Perimeter: NBAC (Natural Resources Canada), official; 2 polygons grouped in this page.
- Dates adjusted with the VIIRS detections inside the perimeter, which said 3 June 2017 to 16 August 2017. 7,006 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.
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.