Burned area
satellite only481,540ha
Union of 2 NBAC (NRCan) perimeters: overlapping areas count once.
- Source
- NBAC (NRCan)
- Date
- 10 May 2023 – 21 Oct 2023
+− cross-check
No official record is matched to this page to compare it with.
CA · Canada · –
Peace River B fire, 10 May 2023 Peace River B
Out · last detection 21 Oct 2023, 11:44 UTC
The fire started on 10 May 2023 in Peace River B, Canada, and satellites saw it burning for 165 days. Canada’s CWFIS (Natural Resources Canada) mapped an official burnt perimeter of 481,540 hectares from satellite imagery, spread across a single census subdivision.
It is the 2th largest in British Columbia since 2016 (of 343 with a page). Number 4 in Canada in 2023, of 489.
Use this data
Compare with…
Use this data
Fire page data · version 2026-10-25matches 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 only165days
10 May 2023 to 21 Oct 2023: first and last day with fire on the page.
- Source
- NBAC (NRCan) · NASA FIRMS · VIIRS
- Date
- last detection: 21 Oct 2023, 11:44 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 only10 May 2023
First day with fire seen by the satellites or the perimeter.
- Source
- NBAC (NRCan) · NASA FIRMS · VIIRS
- Date
- 10 May 2023
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only47,551
VIIRS detections at 375 m. Most intense hotspot: 1,446 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP + NOAA-20)
- Date
- 10 May 2023 – 21 Oct 2023
+− 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 only131,562MW
Total radiative power on 8 June 2023; hotspots that day: 4,971.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 8 Jun 2023
+− 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
model19.1FWI · moderate
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 13.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 10 May 2023, 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
model31.4°C · 27% RH
High of 31.4 °C and minimum humidity of 27% on 28 August 2023; gusts of 64 km/h on 15 September 2023.
- Source
- weather model at the fire’s grid cell
- Date
- 10 May 2023 – 21 Oct 2023
- 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
-
logLast day with fire: 20 October 2023 → 21 October 2023.
-
logStart date: 12 May 2023 → 10 May 2023.
-
· reconstructed GHSLPopulation and built-up area computed
What was saved on 25 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
- 481,540 ha
- Dates
- 10 May 2023 – 21 Oct 2023
- Name
- Peace River B
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/peace-river-b-2023-05-4?v=2026-10-25A 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 peace-river-b-2023-05-4.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023-05-10 | 1 | 1 | 22.8 | 4.2 | 18 | 12.4 | 25.2 | 1 | 19.1 | moderado | 1 |
| 2023-05-11 | 1 | 1 | 22.1 | 6.9 | 22 | 17 | 42.5 | 1 | 17.9 | moderado | 1 |
| 2023-05-12 | 54 | 3,975 | 24.9 | 7.6 | 16 | 18.9 | 47.5 | 0 | 26.9 | alto | 1 |
| 2023-05-13 | 755 | 8,784 | 25.3 | 12.1 | 20 | 20.8 | 47.5 | 0 | 28 | alto | 1 |
| 2023-05-14 | 889 | 15,406 | 28.4 | 9.6 | 20 | 11.5 | 21.2 | 0 | 17.4 | moderado | 1 |
| 2023-05-15 | 2,407 | 62,548 | 21.8 | 10.9 | 33 | 22.3 | 50 | 0 | 28.9 | alto | 1 |
| 2023-05-16 | 698 | 4,799 | 20.3 | 8.1 | 22 | 10.4 | 24.1 | 0 | 20.1 | moderado | 1 |
| 2023-05-17 | 1,595 | 20,665 | 23.6 | 6.3 | 21 | 14.3 | 22 | 0 | 20.9 | moderado | 1 |
| 2023-05-18 | 3,128 | 115,966 | 24.3 | 8 | 16 | 16.7 | 42.8 | 0 | 32.2 | alto | 1 |
| 2023-05-19 | 1,667 | 4,038 | 21.4 | 8.8 | 39 | 16.1 | 41 | 0 | 29.9 | alto | 1 |
| 2023-05-20 | 233 | 10,105 | 24.2 | 7 | 25 | 14.5 | 31.7 | 1.5 | 9.1 | bajo | 1 |
| 2023-05-21 | 712 | 3,053 | 22.5 | 8.6 | 34 | 12.1 | 30.6 | 3.3 | 17.2 | moderado | 1 |
| 2023-05-22 | 0 | 0 | 11.9 | 5.6 | 77 | 20.6 | 47.2 | 18.3 | 0 | muy_bajo | 1 |
| 2023-05-23 | 0 | 0 | 13.7 | 5.7 | 42 | 12.6 | 32.4 | 0.3 | 0.1 | muy_bajo | 1 |
| 2023-05-24 | 0 | 0 | 18.6 | 5.2 | 33 | 15.2 | 39.2 | 0 | 3.5 | muy_bajo | 1 |
| 2023-05-25 | 0 | 0 | 21.4 | 8.3 | 32 | 14.9 | 25.6 | 0.5 | 4.5 | muy_bajo | 1 |
| 2023-05-26 | 14 | 705 | 25.8 | 9 | 17 | 21.3 | 45 | 0 | 22.5 | alto | 1 |
| 2023-05-27 | 93 | 6,863 | 24.2 | 10.3 | 14 | 16.2 | 38.9 | 0 | 24.4 | alto | 1 |
| 2023-05-28 | 185 | 542 | 19 | 11.1 | 29 | 13 | 31.7 | 1.4 | 11.9 | moderado | 1 |
| 2023-05-29 | 382 | 24,833 | 16.6 | 7.9 | 14 | 19.8 | 43.6 | 0.2 | 17.6 | moderado | 1 |
| 2023-05-30 | 531 | 10,252 | 17.9 | 3 | 14 | 15.4 | 38.2 | 0.1 | 21.9 | alto | 1 |
| 2023-05-31 | 102 | 468 | 16.6 | 5 | 19 | 18.6 | 42.8 | 0 | 22.3 | alto | 1 |
| 2023-06-01 | 570 | 13,912 | 19.5 | 2.8 | 12 | 11.9 | 31 | 0 | 21.8 | alto | 1 |
| 2023-06-02 | 1,971 | 49,221 | 22.3 | 2.4 | 16 | 15.6 | 40 | 0 | 29.8 | alto | 1 |
| 2023-06-03 | 52 | 555 | 24.7 | 10.4 | 24 | 13.7 | 36 | 1.3 | 16.5 | moderado | 1 |
| 2023-06-04 | 145 | 2,769 | 20 | 10.3 | 20 | 23.3 | 51.1 | 13.4 | 0.1 | muy_bajo | 1 |
| 2023-06-05 | 256 | 3,436 | 18.4 | 4.4 | 18 | 16.4 | 40.3 | 0 | 5.6 | bajo | 1 |
| 2023-06-06 | 1,449 | 27,472 | 20.3 | 6.4 | 22 | 22 | 54.7 | 0 | 16.9 | moderado | 1 |
| 2023-06-07 | 1,987 | 23,607 | 23.3 | 7.2 | 22 | 15.6 | 36.4 | 0 | 18.6 | moderado | 1 |
| 2023-06-08 | 4,971 | 131,562 | 26.4 | 8.4 | 25 | 15 | 35.3 | 0 | 20.4 | moderado | 1 |
| 2023-06-09 | 4,515 | 58,441 | 26.9 | 12.2 | 35 | 15.2 | 40.3 | 1.6 | 22.4 | alto | 1 |
| 2023-06-10 | 0 | 0 | 20 | 13.8 | 44 | 15.7 | 40.7 | 1 | 3.6 | muy_bajo | 1 |
| 2023-06-11 | 1,114 | 45,100 | 24.3 | 12.9 | 23 | 13.9 | 36 | 0 | 11.8 | moderado | 1 |
| 2023-06-12 | 2,179 | 20,371 | 21.6 | 9.4 | 41 | 14.1 | 30.6 | 1.1 | 14.2 | moderado | 1 |
| 2023-06-13 | 442 | 1,160 | 19.1 | 10.2 | 29 | 15.1 | 40.7 | 0.4 | 11.3 | moderado | 1 |
| 2023-06-14 | 160 | 4,222 | 16.9 | 7.2 | 41 | 15.1 | 41.8 | 0.8 | 14 | moderado | 1 |
| 2023-06-15 | 716 | 3,643 | 21.2 | 5.2 | 21 | 19.3 | 38.9 | 0.5 | 7 | bajo | 1 |
| 2023-06-16 | 132 | 7,931 | 19.2 | 10.6 | 31 | 18.9 | 40.3 | 3.5 | 6.9 | bajo | 1 |
| 2023-06-17 | 143 | 322 | 12.9 | 7.6 | 46 | 14.8 | 40.3 | 3.2 | 1.4 | muy_bajo | 1 |
| 2023-06-18 | 6 | 7 | 14.9 | 5.1 | 59 | 18 | 51.1 | 5.7 | 0.6 | muy_bajo | 1 |
| 2023-06-19 | 41 | 580 | 17.9 | 7.8 | 26 | 27.7 | 58 | 0.1 | 4.8 | muy_bajo | 1 |
| 2023-06-20 | 153 | 2,542 | 20.5 | 4.6 | 28 | 9.7 | 28.8 | 0 | 9.3 | bajo | 1 |
| 2023-06-21 | 461 | 9,529 | 24.5 | 7.2 | 23 | 9.3 | 21.6 | 0 | 14.9 | moderado | 1 |
| 2023-06-22 | 160 | 571 | 25.1 | 11.8 | 32 | 10.2 | 31.7 | 1.5 | 17.9 | moderado | 1 |
| 2023-06-23 | 266 | 1,226 | 27.9 | 11.8 | 24 | 10.4 | 20.9 | 0.4 | 7 | bajo | 1 |
| 2023-06-24 | 334 | 5,020 | 21.6 | 13.1 | 49 | 19.9 | 44.6 | 1.9 | 7.6 | bajo | 1 |
| 2023-06-25 | 124 | 2,752 | 22.9 | 10.7 | 49 | 11.1 | 24.5 | 1.8 | 5.8 | bajo | 1 |
| 2023-06-26 | 181 | 6,697 | 25.8 | 11.1 | 31 | 9.9 | 29.2 | 0.1 | 9.5 | bajo | 1 |
| 2023-06-27 | 262 | 1,663 | 26.5 | 14.8 | 35 | 8.6 | 23.4 | 3.8 | 12.5 | moderado | 1 |
| 2023-06-28 | 103 | 502 | 26.6 | 13 | 40 | 11.7 | 28.8 | 3.8 | 3.5 | muy_bajo | 1 |
| 2023-06-29 | 172 | 6,542 | 23.3 | 15.1 | 33 | 16.7 | 42.5 | 0.5 | 7.5 | bajo | 1 |
| 2023-06-30 | 323 | 3,409 | 22 | 12.3 | 25 | 16.3 | 48.2 | 0.6 | 19.1 | moderado | 1 |
| 2023-07-01 | 97 | 180 | 19.6 | 8.6 | 32 | 11.5 | 25.9 | 1.8 | 14.1 | moderado | 1 |
| 2023-07-02 | 33 | 662 | 16.2 | 9.9 | 51 | 20.1 | 48.6 | 4.8 | 8.7 | bajo | 1 |
| 2023-07-03 | 0 | 0 | 19 | 10.1 | 50 | 18.4 | 36.7 | 4.8 | 0.3 | muy_bajo | 1 |
| 2023-07-04 | 196 | 7,442 | 26.2 | 7.1 | 24 | 10 | 20.5 | 0 | 2.3 | muy_bajo | 1 |
| 2023-07-05 | 508 | 2,307 | 27.9 | 11.2 | 28 | 10.9 | 29.5 | 0.4 | 11.3 | moderado | 1 |
| 2023-07-06 | 191 | 587 | 20.6 | 12.7 | 56 | 9.5 | 28.4 | 3.6 | 7.2 | bajo | 1 |
| 2023-07-07 | 175 | 3,719 | 27.2 | 11.4 | 26 | 14.1 | 27.7 | 0 | 4.2 | muy_bajo | 1 |
| 2023-07-08 | 739 | 10,081 | 31 | 12.8 | 26 | 14.2 | 26.6 | 0 | 12.8 | moderado | 1 |
| 2023-07-09 | 1,366 | 7,113 | 30.2 | 14.7 | 29 | 11 | 34.9 | 2.7 | 16.6 | moderado | 1 |
| 2023-07-10 | 146 | 1,370 | 23.9 | 14.2 | 52 | 10.3 | 29.5 | 2.3 | 2.4 | muy_bajo | 1 |
| 2023-07-11 | 177 | 469 | 24.7 | 11.8 | 42 | 8.9 | 27.7 | 7.9 | 0.8 | muy_bajo | 1 |
| 2023-07-12 | 26 | 49 | 24 | 11.2 | 52 | 8.4 | 24.1 | 4.5 | 0.4 | muy_bajo | 1 |
| 2023-07-13 | 23 | 70 | 21.5 | 14.1 | 65 | 9.4 | 31.7 | 4.9 | 0.2 | muy_bajo | 1 |
| 2023-07-14 | 25 | 102 | 25 | 11.6 | 41 | 8.2 | 22.3 | 0 | 0.6 | muy_bajo | 1 |
| 2023-07-15 | 42 | 157 | 22.5 | 10.9 | 46 | 8.5 | 22 | 8.1 | 2.5 | muy_bajo | 1 |
| 2023-07-16 | 5 | 13 | 24.9 | 11.5 | 36 | 12.9 | 27 | 2 | 0.4 | muy_bajo | 1 |
| 2023-07-17 | 0 | 0 | 20.1 | 11.9 | 53 | 10.9 | 20.5 | 9.4 | 0.1 | muy_bajo | 1 |
| 2023-07-18 | 0 | 0 | 18.7 | 10.2 | 66 | 10 | 20.5 | 4 | 0 | muy_bajo | 1 |
| 2023-07-19 | 0 | 0 | 22.6 | 10.8 | 58 | 7.5 | 25.2 | 0.2 | 0.1 | muy_bajo | 1 |
| 2023-07-20 | 6 | 86 | 26.9 | 10.7 | 32 | 7.7 | 16.9 | 0 | 0.6 | muy_bajo | 1 |
| 2023-07-21 | 21 | 359 | 27.7 | 12.1 | 33 | 9 | 20.5 | 2.8 | 5 | muy_bajo | 1 |
| 2023-07-22 | 6 | 15 | 22.6 | 12.9 | 50 | 13.4 | 35.6 | 1 | 0.7 | muy_bajo | 1 |
| 2023-07-23 | 72 | 1,209 | 23.9 | 10.8 | 25 | 13.7 | 36 | 0 | 6.7 | bajo | 1 |
| 2023-07-24 | 35 | 149 | 19.1 | 11.6 | 42 | 8.4 | 20.9 | 0.4 | 5.2 | bajo | 1 |
| 2023-07-25 | 0 | 0 | 17.1 | 10.6 | 72 | 15.9 | 40 | 16.3 | 0 | muy_bajo | 1 |
| 2023-07-26 | 0 | 0 | 14.5 | 12.1 | 93 | 21.2 | 39.6 | 25.2 | 0 | muy_bajo | 1 |
| 2023-07-27 | 1 | 4 | 19 | 11.2 | 58 | 15.4 | 31.3 | 1.3 | 0 | muy_bajo | 1 |
| 2023-07-28 | 1 | 9 | 23.1 | 9.4 | 30 | 14.4 | 33.1 | 0 | 0.6 | muy_bajo | 1 |
| 2023-07-29 | 9 | 56 | 25.1 | 8.9 | 25 | 14.4 | 38.5 | 0 | 4.7 | muy_bajo | 1 |
| 2023-07-30 | 57 | 255 | 25.3 | 10.2 | 29 | 12.6 | 23 | 0.3 | 6.1 | bajo | 1 |
| 2023-07-31 | 0 | 0 | 17.1 | 12.7 | 74 | 12.6 | 27.7 | 13.8 | 0 | muy_bajo | 1 |
| 2023-08-01 | 0 | 0 | 18.1 | 11.5 | 55 | 9.5 | 23.8 | 5.2 | 0 | muy_bajo | 1 |
| 2023-08-02 | 0 | 0 | 17.3 | 8.3 | 65 | 6.6 | 23 | 7.2 | 0 | muy_bajo | 1 |
| 2023-08-03 | 0 | 0 | 20.6 | 8.7 | 47 | 9.1 | 26.6 | 0.8 | 0.1 | muy_bajo | 1 |
| 2023-08-04 | 0 | 0 | 22.5 | 7.5 | 37 | 11.6 | 33.1 | 0.2 | 0.7 | muy_bajo | 1 |
| 2023-08-05 | 0 | 0 | 26.6 | 10.4 | 30 | 10.8 | 25.2 | 0 | 3.9 | muy_bajo | 1 |
| 2023-08-06 | 0 | 0 | 27.2 | 11.3 | 33 | 8 | 21.6 | 2.3 | 4.8 | muy_bajo | 1 |
| 2023-08-07 | 0 | 0 | 26.5 | 11.6 | 40 | 14.6 | 30.6 | 6.6 | 1.4 | muy_bajo | 1 |
| 2023-08-08 | 0 | 0 | 18.9 | 13.8 | 58 | 15.7 | 31.7 | 1.3 | 0.1 | muy_bajo | 1 |
| 2023-08-09 | 0 | 0 | 21.6 | 12.5 | 49 | 12.8 | 25.2 | 5.8 | 0.4 | muy_bajo | 1 |
| 2023-08-10 | 0 | 0 | 17.1 | 11.8 | 62 | 15.2 | 44.6 | 2.2 | 0.2 | muy_bajo | 1 |
| 2023-08-11 | 0 | 0 | 20.7 | 9.5 | 49 | 9.1 | 21.2 | 3.9 | 0.5 | muy_bajo | 1 |
| 2023-08-12 | 0 | 0 | 23 | 9 | 31 | 17.3 | 37.4 | 0 | 0.7 | muy_bajo | 1 |
| 2023-08-13 | 0 | 0 | 26.1 | 14.5 | 31 | 22.2 | 52.2 | 0.1 | 12.1 | moderado | 1 |
| 2023-08-14 | 0 | 0 | 22.4 | 12 | 26 | 12.6 | 32.8 | 0.1 | 10.3 | bajo | 1 |
| 2023-08-15 | 0 | 0 | 22.8 | 10.6 | 40 | 16 | 47.9 | 6.4 | 8.8 | bajo | 1 |
| 2023-08-16 | 0 | 0 | 25.2 | 8.8 | 31 | 17 | 37.4 | 0 | 0.9 | muy_bajo | 1 |
| 2023-08-17 | 0 | 0 | 19.2 | 10.4 | 45 | 16.2 | 36.7 | 6.5 | 3 | muy_bajo | 1 |
| 2023-08-18 | 0 | 0 | 12.6 | 5.3 | 53 | 15.9 | 44.6 | 2.2 | 0.1 | muy_bajo | 1 |
| 2023-08-19 | 0 | 0 | 21.5 | 5.1 | 33 | 10.8 | 24.8 | 0 | 0.9 | muy_bajo | 1 |
| 2023-08-20 | 0 | 0 | 23.6 | 6.2 | 28 | 9.6 | 20.5 | 0 | 4.5 | muy_bajo | 1 |
| 2023-08-21 | 0 | 0 | 23.5 | 6 | 26 | 12.6 | 21.6 | 0 | 8.7 | bajo | 1 |
| 2023-08-22 | 2 | 6 | 23.5 | 7.3 | 29 | 12.3 | 20.9 | 0 | 8.8 | bajo | 1 |
| 2023-08-23 | 0 | 0 | 20.2 | 8.1 | 45 | 14.2 | 36.7 | 0.3 | 12.1 | moderado | 1 |
| 2023-08-24 | 1 | 5 | 23.8 | 7.9 | 32 | 15.6 | 27.7 | 0 | 9.6 | bajo | 1 |
| 2023-08-25 | 6 | 316 | 27.5 | 9.1 | 23 | 14.6 | 33.5 | 0 | 15.3 | moderado | 1 |
| 2023-08-26 | 29 | 82 | 26.2 | 10.9 | 37 | 12.8 | 31.7 | 0 | 17.2 | moderado | 1 |
| 2023-08-27 | 74 | 1,025 | 29.7 | 12.6 | 30 | 12 | 22.7 | 0 | 14.7 | moderado | 1 |
| 2023-08-28 | 116 | 997 | 31.4 | 13.6 | 27 | 12.5 | 18.7 | 0 | 15.1 | moderado | 1 |
| 2023-08-29 | 85 | 220 | 26.1 | 13.1 | 36 | 11.5 | 25.9 | 0 | 15.7 | moderado | 1 |
| 2023-08-30 | 25 | 39 | 24.3 | 13.2 | 44 | 10.4 | 23.8 | 2.9 | 14.3 | moderado | 1 |
| 2023-08-31 | 0 | 0 | 21.8 | 11.7 | 33 | 12.3 | 32.8 | 0.8 | 3.8 | muy_bajo | 1 |
| 2023-09-01 | 61 | 765 | 26.6 | 8.3 | 24 | 18.6 | 51.1 | 0 | 18.8 | moderado | 1 |
| 2023-09-02 | 215 | 1,214 | 20.3 | 11.6 | 24 | 17.2 | 39.6 | 0 | 22.9 | alto | 1 |
| 2023-09-03 | 75 | 138 | 12.2 | 3.2 | 52 | 18.4 | 44.6 | 4.2 | 10.4 | bajo | 1 |
| 2023-09-04 | 4 | 16 | 17 | 1.1 | 30 | 14.1 | 29.5 | 0 | 1.6 | muy_bajo | 1 |
| 2023-09-05 | 0 | 0 | 11.6 | 4.2 | 58 | 13.5 | 27.4 | 1 | 1.9 | muy_bajo | 1 |
| 2023-09-06 | 1 | 1 | 16.3 | 3.7 | 40 | 8.9 | 24.5 | 0.9 | 4 | muy_bajo | 1 |
| 2023-09-07 | 1 | 1 | 18.6 | 4.5 | 31 | 11.3 | 23.4 | 0 | 7.1 | bajo | 1 |
| 2023-09-08 | 3 | 6 | 19.6 | 4.6 | 29 | 10.1 | 17.3 | 0 | 9.4 | bajo | 1 |
| 2023-09-09 | 46 | 324 | 21 | 2.9 | 28 | 15.7 | 36.4 | 0 | 17.1 | moderado | 1 |
| 2023-09-10 | 51 | 196 | 23.1 | 4.8 | 30 | 16.4 | 36.4 | 0 | 17.5 | moderado | 1 |
| 2023-09-11 | 91 | 2,402 | 19.5 | 9.2 | 31 | 21.7 | 49.3 | 0 | 25.2 | alto | 1 |
| 2023-09-12 | 314 | 5,215 | 20.6 | 8.3 | 31 | 14.8 | 36.7 | 0 | 19.3 | moderado | 1 |
| 2023-09-13 | 144 | 321 | 16.6 | 7.4 | 33 | 15.8 | 42.8 | 0.5 | 19.9 | moderado | 1 |
| 2023-09-14 | 21 | 62 | 19.7 | 2.2 | 24 | 17 | 36.4 | 0 | 21.7 | alto | 1 |
| 2023-09-15 | 172 | 2,104 | 23.6 | 8.5 | 20 | 30.3 | 64.4 | 0 | 32.6 | alto | 1 |
| 2023-09-16 | 363 | 1,162 | 18.8 | 6.3 | 27 | 14.3 | 30.6 | 0 | 19.9 | moderado | 1 |
| 2023-09-17 | 255 | 792 | 18.6 | 6 | 34 | 24 | 56.2 | 0 | 30.1 | alto | 1 |
| 2023-09-18 | 125 | 715 | 15.9 | 7.2 | 32 | 18.8 | 43.2 | 0 | 25.2 | alto | 1 |
| 2023-09-19 | 61 | 129 | 14.2 | 4.2 | 38 | 13.2 | 24.5 | 0.6 | 16.9 | moderado | 1 |
| 2023-09-20 | 38 | 247 | 17.3 | 1 | 28 | 15.1 | 32.4 | 0 | 14.7 | moderado | 1 |
| 2023-09-21 | 109 | 2,335 | 21.4 | 7.4 | 36 | 17.3 | 41.8 | 0 | 25 | alto | 1 |
| 2023-09-22 | 929 | 50,040 | 23.7 | 10 | 20 | 24.5 | 51.5 | 0 | 35.2 | alto | 1 |
| 2023-09-23 | 3,276 | 27,183 | 17.3 | 6.4 | 35 | 13.7 | 34.2 | 0 | 16.7 | moderado | 1 |
| 2023-09-24 | 0 | 0 | 10.5 | 2.7 | 65 | 7.8 | 19.4 | 2.8 | 3.3 | muy_bajo | 1 |
| 2023-09-25 | 1 | 1 | 9.2 | 0.2 | 66 | 9.3 | 27.4 | 5.2 | 4.2 | muy_bajo | 1 |
| 2023-09-26 | 1 | 2 | 15.6 | 4.3 | 46 | 18.2 | 42.8 | 0.1 | 0.8 | muy_bajo | 1 |
| 2023-09-27 | 1 | 1 | 14.3 | 6.3 | 53 | 11.9 | 23.4 | 2 | 2 | muy_bajo | 1 |
| 2023-09-28 | 0 | 0 | 8.4 | 6.4 | 97 | 12 | 27.7 | 5.2 | 0 | muy_bajo | 1 |
| 2023-09-29 | 0 | 0 | 8.9 | 4.3 | 71 | 8.3 | 13.7 | 2.6 | 0 | muy_bajo | 1 |
| 2023-09-30 | 1 | 1 | 9.3 | 4.6 | 69 | 14.1 | 36.7 | 0.5 | 0.1 | muy_bajo | 1 |
| 2023-10-01 | 0 | 0 | 13.1 | 4.3 | 47 | 13.4 | 35.6 | 0 | 1.6 | muy_bajo | 1 |
| 2023-10-02 | 0 | 0 | 12.3 | 2.4 | 48 | 8.7 | 24.5 | 0 | 1.6 | muy_bajo | 1 |
| 2023-10-03 | 0 | 0 | 13.6 | 1.6 | 38 | 17.3 | 41 | 0 | 5.8 | bajo | 1 |
| 2023-10-04 | 0 | 0 | 8.6 | -0.8 | 31 | 17.9 | 44.6 | 0.6 | 11.1 | bajo | 1 |
| 2023-10-05 | 0 | 0 | 6.9 | -5 | 37 | 17.3 | 41.8 | 0 | 8.9 | bajo | 1 |
| 2023-10-06 | 0 | 0 | 18.7 | 5.6 | 34 | 22.9 | 42.8 | 0 | 10.7 | bajo | 1 |
| 2023-10-07 | 0 | 0 | 20.5 | 9.5 | 30 | 18.4 | 39.2 | 0 | 12.5 | moderado | 1 |
| 2023-10-08 | 17 | 138 | 21.6 | 9 | 27 | 19.9 | 46.1 | 0 | 21.3 | alto | 1 |
| 2023-10-09 | 18 | 21 | 17.5 | 6.9 | 36 | 21.8 | 50.4 | 0 | 20.3 | moderado | 1 |
| 2023-10-10 | 0 | 0 | 11.6 | 5.8 | 52 | 12.9 | 24.8 | 1.7 | 11.3 | moderado | 1 |
| 2023-10-11 | 0 | 0 | 14 | 1.7 | 41 | 8.7 | 12.2 | 0 | 1.9 | muy_bajo | 1 |
| 2023-10-12 | 1 | 47 | 15.3 | 4.4 | 43 | 15.5 | 33.1 | 0.1 | 4.1 | muy_bajo | 1 |
| 2023-10-13 | 2 | 3 | 11.2 | 2.5 | 65 | 16.4 | 35.3 | 0 | 6.2 | bajo | 1 |
| 2023-10-14 | 1 | 1 | 9 | 3.2 | 71 | 18.8 | 43.2 | 0 | 7.4 | bajo | 1 |
| 2023-10-15 | 0 | 0 | 14.4 | 3.6 | 48 | 12.9 | 26.6 | 0 | 5.7 | bajo | 1 |
| 2023-10-16 | 0 | 0 | 11.5 | -0.3 | 56 | 9.7 | 17.6 | 0.7 | 5.1 | muy_bajo | 1 |
| 2023-10-17 | 0 | 0 | 11.6 | 4.3 | 57 | 19.9 | 45.7 | 2.7 | 1.3 | muy_bajo | 1 |
| 2023-10-18 | 0 | 0 | 14 | 4.7 | 45 | 19.6 | 46.1 | 1.6 | 3.1 | muy_bajo | 1 |
| 2023-10-19 | 1 | 6 | 15.2 | 6.6 | 24 | 20.5 | 45.7 | 0 | 6.2 | bajo | 1 |
| 2023-10-20 | 21 | 441 | 11.5 | 1.5 | 32 | 14.6 | 28.8 | 0 | 6.2 | bajo | 1 |
| 2023-10-21 | 1 | 1 | 1.3 | -5.8 | 66 | 14.9 | 31.7 | 1.6 | 4.8 | muy_bajo | 1 |
| 2023-10-22 | 0 | 0 | -5.2 | -10.4 | 44 | 15.7 | 38.2 | 2.2 | 0.8 | muy_bajo | 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
- 481,540ha
- official perimeter (CWFIS)
- Duration
- 165days
- 10 May 2023 – 21 Oct 2023
- Census subdivisions hit
- 1
- municipalities
- Started on
- 10 May
- 2023
- Heat detections
- 47,551
- in a single hotspot: 1,446 MW
- Danger at start
- 19
- Moderate · FWI index
- Average daily power
- 7.6GW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
10 May21 Oct
21 Oct 2023
How it evolved, day by day
10 May
8 Jun
30 Jun
29 Jul
15 Sept
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
31°high
64km/h · peak gust
12%lowest humidity
It had gone 13 days without rain (1 mm or more) when it started. Rain came after the fire: 2.2 mm on 22 Oct.
This area had burned before
1% of the perimeter overlaps earlier fires recorded since 2016: 4,215 ha in 2018, 2,574 ha in 2021.
- 2,506 ha Peace River B fire, June 2021 2,557 ha in total; the hectares shown are those it shares with this fire
- 2,339 ha Peace River B fire, August 2018 19,245 ha in total; the hectares shown are those it shares with this fire
- 1,876 ha Peace River B fire, May 2018 17,185 ha in total; the hectares shown are those it shares with this fire
- 68 ha Peace River B fire, June 2021 3,108 ha in total; the hectares shown are those it shares with this fire
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
-
Peace River B where it started491,906 ha reached on 10 May5.6 %
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 2025Built-up area1.6 ha
Residents< 20
Inside the perimeter there were about 1.6 hectares of built-up land and almost nobody lived there (GHSL 2025, 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. The GHSL 2025 epoch is a projection made from 2020 and earlier data.
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) |
|---|---|---|---|---|---|
| 10 May | 22.8 °C | 18 % | 25 km/h | 1.0 mm | Moderate 19 |
| 11 May | 22.1 °C | 22 % | 42 km/h | 1.0 mm | Moderate 18 |
| 12 May | 24.9 °C | 16 % | 48 km/h | 0.0 mm | High 27 |
| 13 May | 25.3 °C | 20 % | 48 km/h | 0.0 mm | High 28 |
| 14 May | 28.4 °C | 20 % | 21 km/h | 0.0 mm | Moderate 17 |
| 15 May | 21.8 °C | 33 % | 50 km/h | 0.0 mm | High 29 |
| 16 May | 20.3 °C | 22 % | 24 km/h | 0.0 mm | Moderate 20 |
| 17 May | 23.6 °C | 21 % | 22 km/h | 0.0 mm | Moderate 21 |
| 18 May | 24.3 °C | 16 % | 43 km/h | 0.0 mm | High 32 |
| 19 May | 21.4 °C | 39 % | 41 km/h | 0.0 mm | High 30 |
| 20 May | 24.2 °C | 25 % | 32 km/h | 1.5 mm | Low 9 |
| 21 May | 22.5 °C | 34 % | 31 km/h | 3.3 mm | Moderate 17 |
| 22 May | 11.9 °C | 77 % | 47 km/h | 18.3 mm | Very low 0 |
| 23 May | 13.7 °C | 42 % | 32 km/h | 0.3 mm | Very low 0 |
| 24 May | 18.6 °C | 33 % | 39 km/h | 0.0 mm | Very low 4 |
| 25 May | 21.4 °C | 32 % | 26 km/h | 0.5 mm | Very low 4 |
| 26 May | 25.8 °C | 17 % | 45 km/h | 0.0 mm | High 22 |
| 27 May | 24.2 °C | 14 % | 39 km/h | 0.0 mm | High 24 |
| 28 May | 19.0 °C | 29 % | 32 km/h | 1.4 mm | Moderate 12 |
| 29 May | 16.6 °C | 14 % | 44 km/h | 0.2 mm | Moderate 18 |
| 30 May | 17.9 °C | 14 % | 38 km/h | 0.1 mm | High 22 |
| 31 May | 16.6 °C | 19 % | 43 km/h | 0.0 mm | High 22 |
| 1 Jun | 19.5 °C | 12 % | 31 km/h | 0.0 mm | High 22 |
| 2 Jun | 22.3 °C | 16 % | 40 km/h | 0.0 mm | High 30 |
| 3 Jun | 24.7 °C | 24 % | 36 km/h | 1.3 mm | Moderate 16 |
| 4 Jun | 20.0 °C | 20 % | 51 km/h | 13.4 mm | Very low 0 |
| 5 Jun | 18.4 °C | 18 % | 40 km/h | 0.0 mm | Low 6 |
| 6 Jun | 20.3 °C | 22 % | 55 km/h | 0.0 mm | Moderate 17 |
| 7 Jun | 23.3 °C | 22 % | 36 km/h | 0.0 mm | Moderate 19 |
| 8 Jun | 26.4 °C | 25 % | 35 km/h | 0.0 mm | Moderate 20 |
| 9 Jun | 26.9 °C | 35 % | 40 km/h | 1.6 mm | High 22 |
| 10 Jun | 20.0 °C | 44 % | 41 km/h | 1.0 mm | Very low 4 |
| 11 Jun | 24.3 °C | 23 % | 36 km/h | 0.0 mm | Moderate 12 |
| 12 Jun | 21.6 °C | 41 % | 31 km/h | 1.1 mm | Moderate 14 |
| 13 Jun | 19.1 °C | 29 % | 41 km/h | 0.4 mm | Moderate 11 |
| 14 Jun | 16.9 °C | 41 % | 42 km/h | 0.8 mm | Moderate 14 |
| 15 Jun | 21.2 °C | 21 % | 39 km/h | 0.5 mm | Low 7 |
| 16 Jun | 19.2 °C | 31 % | 40 km/h | 3.5 mm | Low 7 |
| 17 Jun | 12.9 °C | 46 % | 40 km/h | 3.2 mm | Very low 1 |
| 18 Jun | 14.9 °C | 59 % | 51 km/h | 5.7 mm | Very low 1 |
| 19 Jun | 17.9 °C | 26 % | 58 km/h | 0.1 mm | Very low 5 |
| 20 Jun | 20.5 °C | 28 % | 29 km/h | 0.0 mm | Low 9 |
| 21 Jun | 24.5 °C | 23 % | 22 km/h | 0.0 mm | Moderate 15 |
| 22 Jun | 25.1 °C | 32 % | 32 km/h | 1.5 mm | Moderate 18 |
| 23 Jun | 27.9 °C | 24 % | 21 km/h | 0.4 mm | Low 7 |
| 24 Jun | 21.6 °C | 49 % | 45 km/h | 1.9 mm | Low 8 |
| 25 Jun | 22.9 °C | 49 % | 24 km/h | 1.8 mm | Low 6 |
| 26 Jun | 25.8 °C | 31 % | 29 km/h | 0.1 mm | Low 10 |
| 27 Jun | 26.5 °C | 35 % | 23 km/h | 3.8 mm | Moderate 12 |
| 28 Jun | 26.6 °C | 40 % | 29 km/h | 3.8 mm | Very low 4 |
| 29 Jun | 23.3 °C | 33 % | 42 km/h | 0.5 mm | Low 8 |
| 30 Jun | 22.0 °C | 25 % | 48 km/h | 0.6 mm | Moderate 19 |
| 1 Jul | 19.6 °C | 32 % | 26 km/h | 1.8 mm | Moderate 14 |
| 2 Jul | 16.2 °C | 51 % | 49 km/h | 4.8 mm | Low 9 |
| 3 Jul | 19.0 °C | 50 % | 37 km/h | 4.8 mm | Very low 0 |
| 4 Jul | 26.2 °C | 24 % | 20 km/h | 0.0 mm | Very low 2 |
| 5 Jul | 27.9 °C | 28 % | 30 km/h | 0.4 mm | Moderate 11 |
| 6 Jul | 20.6 °C | 56 % | 28 km/h | 3.6 mm | Low 7 |
| 7 Jul | 27.2 °C | 26 % | 28 km/h | 0.0 mm | Very low 4 |
| 8 Jul | 31.0 °C | 26 % | 27 km/h | 0.0 mm | Moderate 13 |
| 9 Jul | 30.2 °C | 29 % | 35 km/h | 2.7 mm | Moderate 17 |
| 10 Jul | 23.9 °C | 52 % | 30 km/h | 2.3 mm | Very low 2 |
| 11 Jul | 24.7 °C | 42 % | 28 km/h | 7.9 mm | Very low 1 |
| 12 Jul | 24.0 °C | 52 % | 24 km/h | 4.5 mm | Very low 0 |
| 13 Jul | 21.5 °C | 65 % | 32 km/h | 4.9 mm | Very low 0 |
| 14 Jul | 25.0 °C | 41 % | 22 km/h | 0.0 mm | Very low 1 |
| 15 Jul | 22.5 °C | 46 % | 22 km/h | 8.1 mm | Very low 2 |
| 16 Jul | 24.9 °C | 36 % | 27 km/h | 2.0 mm | Very low 0 |
| 17 Jul | 20.1 °C | 53 % | 20 km/h | 9.4 mm | Very low 0 |
| 18 Jul | 18.7 °C | 66 % | 20 km/h | 4.0 mm | Very low 0 |
| 19 Jul | 22.6 °C | 58 % | 25 km/h | 0.2 mm | Very low 0 |
| 20 Jul | 26.9 °C | 32 % | 17 km/h | 0.0 mm | Very low 1 |
| 21 Jul | 27.7 °C | 33 % | 20 km/h | 2.8 mm | Very low 5 |
| 22 Jul | 22.6 °C | 50 % | 36 km/h | 1.0 mm | Very low 1 |
| 23 Jul | 23.9 °C | 25 % | 36 km/h | 0.0 mm | Low 7 |
| 24 Jul | 19.1 °C | 42 % | 21 km/h | 0.4 mm | Low 5 |
| 25 Jul | 17.1 °C | 72 % | 40 km/h | 16.3 mm | Very low 0 |
| 26 Jul | 14.5 °C | 93 % | 40 km/h | 25.2 mm | Very low 0 |
| 27 Jul | 19.0 °C | 58 % | 31 km/h | 1.3 mm | Very low 0 |
| 28 Jul | 23.1 °C | 30 % | 33 km/h | 0.0 mm | Very low 1 |
| 29 Jul | 25.1 °C | 25 % | 38 km/h | 0.0 mm | Very low 5 |
| 30 Jul | 25.3 °C | 29 % | 23 km/h | 0.3 mm | Low 6 |
| 31 Jul | 17.1 °C | 74 % | 28 km/h | 13.8 mm | Very low 0 |
| 1 Aug | 18.1 °C | 55 % | 24 km/h | 5.2 mm | Very low 0 |
| 2 Aug | 17.3 °C | 65 % | 23 km/h | 7.2 mm | Very low 0 |
| 3 Aug | 20.6 °C | 47 % | 27 km/h | 0.8 mm | Very low 0 |
| 4 Aug | 22.5 °C | 37 % | 33 km/h | 0.2 mm | Very low 1 |
| 5 Aug | 26.6 °C | 30 % | 25 km/h | 0.0 mm | Very low 4 |
| 6 Aug | 27.2 °C | 33 % | 22 km/h | 2.3 mm | Very low 5 |
| 7 Aug | 26.5 °C | 40 % | 31 km/h | 6.6 mm | Very low 1 |
| 8 Aug | 18.9 °C | 58 % | 32 km/h | 1.3 mm | Very low 0 |
| 9 Aug | 21.6 °C | 49 % | 25 km/h | 5.8 mm | Very low 0 |
| 10 Aug | 17.1 °C | 62 % | 45 km/h | 2.2 mm | Very low 0 |
| 11 Aug | 20.7 °C | 49 % | 21 km/h | 3.9 mm | Very low 0 |
| 12 Aug | 23.0 °C | 31 % | 37 km/h | 0.0 mm | Very low 1 |
| 13 Aug | 26.1 °C | 31 % | 52 km/h | 0.1 mm | Moderate 12 |
| 14 Aug | 22.4 °C | 26 % | 33 km/h | 0.1 mm | Low 10 |
| 15 Aug | 22.8 °C | 40 % | 48 km/h | 6.4 mm | Low 9 |
| 16 Aug | 25.2 °C | 31 % | 37 km/h | 0.0 mm | Very low 1 |
| 17 Aug | 19.2 °C | 45 % | 37 km/h | 6.5 mm | Very low 3 |
| 18 Aug | 12.6 °C | 53 % | 45 km/h | 2.2 mm | Very low 0 |
| 19 Aug | 21.5 °C | 33 % | 25 km/h | 0.0 mm | Very low 1 |
| 20 Aug | 23.6 °C | 28 % | 20 km/h | 0.0 mm | Very low 4 |
| 21 Aug | 23.5 °C | 26 % | 22 km/h | 0.0 mm | Low 9 |
| 22 Aug | 23.5 °C | 29 % | 21 km/h | 0.0 mm | Low 9 |
| 23 Aug | 20.2 °C | 45 % | 37 km/h | 0.3 mm | Moderate 12 |
| 24 Aug | 23.8 °C | 32 % | 28 km/h | 0.0 mm | Low 10 |
| 25 Aug | 27.5 °C | 23 % | 34 km/h | 0.0 mm | Moderate 15 |
| 26 Aug | 26.2 °C | 37 % | 32 km/h | 0.0 mm | Moderate 17 |
| 27 Aug | 29.7 °C | 30 % | 23 km/h | 0.0 mm | Moderate 15 |
| 28 Aug | 31.4 °C | 27 % | 19 km/h | 0.0 mm | Moderate 15 |
| 29 Aug | 26.1 °C | 36 % | 26 km/h | 0.0 mm | Moderate 16 |
| 30 Aug | 24.3 °C | 44 % | 24 km/h | 2.9 mm | Moderate 14 |
| 31 Aug | 21.8 °C | 33 % | 33 km/h | 0.8 mm | Very low 4 |
| 1 Sept | 26.6 °C | 24 % | 51 km/h | 0.0 mm | Moderate 19 |
| 2 Sept | 20.3 °C | 24 % | 40 km/h | 0.0 mm | High 23 |
| 3 Sept | 12.2 °C | 52 % | 45 km/h | 4.2 mm | Low 10 |
| 4 Sept | 17.0 °C | 30 % | 30 km/h | 0.0 mm | Very low 2 |
| 5 Sept | 11.6 °C | 58 % | 27 km/h | 1.0 mm | Very low 2 |
| 6 Sept | 16.3 °C | 40 % | 24 km/h | 0.9 mm | Very low 4 |
| 7 Sept | 18.6 °C | 31 % | 23 km/h | 0.0 mm | Low 7 |
| 8 Sept | 19.6 °C | 29 % | 17 km/h | 0.0 mm | Low 9 |
| 9 Sept | 21.0 °C | 28 % | 36 km/h | 0.0 mm | Moderate 17 |
| 10 Sept | 23.1 °C | 30 % | 36 km/h | 0.0 mm | Moderate 18 |
| 11 Sept | 19.5 °C | 31 % | 49 km/h | 0.0 mm | High 25 |
| 12 Sept | 20.6 °C | 31 % | 37 km/h | 0.0 mm | Moderate 19 |
| 13 Sept | 16.6 °C | 33 % | 43 km/h | 0.5 mm | Moderate 20 |
| 14 Sept | 19.7 °C | 24 % | 36 km/h | 0.0 mm | High 22 |
| 15 Sept | 23.6 °C | 20 % | 64 km/h | 0.0 mm | High 33 |
| 16 Sept | 18.8 °C | 27 % | 31 km/h | 0.0 mm | Moderate 20 |
| 17 Sept | 18.6 °C | 34 % | 56 km/h | 0.0 mm | High 30 |
| 18 Sept | 15.9 °C | 32 % | 43 km/h | 0.0 mm | High 25 |
| 19 Sept | 14.2 °C | 38 % | 24 km/h | 0.6 mm | Moderate 17 |
| 20 Sept | 17.3 °C | 28 % | 32 km/h | 0.0 mm | Moderate 15 |
| 21 Sept | 21.4 °C | 36 % | 42 km/h | 0.0 mm | High 25 |
| 22 Sept | 23.7 °C | 20 % | 52 km/h | 0.0 mm | High 35 |
| 23 Sept | 17.3 °C | 35 % | 34 km/h | 0.0 mm | Moderate 17 |
| 24 Sept | 10.5 °C | 65 % | 19 km/h | 2.8 mm | Very low 3 |
| 25 Sept | 9.2 °C | 66 % | 27 km/h | 5.2 mm | Very low 4 |
| 26 Sept | 15.6 °C | 46 % | 43 km/h | 0.1 mm | Very low 1 |
| 27 Sept | 14.3 °C | 53 % | 23 km/h | 2.0 mm | Very low 2 |
| 28 Sept | 8.4 °C | 97 % | 28 km/h | 5.2 mm | Very low 0 |
| 29 Sept | 8.9 °C | 71 % | 14 km/h | 2.6 mm | Very low 0 |
| 30 Sept | 9.3 °C | 69 % | 37 km/h | 0.5 mm | Very low 0 |
| 1 Oct | 13.1 °C | 47 % | 36 km/h | 0.0 mm | Very low 2 |
| 2 Oct | 12.3 °C | 48 % | 24 km/h | 0.0 mm | Very low 2 |
| 3 Oct | 13.6 °C | 38 % | 41 km/h | 0.0 mm | Low 6 |
| 4 Oct | 8.6 °C | 31 % | 45 km/h | 0.6 mm | Low 11 |
| 5 Oct | 6.9 °C | 37 % | 42 km/h | 0.0 mm | Low 9 |
| 6 Oct | 18.7 °C | 34 % | 43 km/h | 0.0 mm | Low 11 |
| 7 Oct | 20.5 °C | 30 % | 39 km/h | 0.0 mm | Moderate 12 |
| 8 Oct | 21.6 °C | 27 % | 46 km/h | 0.0 mm | High 21 |
| 9 Oct | 17.5 °C | 36 % | 50 km/h | 0.0 mm | Moderate 20 |
| 10 Oct | 11.6 °C | 52 % | 25 km/h | 1.7 mm | Moderate 11 |
| 11 Oct | 14.0 °C | 41 % | 12 km/h | 0.0 mm | Very low 2 |
| 12 Oct | 15.3 °C | 43 % | 33 km/h | 0.1 mm | Very low 4 |
| 13 Oct | 11.2 °C | 65 % | 35 km/h | 0.0 mm | Low 6 |
| 14 Oct | 9.0 °C | 71 % | 43 km/h | 0.0 mm | Low 7 |
| 15 Oct | 14.4 °C | 48 % | 27 km/h | 0.0 mm | Low 6 |
| 16 Oct | 11.5 °C | 56 % | 18 km/h | 0.7 mm | Very low 5 |
| 17 Oct | 11.6 °C | 57 % | 46 km/h | 2.7 mm | Very low 1 |
| 18 Oct | 14.0 °C | 45 % | 46 km/h | 1.6 mm | Very low 3 |
| 19 Oct | 15.2 °C | 24 % | 46 km/h | 0.0 mm | Low 6 |
| 20 Oct | 11.5 °C | 32 % | 29 km/h | 0.0 mm | Low 6 |
| 21 Oct | 1.3 °C | 66 % | 32 km/h | 1.6 mm | Very low 5 |
| 22 Oct after | -5.2 °C | 44 % | 38 km/h | 2.2 mm | Very low 1 |
Its twins: fires that started in the same weather
It started with an FWI of 19.1, a minimum humidity of 18% and 13 days without rain. Fires in the area that started in weather like this since 2016: 11.
FWI at the start
19.1
Minimum humidity
18 %
Days without rain
13
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Peace River B fire, 10 May 2023
481,540 ha
165 days
FWI 19.1
Min. humidity 18 %
Northern Rockies fire, May 2024
3,603 ha
25 days
FWI 21.5
Min. humidity 19 %
54 km away, in 2024
First rain (1 mm or more) after it ended: 3.1 mm on 3 Jun.
Northern Rockies fire, May 2024
8,804 ha
103 days
FWI 23.3
Min. humidity 18 %
117 km away, in 2024
First rain (1 mm or more) after it ended: 18.0 mm on 27 Aug.
Mackenzie County fire, June 2024
2,649 ha
33 days
FWI 25.8
Min. humidity 19 %
236 km away, in 2024
First rain (1 mm or more) after it ended: 9.6 mm on 23 Jul.
Peace River B fire, May 2024
2,295 ha
101 days
FWI 30.6
Min. humidity 18 %
60 km away, in 2024
First rain (1 mm or more) after it ended: 1.8 mm on 26 Aug.
Peace River B fire, April 2016
3,786 ha
51 days
FWI 15.0
Min. humidity 12 %
135 km away, in 2016
First rain (1 mm or more) after it ended: 6.5 mm on 8 Jun.
What happened to them
Fires in the area that started in similar weather: 11. 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
2.2 mmfirst rain
22 Octthe day after it ended
64km/h · max. gust
It was considered over on 21 Oct, and on 22 Oct 2.2 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 · 3 May 2023
After · 28 Oct 2023
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.
The smoke
CAMS · CopernicusOn 11 June 2023 the air beside the fire reached 767 µg/m³ of PM2.5. That day averaged 520: 35 times the WHO daily guideline (15).
PM2.5 peak767 µg/m³
Days over the guideline84 days
PM101,099 µg/m³
Optical depth8.13
WHO 15
10 May13 Jun17 Jul20 Aug23 Sept
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 · 47,551Every 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
Frequently asked questions
- How long did the Peace River B fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 10 May 2023 to 21 October 2023 (165 days). The perimeter dates it from 12 May 2023 to 20 October 2023.
- How much area did it burn?
- The official perimeter mapped by Canada’s CWFIS (Natural Resources Canada) is 481,540 hectares (4,815.4 km²). Other tallies, such as those of provincial agencies, may give slightly different figures.
- Which census subdivisions burned?
- The fire only entered Peace River B (491,906 ha, 5.6 %).
- What was the weather like?
- During the fire the temperature reached 31.4 °C, humidity dropped to 12 % and gusts hit 64 km/h. The fire danger index (FWI) reached 35, 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.
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 · 2 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
- Last day with fire: 20 October 2023 → 21 October 2023.
- Start date: 12 May 2023 → 10 May 2023.
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 12 May 2023 to 20 October 2023. 47,551 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 2025, 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.