How long did the Annapolis, Subd. D fire last?

According to the heat detections seen by satellite inside the perimeter, it burned from 14 August 2025 to 30 August 2025 (17 days). The perimeter dates it from 14 August 2025 to 25 August 2025.

How much area did it burn?

The perimeter GWIS (Copernicus) rebuilt from heat detections is 8,092 hectares (80.9 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire only entered Annapolis, Subd. D (8,100 ha, 3.8 %).

What was the weather like?

During the fire the temperature reached 26.0 °C, humidity dropped to 28 % and gusts hit 61 km/h. The fire danger index (FWI) reached 23, class High.

Where does this data come from?

From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Canada (geoBoundaries). It is not an official report.

CA · Canada · 2025-08-14 → 2025-08-30

Annapolis, Subd. D fire, August 2025 Annapolis, Subd. D

Out · last detection 30 Aug 2025, 06:14 UTC

The fire started on 14 August 2025 in Annapolis, Subd. D, Canada, and satellites saw it burning for 17 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 8,092 hectares from heat detections, spread across a single municipality.

Number 135 in Canada in 2025, of 669.

Compare with…

Burnt area: 8,092ha; GWIS perimeter (Copernicus)
Duration: 17days; 14 Aug 2025 – 30 Aug 2025
Municipalities hit: 1; municipalities
Started on: 14 Aug; 2025
Heat detections: 877; in a single hotspot: 545 MW
Danger at start: 4; Very low · FWI index
Average daily power: 1.9GW; detected power per day, on average

HOTSPOTS BY DAY 14 Aug30 Aug

Play back 30 Aug 2025

How it evolved, day by day

14 Aug 16 Aug 18 Aug 21 Aug 23 Aug 24 Aug 27 Aug 30 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

26°high

61km/h · peak gust

28%lowest humidity

It had gone 12 days without rain (1 mm or more) when it started. Rain came after the fire: 1.6 mm on 5 Sept.

This area had burned before

No earlier perimeters overlap this fire since 2016, when the satellite record begins.

How big is it?

It burned the equivalent of 5.1% of the area of London (81 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

Annapolis, Subd. D where it started

8,100 ha reached on 14 Aug

3.8 %

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.

People and buildings inside the perimeter

GHSL 2025

Built-up area0.71 ha

Residents≈ 60

Inside the perimeter there were about 0.71 hectares of built-up land and about 60 residents (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)
14 Aug	24.4 °C	69 %	40 km/h	2.3 mm	Very low 4
15 Aug	25.1 °C	35 %	38 km/h	0.0 mm	Moderate 12
16 Aug	25.3 °C	31 %	26 km/h	0.0 mm	Moderate 17
17 Aug	26.0 °C	33 %	42 km/h	3.8 mm	Low 6
18 Aug	19.3 °C	34 %	50 km/h	4.7 mm	Very low 3
19 Aug	19.4 °C	28 %	29 km/h	0.0 mm	Low 6
20 Aug	21.2 °C	34 %	26 km/h	0.0 mm	Low 11
21 Aug	22.8 °C	32 %	27 km/h	0.0 mm	Moderate 13
22 Aug	21.3 °C	41 %	61 km/h	0.0 mm	Moderate 21
23 Aug	25.9 °C	31 %	37 km/h	0.0 mm	Moderate 20
24 Aug	25.3 °C	29 %	52 km/h	0.0 mm	High 23
25 Aug	21.8 °C	73 %	52 km/h	1.8 mm	Very low 5
26 Aug	23.0 °C	59 %	54 km/h	0.3 mm	Low 8
27 Aug	21.6 °C	39 %	36 km/h	0.0 mm	Moderate 13
28 Aug	21.3 °C	37 %	40 km/h	0.0 mm	Moderate 17
29 Aug	22.0 °C	38 %	35 km/h	0.2 mm	Moderate 16
30 Aug	20.2 °C	51 %	34 km/h	10.6 mm	Very low 1
31 Aug after	20.0 °C	53 %	37 km/h	0.0 mm	Very low 3
1 Sept after	24.1 °C	40 %	28 km/h	0.0 mm	Low 8
2 Sept after	25.0 °C	42 %	22 km/h	0.0 mm	Low 11
3 Sept after	22.4 °C	50 %	30 km/h	0.0 mm	Low 11
4 Sept after	22.9 °C	50 %	24 km/h	0.0 mm	Low 11
5 Sept after	23.9 °C	65 %	34 km/h	1.6 mm	Very low 5

Before and after, from space

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

↔

Before · 7 Aug 2025

After · 6 Sept 2025

Before After

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 26 August 2025 the air beside the fire reached 186 µg/m³ of PM2.5. That day averaged 96: 6.4 times the WHO daily guideline (15).

PM2.5 peak186 µg/m³

Days over the guideline11 days

PM10187 µg/m³

Optical depth1.25

WHO 15

1213141516171819202122232425262728

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 · 877Every 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

Frequently asked questions

How long did the Annapolis, Subd. D fire last?: According to the heat detections seen by satellite inside the perimeter, it burned from 14 August 2025 to 30 August 2025 (17 days). The perimeter dates it from 14 August 2025 to 25 August 2025.
How much area did it burn?: The perimeter GWIS (Copernicus) rebuilt from heat detections is 8,092 hectares (80.9 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire only entered Annapolis, Subd. D (8,100 ha, 3.8 %).
What was the weather like?: During the fire the temperature reached 26.0 °C, humidity dropped to 28 % and gusts hit 61 km/h. The fire danger index (FWI) reached 23, class High.
Where does this data come from?: From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Canada (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.

Emergency number: 911 · Emergency number and official warnings ›

Satellite cross-check

NASA FIRMS ↗
CWFIS · Interactive map ↗

History of this page · 1 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.

25 October 2026 Last day with fire: 25 August 2025 → 30 August 2025.

RSS Changes to this page

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.

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What do you think is wrong?

Dates or duration Place or towns Burned area Name It was not a wildfire Same fire as another page Something else

What really happened?

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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: 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 14 August 2025 to 25 August 2025. 877 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.

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 ADM3 (Open Data Commons Open Database License 1.0). 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.

Where it burned