How long did the Emigrant fire last?

It burned between 24 August 2025 and 24 August 2025: 1 day, according to the start date recorded by United States agencies (MTBS / NIFC) and the heat detections seen by satellite.

How much area did it burn?

The official perimeter published by United States agencies (MTBS / NIFC) is 13,406 hectares (134.1 km²). Other tallies, such as daily incident reports, may give slightly different figures.

Which counties burned?

The fire entered 2 counties: Lane (6,843 ha, 0.6 %); Douglas (6,521 ha, 0.5 %).

What was the weather like?

During the fire the temperature reached 28.7 °C, humidity dropped to 22 % and gusts hit 45 km/h. The fire danger index (FWI) reached 30, class High.

Where does this data come from?

From the official burnt perimeter of United States agencies (MTBS / NIFC, public domain), NASA FIRMS VIIRS hotspots and the administrative boundaries of United States. It is not an official report.

US · United States · 2025-08-24 → 2025-08-24

Emigrant Fire, August 2025 Lane, Douglas

Out · last detection 25 Aug 2025, 20:55 UTC

The fire started on 24 August 2025 in Douglas, United States, and satellites saw it burning for 1 day. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 13,406 hectares, spread across 2 counties.

It is the 56th largest in Oregon since 2016 (of 327 with a page). Number 27 in United States in 2025, of 327.

Burnt area: 13,406ha; official perimeter (MTBS / NIFC)
Duration: 1day; 24 Aug 2025 – 24 Aug 2025
Municipalities hit: 2; counties
Started on: 24 Aug; 2025
Heat detections: 2,199; in a single hotspot: 704 MW
Danger at start: 15; Moderate · FWI index
Energy released: 3.2GW; sum of detected power

HOTSPOTS BY DAY 24 Aug24 Aug

How it evolved, day by day

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

The weather it burned in

29°high

45km/h · peak gust

22%lowest humidity

It had gone 7 days without rain (1 mm or more) when it started. Rain came after the fire: 2.3 mm on 3 Sept.

This area had burned before

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

What happened to each town

Lane

6,843 ha reached on 25 Aug

0.6 %
Douglas where it started

6,521 ha reached on 26 Aug

0.5 %

Burnt area inside each county, from crossing the official perimeter with administrative boundaries. The distance is from the town centre 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) · Copernicus Climate Change Service (ERA5)

Day	High	Min. humidity	Peak gust	Rain	Danger (FWI)
24 Aug	28.7 °C	22 %	41 km/h	2.2 mm	Moderate 15
25 Aug after	24.7 °C	32 %	31 km/h	1.1 mm	Moderate 14
26 Aug after	24.9 °C	35 %	40 km/h	1.0 mm	Moderate 17
27 Aug after	23.8 °C	34 %	45 km/h	0.5 mm	Moderate 21
28 Aug after	25.1 °C	23 %	41 km/h	0.0 mm	High 28
29 Aug after	24.4 °C	23 %	40 km/h	0.0 mm	High 28
30 Aug after	23.8 °C	31 %	37 km/h	0.5 mm	High 29
31 Aug after	24.5 °C	27 %	41 km/h	0.0 mm	High 30
1 Sept after	24.1 °C	28 %	38 km/h	0.0 mm	High 29
2 Sept after	29.1 °C	20 %	37 km/h	0.6 mm	High 31
3 Sept after	26.4 °C	28 %	34 km/h	2.3 mm	Moderate 11

Before and after, from space

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

↔

Before · 17 Aug 2025

After · 31 Aug 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 27 August 2025 the air beside the fire reached 216 µg/m³ of PM2.5. That day averaged 101: 6.7 times the WHO daily guideline (15).

PM2.5 peak216 µg/m³

Days over the guideline4 days

PM10221 µg/m³

Optical depth1.03

WHO 15

222324252627

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 · 2,199Every 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

All fires in United States ›

Frequently asked questions

How long did the Emigrant fire last?: It burned between 24 August 2025 and 24 August 2025: 1 day, according to the start date recorded by United States agencies (MTBS / NIFC) and the heat detections seen by satellite.
How much area did it burn?: The official perimeter published by United States agencies (MTBS / NIFC) is 13,406 hectares (134.1 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?: The fire entered 2 counties: Lane (6,843 ha, 0.6 %); Douglas (6,521 ha, 0.5 %).
What was the weather like?: During the fire the temperature reached 28.7 °C, humidity dropped to 22 % and gusts hit 45 km/h. The fire danger index (FWI) reached 30, class High.
Where does this data come from?: From the official burnt perimeter of United States agencies (MTBS / NIFC, public domain), NASA FIRMS VIIRS hotspots and the administrative boundaries of United States. 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

Satellite cross-check

NASA FIRMS ↗
NIFC · Fire maps ↗

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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Where this data comes from

The perimeter is official and in the public domain. For past years it comes from MTBS (Monitoring Trends in Burn Severity), run by the U.S. Geological Survey and the USDA Forest Service, which map it on Landsat and Sentinel-2 imagery. For the current and last year it comes from WFIGS at the National Interagency Fire Center (NIFC): incident perimeters mapped by fire crews, aircraft and imagery. Heat detections come from the VIIRS sensors aboard Suomi-NPP and NOAA-20, distributed by NASA FIRMS at 375 m resolution. County boundaries come from geoBoundaries ADM2 (Public Domain). The area per county is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ slightly from official figures.

Where it burned