How long did the Eagle Bluff fire last?

It burned between 29 July 2023 and 29 July 2023: 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 6,676 hectares (66.8 km²). Other tallies, such as daily incident reports, may give slightly different figures.

Which counties burned?

The fire only entered Okanogan (6,723 ha, 0.5 %).

What was the weather like?

During the fire the temperature reached 29.6 °C, humidity dropped to 17 % and gusts hit 55 km/h. The fire danger index (FWI) reached 40, class Very 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 · 2023-07-29 → 2023-07-29

Eagle Bluff Fire, July 2023 Okanogan

Out · last detection 30 Jul 2023, 20:50 UTC

The fire started on 29 July 2023 in Okanogan, United States, and satellites saw it burning for 1 day. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 6,676 hectares, spread across a single county.

It is the 55th largest in Washington since 2016 (of 285 with a page). Number 24 in United States in 2023, of 305.

Burnt area: 6,676ha; official perimeter (MTBS / NIFC)
Duration: 1day; 29 Jul 2023 – 29 Jul 2023
Municipalities hit: 1; counties
Started on: 29 Jul; 2023
Heat detections: 418; in a single hotspot: 124 MW
Danger at start: 40; Very high · FWI index
Energy released: 6.4GW; sum of detected power

Play back 30 Jul 2023

HOTSPOTS BY DAY 29 Jul29 Jul

How it evolved, day by day

2930

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

The weather it burned in

30°high

55km/h · peak gust

17%lowest humidity

It had gone 17 days without rain (1 mm or more) when it started.

This area had burned before

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

What happened to each town

Okanogan where it started

6,723 ha reached on 29 Jul

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)
29 Jul	29.4 °C	18 %	55 km/h	0.0 mm	Very high 40
30 Jul after	28.1 °C	20 %	41 km/h	0.2 mm	High 36
31 Jul after	27.8 °C	18 %	38 km/h	0.0 mm	High 36
1 Aug after	28.5 °C	17 %	40 km/h	0.0 mm	High 36
2 Aug after	29.6 °C	19 %	38 km/h	0.0 mm	Very high 40
3 Aug after	29.1 °C	24 %	32 km/h	0.0 mm	High 36
4 Aug after	29.5 °C	20 %	31 km/h	0.0 mm	High 36
5 Aug after	30.8 °C	20 %	34 km/h	0.0 mm	High 37
6 Aug after	27.8 °C	31 %	24 km/h	0.5 mm	High 32
7 Aug after	26.1 °C	36 %	23 km/h	0.3 mm	High 27
8 Aug after	25.1 °C	43 %	37 km/h	0.0 mm	High 26
9 Aug after	23.4 °C	45 %	27 km/h	0.8 mm	Moderate 16
10 Aug after	26.0 °C	25 %	32 km/h	0.0 mm	High 26
11 Aug after	28.1 °C	25 %	28 km/h	0.0 mm	High 30
12 Aug after	27.2 °C	25 %	40 km/h	0.0 mm	High 33

Before and after, from space

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

↔

Before · 22 Jul 2023

After · 5 Aug 2023

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 31 July 2023 the air beside the fire reached 131 µg/m³ of PM2.5. That day averaged 64: 4.2 times the WHO daily guideline (15).

PM2.5 peak131 µg/m³

Days over the guideline2 days

PM10188 µg/m³

Optical depth1.77

WHO 15

27282930311

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 · 418Every 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 Eagle Bluff fire last?: It burned between 29 July 2023 and 29 July 2023: 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 6,676 hectares (66.8 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?: The fire only entered Okanogan (6,723 ha, 0.5 %).
What was the weather like?: During the fire the temperature reached 29.6 °C, humidity dropped to 17 % and gusts hit 55 km/h. The fire danger index (FWI) reached 40, class Very 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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What really happened?

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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