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0497 Henry Fire, July 2026 Crook

Out · last detection 23 Jul 2026, 09:15 UTC

The fire started on 16 July 2026 in Crook, United States, and satellites saw it burning for 8 days. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 12,077 hectares, spread across a single county.

It is the 63th largest in Oregon since 2016 (of 325 with a page). Number 49 in United States in 2026, of 419.

Compare with…

Suggestions: Firestone · 2024Upton · 20210523 Camp Creek · 20240523 Willow · 2025

Burnt area
12,077ha
official perimeter (MTBS / NIFC)
Duration
≈ 8days
16 Jul 2026 – 23 Jul 2026
Counties hit
1
counties
Started on
16 Jul
2026
Heat detections
175
in a single hotspot: 83 MW
Danger at start
53
Extreme · FWI index
Average daily power
511MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 16 Jul23 Jul
23 Jul 2026

How it evolved, day by day

16 Jul 2026 · 35 MW · 3 17 Jul 2026 · 17 MW · 3 18 Jul 2026 · 1,256 MW · 56 19 Jul 2026 · 1,247 MW · 112 23 Jul 2026 · 1 MW · 1
16 Jul 17 Jul 18 Jul 19 Jul 23 Jul

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

Fire front film How it spread from one satellite pass to the next (12 passes) and with what wind. Watch the film

The weather it burned in

32°high
44km/h · peak gust
10%lowest humidity

It had gone 9 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.

How big is it?

10 km
It burned the equivalent of 7.6% of the area of London (121 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 county

  1. Crook where it started
    12,335 ha reached on 16 Jul
    1.6 %

Burnt area inside each county, 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 2025
Built-up area< 0.1 ha
Residents< 20

Inside the perimeter there was no noticeable 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)

Started with Very dry air: 41 % of the area in United States

Day High Min. humidity Peak gust Rain Danger (FWI)
16 Jul 32.5 °C 13 % 44 km/h 0.0 mm Extreme 53
17 Jul 32.2 °C 10 % 37 km/h 0.0 mm Extreme 55
18 Jul 31.7 °C 11 % 36 km/h 0.0 mm Extreme 52
19 Jul 32.5 °C 11 % 35 km/h 0.0 mm Very high 48
20 Jul 27.3 °C 24 % 25 km/h 1.3 mm High 26
21 Jul 32.1 °C 17 % 31 km/h 0.0 mm High 34
22 Jul 32.1 °C 23 % 36 km/h 2.3 mm High 34
23 Jul 31.2 °C 16 % 31 km/h 0.0 mm High 27
24 Jul after 33.5 °C 8 % 37 km/h 0.0 mm Extreme 55
25 Jul after 31.0 °C 11 % 44 km/h 0.0 mm Very extreme 72
26 Jul after 29.6 °C 10 % 37 km/h 0.0 mm Extreme 56
27 Jul after 30.4 °C 11 % 38 km/h 0.0 mm Extreme 52
28 Jul after 29.7 °C 15 % 36 km/h 0.0 mm Very high 49
29 Jul after 30.8 °C 17 % 41 km/h 0.0 mm Very high 43
30 Jul after 30.2 °C 13 % 30 km/h 0.0 mm Very high 45
31 Jul after 34.5 °C 12 % 31 km/h 0.0 mm Very high 40
1 Aug after 29.9 °C 13 % 43 km/h 0.0 mm Extreme 60
2 Aug after 24.5 °C 16 % 37 km/h 0.0 mm Extreme 52

Its twins: fires that started in the same weather

It started with an FWI of 52.6, a minimum humidity of 13% and 9 days without rain. Fires in the area that started in weather like this since 2016: 26.

FWI at the start 52.6
Minimum humidity 13 %
Days without rain 9
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Firestone Fire, September 2024
3,892 ha 8 days FWI 53.0 Min. humidity 11 % 89 km away, in 2024

First rain (1 mm or more) after it ended: 1.4 mm on 17 Sept.

See its page Compare with this fire

What happened to them

3 days
median duration
2,165 ha
median area
77 %
went past 1,000 ha
1.9 mm
rain at the end (median; 14 of 26 had it)

It was 5.6 times larger than the median of its twins and lasted 8 days, against 3 days.

Only 7 of its 26 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 12 of 26, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 1.9 mm.

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

—first rain
—no rain in ten days
44km/h · max. gust

It was considered over on 23 Jul, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 14 of 26, with a median of 1.9 mm.

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.

How we calculate it

Before and after, from space

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

Before · 9 Jul 2026
After · 30 Jul 2026

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 21 July 2026 the air beside the fire reached 320 µg/m³ of PM2.5. That day averaged 194: 13 times the WHO daily guideline (15).

PM2.5 peak320 µg/m³
Days over the guideline9 days
PM10327 µg/m³
Optical depth1.94
14 Jul17 Jul20 Jul23 Jul26 Jul
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 · 175Every 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 timeSatelliteFRP (MW)LatLon

Other fires nearby

All fires in United States

Frequently asked questions

How long did the 0497 Henry Fire last?
The official perimeter only gives the start date (16 July 2026). The end comes from the heat detections inside the perimeter: it burned until 23 July 2026 (8 days from 16 July 2026), the last day with detections before more than 10 days in a row without any, so it is approximate.
How much area did it burn?
The official perimeter published by United States agencies (MTBS / NIFC) is 12,077 hectares (120.8 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?
The fire only entered Crook (12,335 ha, 1.6 %).
What was the weather like?
During the fire the temperature reached 32.5 °C, humidity dropped to 10 % and gusts hit 44 km/h. The fire danger index (FWI) reached 55, class Extreme.
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.
How did the fires that started in similar weather in this area end?
Fires less than 250 km away that started since 2016 with a similar FWI, humidity and dry spell: 26. Their median duration was 3 days and their median area 2,165 ha; 77 % went past 1,000 ha. Only 7 of its 26 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 12 of 26, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 1.9 mm.

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

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
What do you think is wrong?

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: NIFC WFIGS (United States), official.
  • The official perimeter has no end date: the end is the last day with VIIRS detections inside the perimeter before a gap of more than 10 days (150 days at most), so it is approximate. 175 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 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.