How long did the Judd Fire last?

The official perimeter only gives the start date (7 June 2018). The end comes from the heat detections inside the perimeter: it burned until 8 June 2018 (2 days from 7 June 2018), 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 1,763 hectares (17.6 km²). Other tallies, such as daily incident reports, may give slightly different figures.

Which counties burned?

The fire only entered Cochise (1,747 ha, 0.1 %).

What was the weather like?

During the fire the temperature reached 35.9 °C, humidity dropped to 13 % and gusts hit 35 km/h. The fire danger index (FWI) reached 48, 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 · 2018-06-07 → 2018-06-08

Judd Fire, June 2018 Cochise

Out · last detection 8 Jun 2018, 20:56 UTC

The fire started on 7 June 2018 in Cochise, United States, and satellites saw it burning for 2 days. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 1,763 hectares, spread across a single county.

It is the 146th largest in Arizona since 2016 (of 380 with a page). Number 219 in United States in 2018, of 511.

Compare with…

Suggestions: Plm // Williams · 2023 Swisshelms · 2017

Burnt area: 1,763ha; official perimeter (MTBS / NIFC)
Duration: ≈ 2days; 7 Jun 2018 – 8 Jun 2018
Counties hit: 1; counties
Started on: 7 Jun; 2018
Heat detections: 51; in a single hotspot: 51 MW
Danger at start: 48; Very high · FWI index
Average daily power: 617MW; detected power per day, on average

HOTSPOTS BY DAY 7 Jun8 Jun

How it evolved, day by day

8 Jun 2018 · 617 MW · 51

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

The weather it burned in

36°high

35km/h · peak gust

13%lowest humidity

It had gone 0 days without rain (1 mm or more) when it started. Rain came after the fire: 1.6 mm on 14 Jun.

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 1.1% of the area of London (18 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

Cochise where it started

1,747 ha reached on 8 Jun

0.1 %

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.

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)
7 Jun	35.9 °C	13 %	35 km/h	0.6 mm	Very high 48
8 Jun	34.8 °C	13 %	23 km/h	0.0 mm	Very high 47
9 Jun after	32.3 °C	16 %	39 km/h	0.0 mm	Very high 50
10 Jun after	34.6 °C	8 %	48 km/h	0.0 mm	Extreme 62
11 Jun after	36.1 °C	5 %	29 km/h	0.0 mm	Extreme 55
12 Jun after	35.8 °C	8 %	40 km/h	0.0 mm	Extreme 66
13 Jun after	36.6 °C	9 %	34 km/h	0.0 mm	Extreme 57
14 Jun after	34.9 °C	13 %	45 km/h	1.6 mm	Very high 48

Before and after, from space

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

↔

Before · 31 May 2018

After · 15 Jun 2018

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.

Detections table · 51Every 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

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Frequently asked questions

How long did the Judd Fire last?: The official perimeter only gives the start date (7 June 2018). The end comes from the heat detections inside the perimeter: it burned until 8 June 2018 (2 days from 7 June 2018), 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 1,763 hectares (17.6 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?: The fire only entered Cochise (1,747 ha, 0.1 %).
What was the weather like?: During the fire the temperature reached 35.9 °C, humidity dropped to 13 % and gusts hit 35 km/h. The fire danger index (FWI) reached 48, 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 · Emergency number and official warnings ›

Satellite cross-check

NASA FIRMS ↗
NIFC · Fire maps ↗

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.

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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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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: MTBS (US Geological Survey and US Forest Service), 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. 51 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.

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.

Where it burned