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Ranch Fire, 24 July 2018 Coconino

Out · last detection 25 Jul 2018, 09:56 UTC

The fire started on 24 July 2018 in Coconino, United States, and satellites saw it burning for 1 day. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 1,642 hectares, spread across a single county.

It is the 158th largest in Arizona since 2016 (of 380 with a page). Number 232 in United States in 2018, of 511.

Burnt area
1,642ha
official perimeter (MTBS / NIFC)
Duration
1day
24 Jul 2018 – 24 Jul 2018
Municipalities hit
1
counties
Started on
24 Jul
2018
Heat detections
113
in a single hotspot: 150 MW
Danger at start
4
Very low · FWI index
Energy released
42MW
sum of detected power

Where it burned

25 Jul 2018
HOTSPOTS BY DAY 24 Jul24 Jul

How it evolved, day by day

2425

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

The weather it burned in

33°high
47km/h · peak gust
13%lowest humidity

It had gone one day without rain (1 mm or more) when it started. Rain came after the fire: 5.8 mm on 10 Aug.

This area had burned before

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

What happened to each town

  1. Coconino where it started
    1,624 ha reached on 24 Jul
    0.0 %

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 Jul 31.1 °C 26 % 38 km/h 5.0 mm Very low 4
25 Jul after 30.8 °C 25 % 38 km/h 1.0 mm Moderate 13
26 Jul after 32.0 °C 18 % 36 km/h 0.0 mm High 24
27 Jul after 29.7 °C 32 % 36 km/h 4.1 mm Very low 5
28 Jul after 29.8 °C 29 % 34 km/h 4.6 mm Very low 4
29 Jul after 30.6 °C 22 % 27 km/h 0.0 mm Moderate 14
30 Jul after 32.1 °C 20 % 35 km/h 0.9 mm Moderate 18
31 Jul after 29.7 °C 18 % 38 km/h 0.4 mm High 23
1 Aug after 29.9 °C 29 % 30 km/h 4.3 mm Low 5
2 Aug after 28.0 °C 37 % 41 km/h 6.2 mm Very low 2
3 Aug after 29.1 °C 29 % 39 km/h 6.9 mm Very low 3
4 Aug after 29.9 °C 30 % 25 km/h 2.0 mm Low 5
5 Aug after 30.2 °C 24 % 40 km/h 0.0 mm Moderate 16
6 Aug after 31.9 °C 20 % 23 km/h 0.0 mm Moderate 17
7 Aug after 32.8 °C 13 % 32 km/h 0.0 mm High 28
8 Aug after 31.9 °C 13 % 47 km/h 0.0 mm High 34
9 Aug after 27.9 °C 26 % 44 km/h 1.6 mm Moderate 15
10 Aug after 30.3 °C 19 % 37 km/h 5.8 mm Low 6

Before and after, from space

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

Before · 17 Jul 2018
After · 31 Jul 2018

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 · 113Every 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 Ranch fire last?
It burned between 24 July 2018 and 24 July 2018: 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 1,642 hectares (16.4 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?
The fire only entered Coconino (1,624 ha, 0.0 %).
What was the weather like?
During the fire the temperature reached 32.8 °C, humidity dropped to 13 % and gusts hit 47 km/h. The fire danger index (FWI) reached 34, 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

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?

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.

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.