How long did the Maroon Fire last?

The official perimeter only gives the start date (16 May 2019). The end comes from the heat detections inside the perimeter: it burned until 14 June 2019 (30 days from 16 May 2019), 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 3,482 hectares (34.8 km²). Other tallies, such as daily incident reports, may give slightly different figures.

Which counties burned?

The fire only entered Coconino (3,468 ha, 0.1 %).

What was the weather like?

During the fire the temperature reached 31.3 °C, humidity dropped to 10 % and gusts hit 93 km/h. The fire danger index (FWI) reached 49, 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 · 2019-05-16 → 2019-06-14

Maroon Fire, May 2019 Coconino

Out · last detection 14 Jun 2019, 20:00 UTC

The fire started on 16 May 2019 in Coconino, United States, and satellites saw it burning for 30 days. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 3,482 hectares, spread across a single county.

It is the 93th largest in Arizona since 2016 (of 380 with a page). Number 79 in United States in 2019, of 367.

Compare with…

Suggestions: Tunnel · 2022 Pipeline · 2022

Burnt area: 3,482ha; official perimeter (MTBS / NIFC)
Duration: ≈ 30days; 16 May 2019 – 14 Jun 2019
Counties hit: 1; counties
Started on: 16 May; 2019
Heat detections: 216; in a single hotspot: 89 MW
Danger at start: 32; High · FWI index
Average daily power: 140MW; detected power per day, on average

HOTSPOTS BY DAY 16 May14 Jun

Play back 14 Jun 2019

How it evolved, day by day

19 May 26 May 31 May 2 Jun 3 Jun 7 Jun 13 Jun

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

The weather it burned in

31°high

93km/h · peak gust

10%lowest humidity

It had gone 4 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?

It burned the equivalent of 2.2% of the area of London (35 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

Coconino where it started

3,468 ha reached on 19 May

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.

People and buildings inside the perimeter

GHSL 2020

Built-up area< 0.1 ha

Residents< 20

Inside the perimeter there was no noticeable built-up land and almost nobody lived there (GHSL 2020, 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.

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)

Day	High	Min. humidity	Peak gust	Rain	Danger (FWI)
16 May	21.0 °C	16 %	86 km/h	0.5 mm	High 32
17 May	15.4 °C	23 %	71 km/h	0.7 mm	Moderate 20
18 May	18.8 °C	15 %	46 km/h	0.0 mm	Moderate 19
19 May	14.2 °C	30 %	93 km/h	6.0 mm	Low 5
20 May	7.0 °C	60 %	59 km/h	3.5 mm	Very low 0
21 May	11.3 °C	39 %	84 km/h	0.0 mm	Low 6
22 May	10.1 °C	48 %	59 km/h	2.8 mm	Very low 2
23 May	9.9 °C	53 %	63 km/h	3.6 mm	Very low 1
24 May	18.6 °C	18 %	42 km/h	0.0 mm	Very low 4
25 May	20.3 °C	14 %	54 km/h	0.0 mm	Moderate 16
26 May	17.6 °C	21 %	72 km/h	0.1 mm	High 22
27 May	10.8 °C	36 %	77 km/h	5.5 mm	Very low 2
28 May	16.0 °C	30 %	40 km/h	0.3 mm	Very low 3
29 May	18.3 °C	35 %	26 km/h	2.4 mm	Very low 1
30 May	19.9 °C	31 %	27 km/h	0.6 mm	Very low 4
31 May	24.6 °C	16 %	42 km/h	0.0 mm	Moderate 16
1 Jun	23.6 °C	17 %	55 km/h	0.2 mm	High 23
2 Jun	22.9 °C	19 %	52 km/h	0.7 mm	Moderate 20
3 Jun	25.1 °C	19 %	34 km/h	2.2 mm	Low 7
4 Jun	23.4 °C	23 %	35 km/h	2.1 mm	Very low 5
5 Jun	25.9 °C	16 %	31 km/h	0.0 mm	Moderate 17
6 Jun	27.8 °C	18 %	42 km/h	0.0 mm	High 25
7 Jun	26.4 °C	17 %	56 km/h	0.2 mm	High 31
8 Jun	26.9 °C	13 %	42 km/h	0.0 mm	High 29
9 Jun	24.7 °C	15 %	37 km/h	0.0 mm	High 30
10 Jun	29.6 °C	13 %	38 km/h	0.0 mm	High 32
11 Jun	30.3 °C	12 %	33 km/h	0.0 mm	High 32
12 Jun	31.3 °C	10 %	40 km/h	0.0 mm	High 35
13 Jun	29.9 °C	12 %	53 km/h	0.0 mm	Very high 46
14 Jun	28.1 °C	10 %	55 km/h	0.0 mm	Very high 49
15 Jun after	27.7 °C	18 %	42 km/h	0.0 mm	Very high 41
16 Jun after	27.6 °C	17 %	41 km/h	0.4 mm	High 37
17 Jun after	26.8 °C	15 %	41 km/h	0.0 mm	Very high 40
18 Jun after	28.0 °C	14 %	32 km/h	0.1 mm	High 37
19 Jun after	29.5 °C	12 %	43 km/h	0.0 mm	Very high 46
20 Jun after	28.4 °C	8 %	65 km/h	0.0 mm	Extreme 60
21 Jun after	26.7 °C	13 %	72 km/h	0.0 mm	Extreme 63
22 Jun after	23.3 °C	14 %	52 km/h	0.1 mm	Very high 48
23 Jun after	25.0 °C	11 %	37 km/h	0.0 mm	Very high 42
24 Jun after	28.8 °C	9 %	34 km/h	0.0 mm	Very high 45

Before and after, from space

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

↔

Before · 9 May 2019

After · 21 Jun 2019

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 · 216Every 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 Maroon Fire last?: The official perimeter only gives the start date (16 May 2019). The end comes from the heat detections inside the perimeter: it burned until 14 June 2019 (30 days from 16 May 2019), 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 3,482 hectares (34.8 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?: The fire only entered Coconino (3,468 ha, 0.1 %).
What was the weather like?: During the fire the temperature reached 31.3 °C, humidity dropped to 10 % and gusts hit 93 km/h. The fire danger index (FWI) reached 49, 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.

RSS Changes to this page

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?

Dates or duration Place or towns Burned area Name It was not a wildfire Same fire as another page Something else

What really happened?

Your connection to the fire (optional) Email (optional)

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. 216 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 2020, 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.

Where it burned