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Gap Fire, June 2019 Graham

Out · last detection 26 Jun 2019, 09:56 UTC

The fire started on 25 June 2019 in Graham, United States, and satellites saw it burning for 1 day. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 6,507 hectares, spread across a single county.

It is the 51th largest in Arizona since 2016 (of 380 with a page). Number 46 in United States in 2019, of 367.

Burnt area
6,507ha
official perimeter (MTBS / NIFC)
Duration
1day
25 Jun 2019 – 25 Jun 2019
Municipalities hit
1
counties
Started on
25 Jun
2019
Heat detections
16
in a single hotspot: 53 MW
Danger at start
54
Extreme · FWI index
Energy released
95MW
sum of detected power

Where it burned

26 Jun 2019
HOTSPOTS BY DAY 25 Jun25 Jun

How it evolved, day by day

2526

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

The weather it burned in

34°high
42km/h · peak gust
8%lowest humidity

It had gone 35 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

  1. Graham where it started
    6,547 ha reached on 25 Jun
    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)
25 Jun 33.5 °C 8 % 42 km/h 0.0 mm Extreme 54
26 Jun after 32.6 °C 14 % 35 km/h 0.0 mm Extreme 58
27 Jun after 34.3 °C 13 % 40 km/h 0.0 mm Extreme 61
28 Jun after 36.0 °C 12 % 40 km/h 0.0 mm Extreme 64
29 Jun after 36.4 °C 11 % 36 km/h 0.0 mm Extreme 54
30 Jun after 35.5 °C 15 % 51 km/h 0.6 mm Extreme 58
1 Jul after 34.4 °C 14 % 49 km/h 0.0 mm Extreme 60
2 Jul after 33.5 °C 12 % 48 km/h 0.0 mm Extreme 58
3 Jul after 33.2 °C 10 % 54 km/h 0.0 mm Extreme 60
4 Jul after 32.4 °C 10 % 43 km/h 0.0 mm Extreme 55
5 Jul after 32.9 °C 12 % 35 km/h 0.0 mm Extreme 52
6 Jul after 30.0 °C 23 % 27 km/h 0.3 mm Very high 40

Before and after, from space

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

Before · 18 Jun 2019
After · 2 Jul 2019

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 · 16Every 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 Gap fire last?
It burned between 25 June 2019 and 25 June 2019: 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 6,507 hectares (65.1 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?
The fire only entered Graham (6,547 ha, 0.5 %).
What was the weather like?
During the fire the temperature reached 33.5 °C, humidity dropped to 8 % and gusts hit 42 km/h. The fire danger index (FWI) reached 58, 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.

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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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.