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Meyers Fire, July 2017 Granite, Ravalli, Beaverhead

Out · last detection 15 Jul 2017, 20:09 UTC

The fire started on 14 July 2017 in Granite, United States, and satellites saw it burning for 1 day. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 27,816 hectares, spread across 4 counties.

It is the 6th largest in Montana since 2016 (of 302 with a page). Number 23 in United States in 2017, of 619.

Burnt area
27,816ha
official perimeter (MTBS / NIFC)
Duration
1day
14 Jul 2017 – 14 Jul 2017
Municipalities hit
4
counties
Started on
14 Jul
2017
Heat detections
4,842
in a single hotspot: 1,236 MW
Danger at start
14
Moderate · FWI index
Energy released
1.2GW
sum of detected power

Where it burned

15 Jul 2017
HOTSPOTS BY DAY 14 Jul14 Jul

How it evolved, day by day

1415

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

The weather it burned in

25°high
57km/h · peak gust
19%lowest humidity

It had gone 0 days without rain (1 mm or more) when it started. Rain came after the fire: 1.4 mm on 27 Jul.

This area had burned before

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

What happened to each town

  1. Granite where it started
    19,401 ha reached on 14 Jul
    4.3 %
  2. Ravalli
    7,281 ha reached on 29 Aug
    1.2 %
  3. Beaverhead
    564 ha reached on 4 Sept
    0.0 %
  4. Deer Lodge
    401 ha reached on 1 Sept
    0.2 %

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)
14 Jul 24.8 °C 20 % 27 km/h 0.1 mm Moderate 14
15 Jul after 24.4 °C 24 % 45 km/h 0.1 mm Moderate 18
16 Jul after 19.6 °C 26 % 57 km/h 0.0 mm Moderate 21
17 Jul after 19.0 °C 24 % 45 km/h 0.0 mm Moderate 19
18 Jul after 20.8 °C 21 % 41 km/h 0.1 mm Moderate 19
19 Jul after 22.2 °C 21 % 32 km/h 0.9 mm Moderate 14
20 Jul after 20.8 °C 21 % 48 km/h 1.7 mm Low 11
21 Jul after 19.6 °C 19 % 48 km/h 0.0 mm Moderate 20
22 Jul after 21.5 °C 19 % 36 km/h 0.0 mm Moderate 20
23 Jul after 24.1 °C 20 % 41 km/h 0.1 mm High 24
24 Jul after 20.8 °C 27 % 62 km/h 0.3 mm High 27
25 Jul after 22.3 °C 17 % 43 km/h 0.2 mm High 26
26 Jul after 22.3 °C 22 % 45 km/h 0.8 mm Moderate 21
27 Jul after 20.1 °C 34 % 46 km/h 1.4 mm Moderate 12

Before and after, from space

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

Before · 7 Jul 2017
After · 21 Jul 2017

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 · 4,842Every 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 Meyers fire last?
It burned between 14 July 2017 and 14 July 2017: 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 27,816 hectares (278.2 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?
The fire entered 4 counties: Granite (19,401 ha, 4.3 %); Ravalli (7,281 ha, 1.2 %); Beaverhead (564 ha, 0.0 %); Deer Lodge (401 ha, 0.2 %).
What was the weather like?
During the fire the temperature reached 24.8 °C, humidity dropped to 19 % and gusts hit 57 km/h. The fire danger index (FWI) reached 21, class Moderate.
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.