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Hidden Fire, July 2017 Idaho

Out · last measured on 10 Jul 2017

The fire started on 10 July 2017 in Idaho, United States, and satellites saw it burning for 1 day. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 5,400 hectares, spread across a single county.

It is the 69th largest in Idaho since 2016 (of 379 with a page). Number 142 in United States in 2017, of 619.

Burnt area
5,400ha
official perimeter (MTBS / NIFC)
Duration
1day
10 Jul 2017 – 10 Jul 2017
Municipalities hit
1
counties
Started on
10 Jul
2017
Heat detections
2
in a single hotspot: 2 MW
Danger at start
6
Low · FWI index

Where it burned

HOTSPOTS BY DAY 10 Jul10 Jul

The weather it burned in

30°high
49km/h · peak gust
16%lowest humidity

It had gone 0 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. Idaho where it started
    5,434 ha reached on 15 Jul
    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)
10 Jul 22.0 °C 33 % 49 km/h 2.8 mm Low 6
11 Jul after 20.9 °C 26 % 43 km/h 0.0 mm Moderate 14
12 Jul after 24.6 °C 16 % 39 km/h 0.0 mm High 23
13 Jul after 27.3 °C 17 % 48 km/h 1.3 mm Moderate 20
14 Jul after 29.9 °C 17 % 32 km/h 0.0 mm High 26
15 Jul after 27.0 °C 22 % 42 km/h 1.3 mm Moderate 17
16 Jul after 21.1 °C 20 % 53 km/h 0.7 mm High 23
17 Jul after 22.4 °C 15 % 43 km/h 0.0 mm High 29
18 Jul after 24.8 °C 15 % 45 km/h 0.0 mm High 31
19 Jul after 26.0 °C 16 % 34 km/h 0.0 mm High 28
20 Jul after 23.2 °C 21 % 56 km/h 0.3 mm High 35
21 Jul after 22.9 °C 12 % 52 km/h 0.0 mm High 36
22 Jul after 25.1 °C 20 % 31 km/h 0.0 mm High 31
23 Jul after 27.8 °C 16 % 44 km/h 0.0 mm High 35
24 Jul after 25.3 °C 15 % 56 km/h 0.0 mm Very high 40
25 Jul after 26.4 °C 8 % 41 km/h 0.0 mm Very high 40

Before and after, from space

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

Before · 3 Jul 2017
After · 17 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 · 2Every 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 Hidden fire last?
It burned between 10 July 2017 and 10 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 5,400 hectares (54.0 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?
The fire only entered Idaho (5,434 ha, 0.2 %).
What was the weather like?
During the fire the temperature reached 29.9 °C, humidity dropped to 16 % and gusts hit 49 km/h. The fire danger index (FWI) reached 26, 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.

Report an error
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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.