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Nethker Fire, August 2019 Idaho

Out · last detection 5 Aug 2019, 20:29 UTC

The fire started on 4 August 2019 in Idaho, United States, and satellites saw it burning for 1 day. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 1,080 hectares, spread across a single county.

It is the 210th largest in Idaho since 2016 (of 379 with a page). Number 197 in United States in 2019, of 367.

Burnt area
1,080ha
official perimeter (MTBS / NIFC)
Duration
1day
4 Aug 2019 – 4 Aug 2019
Municipalities hit
1
counties
Started on
4 Aug
2019
Heat detections
102
in a single hotspot: 48 MW
Danger at start
28
High · FWI index
Energy released
44MW
sum of detected power

Where it burned

5 Aug 2019
HOTSPOTS BY DAY 4 Aug4 Aug

How it evolved, day by day

45

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

The weather it burned in

28°high
52km/h · peak gust
16%lowest humidity

It had gone one day 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
    1,066 ha reached on 4 Aug
    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)
4 Aug 27.4 °C 21 % 36 km/h 0.2 mm High 28
5 Aug after 28.4 °C 19 % 36 km/h 0.0 mm High 28
6 Aug after 27.3 °C 18 % 44 km/h 0.0 mm High 29
7 Aug after 28.4 °C 16 % 41 km/h 0.8 mm High 29
8 Aug after 23.0 °C 27 % 52 km/h 1.0 mm High 22
9 Aug after 22.8 °C 36 % 38 km/h 2.8 mm Low 6
10 Aug after 19.5 °C 44 % 34 km/h 7.3 mm Very low 1
11 Aug after 14.6 °C 66 % 48 km/h 12.5 mm Very low 0
12 Aug after 20.3 °C 31 % 34 km/h 0.0 mm Very low 2
13 Aug after 23.7 °C 26 % 33 km/h 0.0 mm Low 8
14 Aug after 24.5 °C 30 % 38 km/h 0.5 mm Moderate 13
15 Aug after 22.2 °C 34 % 39 km/h 0.5 mm Moderate 14
16 Aug after 21.8 °C 30 % 40 km/h 0.0 mm Moderate 15
17 Aug after 19.4 °C 37 % 40 km/h 0.0 mm Moderate 16
18 Aug after 24.7 °C 23 % 44 km/h 0.0 mm Moderate 20
19 Aug after 26.6 °C 24 % 43 km/h 0.0 mm Moderate 21
20 Aug after 28.7 °C 16 % 33 km/h 0.0 mm High 25
21 Aug after 27.0 °C 19 % 49 km/h 0.0 mm High 29
22 Aug after 17.0 °C 47 % 46 km/h 0.8 mm Moderate 13
23 Aug after 24.3 °C 26 % 35 km/h 0.0 mm Moderate 18
24 Aug after 25.0 °C 23 % 52 km/h 0.0 mm High 25
25 Aug after 19.0 °C 32 % 53 km/h 0.0 mm High 24

Before and after, from space

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

Before · 28 Jul 2019
After · 11 Aug 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 · 102Every 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 Nethker fire last?
It burned between 4 August 2019 and 4 August 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 1,080 hectares (10.8 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?
The fire only entered Idaho (1,066 ha, 0.0 %).
What was the weather like?
During the fire the temperature reached 28.4 °C, humidity dropped to 16 % and gusts hit 52 km/h. The fire danger index (FWI) reached 29, 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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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.