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Ross Fork Fire, 9 August 2022 Bannock, Bingham

Out · last measured on 9 Aug 2022

The fire started on 9 August 2022 in Bannock, United States, and satellites saw it burning for 1 day. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 2,491 hectares, spread across 2 counties.

It is the 118th largest in Idaho since 2016 (of 379 with a page). Number 173 in United States in 2022, of 493.

Burnt area
2,491ha
official perimeter (MTBS / NIFC)
Duration
1day
9 Aug 2022 – 9 Aug 2022
Municipalities hit
2
counties
Started on
9 Aug
2022
Heat detections
19
in a single hotspot: 109 MW
Danger at start
33
High · FWI index

Where it burned

HOTSPOTS BY DAY 9 Aug9 Aug

The weather it burned in

38°high
68km/h · peak gust
9%lowest humidity

It had gone 2 days without rain (1 mm or more) when it started. Rain came after the fire: 3.0 mm on 13 Sept.

This area had burned before

9% of the perimeter overlaps earlier fires recorded since 2016: 231 ha in 2018.

What happened to each town

  1. Bannock where it started
    2,013 ha reached on 2 Sept
    0.7 %
  2. Bingham
    480 ha
    0.1 %

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)
9 Aug 34.5 °C 15 % 19 km/h 0.0 mm High 33
10 Aug after 32.1 °C 26 % 33 km/h 3.1 mm Moderate 13
11 Aug after 31.1 °C 34 % 20 km/h 0.0 mm Moderate 19
12 Aug after 32.7 °C 33 % 25 km/h 1.6 mm Moderate 17
13 Aug after 31.3 °C 32 % 25 km/h 0.6 mm High 22
14 Aug after 31.3 °C 22 % 32 km/h 0.0 mm High 29
15 Aug after 32.9 °C 14 % 20 km/h 0.0 mm High 33
16 Aug after 34.5 °C 13 % 21 km/h 0.0 mm High 36
17 Aug after 35.3 °C 15 % 21 km/h 0.0 mm High 38
18 Aug after 34.4 °C 18 % 23 km/h 0.2 mm Very high 38
19 Aug after 32.3 °C 21 % 44 km/h 0.7 mm High 38
20 Aug after 27.9 °C 38 % 28 km/h 2.2 mm Low 11
21 Aug after 31.5 °C 23 % 23 km/h 0.0 mm High 28
22 Aug after 32.0 °C 22 % 20 km/h 0.1 mm High 31
23 Aug after 32.4 °C 20 % 24 km/h 0.0 mm High 33
24 Aug after 31.6 °C 21 % 39 km/h 0.5 mm Very high 44
25 Aug after 32.2 °C 17 % 35 km/h 0.0 mm Very high 39
26 Aug after 30.9 °C 19 % 52 km/h 0.2 mm Very high 48
27 Aug after 30.1 °C 18 % 66 km/h 0.7 mm Extreme 52
28 Aug after 27.7 °C 17 % 48 km/h 0.0 mm Very high 43
29 Aug after 30.9 °C 15 % 28 km/h 0.0 mm High 38
30 Aug after 34.3 °C 14 % 29 km/h 0.0 mm Very high 42
31 Aug after 35.6 °C 14 % 27 km/h 0.0 mm Very high 42
1 Sept after 34.5 °C 9 % 50 km/h 0.0 mm Extreme 61
2 Sept after 33.6 °C 11 % 20 km/h 0.0 mm Very high 46
3 Sept after 37.2 °C 9 % 31 km/h 0.0 mm Very high 50
4 Sept after 35.5 °C 12 % 50 km/h 0.0 mm Extreme 64
5 Sept after 35.3 °C 11 % 46 km/h 0.0 mm Extreme 61
6 Sept after 36.6 °C 12 % 24 km/h 0.0 mm Very high 49
7 Sept after 37.8 °C 11 % 42 km/h 0.2 mm Extreme 60
8 Sept after 30.3 °C 16 % 68 km/h 0.1 mm Extreme 68
9 Sept after 22.7 °C 16 % 39 km/h 0.0 mm Very high 48
10 Sept after 24.8 °C 19 % 21 km/h 0.0 mm Very high 39
11 Sept after 29.1 °C 13 % 23 km/h 0.0 mm Very high 39
12 Sept after 31.1 °C 10 % 20 km/h 0.0 mm Very high 44
13 Sept after 23.1 °C 20 % 34 km/h 3.0 mm Moderate 12

Before and after, from space

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

Before · 2 Aug 2022
After · 16 Aug 2022

If the day is cloudy, change the date: each satellite passes once a day. In false colour the burnt ground looks brown or red.

The smoke

CAMS · Copernicus

On 11 August 2022 the air beside the fire reached 99 µg/m³ of PM2.5. That day averaged 47: 3.2 times the WHO daily guideline (15).

PM2.5 peak99 µg/m³
Days over the guideline2 days
PM10142 µg/m³
Optical depth0.98
789101112
Good Fair Moderate Poor Very poor Extremely poor

Particles from the Copernicus CAMS model at the centre of the perimeter; these are not measurements in each town. The pale bar is the worst hour, the solid one the daily average.

Open-Meteo.com (CC BY 4.0) · Copernicus Atmosphere Monitoring Service (CAMS)

Detections table · 19Every 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 Ross Fork fire last?
It burned between 9 August 2022 and 9 August 2022: 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 2,491 hectares (24.9 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?
The fire entered 2 counties: Bannock (2,013 ha, 0.7 %); Bingham (480 ha, 0.1 %).
What was the weather like?
During the fire the temperature reached 37.8 °C, humidity dropped to 9 % and gusts hit 68 km/h. The fire danger index (FWI) reached 68, 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.