How long did the Bender Mountain fire last?

It burned between 3 September 2018 and 3 September 2018: 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 1,535 hectares (15.4 km²). Other tallies, such as daily incident reports, may give slightly different figures.

Which counties burned?

The fire entered 2 counties: Daggett (1,045 ha, 0.6 %); Moffat (497 ha, 0.0 %).

What was the weather like?

During the fire the temperature reached 26.2 °C, humidity dropped to 4 % and gusts hit 68 km/h. The fire danger index (FWI) reached 71, class Very 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.

US · United States · 2018-09-03 → 2018-09-03

Bender Mountain Fire, September 2018 Daggett, Moffat

Out · last detection 4 Sept 2018, 20:08 UTC

The fire started on 3 September 2018 in Daggett, United States, and satellites saw it burning for 1 day. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 1,535 hectares, spread across 2 counties.

It is the 85th largest in Utah since 2016 (of 165 with a page). Number 248 in United States in 2018, of 511.

Burnt area: 1,535ha; official perimeter (MTBS / NIFC)
Duration: 1day; 3 Sept 2018 – 3 Sept 2018
Municipalities hit: 2; counties
Started on: 3 Sept; 2018
Heat detections: 129; in a single hotspot: 219 MW
Danger at start: 49; Very high · FWI index
Energy released: 2.3GW; sum of detected power

Play back 4 Sept 2018

HOTSPOTS BY DAY 3 Sept3 Sept

How it evolved, day by day

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

The weather it burned in

26°high

68km/h · peak gust

4%lowest humidity

It had gone 8 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

Daggett where it started

1,045 ha reached on 3 Sept

0.6 %
Moffat

497 ha reached on 4 Sept

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)
3 Sept	23.9 °C	5 %	39 km/h	0.0 mm	Very high 49
4 Sept after	23.5 °C	8 %	40 km/h	0.0 mm	Very high 48
5 Sept after	22.4 °C	15 %	23 km/h	0.0 mm	Very high 42
6 Sept after	24.0 °C	10 %	26 km/h	0.0 mm	Very high 42
7 Sept after	25.1 °C	9 %	35 km/h	0.0 mm	Very high 46
8 Sept after	23.4 °C	16 %	48 km/h	0.1 mm	Very high 49
9 Sept after	24.1 °C	7 %	36 km/h	0.0 mm	Very high 48
10 Sept after	26.2 °C	7 %	45 km/h	0.0 mm	Extreme 55
11 Sept after	25.0 °C	9 %	51 km/h	0.0 mm	Extreme 57
12 Sept after	24.8 °C	6 %	68 km/h	0.0 mm	Extreme 69
13 Sept after	23.7 °C	6 %	67 km/h	0.0 mm	Extreme 68
14 Sept after	23.8 °C	4 %	55 km/h	0.0 mm	Extreme 63
15 Sept after	25.5 °C	9 %	67 km/h	0.0 mm	Very extreme 71
16 Sept after	25.2 °C	14 %	56 km/h	0.0 mm	Extreme 59
17 Sept after	24.8 °C	12 %	50 km/h	0.0 mm	Extreme 55
18 Sept after	25.0 °C	10 %	61 km/h	0.0 mm	Extreme 62
19 Sept after	21.9 °C	8 %	59 km/h	0.0 mm	Extreme 62
20 Sept after	17.9 °C	10 %	56 km/h	0.0 mm	Extreme 60
21 Sept after	20.5 °C	8 %	32 km/h	0.0 mm	Very high 44
22 Sept after	22.6 °C	7 %	49 km/h	0.0 mm	Extreme 56
23 Sept after	20.4 °C	14 %	59 km/h	0.0 mm	Extreme 59
24 Sept after	19.7 °C	11 %	60 km/h	0.4 mm	Extreme 58
25 Sept after	14.4 °C	10 %	41 km/h	0.0 mm	Very high 42

Before and after, from space

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

↔

Before · 27 Aug 2018

After · 10 Sept 2018

Before After

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 · 129Every 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 time	Satellite	FRP (MW)	Lat	Lon

Other fires nearby

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Frequently asked questions

How long did the Bender Mountain fire last?: It burned between 3 September 2018 and 3 September 2018: 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 1,535 hectares (15.4 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?: The fire entered 2 counties: Daggett (1,045 ha, 0.6 %); Moffat (497 ha, 0.0 %).
What was the weather like?: During the fire the temperature reached 26.2 °C, humidity dropped to 4 % and gusts hit 68 km/h. The fire danger index (FWI) reached 71, class Very 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

NASA FIRMS ↗
NIFC · Fire maps ↗

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.

Where it burned