How long did the Mud Lick fire last?

It burned between 8 July 2021 and 8 July 2021: 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 8,510 hectares (85.1 km²). Other tallies, such as daily incident reports, may give slightly different figures.

Which counties burned?

The fire only entered Lemhi (8,534 ha, 0.7 %).

What was the weather like?

During the fire the temperature reached 31.8 °C, humidity dropped to 12 % and gusts hit 66 km/h. The fire danger index (FWI) reached 41, class Very 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.

US · United States · 2021-07-08 → 2021-07-08

Mud Lick Fire, July 2021 Lemhi

Out · last detection 9 Jul 2021, 20:28 UTC

The fire started on 8 July 2021 in Lemhi, United States, and satellites saw it burning for 1 day. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 8,510 hectares, spread across a single county.

It is the 42th largest in Idaho since 2016 (of 379 with a page). Number 65 in United States in 2021, of 385.

Burnt area: 8,510ha; official perimeter (MTBS / NIFC)
Duration: 1day; 8 Jul 2021 – 8 Jul 2021
Municipalities hit: 1; counties
Started on: 8 Jul; 2021
Heat detections: 1,769; in a single hotspot: 421 MW
Danger at start: 31; High · FWI index
Energy released: 376MW; sum of detected power

Play back 9 Jul 2021

HOTSPOTS BY DAY 8 Jul8 Jul

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

32°high

66km/h · peak gust

12%lowest humidity

It had gone 0 days without rain (1 mm or more) when it started. Rain came after the fire: 2.0 mm on 5 Aug.

This area had burned before

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

What happened to each town

Lemhi where it started

8,534 ha reached on 8 Jul

0.7 %

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)
8 Jul	29.8 °C	12 %	40 km/h	0.0 mm	High 31
9 Jul after	28.8 °C	15 %	37 km/h	0.0 mm	High 33
10 Jul after	31.5 °C	14 %	34 km/h	0.0 mm	High 34
11 Jul after	31.1 °C	16 %	49 km/h	0.0 mm	Very high 39
12 Jul after	31.4 °C	13 %	38 km/h	0.0 mm	High 38
13 Jul after	29.1 °C	16 %	38 km/h	0.0 mm	High 38
14 Jul after	30.4 °C	16 %	26 km/h	0.2 mm	High 35
15 Jul after	30.1 °C	13 %	42 km/h	0.2 mm	Very high 40
16 Jul after	27.9 °C	20 %	36 km/h	0.9 mm	High 26
17 Jul after	30.5 °C	12 %	45 km/h	0.0 mm	Very high 41
18 Jul after	31.8 °C	13 %	48 km/h	0.0 mm	Very high 41
19 Jul after	24.1 °C	32 %	37 km/h	3.0 mm	Low 6
20 Jul after	26.1 °C	35 %	38 km/h	4.6 mm	Very low 4
21 Jul after	27.8 °C	24 %	66 km/h	0.3 mm	Moderate 20
22 Jul after	28.9 °C	16 %	55 km/h	0.0 mm	High 33
23 Jul after	28.5 °C	16 %	43 km/h	0.0 mm	High 32
24 Jul after	30.2 °C	17 %	26 km/h	0.0 mm	High 31
25 Jul after	30.9 °C	16 %	39 km/h	0.0 mm	High 33
26 Jul after	31.8 °C	19 %	37 km/h	0.1 mm	High 33
27 Jul after	28.3 °C	25 %	46 km/h	0.4 mm	High 32
28 Jul after	29.1 °C	29 %	30 km/h	1.5 mm	Moderate 15
29 Jul after	29.9 °C	27 %	27 km/h	1.1 mm	Moderate 19
30 Jul after	30.6 °C	21 %	33 km/h	0.0 mm	High 30
31 Jul after	27.4 °C	32 %	50 km/h	6.9 mm	Low 5
1 Aug after	26.5 °C	48 %	33 km/h	9.0 mm	Very low 1
2 Aug after	23.4 °C	45 %	43 km/h	0.0 mm	Very low 4
3 Aug after	29.4 °C	20 %	33 km/h	0.1 mm	Moderate 17
4 Aug after	29.6 °C	22 %	44 km/h	0.9 mm	Moderate 18
5 Aug after	24.8 °C	31 %	36 km/h	2.0 mm	Low 7

Before and after, from space

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

↔

Before · 1 Jul 2021

After · 15 Jul 2021

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 · 1,769Every 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

All fires in United States ›

Frequently asked questions

How long did the Mud Lick fire last?: It burned between 8 July 2021 and 8 July 2021: 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 8,510 hectares (85.1 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?: The fire only entered Lemhi (8,534 ha, 0.7 %).
What was the weather like?: During the fire the temperature reached 31.8 °C, humidity dropped to 12 % and gusts hit 66 km/h. The fire danger index (FWI) reached 41, class Very 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

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