How long did the Barber fire last?

It burned between 4 July 2025 and 4 July 2025: 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 7,116 hectares (71.2 km²). Other tallies, such as daily incident reports, may give slightly different figures.

Which counties burned?

The fire only entered Pershing (7,123 ha, 0.4 %).

What was the weather like?

During the fire the temperature reached 28.9 °C, humidity dropped to 11 % and gusts hit 49 km/h. The fire danger index (FWI) reached 57, 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.

US · United States · 2025-07-04 → 2025-07-04

Barber Fire, July 2025 Pershing

Out · last detection 4 Jul 2025, 10:47 UTC

The fire started on 4 July 2025 in Pershing, United States, and satellites saw it burning for 1 day. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 7,116 hectares, spread across a single county.

It is the 40th largest in Nevada since 2016 (of 237 with a page). Number 59 in United States in 2025, of 327.

The power measured by the satellite is low (5.1 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.

Burnt area: 7,116ha; official perimeter (MTBS / NIFC)
Duration: 1day; 4 Jul 2025 – 4 Jul 2025
Municipalities hit: 1; counties
Started on: 4 Jul; 2025
Heat detections: 59; in a single hotspot: 5 MW
Danger at start: 57; Extreme · FWI index
Energy released: 169MW; sum of detected power

HOTSPOTS BY DAY 4 Jul4 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

29°high

49km/h · peak gust

11%lowest humidity

It had gone 12 days without rain (1 mm or more) when it started.

This area had burned before

74% of the perimeter overlaps earlier fires recorded since 2016: 597 ha in 2016, 4,734 ha in 2017.

What happened to each town

Pershing where it started

7,123 ha reached on 4 Jul

0.4 %

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 Jul	28.9 °C	11 %	49 km/h	0.4 mm	Extreme 57
5 Jul after	29.4 °C	12 %	29 km/h	0.0 mm	Very high 48
6 Jul after	33.1 °C	11 %	32 km/h	0.0 mm	Extreme 50
7 Jul after	36.0 °C	4 %	32 km/h	0.0 mm	Extreme 56
8 Jul after	34.2 °C	6 %	38 km/h	0.0 mm	Extreme 59
9 Jul after	31.2 °C	7 %	55 km/h	0.0 mm	Extreme 69
10 Jul after	31.7 °C	14 %	29 km/h	0.0 mm	Extreme 50
11 Jul after	33.9 °C	14 %	27 km/h	0.0 mm	Extreme 51
12 Jul after	36.4 °C	10 %	30 km/h	0.0 mm	Extreme 52
13 Jul after	38.1 °C	8 %	31 km/h	0.0 mm	Extreme 52
14 Jul after	38.5 °C	7 %	31 km/h	0.0 mm	Extreme 53

Before and after, from space

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

↔

Before · 27 Jun 2025

After · 11 Jul 2025

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.

The smoke

CAMS · Copernicus

On 2 July 2025 the air beside the fire reached 19 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak19 µg/m³

Days over the guideline0 days

PM10102 µg/m³

Optical depth0.30

WHO 15

234567

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 · 59Every 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 Barber fire last?: It burned between 4 July 2025 and 4 July 2025: 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 7,116 hectares (71.2 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?: The fire only entered Pershing (7,123 ha, 0.4 %).
What was the weather like?: During the fire the temperature reached 28.9 °C, humidity dropped to 11 % and gusts hit 49 km/h. The fire danger index (FWI) reached 57, 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

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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What really happened?

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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.

Where it burned