Union Fire, June 2019 Pershing
The fire started on 25 June 2019 in Pershing, United States, and satellites saw it burning for 1 day. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 524 hectares, spread across a single county.
It is the 214th largest in Nevada since 2016 (of 237 with a page). Number 313 in United States in 2019, of 367.
The power measured by the satellite is low (5.6 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
- 524ha
- official perimeter (MTBS / NIFC)
- Duration
- 1day
- 25 Jun 2019 – 25 Jun 2019
- Municipalities hit
- 1
- counties
- Started on
- 25 Jun
- 2019
- Heat detections
- 3
- in a single hotspot: 6 MW
- Danger at start
- 47
- Very high · FWI index
- Energy released
- 12MW
- sum of detected power
Where it burned
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
It had gone 25 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
-
Pershing where it started526 ha reached on 25 Jun0.0 %
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) |
|---|---|---|---|---|---|
| 25 Jun | 29.7 °C | 10 % | 51 km/h | 0.0 mm | Very high 47 |
| 26 Jun after | 28.2 °C | 10 % | 66 km/h | 0.0 mm | Extreme 55 |
| 27 Jun after | 25.4 °C | 9 % | 53 km/h | 0.0 mm | Very high 50 |
| 28 Jun after | 23.5 °C | 12 % | 44 km/h | 0.0 mm | Very high 45 |
| 29 Jun after | 28.1 °C | 10 % | 29 km/h | 0.0 mm | Very high 40 |
| 30 Jun after | 30.1 °C | 10 % | 33 km/h | 0.0 mm | Very high 46 |
| 1 Jul after | 30.7 °C | 8 % | 36 km/h | 0.0 mm | Very high 50 |
| 2 Jul after | 29.0 °C | 13 % | 40 km/h | 0.0 mm | Extreme 50 |
| 3 Jul after | 27.0 °C | 13 % | 35 km/h | 0.0 mm | Very high 46 |
| 4 Jul after | 27.9 °C | 13 % | 35 km/h | 0.0 mm | Very high 46 |
| 5 Jul after | 32.0 °C | 10 % | 21 km/h | 0.0 mm | Very high 41 |
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
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 · 3Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 5,244 haRock Hill PershingAugust 2016 · 4 days · 9 km away
- 991 haQuartz PershingMay 2026 · 1 day · 16 km away
- 8,842 haPershingJuly 2017 · 1 day · 19 km away
- 7,116 haBarber PershingJuly 2025 · 1 day · 22 km away
- 5,941 haLimerick PershingJuly 2017 · 1 day · 35 km away
- 1,351 haBarrett Springs HumboldtJuly 2017 · 1 day · 35 km away
Frequently asked questions
- How long did the Union fire last?
- It burned between 25 June 2019 and 25 June 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 524 hectares (5.2 km²). Other tallies, such as daily incident reports, may give slightly different figures.
- Which counties burned?
- The fire only entered Pershing (526 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 29.7 °C, humidity dropped to 10 % and gusts hit 51 km/h. The fire danger index (FWI) reached 47, 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
- NIFC · National Interagency Fire Center ↗
- InciWeb · Incident Information System ↗
- MTBS · Monitoring Trends in Burn Severity ↗
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.
Report an error
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.