How long did the Holo Prystan fire last?

According to the heat detections seen by satellite inside the perimeter, it burned from 7 September 2021 to 8 September 2021 (2 days). The perimeter dates it from 8 September 2021 to 8 September 2021.

How much area did it burn?

The perimeter Copernicus measured from satellite imagery is 117 hectares (1.2 km²). Official national figures may differ.

What was the weather like?

During the fire the temperature reached 23.5 °C, humidity dropped to 29 % and gusts hit 26 km/h. The fire danger index (FWI) reached 23, class High.

Where does this data come from?

From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Ukraine (geoBoundaries). It is not an official report.

UA · Ukraine · 2021-09-07 → 2021-09-08

Holo Prystan fire, September 2021 Скадовський район · Ukraine

Out · last detection 8 Sept 2021, 11:17 UTC

The fire started on 7 September 2021 in Holo Prystan, Ukraine, and satellites saw it burning for 2 days. Copernicus mapped a burnt perimeter of 117 hectares from satellite imagery, spread across a single municipality.

This entry is probably an agricultural burn of stubble, meadow or peatland, not a wildfire. Before the war, stubble and meadows in Ukraine were burnt every spring and autumn, and the fire often got out of hand. This is our assumption, based on the time of year, ground with almost no woodland and the lack of news about this fire; it is not confirmed. That is why it is left out of the wildfire rankings.

The power measured by the satellite is low (15.3 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.

Compare with…

Suggestions: Holo Prystan · 2026 Holo Prystan · 2025 Holo Prystan · 2024 Holo Prystan · 2025

Burnt area: 117ha; Copernicus perimeter
Duration: 2days; 7 Sept 2021 – 8 Sept 2021
Municipalities hit: 0; districts
Started on: 7 Sept; 2021
Heat detections: 9; in a single hotspot: 15 MW
Danger at start: 23; High · FWI index
Average daily power: 76MW; detected power per day, on average

HOTSPOTS BY DAY 7 Sept8 Sept

How it evolved, day by day

8 Sept 2021 · 76 MW · 9

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

The weather it burned in

24°high

26km/h · peak gust

29%lowest humidity

It had gone 5 days without rain (1 mm or more) when it started. Rain came after the fire: 7.5 mm on 18 Sept.

This area had burned before

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

What burned

Other natural land98 %
Agricultural areas1.7 %

Land cover inside the perimeter as reported by Copernicus EFFIS (outside the Corine Land Cover area).

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 Sept	23.5 °C	29 %	26 km/h	0.0 mm	High 23
9 Sept after	25.4 °C	26 %	26 km/h	0.0 mm	High 25
10 Sept after	26.6 °C	27 %	28 km/h	0.0 mm	High 26
11 Sept after	27.6 °C	30 %	21 km/h	0.0 mm	High 25
12 Sept after	28.0 °C	30 %	20 km/h	0.0 mm	High 23
13 Sept after	25.9 °C	45 %	28 km/h	0.0 mm	High 24
14 Sept after	27.5 °C	39 %	28 km/h	0.0 mm	High 25
15 Sept after	25.8 °C	38 %	30 km/h	0.0 mm	High 26
16 Sept after	24.1 °C	27 %	25 km/h	0.0 mm	High 25
17 Sept after	24.2 °C	39 %	34 km/h	0.0 mm	High 28
18 Sept after	21.9 °C	72 %	48 km/h	7.5 mm	Very low 2

Before and after, from space

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

↔

Before · 31 Aug 2021

After · 15 Sept 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.

The smoke

CAMS · Copernicus

On 11 September 2021 the air beside the fire reached 20 µg/m³ of PM2.5. That day averaged 16: 1.1 times the WHO daily guideline (15).

PM2.5 peak20 µg/m³

Days over the guideline1 day

PM1026 µg/m³

WHO 15

67891011

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 · 9Every 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 Ukraine ›

Frequently asked questions

How long did the Holo Prystan fire last?: According to the heat detections seen by satellite inside the perimeter, it burned from 7 September 2021 to 8 September 2021 (2 days). The perimeter dates it from 8 September 2021 to 8 September 2021.
How much area did it burn?: The perimeter Copernicus measured from satellite imagery is 117 hectares (1.2 km²). Official national figures may differ.
What was the weather like?: During the fire the temperature reached 23.5 °C, humidity dropped to 29 % and gusts hit 26 km/h. The fire danger index (FWI) reached 23, class High.
Where does this data come from?: From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Ukraine (geoBoundaries). 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: 101 · 112 · Emergency number and official warnings ›

ДСНС · State Emergency Service ↗

Satellite cross-check

NASA FIRMS ↗
EFFIS · Copernicus ↗

History of this page Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.

No changes since 24 October 2026.

RSS Changes to this page

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

What do you think is wrong?

Dates or duration Place or towns Burned area Name It was not a wildfire Same fire as another page Something else

What really happened?

Your connection to the fire (optional) Email (optional)

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 101 · 112.

How we know this

Perimeter: EFFIS (Copernicus), mapped on satellite imagery.
Dates adjusted with the VIIRS detections inside the perimeter, which said 8 September 2021 to 8 September 2021. 9 Suomi-NPP VIIRS detections on those dates.
We have not matched this page with any official record.
Weather: Copernicus ERA5 reanalysis at the fire location, in cells of about 25 km.
Probably a vegetation burn: not counted in the totals.

How we build fire pages: methodology ›

Where this data comes from

The perimeter and land cover come from the Copernicus European Forest Fire Information System (EFFIS), measured on MODIS and Sentinel-2 imagery and published under CC BY 4.0. Heat detections come from the VIIRS sensors aboard Suomi-NPP and NOAA-20, distributed by NASA FIRMS at 375 m resolution. Municipal boundaries come from geoBoundaries ADM2 (Public Domain). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ slightly from each country’s official figure.

Where it burned