How long did the Reni fire last?

Copernicus dates it between 24 October 2022 and 27 October 2022: 4 days between the first and last image with fire.

How much area did it burn?

The perimeter Copernicus measured from satellite imagery is 956 hectares (9.6 km²). Official national figures may differ.

Which municipalities burned?

The fire only entered Reni (954 ha, 1.0 %).

Did the fire reach a town?

The closest fire to a town centre came within 9.7 km of Reni. That is the distance to the perimeter or nearest hotspot; it does not mean it entered the houses.

What was the weather like?

During the fire the temperature reached 24.1 °C, humidity dropped to 40 % and gusts hit 44 km/h. The fire danger index (FWI) reached 17, class Moderate.

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 · 2022-10-24 → 2022-10-27

Reni fire, 24 October 2022 Ренійський район · Reni

Out · last detection 28 Oct 2022, 23:52 UTC

The fire started on 24 October 2022 in Reni, Ukraine, and satellites saw it burning for 4 days. Copernicus mapped a burnt perimeter of 956 hectares from satellite imagery, spread across a single municipality.

It is the 8th largest in Odessa Oblast since 2016 (of 82 with a page). Number 40 in Ukraine in 2022, of 531.

Burnt area: 956ha; Copernicus perimeter
Duration: 4days; 24 Oct 2022 – 27 Oct 2022
Municipalities hit: 1; districts
Started on: 24 Oct; 2022
Heat detections: 67; in a single hotspot: 48 MW
Danger at start: 13; Moderate · FWI index
Energy released: 892MW; sum of detected power

Play back 28 Oct 2022

HOTSPOTS BY DAY 24 Oct27 Oct

How it evolved, day by day

2425262728

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

44km/h · peak gust

40%lowest humidity

It had gone 20 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

Reni Ренійський район 36,303 inhabitants · 9.7 km from the town where it started

954 ha reached on 23 Oct

1.0 %

Burnt area inside each municipality, 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.

What burned

Other natural land99 %
Agricultural areas0.8 %

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)
23 Oct	20.2 °C	53 %	44 km/h	0.8 mm	Moderate 13
24 Oct	21.9 °C	41 %	21 km/h	0.0 mm	Moderate 12
25 Oct	24.1 °C	40 %	27 km/h	0.0 mm	Moderate 16
26 Oct	20.3 °C	46 %	37 km/h	0.0 mm	Moderate 17
27 Oct	19.3 °C	45 %	21 km/h	0.0 mm	Moderate 14
28 Oct after	17.2 °C	50 %	21 km/h	0.0 mm	Moderate 13
29 Oct after	20.5 °C	43 %	22 km/h	0.0 mm	Moderate 14
30 Oct after	20.5 °C	51 %	24 km/h	0.0 mm	Moderate 14
31 Oct after	20.0 °C	47 %	39 km/h	0.6 mm	Moderate 16
1 Nov after	17.0 °C	46 %	19 km/h	0.0 mm	Moderate 12
2 Nov after	20.5 °C	48 %	24 km/h	0.0 mm	Moderate 13
3 Nov after	17.7 °C	44 %	34 km/h	0.0 mm	Moderate 15
4 Nov after	17.5 °C	54 %	36 km/h	0.0 mm	Moderate 16
5 Nov after	18.3 °C	63 %	41 km/h	0.0 mm	Moderate 15
6 Nov after	18.2 °C	59 %	41 km/h	0.0 mm	Moderate 16
7 Nov after	12.8 °C	62 %	27 km/h	0.0 mm	Moderate 11
8 Nov after	13.2 °C	59 %	19 km/h	0.0 mm	Low 10
9 Nov after	14.1 °C	62 %	23 km/h	0.0 mm	Low 10
10 Nov after	16.4 °C	52 %	23 km/h	0.0 mm	Moderate 11

Before and after, from space

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

↔

Before · 17 Oct 2022

After · 3 Nov 2022

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 25 October 2022 the air beside the fire reached 24 µg/m³ of PM2.5. That day averaged 15: 1.0 times the WHO daily guideline (15).

PM2.5 peak24 µg/m³

Days over the guideline0 days

PM1040 µg/m³

Optical depth0.30

WHO 15

2122232425262728293031123

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 · 67Every 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 Reni fire last?: Copernicus dates it between 24 October 2022 and 27 October 2022: 4 days between the first and last image with fire.
How much area did it burn?: The perimeter Copernicus measured from satellite imagery is 956 hectares (9.6 km²). Official national figures may differ.
Which municipalities burned?: The fire only entered Reni (954 ha, 1.0 %).
Did the fire reach a town?: The closest fire to a town centre came within 9.7 km of Reni. That is the distance to the perimeter or nearest hotspot; it does not mean it entered the houses.
What was the weather like?: During the fire the temperature reached 24.1 °C, humidity dropped to 40 % and gusts hit 44 km/h. The fire danger index (FWI) reached 17, class Moderate.
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

ДСНС · State Emergency Service ↗

Satellite cross-check

NASA FIRMS ↗
EFFIS · Copernicus ↗

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

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 101 · 112.

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