Burned area
satellite only285ha
Perimeter published by EFFIS (Copernicus).
- Source
- EFFIS (Copernicus)
- Date
- perimeter revised on 11 July 2023
+− cross-check
No official record is matched to this page to compare it with.
UA · Ukraine · –
Kiliia fire, 9 February 2023 Кілійський район · Kiliia
Out · last detection 9 Feb 2023, 10:46 UTC
The fire started on 9 February 2023 in Kiliia, Ukraine, and satellites saw it burning for 4 days. Copernicus mapped a burnt perimeter of 285 hectares from satellite imagery, spread across a single municipality.
This record is fire in the reed beds of the Danube Delta, not a forest fire. Thousands of hectares of reed burn in the delta every year, mostly between January and April, and many of these burns are deliberate. That is why it is left out of the fire rankings.
The power measured by the satellite is low (11.2 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.
Use this data
Compare with…
Use this data
Fire page data · version 2026-10-24matches the official recordwith caveatssatellite onlymodel
When copying, the sentence is
Tick the figures you want: they make up the lede and the CSV.
Duration by satellite
satellite only4days
9 Feb 2023 to 12 Feb 2023: first and last day with fire on the page.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 9 Feb 2023, 10:46 UTC
+− cross-check
Satellites pass a few times a day and cloud or smoke can hide the fire: a lack of detections is not an official extinction. Each country’s emergency service declares a fire contained or out.
Start
satellite only9 Feb 2023
First day with fire seen by the satellites or the perimeter.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 9 Feb 2023
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only4
VIIRS detections at 375 m. Most intense hotspot: 11 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 9 Feb 2023 – 12 Feb 2023
+− cross-check
There is no official record to compare with. Each hotspot is a pixel detected in one satellite pass, not a separate fire.
The worst day
satellite only32MW
Total radiative power on 9 February 2023; hotspots that day: 4.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 9 Feb 2023
+− cross-check
Fire radiative power (FRP) measures the energy the fire gives off when the satellite passes. Added up by day, it compares intensity, not area.
Danger at the start
model0.8FWI · very low
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 4.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 9 Feb 2023, local noon
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
This is an index computed from weather model data, not a measurement of the fire nor an official warning. Danger warnings are issued by each country’s authority. Emergency number and official warnings
Weather during the fire
model5.6°C · 59% RH
High of 5.6 °C and minimum humidity of 59% on 12 February 2023; gusts of 40 km/h on 12 February 2023.
- Source
- weather model at the fire’s grid cell
- Date
- 9 Feb 2023 – 12 Feb 2023
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
These are model values for a cell of about 25 km, not from a weather station: they may differ from what was measured on the ground.
This page’s change log has been kept since 24 October 2026: every night what it publishes is compared and the difference is logged. Anything earlier is reconstructed from each source’s date and marked as reconstructed.
Show
-
· reconstructed weatherWeather and FWI computed from the ERA5 reanalysis
-
· reconstructed perimeterEFFIS (Copernicus) revises the perimeter
What was saved on 24 October 2026
Every night a snapshot of what the page shows is saved. If anything changes, it appears in the list as a log entry.
- Area
- 285 ha
- Dates
- 9 Feb 2023 – 12 Feb 2023
- Name
- Kiliia
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/kiliia-2023-02?v=2026-10-24A version keeps the area, dates, name and official record; the area as it was logged (changes under 2% are not logged). The map, hotspots and weather always show today’s data.
Citation
A lede of about 60 words figures only, no adjectives
CSV for this fire kiliia-2023-02.csv · daily, no individual hotspots
| fecha | focos_viirs | frp_mw | tmax_c | tmin_c | hr_min_pct | viento_max_kmh | racha_max_kmh | precip_mm | fwi | clase_fwi | dentro_del_incendio |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023-02-09 | 4 | 32 | -0.1 | -6.9 | 55 | 22.9 | 36 | 0 | 0.8 | muy_bajo | 1 |
| 2023-02-10 | 0 | 0 | 1.4 | -8.1 | 45 | 12 | 23 | 0 | 0.6 | muy_bajo | 1 |
| 2023-02-11 | 0 | 0 | 3.2 | -7.7 | 53 | 15.1 | 25.9 | 0 | 0.8 | muy_bajo | 1 |
| 2023-02-12 | 0 | 0 | 5.6 | -3.6 | 59 | 22.8 | 40 | 0 | 1.9 | muy_bajo | 1 |
| 2023-02-13 | 0 | 0 | 4.7 | -2.6 | 49 | 18.4 | 34.2 | 0 | 1.6 | muy_bajo | 0 |
| 2023-02-14 | 0 | 0 | 5.3 | 1.4 | 67 | 26.6 | 46.8 | 0 | 3 | muy_bajo | 0 |
| 2023-02-15 | 0 | 0 | 5 | -0.3 | 55 | 24.6 | 42.5 | 0 | 2.8 | muy_bajo | 0 |
| 2023-02-16 | 0 | 0 | 8.3 | -0.7 | 46 | 18 | 30.6 | 0 | 0.9 | muy_bajo | 0 |
| 2023-02-17 | 0 | 0 | 11 | 0.2 | 48 | 18 | 30.6 | 0 | 2.4 | muy_bajo | 0 |
| 2023-02-18 | 0 | 0 | 11.7 | 2.3 | 64 | 19.6 | 38.9 | 0.6 | 2.3 | muy_bajo | 0 |
| 2023-02-19 | 0 | 0 | 13.5 | 7.5 | 57 | 21.5 | 42.5 | 0.2 | 3 | muy_bajo | 0 |
| 2023-02-20 | 0 | 0 | 8.8 | 3.4 | 41 | 26.4 | 49.7 | 0.5 | 5.5 | bajo | 0 |
| 2023-02-21 | 0 | 0 | 16.2 | 4.9 | 41 | 28.8 | 52.9 | 0 | 7.5 | bajo | 0 |
| 2023-02-22 | 0 | 0 | 10.8 | 6 | 47 | 11.5 | 23 | 0 | 3.7 | muy_bajo | 0 |
It is generated in your browser from this page’s data: one file per fire, aggregated by day and without individual hotspots.
Live widget for your story
It updates itself while the fire is still active and links to this page. Free, with the attribution shown at the bottom.
Sources for this page: EFFIS (Copernicus), NASA FIRMS (VIIRS), ERA5 (ECMWF/Copernicus C3S) · Open-Meteo.com (CC BY 4.0). Open-Meteo.com · How we build fire pages: methodology
- Burnt area
- 285ha
- Copernicus perimeter
- Duration
- 4days
- 9 Feb 2023 – 12 Feb 2023
- Municipalities hit
- 1
- districts
- Started on
- 9 Feb
- 2023
- Heat detections
- 4
- in a single hotspot: 11 MW
- Danger at start
- 1
- Very low · FWI index
- Average daily power
- 32MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
9 Feb12 Feb
How it evolved, day by day
9 Feb 2023 · 32 MW · 4
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
6°high
40km/h · peak gust
45%lowest humidity
It had gone 4 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
-
285 ha reached on 9 Feb0.2 %
Burnt area inside each municipality, from crossing the official perimeter with administrative boundaries. The distance runs from the point marking the centre of each area to the nearest fire: staying a kilometre away does not mean it reached the houses.
What burned
- Other natural land100 %
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) |
|---|---|---|---|---|---|
| 9 Feb | -0.1 °C | 55 % | 36 km/h | 0.0 mm | Very low 1 |
| 10 Feb | 1.4 °C | 45 % | 23 km/h | 0.0 mm | Very low 1 |
| 11 Feb | 3.2 °C | 53 % | 26 km/h | 0.0 mm | Very low 1 |
| 12 Feb | 5.6 °C | 59 % | 40 km/h | 0.0 mm | Very low 2 |
| 13 Feb after | 4.7 °C | 49 % | 34 km/h | 0.0 mm | Very low 2 |
| 14 Feb after | 5.3 °C | 67 % | 47 km/h | 0.0 mm | Very low 3 |
| 15 Feb after | 5.0 °C | 55 % | 42 km/h | 0.0 mm | Very low 3 |
| 16 Feb after | 8.3 °C | 46 % | 31 km/h | 0.0 mm | Very low 1 |
| 17 Feb after | 11.0 °C | 48 % | 31 km/h | 0.0 mm | Very low 2 |
| 18 Feb after | 11.7 °C | 64 % | 39 km/h | 0.6 mm | Very low 2 |
| 19 Feb after | 13.5 °C | 57 % | 42 km/h | 0.2 mm | Very low 3 |
| 20 Feb after | 8.8 °C | 41 % | 50 km/h | 0.5 mm | Low 6 |
| 21 Feb after | 16.2 °C | 41 % | 53 km/h | 0.0 mm | Low 8 |
| 22 Feb after | 10.8 °C | 47 % | 23 km/h | 0.0 mm | Very low 4 |
Its twins: fires that started in the same weather
It started with an FWI of 0.8, a minimum humidity of 55% and 4 days without rain. Fires in the area that started in weather like this since 2019: 15.
FWI at the start
0.8
Minimum humidity
55 %
Days without rain
4
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Kiliia fire, 9 February 2023
285 ha
4 days
FWI 0.8
Min. humidity 55 %
Biliaivka fire, January 2022
745 ha
1 day
FWI 1.2
Min. humidity 53 %
112 km away, in 2022
First rain (1 mm or more) after it ended: 1.0 mm on 17 Jan.
Bilozerka fire, February 2025
123 ha
2 days
FWI 0.8
Min. humidity 54 %
242 km away, in 2025
First rain (1 mm or more) after it ended: 2.2 mm on 2 Mar.
Biliaivka fire, January 2022
1,639 ha
8 days
FWI 1.7
Min. humidity 52 %
112 km away, in 2022
First rain (1 mm or more) after it ended: 2.7 mm on 24 Jan.
Bilozerka fire, February 2025
176 ha
2 days
FWI 0.7
Min. humidity 56 %
248 km away, in 2025
First rain (1 mm or more) after it ended: 3.8 mm on 15 Feb.
Reni fire, March 2026
307 ha
10 days
FWI 1.5
Min. humidity 50 %
79 km away, in 2026
First rain (1 mm or more) after it ended: 2.7 mm on 21 Mar.
What happened to them
- 2 days
- median duration
- 176 ha
- median area
- 7 %
- went past 1,000 ha
- 2.5 mm
- rain at the end (median; 13 of 15 had it)
It was 1.6 times larger than the median of its twins and lasted 4 days, against 2 days.
Only 4 of its 15 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 2 of 15, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 2.5 mm.
This is a bank of analogues: it shows what usually happens, not what will happen. With fewer than 15 twins we give no figures. How we calculate it
How it ended
—first rain
—no rain in ten days
40km/h · max. gust
It was considered over on 12 Feb, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 13 of 15, with a median of 2.5 mm.
Weather on this page: Open-Meteo.com (CC BY 4.0) · Copernicus Climate Change Service (ERA5)
How a twin is chosen
- Same area: fires that have already ended, less than 250 km from this one, since 2019.
- Same start: we compare the FWI on the first day, the minimum humidity that day and the run of days without rain before it. The slider sets how much they may differ.
- Only pages with final weather data (ERA5 reanalysis) calculated in the same way as this fire’s; agricultural and grass burns and pages with data under review are left out.
- Fires burning at the same time as this one (a week before or after) are left out: they share the same spell of weather and do not count as a precedent.
- They are sorted by similarity, and the outlines of the first five are drawn.
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
↔
Before · 2 Feb 2023
After · 19 Feb 2023
Sentinel-2 did not pass over on that day. Try another date, or use false colour, which is daily.
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 · CopernicusOn 11 February 2023 the air beside the fire reached 35 µg/m³ of PM2.5. That day averaged 28: 1.8 times the WHO daily guideline (15).
PM2.5 peak35 µg/m³
Days over the guideline2 days
PM1045 µg/m³
Optical depth0.20
WHO 15
7 Feb9 Feb11 Feb13 Feb15 Feb
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 · 4Every 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
- 6,700 haChilia Veche31 March 2022 · 4 days · 17 km away
- 6,252 haKiliia Кілійський район24 March 2022 · 9 days · 17 km away
- 5,149 haKiliia Кілійський район3 January 2026 · 1 day · 17 km away
- 3,412 haChilia Veche29 March 2025 · 1 day · 19 km away
- 3,327 haC.A. Rosetti21 January 2020 · 4 days · 27 km away
- 3,207 haC.A. RosettiJanuary 2017 · 6 days · 28 km away
Frequently asked questions
- How long did the Kiliia fire last?
- Copernicus dates it between 9 February 2023 and 12 February 2023: 4 days between the first and last image with fire.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 285 hectares (2.8 km²). Official national figures may differ.
- Which municipalities burned?
- The fire only entered Kiliia (285 ha, 0.2 %).
- Did the fire reach a town?
- The fire started in Kiliia and came within 7.0 km of its centre. That is the distance from the perimeter, or the nearest hotspot, to the point marking the centre; it does not mean it entered the houses.
- What was the weather like?
- During the fire the temperature reached 5.6 °C, humidity dropped to 45 % and gusts hit 40 km/h. The fire danger index (FWI) reached 2, class Very low.
- 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.
- How did the fires that started in similar weather in this area end?
- Fires less than 250 km away that started since 2019 with a similar FWI, humidity and dry spell: 15. Their median duration was 2 days and their median area 176 ha; 7 % went past 1,000 ha. Only 4 of its 15 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 2 of 15, not even 1 mm fell in the ten days after the end: they went out without rain. In the rest, the first rainy day brought a median of 2.5 mm.
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
Satellite cross-check
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 With cross-checks and a citable version
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
How we know this
- Perimeter: EFFIS (Copernicus), mapped on satellite imagery.
- Dates from the perimeter: the VIIRS detections inside it did not change them. 4 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.
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.