Burned area
satellite only340ha
Perimeter published by EFFIS (Copernicus).
- Source
- EFFIS (Copernicus)
- Date
- perimeter revised on 12 April 2022
+− cross-check
No official record is matched to this page to compare it with.
BG · Bulgaria · –
Ugarchin fire, 29 March 2022 Угърчин · Ugarchin, Lukovit, Teteven
Out · last detection 30 Mar 2022, 01:26 UTC
The fire started on 29 March 2022 in Ugarchin, Bulgaria, and satellites saw it burning for 4 days. Copernicus mapped a burnt perimeter of 340 hectares from satellite imagery, spread across 3 municipalities.
It is the 13th largest in Lovech since 2016 (of 52 with a page). Number 13 in Bulgaria in 2022, of 41.
The power measured by the satellite is low (2.2 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
29 Mar 2022 to 1 Apr 2022: first and last day with fire on the page.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 30 Mar 2022, 01:26 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 only29 Mar 2022
First day with fire seen by the satellites or the perimeter.
- Source
- EFFIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 29 Mar 2022
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only10
VIIRS detections at 375 m. Most intense hotspot: 2 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 29 Mar 2022 – 1 Apr 2022
+− 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 only13MW
Total radiative power on 29 March 2022; hotspots that day: 7.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 29 Mar 2022
+− 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
model8.3FWI · low
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 11.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 29 Mar 2022, 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
model21.9°C · 43% RH
High of 21.9 °C and minimum humidity of 43% on 1 April 2022; gusts of 60 km/h on 1 April 2022.
- Source
- weather model at the fire’s grid cell
- Date
- 29 Mar 2022 – 1 Apr 2022
- 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 GHSLPopulation and built-up area computed
-
· 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
- 340 ha
- Dates
- 29 Mar 2022 – 1 Apr 2022
- Name
- Ugarchin
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/ugarchin-2022-03-9?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 ugarchin-2022-03-9.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022-03-29 | 7 | 13 | 19.3 | 6.5 | 32 | 11 | 27.7 | 0.3 | 8.3 | bajo | 1 |
| 2022-03-30 | 3 | 4 | 20.8 | 6.9 | 32 | 11 | 27.7 | 0 | 11.1 | bajo | 1 |
| 2022-03-31 | 0 | 0 | 20.5 | 10.4 | 46 | 14.5 | 51.5 | 1.1 | 3.4 | muy_bajo | 1 |
| 2022-04-01 | 0 | 0 | 21.9 | 11.5 | 43 | 17.3 | 60.1 | 1.3 | 11.7 | moderado | 1 |
| 2022-04-02 | 0 | 0 | 19.5 | 8.6 | 33 | 19 | 56.2 | 3 | 8.5 | 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), GHSL (JRC). Open-Meteo.com · How we build fire pages: methodology
- Burnt area
- 340ha
- Copernicus perimeter
- Duration
- 4days
- 29 Mar 2022 – 1 Apr 2022
- Municipalities hit
- 3
- municipalities
- Started on
- 29 Mar
- 2022
- Heat detections
- 10
- in a single hotspot: 2 MW
- Danger at start
- 8
- Low · FWI index
- Average daily power
- 8MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
29 Mar1 Apr
30 Mar 2022
How it evolved, day by day
29 Mar
30 Mar
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
22°high
60km/h · peak gust
32%lowest humidity
It had gone 11 days without rain (1 mm or more) when it started. Rain came after the fire: 3.0 mm on 2 Apr.
This area had burned before
No earlier perimeters overlap this fire since 2016, when the satellite record begins.
What happened to each town
-
254 ha reached on 29 Mar0.4 %
-
81 ha reached on 29 Mar0.2 %
-
5 ha0.0 %
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
- Broadleaved forest51 %
- Agricultural areas38 %
- Scrub and transitional woodland9.9 %
- Mixed forest1.2 %
Natura 2000 protected area affected: 0 %
- LIC Balgarski izvor BG0001036
Natura 2000 sites (European Environment Agency, 2024 release) crossed by the perimeter.
Land cover inside the perimeter according to Corine Land Cover, as reported by Copernicus.
People and buildings inside the perimeter
GHSL 2020Built-up area< 0.1 ha
Residents< 20
Inside the perimeter there was no noticeable built-up land and almost nobody lived there (GHSL 2020, satellite-based estimate).
This is an estimate on 100 m cells, made from satellite imagery and census data: it does not mean that homes burned or that anyone was harmed. The perimeter also contains land that never burned.
Source: Global Human Settlement Layer (GHS-BUILT-S and GHS-POP R2023A), European Commission Joint Research Centre (JRC), © European Union, CC BY 4.0. Sum inside the perimeter computed by WorldFires. human-settlement.emergency.copernicus.eu
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) |
|---|---|---|---|---|---|
| 29 Mar | 19.3 °C | 32 % | 28 km/h | 0.3 mm | Low 8 |
| 30 Mar | 20.8 °C | 32 % | 28 km/h | 0.0 mm | Low 11 |
| 31 Mar | 20.5 °C | 46 % | 52 km/h | 1.1 mm | Very low 3 |
| 1 Apr | 21.9 °C | 43 % | 60 km/h | 1.3 mm | Moderate 12 |
| 2 Apr after | 19.5 °C | 33 % | 56 km/h | 3.0 mm | Low 8 |
Its twins: fires that started in the same weather
It started with an FWI of 8.3, a minimum humidity of 32% and 11 days without rain. Fires in the area that started in weather like this since 2016: 15.
FWI at the start
8.3
Minimum humidity
32 %
Days without rain
11
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Ugarchin fire, 29 March 2022
340 ha
4 days
FWI 8.3
Min. humidity 32 %
Lukovit fire, February 2022
279 ha
2 days
FWI 5.1
Min. humidity 31 %
4 km away, in 2022
First rain (1 mm or more) after it ended: 5.2 mm on 22 Feb.
Bosilegrad Municipality fire, April 2024
375 ha
4 days
FWI 9.4
Min. humidity 31 %
176 km away, in 2024
First rain (1 mm or more) after it ended: 1.5 mm on 16 Apr.
Lukovit fire, March 2025
176 ha
4 days
FWI 6.3
Min. humidity 34 %
4 km away, in 2025
First rain (1 mm or more) after it ended: 1.9 mm on 13 Mar.
Zagubica Municipality fire, March 2025
137 ha
2 days
FWI 8.9
Min. humidity 32 %
250 km away, in 2025
First rain (1 mm or more) after it ended: 10.0 mm on 11 Mar.
Trgoviste Municipality fire, April 2024
165 ha
8 days
FWI 10.1
Min. humidity 31 %
179 km away, in 2024
First rain (1 mm or more) after it ended: 1.5 mm on 16 Apr.
What happened to them
- 2 days
- median duration
- 170 ha
- median area
- 0 %
- went past 1,000 ha
- 5.2 mm
- rain at the end (median; 13 of 15 had it)
It was 2.0 times larger than the median of its twins and lasted 4 days, against 2 days.
Only 1 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 5.2 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
3.0 mmfirst rain
2 Aprthe day after it ended
60km/h · max. gust
It was considered over on 1 Apr, and on 2 Apr 3.0 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 13 of 15, with a median of 5.2 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 2016.
- 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 · 22 Mar 2022
After · 8 Apr 2022
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 31 March 2022 the air beside the fire reached 21 µg/m³ of PM2.5. That day averaged 15: 1.0 times the WHO daily guideline (15).
PM2.5 peak21 µg/m³
Days over the guideline1 day
PM1075 µg/m³
WHO 15
27 Mar29 Mar31 Mar2 Apr
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 · 10Every 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
- 1,541 haCherven Bryag Червен бряг14 July 2024 · 3 days · 31 km away
- 864 haCherven Bryag Червен бряг7 September 2019 · 2 days · 31 km away
- 789 haRoman Роман16 September 2019 · 3 days · 31 km away
- 637 haCherven Bryag Червен брягAugust 2026 · 2 days · 32 km away
- 2,625 haCherven Bryag Червен бряг15 July 2024 · 6 days · 33 km away
- 888 haCherven Bryag Червен брягJuly 2016 · 5 days · 33 km away
Frequently asked questions
- How long did the Ugarchin fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 29 March 2022 to 1 April 2022 (4 days). The perimeter dates it from 29 March 2022 to 30 March 2022.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 340 hectares (3.4 km²). Official national figures may differ.
- Which municipalities burned?
- The fire entered 3 municipalities: Ugarchin (254 ha, 0.4 %); Lukovit (81 ha, 0.2 %); Teteven (5 ha, 0.0 %).
- Did the fire reach a town?
- The fire started in Ugarchin and came within 11.5 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 21.9 °C, humidity dropped to 32 % and gusts hit 60 km/h. The fire danger index (FWI) reached 12, class Moderate.
- Where does this data come from?
- From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Bulgaria (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 2016 with a similar FWI, humidity and dry spell: 15. Their median duration was 2 days and their median area 170 ha; 0 % went past 1,000 ha. Only 1 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 5.2 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: 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 adjusted with the VIIRS detections inside the perimeter, which said 29 March 2022 to 30 March 2022. 10 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.
- Built-up area and population come from the JRC Global Human Settlement Layer (epoch 2020, 100 m cells), summed inside the perimeter: an estimate of what was there, not a damage count.
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.