Lanxi County fire, 16 November 2025 兰西县 · Qinggang County, Lanxi County
The fire started on 16 November 2025 in Lanxi County, China, and satellites saw it burning for 8 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,642 hectares from heat detections, spread across 2 municipalities.
It is the 176th largest in Heilongjiang Province since 2016 (of 1841 with a page). Number 77 in China in 2025, of 711.
The power measured by the satellite is low (12.6 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…
- Burnt area
- 4,642ha
- GWIS perimeter (Copernicus)
- Duration
- 8days
- 16 Nov 2025 – 23 Nov 2025
- Municipalities hit
- 2
- counties
- Started on
- 16 Nov
- 2025
- Heat detections
- 62
- in a single hotspot: 13 MW
- Danger at start
- 10
- Low · FWI index
- Average daily power
- 81MW
- detected power per day, on average
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 10 days without rain (1 mm or more) when it started. Rain came after the fire: 2.7 mm on 29 Nov.
This area had burned before
28% of the perimeter overlaps earlier fires recorded since 2016: 17 ha in 2018, 627 ha in 2019, 219 ha in 2020, 413 ha in 2022.
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
Beijing (Dongcheng and Xicheng) boundary: geoBoundaries · Lee Beryman, OpenStreetMap · © OpenStreetMap contributors (ODbL 1.0).
Paris boundary: geoBoundaries · Institut national de l'information géographique et forestière (IGN-F) (Etalab Open License 2.0).
Madrid boundary: geoBoundaries · Open Data ESRI, IGN Central Registry of Cartography Area (CC BY 4.0).
This compares size, not location: both shapes are at the same scale, north up, centred on each other.
What happened to each town
-
Qinggang County 青冈县3,675 ha reached on 19 Nov1.4 %
-
955 ha reached on 16 Nov0.4 %
Burnt area inside each municipality, from crossing the GWIS 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.
People and buildings inside the perimeter
GHSL 2025Inside the perimeter there were about 62 hectares of built-up land and about 4,800 residents (GHSL 2025, 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. The GHSL 2025 epoch is a projection made from 2020 and earlier data.
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) |
|---|---|---|---|---|---|
| 16 Nov | -0.1 °C | 35 % | 42 km/h | 0.0 mm | Low 10 |
| 17 Nov | -5.1 °C | 32 % | 46 km/h | 0.0 mm | Low 10 |
| 18 Nov | -3.7 °C | 43 % | 32 km/h | 0.0 mm | Low 7 |
| 19 Nov | 5.2 °C | 37 % | 45 km/h | 0.0 mm | Low 10 |
| 20 Nov | 0.1 °C | 34 % | 41 km/h | 0.0 mm | Low 9 |
| 21 Nov | 0.3 °C | 40 % | 34 km/h | 0.0 mm | Low 8 |
| 22 Nov | 7.9 °C | 29 % | 43 km/h | 0.0 mm | Low 11 |
| 23 Nov | 4.8 °C | 43 % | 26 km/h | 0.0 mm | Low 8 |
| 24 Nov after | -1.2 °C | 47 % | 28 km/h | 0.0 mm | Low 7 |
| 25 Nov after | -2.5 °C | 40 % | 17 km/h | 0.0 mm | Low 6 |
| 26 Nov after | -2.3 °C | 53 % | 24 km/h | 0.7 mm | Very low 4 |
| 27 Nov after | -5.3 °C | 38 % | 34 km/h | 0.7 mm | Very low 4 |
| 28 Nov after | -4.0 °C | 43 % | 29 km/h | 0.0 mm | Very low 4 |
| 29 Nov after | 1.3 °C | 66 % | 49 km/h | 2.7 mm | Very low 1 |
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.
The smoke
CAMS · CopernicusOn 15 November 2025 the air beside the fire reached 62 µg/m³ of PM2.5. That day averaged 43: 2.9 times the WHO daily guideline (15).
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 · 62Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 6,936 haLanxi County 兰西县20 March 2026 · 13 days · 20 km away
- 9,059 haQinggang County 青冈县21 March 2026 · 15 days · 22 km away
- 6,400 haAnda City 安达市7 November 2022 · 4 days · 23 km away
- 9,354 haAnda City 安达市6 April 2024 · 6 days · 35 km away
- 10,163 haAnda City 安达市21 March 2026 · 15 days · 38 km away
- 6,928 haAnda City 安达市23 March 2026 · 11 days · 39 km away
Frequently asked questions
- How long did the Lanxi County fire last?
- GWIS (Copernicus) dates it between 16 November 2025 and 23 November 2025: 8 days between the first and last heat detection of the perimeter.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 4,642 hectares (46.4 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Qinggang County (3,675 ha, 1.4 %); Lanxi County (955 ha, 0.4 %).
- What was the weather like?
- During the fire the temperature reached 7.9 °C, humidity dropped to 29 % and gusts hit 46 km/h. The fire danger index (FWI) reached 11, class Low.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of China (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: 119 · 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.
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: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery; 3 polygons grouped in this page.
- Dates from the perimeter: the VIIRS detections inside it did not change them. 62 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 2025, 100 m cells), summed inside the perimeter: an estimate of what was there, not a damage count.
Where this data comes from
The perimeter comes from the Copernicus Global Wildfire Information System (GWIS), which rebuilds it from MODIS and VIIRS heat detections and publishes it under CC BY 4.0. It is not measured on imagery as in Europe, so it is an estimate. 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 ADM3 (Open Data Commons Open Database License 1.0). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ from each country’s official figure.