Burned area
satellite only1,455ha
Perimeter published by GWIS (Copernicus).
- Source
- GWIS (Copernicus)
- Date
- 6 Feb 2017 – 9 Feb 2017
+− cross-check
No official record is matched to this page to compare it with.
CN · China · –
Yongsheng County fire, 6 February 2017 永胜县 · Yongsheng County
Out · last measured on 9 Feb 2017
The fire started on 6 February 2017 in Yongsheng County, China, and satellites saw it burning for 4 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 1,455 hectares from heat detections, spread across a single municipality.
It is the 89th largest in Yunnan Province since 2016 (of 196 with a page). Number 124 in China in 2017, of 243.
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
6 Feb 2017 to 9 Feb 2017: first and last day with fire on the page.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 6 Feb 2017 – 9 Feb 2017
+− 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 only6 Feb 2017
First day with fire seen by the satellites or the perimeter.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 6 Feb 2017
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Danger at the start
model19.1FWI · moderate
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 32.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 6 Feb 2017, 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
model24.3°C · 8% RH
High of 24.3 °C and minimum humidity of 8% on 6 February 2017; gusts of 74 km/h on 7 February 2017.
- Source
- weather model at the fire’s grid cell
- Date
- 6 Feb 2017 – 9 Feb 2017
- 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
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
- 1,455 ha
- Dates
- 6 Feb 2017 – 9 Feb 2017
- Name
- Yongsheng County
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/yongsheng-county-2017-02-4?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 yongsheng-county-2017-02-4.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017-02-06 | 0 | 0 | 24.3 | 5.3 | 8 | 11.9 | 54 | 0 | 19.1 | moderado | 1 |
| 2017-02-07 | 0 | 0 | 18.3 | 5.2 | 18 | 17.7 | 74.5 | 0 | 20.7 | moderado | 1 |
| 2017-02-08 | 0 | 0 | 18.7 | 3 | 26 | 8.4 | 40 | 0 | 14 | moderado | 1 |
| 2017-02-09 | 0 | 0 | 18.8 | 3.6 | 28 | 11.4 | 53.3 | 0 | 14.9 | moderado | 1 |
| 2017-02-10 | 0 | 0 | 18.3 | 3.5 | 24 | 16.7 | 69.5 | 0 | 15.4 | moderado | 0 |
| 2017-02-11 | 0 | 0 | 17.5 | 3 | 22 | 10.7 | 51.8 | 0 | 12.8 | moderado | 0 |
| 2017-02-12 | 0 | 0 | 19.9 | 2.3 | 16 | 11.4 | 50 | 0 | 13.6 | moderado | 0 |
| 2017-02-13 | 0 | 0 | 19.3 | 3.2 | 16 | 15.6 | 63.4 | 0 | 17.5 | moderado | 0 |
| 2017-02-14 | 0 | 0 | 17.9 | 4.7 | 18 | 13.5 | 57.6 | 0 | 18.9 | moderado | 0 |
| 2017-02-15 | 0 | 0 | 17.2 | 3.7 | 17 | 9.4 | 47.2 | 0.2 | 19.5 | moderado | 0 |
| 2017-02-16 | 0 | 0 | 20.8 | 2 | 9 | 9 | 39.2 | 0 | 17.5 | moderado | 0 |
| 2017-02-17 | 0 | 0 | 21.4 | 3.1 | 14 | 8.5 | 36.7 | 0 | 17.5 | moderado | 0 |
| 2017-02-18 | 0 | 0 | 21.2 | 2.8 | 17 | 12.8 | 55.4 | 0 | 18.2 | moderado | 0 |
| 2017-02-19 | 0 | 0 | 21.8 | 5 | 18 | 12.6 | 53.6 | 0 | 19.8 | moderado | 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: GWIS (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
We have the GWIS perimeter for this fire, but the VIIRS sensors did not capture it in enough detail: no day-by-day evolution, but the split by municipality is there.
- Burnt area
- 1,455ha
- GWIS perimeter (Copernicus)
- Duration
- 4days
- 6 Feb 2017 – 9 Feb 2017
- Municipalities hit
- 1
- counties
- Started on
- 6 Feb
- 2017
- Danger at start
- 19
- Moderate · FWI index
Where it burned
The weather it burned in
24°high
74km/h · peak gust
8%lowest humidity
It had gone 32 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.
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
-
1,459 ha0.3 %
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 2015Built-up area< 0.1 ha
Residents< 20
Inside the perimeter there was no noticeable built-up land and almost nobody lived there (GHSL 2015, 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)
Started with Strong wind: 24 % of the area in China Very dry air: 14 % of the area in China
| Day | High | Min. humidity | Peak gust | Rain | Danger (FWI) |
|---|---|---|---|---|---|
| 6 Feb | 24.3 °C | 8 % | 54 km/h | 0.0 mm | Moderate 19 |
| 7 Feb | 18.3 °C | 18 % | 74 km/h | 0.0 mm | Moderate 21 |
| 8 Feb | 18.7 °C | 26 % | 40 km/h | 0.0 mm | Moderate 14 |
| 9 Feb | 18.8 °C | 28 % | 53 km/h | 0.0 mm | Moderate 15 |
| 10 Feb after | 18.3 °C | 24 % | 70 km/h | 0.0 mm | Moderate 15 |
| 11 Feb after | 17.5 °C | 22 % | 52 km/h | 0.0 mm | Moderate 13 |
| 12 Feb after | 19.9 °C | 16 % | 50 km/h | 0.0 mm | Moderate 14 |
| 13 Feb after | 19.3 °C | 16 % | 63 km/h | 0.0 mm | Moderate 18 |
| 14 Feb after | 17.9 °C | 18 % | 58 km/h | 0.0 mm | Moderate 19 |
| 15 Feb after | 17.2 °C | 17 % | 47 km/h | 0.2 mm | Moderate 20 |
| 16 Feb after | 20.8 °C | 9 % | 39 km/h | 0.0 mm | Moderate 18 |
| 17 Feb after | 21.4 °C | 14 % | 37 km/h | 0.0 mm | Moderate 18 |
| 18 Feb after | 21.2 °C | 17 % | 55 km/h | 0.0 mm | Moderate 18 |
| 19 Feb after | 21.8 °C | 18 % | 54 km/h | 0.0 mm | Moderate 20 |
Its twins: fires that started in the same weather
It started with an FWI of 19.1, a minimum humidity of 8% and 32 days without rain. Fires in the area that started in weather like this since 2016: 8.
FWI at the start
19.1
Minimum humidity
8 %
Days without rain
32
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Yongsheng County fire, 6 February 2017
1,455 ha
4 days
FWI 19.1
Min. humidity 8 %
Huili County fire, February 2023
1,098 ha
2 days
FWI 14.5
Min. humidity 9 %
106 km away, in 2023
First rain (1 mm or more) after it ended: none in the following ten days.
Renhe District fire, January 2018
1,103 ha
4 days
FWI 16.0
Min. humidity 10 %
69 km away, in 2018
First rain (1 mm or more) after it ended: 5.4 mm on 2 Feb.
Huili County fire, December 2020
1,011 ha
3 days
FWI 14.2
Min. humidity 10 %
99 km away, in 2020
First rain (1 mm or more) after it ended: none in the following ten days.
Miyi County fire, February 2023
2,149 ha
4 days
FWI 15.0
Min. humidity 14 %
105 km away, in 2023
First rain (1 mm or more) after it ended: none in the following ten days.
Yanbian County fire, March 2020
1,212 ha
6 days
FWI 26.6
Min. humidity 12 %
83 km away, in 2020
First rain (1 mm or more) after it ended: none in the following ten days.
What happened to them
Fires in the area that started in similar weather: 8. With fewer than 15 we give no figures: they would be more noise than signal.
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
74km/h · max. gust
It was considered over on 9 Feb, and not even 1 mm fell in the following ten days: it went out without rain.
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 · 30 Jan 2017
After · 16 Feb 2017
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.
Other fires nearby
- 1,070 haYongsheng County 永胜县15 February 2016 · 5 days · 4 km away
- 2,004 haYongsheng County 永胜县January 2026 · 3 days · 5 km away
- 1,191 haYongsheng County 永胜县6 February 2017 · 6 days · 16 km away
- 1,045 haYongsheng County 永胜县16 February 2016 · 3 days · 18 km away
- 3,926 haYongsheng County 永胜县5 February 2017 · 4 days · 21 km away
- 1,070 haHuaping County 华坪县February 2021 · 5 days · 26 km away
Frequently asked questions
- How long did the Yongsheng County fire last?
- GWIS (Copernicus) dates it between 6 February 2017 and 9 February 2017: 4 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 1,455 hectares (14.6 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Yongsheng County (1,459 ha, 0.3 %).
- What was the weather like?
- During the fire the temperature reached 24.3 °C, humidity dropped to 8 % and gusts hit 74 km/h. The fire danger index (FWI) reached 21, class Moderate.
- 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.
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: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery.
- Dates from the perimeter: the VIIRS detections inside it did not change them. No 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 2015, 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.