Burned area
satellite only1,143ha
Perimeter published by GWIS (Copernicus).
- Source
- GWIS (Copernicus)
- Date
- 30 Jan 2025 – 10 Feb 2025
+− cross-check
No official record is matched to this page to compare it with.
TH · Thailand · –
Non Sang fire, January 2025 โนนสัง · Non Sang, Ubolratana, Khao Suan Kwang
Out · last detection 10 Feb 2025, 19:20 UTC
The fire started on 30 January 2025 in Non Sang, Thailand, and satellites saw it burning for 12 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 1,143 hectares from heat detections, spread across 3 municipalities.
Number 137 in Thailand in 2025, of 173.
The power measured by the satellite is low (10.6 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 2026-10-26matches 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 only12days
30 Jan 2025 to 10 Feb 2025: first and last day with fire on the page.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 10 Feb 2025, 19:20 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 only30 Jan 2025
First day with fire seen by the satellites or the perimeter.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 30 Jan 2025
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only27
VIIRS detections at 375 m. Most intense hotspot: 11 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 30 Jan 2025 – 10 Feb 2025
+− 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 only75MW
Total radiative power on 2 February 2025; hotspots that day: 16.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 2 Feb 2025
+− 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
model23.7FWI · high
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 60.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 30 Jan 2025, 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
model34.7°C · 29% RH
High of 34.7 °C and minimum humidity of 29% on 2 February 2025; gusts of 43 km/h on 3 February 2025.
- Source
- weather model at the fire’s grid cell
- Date
- 30 Jan 2025 – 10 Feb 2025
- 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
-
logLast day with fire: 3 February 2025 → 10 February 2025.
-
· reconstructed GHSLPopulation and built-up area computed
What was saved on 26 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
- 1,143 ha
- Dates
- 30 Jan 2025 – 10 Feb 2025
- Name
- Non Sang
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/non-sang-2025-01?v=2026-10-26A 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 non-sang-2025-01.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-01-30 | 1 | 1 | 28.5 | 13 | 42 | 9.8 | 21.2 | 0 | 23.7 | alto | 1 |
| 2025-01-31 | 0 | 0 | 31.5 | 16.6 | 35 | 9.9 | 16.2 | 0 | 24.7 | alto | 1 |
| 2025-02-01 | 7 | 10 | 33.4 | 17.6 | 31 | 10 | 16.6 | 0 | 27.5 | alto | 1 |
| 2025-02-02 | 16 | 75 | 34.7 | 18 | 29 | 8.6 | 20.9 | 0 | 28.5 | alto | 1 |
| 2025-02-03 | 1 | 4 | 33.7 | 17.2 | 37 | 19.5 | 42.8 | 0 | 37.5 | alto | 1 |
| 2025-02-04 | 0 | 0 | 28.1 | 17.7 | 40 | 16.8 | 32 | 0 | 31.4 | alto | 1 |
| 2025-02-05 | 0 | 0 | 28.8 | 15 | 46 | 12.1 | 23.8 | 0 | 25.5 | alto | 1 |
| 2025-02-06 | 0 | 0 | 32.1 | 17.3 | 43 | 7.6 | 20.5 | 0 | 22.9 | alto | 1 |
| 2025-02-07 | 0 | 0 | 32 | 19.9 | 43 | 20.2 | 38.2 | 0 | 31.8 | alto | 1 |
| 2025-02-08 | 0 | 0 | 28.9 | 18.4 | 40 | 16.1 | 33.1 | 0 | 29 | alto | 1 |
| 2025-02-09 | 0 | 0 | 27.2 | 14.8 | 40 | 14.6 | 30.6 | 0 | 28.2 | alto | 1 |
| 2025-02-10 | 2 | 2 | 28.7 | 13.5 | 39 | 10.5 | 26.6 | 0 | 25.6 | alto | 1 |
| 2025-02-11 | 0 | 0 | 31.2 | 13.8 | 38 | 9.2 | 19.8 | 0 | 25 | alto | 0 |
| 2025-02-12 | 0 | 0 | 33.5 | 17.1 | 33 | 8.4 | 17.3 | 0 | 26.9 | alto | 0 |
| 2025-02-13 | 0 | 0 | 33.8 | 16.6 | 33 | 10.6 | 24.8 | 0 | 29 | alto | 0 |
| 2025-02-14 | 0 | 0 | 33.2 | 17.2 | 39 | 10.7 | 20.2 | 0 | 29.3 | alto | 0 |
| 2025-02-15 | 0 | 0 | 35.3 | 19 | 32 | 9.6 | 21.6 | 0 | 29.7 | alto | 0 |
| 2025-02-16 | 0 | 0 | 34.7 | 20.8 | 36 | 10.7 | 31.3 | 0 | 30.8 | alto | 0 |
| 2025-02-17 | 0 | 0 | 32.8 | 22.3 | 46 | 13.5 | 27.7 | 0 | 29.5 | alto | 0 |
| 2025-02-18 | 0 | 0 | 31.8 | 21.3 | 44 | 12.4 | 30.6 | 0 | 28.8 | alto | 0 |
| 2025-02-19 | 0 | 0 | 31.4 | 20.4 | 47 | 11.7 | 24.5 | 0.1 | 27 | alto | 0 |
| 2025-02-20 | 0 | 0 | 32.4 | 20.5 | 45 | 9.8 | 25.6 | 0 | 25.9 | alto | 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
- Burnt area
- 1,143ha
- GWIS perimeter (Copernicus)
- Duration
- 12days
- 30 Jan 2025 – 10 Feb 2025
- Municipalities hit
- 3
- districts
- Started on
- 30 Jan
- 2025
- Heat detections
- 27
- in a single hotspot: 11 MW
- Danger at start
- 24
- High · FWI index
- Average daily power
- 18MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
30 Jan10 Feb
10 Feb 2025
How it evolved, day by day
30 Jan
1 Feb
2 Feb
3 Feb
10 Feb
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
35°high
43km/h · peak gust
29%lowest humidity
It had gone more than two months without rain (1 mm or more) when it started.
This area had burned before
86% of the perimeter overlaps earlier fires recorded since 2016: 383 ha in 2017, 799 ha in 2019, 137 ha in 2020, 694 ha in 2021, 561 ha in 2023, 101 ha in 2024. Part of it burned more than once, so the yearly figures add up to more than the 978 ha that had burned before.
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
Bangkok boundary: geoBoundaries · OpenStreetMap, Wambacher · © 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
-
907 ha reached on 30 Jan1.4 %
-
Ubolratana อุบลรัตน์218 ha reached on 2 Feb0.5 %
-
Khao Suan Kwang เขาสวนกวาง26 ha0.1 %
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 2025Built-up area0.12 ha
Residents< 20
Inside the perimeter there were about 0.12 hectares of built-up land and almost nobody lived there (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)
Started with 60 days without rain: 14 % of the area in Thailand
| Day | High | Min. humidity | Peak gust | Rain | Danger (FWI) |
|---|---|---|---|---|---|
| 30 Jan | 28.5 °C | 42 % | 21 km/h | 0.0 mm | High 24 |
| 31 Jan | 31.5 °C | 35 % | 16 km/h | 0.0 mm | High 25 |
| 1 Feb | 33.4 °C | 31 % | 17 km/h | 0.0 mm | High 28 |
| 2 Feb | 34.7 °C | 29 % | 21 km/h | 0.0 mm | High 28 |
| 3 Feb | 33.7 °C | 37 % | 43 km/h | 0.0 mm | High 38 |
| 4 Feb | 28.1 °C | 40 % | 32 km/h | 0.0 mm | High 31 |
| 5 Feb | 28.8 °C | 46 % | 24 km/h | 0.0 mm | High 26 |
| 6 Feb | 32.1 °C | 43 % | 20 km/h | 0.0 mm | High 23 |
| 7 Feb | 32.0 °C | 43 % | 38 km/h | 0.0 mm | High 32 |
| 8 Feb | 28.9 °C | 40 % | 33 km/h | 0.0 mm | High 29 |
| 9 Feb | 27.2 °C | 40 % | 31 km/h | 0.0 mm | High 28 |
| 10 Feb | 28.7 °C | 39 % | 27 km/h | 0.0 mm | High 26 |
| 11 Feb after | 31.2 °C | 38 % | 20 km/h | 0.0 mm | High 25 |
| 12 Feb after | 33.5 °C | 33 % | 17 km/h | 0.0 mm | High 27 |
| 13 Feb after | 33.8 °C | 33 % | 25 km/h | 0.0 mm | High 29 |
| 14 Feb after | 33.2 °C | 39 % | 20 km/h | 0.0 mm | High 29 |
| 15 Feb after | 35.3 °C | 32 % | 22 km/h | 0.0 mm | High 30 |
| 16 Feb after | 34.7 °C | 36 % | 31 km/h | 0.0 mm | High 31 |
| 17 Feb after | 32.8 °C | 46 % | 28 km/h | 0.0 mm | High 30 |
| 18 Feb after | 31.8 °C | 44 % | 31 km/h | 0.0 mm | High 29 |
| 19 Feb after | 31.4 °C | 47 % | 24 km/h | 0.1 mm | High 27 |
| 20 Feb after | 32.4 °C | 45 % | 26 km/h | 0.0 mm | High 26 |
Its twins: fires that started in the same weather
It started with an FWI of 23.7, a minimum humidity of 42% and more than two months without rain. Fires in the area that started in weather like this since 2016: 29.
FWI at the start
23.7
Minimum humidity
42 %
Days without rain
60+
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Non Sang fire, January 2025
1,143 ha
12 days
FWI 23.7
Min. humidity 42 %
Phu Kradueng fire, February 2020
3,122 ha
18 days
FWI 22.5
Min. humidity 41 %
96 km away, in 2020
First rain (1 mm or more) after it ended: 13.2 mm on 3 Mar.
Mueang Chaiyaphum fire, January 2020
1,048 ha
1 day
FWI 23.5
Min. humidity 41 %
138 km away, in 2020
First rain (1 mm or more) after it ended: none in the following ten days.
Dan Sai fire, February 2020
1,577 ha
10 days
FWI 24.9
Min. humidity 43 %
156 km away, in 2020
First rain (1 mm or more) after it ended: none in the following ten days.
Thong Saen Khan fire, January 2020
1,221 ha
7 days
FWI 24.8
Min. humidity 42 %
249 km away, in 2020
First rain (1 mm or more) after it ended: none in the following ten days.
Dan Sai fire, February 2020
1,537 ha
15 days
FWI 20.7
Min. humidity 42 %
158 km away, in 2020
First rain (1 mm or more) after it ended: 2.8 mm on 4 Mar.
What happened to them
- 7 days
- median duration
- 1,470 ha
- median area
- 97 %
- went past 1,000 ha
- 5.2 mm
- rain at the end (median; 14 of 29 had it)
It burned an area similar to its twins (1,143 ha against a median of 1,470 ha) and lasted 12 days, against 7 days.
In 15 of 29, 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
—first rain
—no rain in ten days
43km/h · max. gust
It was considered over on 10 Feb, and not even 1 mm fell in the following ten days: it went out without rain. Twins with rain when they ended: 14 of 29, 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 · 23 Jan 2025
After · 17 Feb 2025
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 2 February 2025 the air beside the fire reached 49 µg/m³ of PM2.5. That day averaged 26: 1.7 times the WHO daily guideline (15).
PM2.5 peak49 µg/m³
Days over the guideline8 days
PM1049 µg/m³
Optical depth0.59
WHO 15
28 Jan30 Jan1 Feb3 Feb5 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 · 27Every 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
- 2,476 haUbolratana อุบลรัตน์April 2026 · 12 days · 4 km away
- 1,846 haNon Sang โนนสังMarch 2026 · 10 days · 19 km away
- 1,234 haNon Sang โนนสังMarch 2025 · 9 days · 20 km away
- 1,188 haNong Wua So หนองวัวซอFebruary 2024 · 4 days · 22 km away
- 1,559 haMueang Nong Bua Lam Phu เมืองหนองบัวลำภูApril 2026 · 12 days · 23 km away
- 1,557 haNong Wua So หนองวัวซอFebruary 2016 · 11 days · 25 km away
Frequently asked questions
- How long did the Non Sang fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 30 January 2025 to 10 February 2025 (12 days). The perimeter dates it from 30 January 2025 to 3 February 2025.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 1,143 hectares (11.4 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 3 municipalities: Non Sang (907 ha, 1.4 %); Ubolratana (218 ha, 0.5 %); Khao Suan Kwang (26 ha, 0.1 %).
- What was the weather like?
- During the fire the temperature reached 34.7 °C, humidity dropped to 29 % and gusts hit 43 km/h. The fire danger index (FWI) reached 38, class High.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Thailand (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: 29. Their median duration was 7 days and their median area 1,470 ha; 97 % went past 1,000 ha. In 15 of 29, 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: 199 · 191 · Emergency number and official warnings
Satellite cross-check
History of this page · 1 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
- Last day with fire: 3 February 2025 → 10 February 2025.
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 adjusted with the VIIRS detections inside the perimeter, which said 30 January 2025 to 3 February 2025. 27 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 ADM2 (Creative Commons Attribution 3.0 Intergovernmental Organisations (CC BY 3.0 IGO)). 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.