Burned area
satellite only11,171ha
Union of 3 GWIS (Copernicus) perimeters: overlapping areas count once.
- Source
- GWIS (Copernicus)
- Date
- 20 Oct 2025 – 8 Dec 2025
+− cross-check
No official record is matched to this page to compare it with.
MG · Madagascar · –
Antsalova fire, 20 October 2025 Antsalova, Belo Sur Tsiribihina
Out · last detection 8 Dec 2025, 11:03 UTC
The fire started on 20 October 2025 in Antsalova, Madagascar, and satellites saw it burning for 50 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 11,171 hectares from heat detections, spread across 2 municipalities.
This page is probably a fire complex, not a single fire. GWIS merges into one perimeter the fires that touch over weeks, which in large burning seasons can join dozens of separate fires. The total area is reliable; the origin and dates refer to the whole complex.
Other fire pages in the same area and on the same dates:
We are reviewing this page: some of its data look inconsistent (the place, the dates or the area), so treat them with caution.
GWIS near-real-time perimeter, from the layer that changed in August 2025: this fire is not compared with fires from earlier years, because since then the GWIS layer gives more and larger perimeters.
Use this data
Compare with…
Use this data
Fire page data · version 2026-11-05matches 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 only50days
20 Oct 2025 to 8 Dec 2025: first and last day with fire on the page.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 8 Dec 2025, 11:03 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 only20 Oct 2025
First day with fire seen by the satellites or the perimeter.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 20 Oct 2025
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only654
VIIRS detections at 375 m. Most intense hotspot: 97 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP + NOAA-20)
- Date
- 20 Oct 2025 – 8 Dec 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 only600MW
Total radiative power on 3 November 2025; hotspots that day: 34.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 3 Nov 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
model35.5FWI · high
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 7.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 20 Oct 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
model36.2°C · 30% RH
High of 36.2 °C and minimum humidity of 30% on 1 November 2025; gusts of 49 km/h on 20 October 2025.
- Source
- weather model at the fire’s grid cell
- Date
- 20 Oct 2025 – 8 Dec 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.
Living inside
model≈ 450people
Estimated residents inside the perimeter and 0.69 ha of built-up area (100 m grid, epoch 2025).
- Source
- GHSL R2023A · JRC
- Date
- calculated on 24 October 2026
+− cross-check
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.
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
-
logArea: 14,045 → 11,171 ha.
-
logLast day with fire: 1 December 2025 → 8 December 2025.
-
logStart date: 27 October 2025 → 20 October 2025.
-
· reconstructed weatherWeather and FWI computed from the ERA5 reanalysis
-
· reconstructed GHSLPopulation and built-up area computed
Area logged each night
Move the slider to see which area the page published each day.
Versioned permanent link
https://worldfires.org/en/fire/antsalova-2025-10-2?v=2026-11-05A 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 antsalova-2025-10-2.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-10-20 | 7 | 20 | 32.6 | 22.7 | 35 | 20.3 | 48.6 | 0 | 35.5 | alto | 1 |
| 2025-10-21 | 11 | 90 | 31.9 | 21.8 | 45 | 17.4 | 41.8 | 0.1 | 31.5 | alto | 1 |
| 2025-10-22 | 11 | 49 | 32.8 | 22.6 | 45 | 19.8 | 45 | 0 | 33.7 | alto | 1 |
| 2025-10-23 | 2 | 6 | 35 | 23.3 | 38 | 15.3 | 38.2 | 0 | 30.5 | alto | 1 |
| 2025-10-24 | 4 | 12 | 35 | 24.5 | 35 | 17.4 | 36.4 | 0 | 33.8 | alto | 1 |
| 2025-10-25 | 5 | 46 | 35.3 | 24.7 | 40 | 15.2 | 34.9 | 0 | 32.3 | alto | 1 |
| 2025-10-26 | 12 | 54 | 35.4 | 24.3 | 39 | 15.7 | 39.2 | 0.1 | 33 | alto | 1 |
| 2025-10-27 | 20 | 160 | 35.6 | 25.2 | 40 | 19.3 | 44.3 | 0.1 | 36.3 | alto | 1 |
| 2025-10-28 | 10 | 84 | 33.9 | 25.1 | 49 | 18.2 | 43.2 | 0 | 32 | alto | 1 |
| 2025-10-29 | 10 | 363 | 33.2 | 24.1 | 51 | 18.4 | 42.1 | 0.1 | 30.6 | alto | 1 |
| 2025-10-30 | 14 | 167 | 34 | 24.5 | 48 | 16.9 | 38.9 | 0.2 | 29.7 | alto | 1 |
| 2025-10-31 | 0 | 0 | 35.1 | 25 | 43 | 16 | 40.7 | 0.2 | 29.3 | alto | 1 |
| 2025-11-01 | 8 | 78 | 36.2 | 25.6 | 30 | 17.6 | 43.6 | 0.5 | 38.2 | muy_alto | 1 |
| 2025-11-02 | 13 | 112 | 35.5 | 24 | 40 | 14.4 | 37.1 | 0.6 | 29.7 | alto | 1 |
| 2025-11-03 | 34 | 600 | 35.1 | 26.3 | 47 | 18.3 | 42.1 | 0.1 | 32.9 | alto | 1 |
| 2025-11-04 | 5 | 23 | 36.2 | 25.7 | 40 | 14.6 | 35.3 | 0.3 | 30.5 | alto | 1 |
| 2025-11-05 | 15 | 244 | 34.4 | 25.4 | 48 | 17 | 40.7 | 1.2 | 22.7 | alto | 1 |
| 2025-11-06 | 16 | 283 | 35 | 24.7 | 41 | 16.4 | 40.7 | 0.4 | 29.9 | alto | 1 |
| 2025-11-07 | 48 | 471 | 34.1 | 22.5 | 41 | 18.8 | 41.4 | 0.1 | 32.3 | alto | 1 |
| 2025-11-08 | 16 | 144 | 34.5 | 23 | 43 | 15.7 | 40.3 | 0.8 | 26.9 | alto | 1 |
| 2025-11-09 | 15 | 59 | 35 | 24 | 39 | 14.1 | 34.2 | 0.6 | 29.1 | alto | 1 |
| 2025-11-10 | 34 | 418 | 34.5 | 23.8 | 42 | 14.5 | 32.8 | 12.7 | 6.8 | bajo | 1 |
| 2025-11-11 | 0 | 0 | 32.8 | 23 | 52 | 11.9 | 28.4 | 5.6 | 4.1 | muy_bajo | 1 |
| 2025-11-12 | 2 | 34 | 32.7 | 23.7 | 51 | 12 | 30.2 | 4.9 | 3.4 | muy_bajo | 1 |
| 2025-11-13 | 18 | 272 | 32.7 | 23.3 | 57 | 16.1 | 36.4 | 7.2 | 2.4 | muy_bajo | 1 |
| 2025-11-14 | 5 | 55 | 30.3 | 24.7 | 61 | 17.9 | 38.9 | 1.7 | 3.8 | muy_bajo | 1 |
| 2025-11-15 | 23 | 158 | 32.1 | 24.7 | 55 | 15.3 | 36 | 0 | 8.6 | bajo | 1 |
| 2025-11-16 | 18 | 171 | 31.9 | 23.9 | 57 | 14.1 | 35.3 | 0.2 | 10.1 | bajo | 1 |
| 2025-11-17 | 61 | 489 | 32.7 | 23.7 | 47 | 14 | 34.2 | 0 | 13.1 | moderado | 1 |
| 2025-11-18 | 45 | 345 | 33 | 23.1 | 47 | 17.9 | 41.4 | 0.1 | 15.9 | moderado | 1 |
| 2025-11-19 | 0 | 0 | 31.9 | 23.4 | 56 | 16.8 | 39.2 | 6.1 | 2.6 | muy_bajo | 1 |
| 2025-11-20 | 1 | 3 | 28.4 | 23.6 | 68 | 14.2 | 32.4 | 11.9 | 0.3 | muy_bajo | 1 |
| 2025-11-21 | 0 | 0 | 29.5 | 23.7 | 56 | 18.3 | 37.1 | 2.7 | 1.1 | muy_bajo | 1 |
| 2025-11-22 | 0 | 0 | 28.7 | 23.4 | 57 | 13.3 | 32.8 | 0.1 | 3.5 | muy_bajo | 1 |
| 2025-11-23 | 21 | 102 | 30.3 | 22.6 | 53 | 14.5 | 33.5 | 0 | 6.9 | bajo | 1 |
| 2025-11-24 | 45 | 580 | 32.2 | 22.7 | 44 | 19.3 | 39.2 | 0 | 12 | moderado | 1 |
| 2025-11-25 | 20 | 140 | 34.1 | 24.4 | 39 | 16.7 | 38.9 | 0 | 14.2 | moderado | 1 |
| 2025-11-26 | 19 | 242 | 34.8 | 23.3 | 41 | 16.2 | 39.6 | 0 | 15.2 | moderado | 1 |
| 2025-11-27 | 9 | 72 | 34.3 | 23.7 | 48 | 16.7 | 41.4 | 0.1 | 16.3 | moderado | 1 |
| 2025-11-28 | 22 | 191 | 33.5 | 23.8 | 45 | 16.6 | 40.7 | 0.1 | 17.2 | moderado | 1 |
| 2025-11-29 | 5 | 21 | 33.8 | 23.9 | 41 | 19 | 43.9 | 0 | 19.3 | moderado | 1 |
| 2025-11-30 | 4 | 29 | 33 | 24.2 | 45 | 18.4 | 43.9 | 0 | 19.9 | moderado | 1 |
| 2025-12-01 | 1 | 3 | 34.2 | 24.4 | 42 | 16.9 | 40.3 | 0 | 20 | moderado | 1 |
| 2025-12-02 | 3 | 20 | 34.1 | 24.5 | 44 | 14.7 | 38.5 | 0.1 | 19.6 | moderado | 1 |
| 2025-12-03 | 9 | 48 | 32.6 | 24.4 | 50 | 15.3 | 36.4 | 12.1 | 2.3 | muy_bajo | 1 |
| 2025-12-04 | 0 | 0 | 32.6 | 23.5 | 57 | 17.2 | 36 | 1.6 | 4.7 | muy_bajo | 1 |
| 2025-12-05 | 4 | 20 | 33.1 | 24.8 | 46 | 19.1 | 40.3 | 0.5 | 13.1 | moderado | 1 |
| 2025-12-06 | 0 | 0 | 31.8 | 23.6 | 48 | 14.7 | 38.2 | 0.2 | 12.8 | moderado | 1 |
| 2025-12-07 | 4 | 17 | 34.6 | 23.6 | 44 | 17.5 | 36.4 | 1.9 | 10.4 | bajo | 1 |
| 2025-12-08 | 5 | 25 | 33.7 | 24.8 | 49 | 18.2 | 41 | 0.2 | 14.8 | moderado | 1 |
| 2025-12-09 | 0 | 0 | 33.5 | 23.8 | 44 | 16.8 | 40.7 | 0 | 16.6 | moderado | 0 |
| 2025-12-10 | 0 | 0 | 34.8 | 23.7 | 35 | 15.2 | 37.4 | 0 | 20.2 | moderado | 0 |
| 2025-12-11 | 0 | 0 | 34.5 | 24.7 | 41 | 16.6 | 36.7 | 0 | 21.8 | alto | 0 |
| 2025-12-12 | 0 | 0 | 36 | 24.5 | 33 | 16.9 | 38.5 | 9.7 | 6.4 | 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: 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
- 11,171ha
- GWIS perimeter (Copernicus)
- Duration
- 50days
- 20 Oct 2025 – 8 Dec 2025
- Municipalities hit
- 2
- districts
- Started on
- 20 Oct
- 2025
- Heat detections
- 654
- in a single hotspot: 97 MW
- Danger at start
- 36
- High · FWI index
- Average daily power
- 152MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
20 Oct8 Dec
8 Dec 2025
How it evolved, day by day
20 Oct
3 Nov
18 Nov
30 Nov
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
36°high
49km/h · peak gust
30%lowest humidity
It had gone 7 days without rain (1 mm or more) when it started. Rain came after the fire: 9.7 mm on 12 Dec.
This area had burned before
27% of the perimeter overlaps earlier fires recorded since 2016: 2,387 ha in 2021, 501 ha in 2023, 88 ha in 2024.
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
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).
Berlin boundary: geoBoundaries · Federal Agency for Cartography and Geodesy (dl-de/by-2-0).
This compares size, not location: both shapes are at the same scale, north up, centred on each other.
What happened to each town
-
Antsalova where it started10,267 ha reached on 20 Oct1.5 %
-
3,861 ha reached on 29 Oct0.5 %
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 area0.69 ha
Residents≈ 450
Inside the perimeter there were about 0.69 hectares of built-up land and about 450 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) |
|---|---|---|---|---|---|
| 20 Oct | 32.6 °C | 35 % | 49 km/h | 0.0 mm | High 36 |
| 21 Oct | 31.9 °C | 45 % | 42 km/h | 0.1 mm | High 32 |
| 22 Oct | 32.8 °C | 45 % | 45 km/h | 0.0 mm | High 34 |
| 23 Oct | 35.0 °C | 38 % | 38 km/h | 0.0 mm | High 30 |
| 24 Oct | 35.0 °C | 35 % | 36 km/h | 0.0 mm | High 34 |
| 25 Oct | 35.3 °C | 40 % | 35 km/h | 0.0 mm | High 32 |
| 26 Oct | 35.4 °C | 39 % | 39 km/h | 0.1 mm | High 33 |
| 27 Oct | 35.6 °C | 40 % | 44 km/h | 0.1 mm | High 36 |
| 28 Oct | 33.9 °C | 49 % | 43 km/h | 0.0 mm | High 32 |
| 29 Oct | 33.2 °C | 51 % | 42 km/h | 0.1 mm | High 31 |
| 30 Oct | 34.0 °C | 48 % | 39 km/h | 0.2 mm | High 30 |
| 31 Oct | 35.1 °C | 43 % | 41 km/h | 0.2 mm | High 29 |
| 1 Nov | 36.2 °C | 30 % | 44 km/h | 0.5 mm | Very high 38 |
| 2 Nov | 35.5 °C | 40 % | 37 km/h | 0.6 mm | High 30 |
| 3 Nov | 35.1 °C | 47 % | 42 km/h | 0.1 mm | High 33 |
| 4 Nov | 36.2 °C | 40 % | 35 km/h | 0.3 mm | High 30 |
| 5 Nov | 34.4 °C | 48 % | 41 km/h | 1.2 mm | High 23 |
| 6 Nov | 35.0 °C | 41 % | 41 km/h | 0.4 mm | High 30 |
| 7 Nov | 34.1 °C | 41 % | 41 km/h | 0.1 mm | High 32 |
| 8 Nov | 34.5 °C | 43 % | 40 km/h | 0.8 mm | High 27 |
| 9 Nov | 35.0 °C | 39 % | 34 km/h | 0.6 mm | High 29 |
| 10 Nov | 34.5 °C | 42 % | 33 km/h | 12.7 mm | Low 7 |
| 11 Nov | 32.8 °C | 52 % | 28 km/h | 5.6 mm | Very low 4 |
| 12 Nov | 32.7 °C | 51 % | 30 km/h | 4.9 mm | Very low 3 |
| 13 Nov | 32.7 °C | 57 % | 36 km/h | 7.2 mm | Very low 2 |
| 14 Nov | 30.3 °C | 61 % | 39 km/h | 1.7 mm | Very low 4 |
| 15 Nov | 32.1 °C | 55 % | 36 km/h | 0.0 mm | Low 9 |
| 16 Nov | 31.9 °C | 57 % | 35 km/h | 0.2 mm | Low 10 |
| 17 Nov | 32.7 °C | 47 % | 34 km/h | 0.0 mm | Moderate 13 |
| 18 Nov | 33.0 °C | 47 % | 41 km/h | 0.1 mm | Moderate 16 |
| 19 Nov | 31.9 °C | 56 % | 39 km/h | 6.1 mm | Very low 3 |
| 20 Nov | 28.4 °C | 68 % | 32 km/h | 11.9 mm | Very low 0 |
| 21 Nov | 29.5 °C | 56 % | 37 km/h | 2.7 mm | Very low 1 |
| 22 Nov | 28.7 °C | 57 % | 33 km/h | 0.1 mm | Very low 4 |
| 23 Nov | 30.3 °C | 53 % | 34 km/h | 0.0 mm | Low 7 |
| 24 Nov | 32.2 °C | 44 % | 39 km/h | 0.0 mm | Moderate 12 |
| 25 Nov | 34.1 °C | 39 % | 39 km/h | 0.0 mm | Moderate 14 |
| 26 Nov | 34.8 °C | 41 % | 40 km/h | 0.0 mm | Moderate 15 |
| 27 Nov | 34.3 °C | 48 % | 41 km/h | 0.1 mm | Moderate 16 |
| 28 Nov | 33.5 °C | 45 % | 41 km/h | 0.1 mm | Moderate 17 |
| 29 Nov | 33.8 °C | 41 % | 44 km/h | 0.0 mm | Moderate 19 |
| 30 Nov | 33.0 °C | 45 % | 44 km/h | 0.0 mm | Moderate 20 |
| 1 Dec | 34.2 °C | 42 % | 40 km/h | 0.0 mm | Moderate 20 |
| 2 Dec | 34.1 °C | 44 % | 38 km/h | 0.1 mm | Moderate 20 |
| 3 Dec | 32.6 °C | 50 % | 36 km/h | 12.1 mm | Very low 2 |
| 4 Dec | 32.6 °C | 57 % | 36 km/h | 1.6 mm | Very low 5 |
| 5 Dec | 33.1 °C | 46 % | 40 km/h | 0.5 mm | Moderate 13 |
| 6 Dec | 31.8 °C | 48 % | 38 km/h | 0.2 mm | Moderate 13 |
| 7 Dec | 34.6 °C | 44 % | 36 km/h | 1.9 mm | Low 10 |
| 8 Dec | 33.7 °C | 49 % | 41 km/h | 0.2 mm | Moderate 15 |
| 9 Dec after | 33.5 °C | 44 % | 41 km/h | 0.0 mm | Moderate 17 |
| 10 Dec after | 34.8 °C | 35 % | 37 km/h | 0.0 mm | Moderate 20 |
| 11 Dec after | 34.5 °C | 41 % | 37 km/h | 0.0 mm | High 22 |
| 12 Dec after | 36.0 °C | 33 % | 38 km/h | 9.7 mm | Low 6 |
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
↔
Before · 13 Oct 2025
After · 15 Dec 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 11 November 2025 the air beside the fire reached 36 µg/m³ of PM2.5. That day averaged 17: 1.1 times the WHO daily guideline (15).
PM2.5 peak36 µg/m³
Days over the guideline4 days
PM1039 µg/m³
Optical depth0.61
WHO 15
25 Oct3 Nov12 Nov21 Nov30 Nov
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 · 654Every 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
- 3,590 haAntsalova 27 October 2026 · 18 days · 12 km away
- 2,987 haBelo Sur Tsiribihina12 September 2026 · 13 days · 20 km away
- 3,957 haAntsalovaAugust 2026 · 23 days · 22 km away
- 4,426 haBelo Sur Tsiribihina20 September 2024 · 23 days · 29 km away
- 2,881 haAntsalova26 October 2025 · 17 days · 36 km away
- 5,586 haAntsalova12 October 2025 · 39 days · 38 km away
Frequently asked questions
- How long did the Antsalova fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 20 October 2025 to 8 December 2025 (50 days). The perimeter dates it from 27 October 2025 to 1 December 2025.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 11,171 hectares (111.7 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire entered 2 municipalities: Antsalova (10,267 ha, 1.5 %); Belo Sur Tsiribihina (3,861 ha, 0.5 %).
- What was the weather like?
- During the fire the temperature reached 36.2 °C, humidity dropped to 30 % and gusts hit 49 km/h. The fire danger index (FWI) reached 38, class Very high.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Madagascar (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.
Satellite cross-check
History of this page · 3 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
- Area: 14,045 → 11,171 ha.
- Last day with fire: 1 December 2025 → 8 December 2025.
- Start date: 27 October 2025 → 20 October 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; 3 polygons grouped in this page.
- Dates adjusted with the VIIRS detections inside the perimeter, which said 27 October 2025 to 1 December 2025. 654 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.