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Ortíz fire, 12 December 2025 Ortíz

Out · last detection 29 Dec 2025, 18:04 UTC

The fire started on 12 December 2025 in Ortíz, Venezuela, and satellites saw it burning for 18 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 7,326 hectares from heat detections, spread across a single municipality.

It is the 5th largest in Guárico since 2016 (of 421 with a page). Number 6 in Venezuela in 2025, of 139.

Compare with…
Burnt area
7,326ha
GWIS perimeter (Copernicus)
Duration
18days
12 Dec 2025 – 29 Dec 2025
Municipalities hit
1
municipalities
Started on
12 Dec
2025
Heat detections
113
in a single hotspot: 46 MW
Danger at start
27
High · FWI index
Average daily power
65MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 12 Dec29 Dec
29 Dec 2025

How it evolved, day by day

15 Dec 2025 · 25 MW · 2 16 Dec 2025 · 1 MW · 2 20 Dec 2025 · 162 MW · 16 23 Dec 2025 · 137 MW · 26 24 Dec 2025 · 78 MW · 15 25 Dec 2025 · 9 MW · 2 26 Dec 2025 · 56 MW · 10 27 Dec 2025 · 136 MW · 20 28 Dec 2025 · 33 MW · 15 29 Dec 2025 · 13 MW · 5
15 Dec 20 Dec 24 Dec 26 Dec 28 Dec

Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.

The weather it burned in

39°high
46km/h · peak gust
16%lowest humidity

It had gone 4 days without rain (1 mm or more) when it started.

This area had burned before

71% of the perimeter overlaps earlier fires recorded since 2016: 1,025 ha in 2016, 2,007 ha in 2019, 859 ha in 2020, 2,423 ha in 2021, 2,026 ha in 2022, 2,159 ha in 2023, 1,624 ha in 2024. Part of it burned more than once, so the yearly figures add up to more than the 5,213 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 4.6% of the area of London (73 km² against 1,583 km²).

London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).

This compares size, not location: both shapes are at the same scale, north up, centred on each other.

What happened to each town

  1. Ortíz 23,755 inhabitants where it started
    7,369 ha reached on 15 Dec
    1.8 %

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 2025
Built-up area< 0.1 ha
Residents< 20

Inside the perimeter there was no noticeable 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)

Day High Min. humidity Peak gust Rain Danger (FWI)
12 Dec 38.3 °C 24 % 46 km/h 0.0 mm High 27
13 Dec 37.4 °C 25 % 38 km/h 0.0 mm High 28
14 Dec 37.5 °C 29 % 42 km/h 0.0 mm High 29
15 Dec 38.4 °C 23 % 39 km/h 0.0 mm High 30
16 Dec 38.1 °C 28 % 38 km/h 0.0 mm High 30
17 Dec 39.2 °C 24 % 40 km/h 0.0 mm High 32
18 Dec 37.0 °C 25 % 39 km/h 0.0 mm High 34
19 Dec 38.7 °C 18 % 37 km/h 0.0 mm High 37
20 Dec 36.8 °C 32 % 38 km/h 0.0 mm High 34
21 Dec 37.9 °C 28 % 41 km/h 0.0 mm High 36
22 Dec 38.6 °C 22 % 36 km/h 0.0 mm High 37
23 Dec 37.4 °C 26 % 43 km/h 0.0 mm Very high 39
24 Dec 38.3 °C 27 % 33 km/h 0.0 mm Very high 39
25 Dec 39.0 °C 18 % 33 km/h 0.0 mm Very high 42
26 Dec 37.9 °C 16 % 34 km/h 0.0 mm Very high 42
27 Dec 37.9 °C 24 % 37 km/h 0.0 mm Very high 45
28 Dec 37.6 °C 36 % 44 km/h 0.1 mm High 37
29 Dec 36.9 °C 38 % 44 km/h 1.1 mm High 26
30 Dec after 37.7 °C 30 % 44 km/h 0.6 mm High 33
31 Dec after 36.4 °C 33 % 36 km/h 0.0 mm High 32
1 Jan after 38.3 °C 32 % 41 km/h 0.0 mm High 34
2 Jan after 37.8 °C 36 % 35 km/h 0.2 mm High 34
3 Jan after 37.6 °C 27 % 35 km/h 0.0 mm High 36
4 Jan after 38.4 °C 27 % 35 km/h 0.2 mm High 36
5 Jan after 38.5 °C 18 % 35 km/h 0.0 mm Very high 43
6 Jan after 38.9 °C 17 % 34 km/h 0.0 mm Very high 46
7 Jan after 36.8 °C 23 % 35 km/h 0.0 mm Very high 48
8 Jan after 37.6 °C 26 % 40 km/h 0.0 mm Very high 47

Before and after, from space

Drag the line to compare the same ground before the fire and after it.

Before · 5 Dec 2025
After · 5 Jan 2026

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 · Copernicus

On 24 December 2025 the air beside the fire reached 14 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak14 µg/m³
Days over the guideline0 days
PM1016 µg/m³
Optical depth0.27
15161718192021222324252627282930311
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 · 113Every 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 timeSatelliteFRP (MW)LatLon

Other fires nearby

All fires in Venezuela ›

Frequently asked questions

How long did the Ortíz fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 12 December 2025 to 29 December 2025 (18 days). The perimeter dates it from 17 December 2025 to 29 December 2025.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 7,326 hectares (73.3 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Ortíz (7,369 ha, 1.8 %).
What was the weather like?
During the fire the temperature reached 39.2 °C, humidity dropped to 16 % and gusts hit 46 km/h. The fire danger index (FWI) reached 45, class Very high.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Venezuela (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: 911 · 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.
  1. Start date: 17 December 2025 → 12 December 2025.

RSS Changes to this page

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
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We will only use your email to reply about this report. Privacy. This is not an emergency service: if there is a fire now, call 911.

How we know this
  • Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery; 2 polygons grouped in this page.
  • Dates adjusted with the VIIRS detections inside the perimeter, which said 17 December 2025 to 29 December 2025. 113 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.

How we build fire pages: methodology ›

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 (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.