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AR · Argentina · –

Punilla fire, 24 September 2020 Cruz del Eje, Punilla

Out · last detection 13 Oct 2020, 17:28 UTC

The fire started on 24 September 2020 in Punilla, Argentina, and satellites saw it burning for 20 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 56,747 hectares from heat detections, spread across 2 municipalities.

It is the largest fire in Córdoba since 2016 (of 91 with a page). Number 3 in Argentina in 2020, of 669.

Compare with…
Burnt area
56,747ha
GWIS perimeter (Copernicus)
Duration
20days
24 Sept 2020 – 13 Oct 2020
Municipalities hit
2
departments
Started on
24 Sept
2020
Heat detections
2,816
in a single hotspot: 526 MW
Danger at start
44
Very high · FWI index
Average daily power
3.7GW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 24 Sept13 Oct
13 Oct 2020

How it evolved, day by day

24 Sept 2020 · 5,014 MW · 182 25 Sept 2020 · 1,325 MW · 85 26 Sept 2020 · 9,040 MW · 175 27 Sept 2020 · 6,623 MW · 356 28 Sept 2020 · 21,091 MW · 648 29 Sept 2020 · 4,022 MW · 337 30 Sept 2020 · 436 MW · 48 1 Oct 2020 · 3,415 MW · 112 2 Oct 2020 · 15,262 MW · 381 3 Oct 2020 · 3,507 MW · 362 4 Oct 2020 · 375 MW · 15 5 Oct 2020 · 79 MW · 9 6 Oct 2020 · 31 MW · 7 7 Oct 2020 · 194 MW · 19 8 Oct 2020 · 439 MW · 24 9 Oct 2020 · 1,650 MW · 19 10 Oct 2020 · 1,389 MW · 31 11 Oct 2020 · 3 MW · 4 12 Oct 2020 · 7 MW · 1 13 Oct 2020 · 6 MW · 1
24 Sept 28 Sept 2 Oct 6 Oct 10 Oct

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

The weather it burned in

32°high
67km/h · peak gust
17%lowest humidity

It had gone 21 days without rain (1 mm or more) when it started. Rain came after the fire: 1.7 mm on 14 Oct.

This area had burned before

No earlier perimeters overlap this fire since 2016, when the satellite record begins.

How big is it?

10 km
It burned the equivalent of 36% of the area of London (567 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. 51,739 ha reached on 25 Sept
    7.6 %
  2. Punilla where it started
    5,398 ha reached on 24 Sept
    2.2 %

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 2020
Built-up area8.9 ha
Residents≈ 400

Inside the perimeter there were about 8.9 hectares of built-up land and about 400 residents (GHSL 2020, 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)

Day High Min. humidity Peak gust Rain Danger (FWI)
24 Sept 29.2 °C 26 % 49 km/h 0.0 mm Very high 44
25 Sept 27.7 °C 43 % 36 km/h 0.5 mm High 32
26 Sept 25.9 °C 30 % 41 km/h 0.0 mm High 22
27 Sept 20.4 °C 22 % 43 km/h 0.0 mm High 34
28 Sept 22.4 °C 18 % 40 km/h 0.0 mm High 31
29 Sept 27.9 °C 17 % 56 km/h 0.0 mm Very high 49
30 Sept 31.6 °C 17 % 41 km/h 0.0 mm Very high 39
1 Oct 21.1 °C 22 % 52 km/h 0.0 mm Very high 40
2 Oct 17.8 °C 25 % 66 km/h 0.0 mm Very high 46
3 Oct 11.5 °C 35 % 67 km/h 0.0 mm Very high 40
4 Oct 17.3 °C 37 % 42 km/h 0.0 mm Moderate 18
5 Oct 19.0 °C 27 % 30 km/h 0.0 mm Moderate 20
6 Oct 23.7 °C 24 % 30 km/h 0.0 mm High 26
7 Oct 24.8 °C 23 % 35 km/h 0.0 mm High 31
8 Oct 25.6 °C 25 % 31 km/h 0.2 mm High 30
9 Oct 26.2 °C 22 % 36 km/h 0.0 mm High 34
10 Oct 27.3 °C 20 % 51 km/h 0.0 mm Extreme 54
11 Oct 24.3 °C 18 % 45 km/h 0.0 mm High 33
12 Oct 25.8 °C 18 % 30 km/h 0.0 mm High 35
13 Oct 26.7 °C 21 % 36 km/h 0.0 mm Very high 42
14 Oct after 23.3 °C 34 % 28 km/h 1.7 mm High 28

Its twins: fires that started in the same weather

It started with an FWI of 43.6, a minimum humidity of 26% and 21 days without rain. Fires in the area that started in weather like this since 2016: 21.

FWI at the start 43.6
Minimum humidity 26 %
Days without rain 21
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Junín fire, September 2016
3,248 ha 5 days FWI 38.6 Min. humidity 25 % 143 km away, in 2016

First rain (1 mm or more) after it ended: none in the following ten days.

What happened to them

4 days
median duration
3,040 ha
median area
100 %
went past 1,000 ha
4.4 mm
rain at the end (median; 17 of 21 had it)

It was 18.7 times larger than the median of its twins and lasted 20 days, against 4 days.

None of its 21 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 4 of 21, 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 4.4 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

1.7 mmfirst rain
14 Octthe day after it ended
67km/h · max. gust

It was considered over on 13 Oct, and on 14 Oct 1.7 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 17 of 21, with a median of 4.4 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.

How we calculate it

Before and after, from space

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

Before · 17 Sept 2020
After · 20 Oct 2020

If the day is cloudy, change the date: each satellite passes once a day. In false colour the burnt ground looks brown or red.

Detections table · 2,816Every 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 Argentina

Frequently asked questions

How long did the Punilla fire last?
According to the heat detections seen by satellite inside the perimeter, it burned from 24 September 2020 to 13 October 2020 (20 days). The perimeter dates it from 25 September 2020 to 10 October 2020.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 56,747 hectares (567.5 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Cruz del Eje (51,739 ha, 7.6 %); Punilla (5,398 ha, 2.2 %).
What was the weather like?
During the fire the temperature reached 31.6 °C, humidity dropped to 17 % and gusts hit 67 km/h. The fire danger index (FWI) reached 54, class Extreme.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Argentina (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: 21. Their median duration was 4 days and their median area 3,040 ha; 100 % went past 1,000 ha. None of its 21 twins burned more. The weather on the first day does not explain everything: the wind in the following days, the fuel and the firefighting also count. In 4 of 21, 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 4.4 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: 911 · 100 · Emergency number and official warnings

Satellite cross-check

History of this page · 2 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
  1. Last day with fire: 10 October 2020 → 13 October 2020.
  2. Start date: 25 September 2020 → 24 September 2020.

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
What do you think is wrong?

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 · 100.

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 25 September 2020 to 10 October 2020. 2,816 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 2020, 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 (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.