How long did the Yvy Ya´U fire last?

According to the heat detections seen by satellite inside the perimeter, it burned from 2 September 2017 to 14 September 2017 (13 days). The perimeter dates it from 8 September 2017 to 13 September 2017.

How much area did it burn?

The perimeter GWIS (Copernicus) rebuilt from heat detections is 2,005 hectares (20.0 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire entered 2 municipalities: Yvy Ya´U (1,614 ha, 0.7 %); Pedro Juan Caballero (397 ha, 0.1 %).

What was the weather like?

During the fire the temperature reached 35.7 °C, humidity dropped to 18 % and gusts hit 58 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 Paraguay (geoBoundaries). It is not an official report.

PY · Paraguay · 2017-09-02 → 2017-09-14

Yvy Ya´U fire, 2 September 2017 Yvy Ya´U, Pedro Juan Caballero

Out · last detection 14 Sept 2017, 17:24 UTC

The fire started on 2 September 2017 in Yvy Ya´U, Paraguay, and satellites saw it burning for 13 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 2,005 hectares from heat detections, spread across 2 municipalities.

It is the 118th largest in Concepción since 2016 (of 195 with a page). Number 135 in Paraguay in 2017, of 261.

The power measured by the satellite is low (28.2 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.

Compare with…

Suggestions: Yvy Ya´U · 2021 Pedro Juan Caballero · 2021 Bella Vista · 2019 Bella Vista · 2021

Burnt area: 2,005ha; GWIS perimeter (Copernicus)
Duration: 13days; 2 Sept 2017 – 14 Sept 2017
Municipalities hit: 2; districts
Started on: 2 Sept; 2017
Heat detections: 73; in a single hotspot: 28 MW
Danger at start: 23; High · FWI index
Average daily power: 44MW; detected power per day, on average

HOTSPOTS BY DAY 2 Sept14 Sept

Play back 14 Sept 2017

How it evolved, day by day

2 Sept 4 Sept 8 Sept 10 Sept 13 Sept

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

58km/h · peak gust

18%lowest humidity

It had gone 12 days without rain (1 mm or more) when it started.

This area had burned before

22% of the perimeter overlaps earlier fires recorded since 2016: 448 ha in 2016.

How big is it?

It burned the equivalent of 1.3% of the area of London (20 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

Yvy Ya´U where it started

1,614 ha reached on 2 Sept

0.7 %
Pedro Juan Caballero

397 ha reached on 3 Sept

0.1 %

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 2015

Built-up area0.40 ha

Residents≈ 40

Inside the perimeter there were about 0.40 hectares of built-up land and about 40 residents (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)

Day	High	Min. humidity	Peak gust	Rain	Danger (FWI)
2 Sept	33.5 °C	26 %	46 km/h	0.0 mm	High 23
3 Sept	33.5 °C	25 %	42 km/h	0.0 mm	High 24
4 Sept	34.6 °C	22 %	34 km/h	0.0 mm	High 26
5 Sept	24.8 °C	47 %	31 km/h	0.0 mm	Moderate 17
6 Sept	31.4 °C	30 %	25 km/h	0.0 mm	Moderate 17
7 Sept	33.3 °C	18 %	34 km/h	0.0 mm	High 26
8 Sept	33.9 °C	20 %	37 km/h	0.0 mm	High 28
9 Sept	35.4 °C	22 %	41 km/h	0.0 mm	High 31
10 Sept	34.4 °C	23 %	58 km/h	0.0 mm	High 38
11 Sept	26.3 °C	47 %	29 km/h	0.0 mm	Moderate 20
12 Sept	31.9 °C	42 %	27 km/h	0.8 mm	Moderate 15
13 Sept	35.7 °C	18 %	36 km/h	0.0 mm	High 32
14 Sept	33.2 °C	30 %	54 km/h	0.0 mm	High 35
15 Sept after	27.7 °C	57 %	43 km/h	0.6 mm	Moderate 19
16 Sept after	17.7 °C	67 %	36 km/h	0.0 mm	Moderate 13
17 Sept after	24.6 °C	39 %	35 km/h	0.0 mm	Moderate 18
18 Sept after	30.6 °C	32 %	18 km/h	0.0 mm	High 22
19 Sept after	35.2 °C	18 %	33 km/h	0.0 mm	High 35
20 Sept after	35.2 °C	18 %	44 km/h	0.0 mm	Very high 40
21 Sept after	36.1 °C	17 %	41 km/h	0.0 mm	Very high 41
22 Sept after	31.1 °C	36 %	32 km/h	0.0 mm	High 30
23 Sept after	27.5 °C	51 %	32 km/h	0.0 mm	High 22
24 Sept after	29.5 °C	37 %	31 km/h	0.4 mm	Moderate 21

Before and after, from space

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

↔

Before · 26 Aug 2017

After · 21 Sept 2017

Before After

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 · 73Every 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

All fires in Paraguay ›

Frequently asked questions

How long did the Yvy Ya´U fire last?: According to the heat detections seen by satellite inside the perimeter, it burned from 2 September 2017 to 14 September 2017 (13 days). The perimeter dates it from 8 September 2017 to 13 September 2017.
How much area did it burn?: The perimeter GWIS (Copernicus) rebuilt from heat detections is 2,005 hectares (20.0 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire entered 2 municipalities: Yvy Ya´U (1,614 ha, 0.7 %); Pedro Juan Caballero (397 ha, 0.1 %).
What was the weather like?: During the fire the temperature reached 35.7 °C, humidity dropped to 18 % and gusts hit 58 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 Paraguay (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: 132 · 911 · Emergency number and official warnings ›

Satellite cross-check

NASA FIRMS ↗
GWIS · Copernicus ↗

History of this page · 2 Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.

25 October 2026 Last day with fire: 13 September 2017 → 14 September 2017.
25 October 2026 Start date: 8 September 2017 → 2 September 2017.

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.

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Dates or duration Place or towns Burned area Name It was not a wildfire Same fire as another page Something else

What really happened?

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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 132 · 911.

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 8 September 2017 to 13 September 2017. 73 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.

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 4.0 (CC BY 4.0)). 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.

Where it burned