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BO · Bolivia · –

San Ignacio fire, 24 September 2019 San Ignacio

Out · last detection 5 Oct 2019, 05:13 UTC

The fire started on 24 September 2019 in San Ignacio, Bolivia, and satellites saw it burning for 12 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,223 hectares from heat detections, spread across a single municipality.

It is the 536th largest in Beni since 2016 (of 859 with a page). Number 153 in Bolivia in 2019, of 218.

Burnt area
4,223ha
GWIS perimeter (Copernicus)
Duration
12days
24 Sept 2019 – 5 Oct 2019
Municipalities hit
1
municipalities
Started on
24 Sept
2019
Heat detections
149
in a single hotspot: 102 MW
Danger at start
22
High · FWI index
Average daily power
200MW
detected power per day, on average

Where it burned

HOTSPOTS BY DAY 24 Sept5 Oct
5 Oct 2019

How it evolved, day by day

24 Sept 2019 · 5 MW · 1 25 Sept 2019 · 306 MW · 8 26 Sept 2019 · 44 MW · 4 27 Sept 2019 · 106 MW · 12 28 Sept 2019 · 764 MW · 37 29 Sept 2019 · 627 MW · 43 30 Sept 2019 · 359 MW · 25 1 Oct 2019 · 4 MW · 1 2 Oct 2019 · 32 MW · 5 3 Oct 2019 · 47 MW · 5 4 Oct 2019 · 103 MW · 7 5 Oct 2019 · 1 MW · 1
24 Sept 28 Sept 3 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

39°high
63km/h · peak gust
21%lowest humidity

It had gone 2 days without rain (1 mm or more) when it started. Rain came after the fire: 11.1 mm on 6 Oct.

This area had burned before

86% of the perimeter overlaps earlier fires recorded since 2016: 2,218 ha in 2017, 2,951 ha in 2018. Part of it burned more than once, so the yearly figures add up to more than the 3,644 ha that had burned before.

How big is it?

10 km
It burned the equivalent of 2.7% of the area of London (42 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. San Ignacio 21,584 inhabitants where it started
    4,253 ha reached on 24 Sept
    0.2 %

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 area< 0.1 ha
Residents< 20

Inside the perimeter there was no noticeable built-up land and almost nobody lived there (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 39.0 °C 29 % 23 km/h 0.0 mm High 22
25 Sept 35.4 °C 36 % 38 km/h 0.3 mm High 27
26 Sept 35.8 °C 24 % 31 km/h 0.0 mm High 24
27 Sept 37.5 °C 21 % 22 km/h 0.0 mm High 25
28 Sept 38.2 °C 30 % 36 km/h 0.0 mm High 32
29 Sept 38.7 °C 28 % 35 km/h 0.0 mm High 34
30 Sept 39.0 °C 34 % 48 km/h 0.0 mm Very high 38
1 Oct 33.8 °C 53 % 63 km/h 9.7 mm High 25
2 Oct 33.2 °C 48 % 50 km/h 4.7 mm Very low 4
3 Oct 27.8 °C 68 % 32 km/h 5.5 mm Very low 0
4 Oct 32.5 °C 53 % 33 km/h 3.1 mm Very low 1
5 Oct 27.8 °C 80 % 38 km/h 47.8 mm Very low 0
6 Oct after 19.2 °C 85 % 31 km/h 11.1 mm Very low 0

Its twins: fires that started in the same weather

It started with an FWI of 22.2, a minimum humidity of 29% and 2 days without rain. Fires in the area that started in weather like this since 2016: 22.

FWI at the start 22.2
Minimum humidity 29 %
Days without rain 2
this fire chosen twins rest of the area
Almost identicalSimilar

Outlines of the closest twins

Santa Ana fire, November 2023
8,019 ha 10 days FWI 22.3 Min. humidity 29 % 90 km away, in 2023

First rain (1 mm or more) after it ended: 18.1 mm on 21 Nov.

What happened to them

11 days
median duration
5,928 ha
median area
27 %
went past 10,000 ha
8.6 mm
rain at the end (median; 22 of 22 had it)

It burned an area similar to its twins (4,223 ha against a median of 5,928 ha) and lasted 12 days, against 11 days.

All of them had rain in the ten days after the end: the first rainy day brought a median of 8.6 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

11.1 mmfirst rain
6 Octthe day after it ended
63km/h · max. gust

It was considered over on 5 Oct, and on 6 Oct 11.1 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 22 of 22, with a median of 8.6 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 2019
After · 12 Oct 2019

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 · 149Every 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 Bolivia

Frequently asked questions

How long did the San Ignacio fire last?
GWIS (Copernicus) dates it between 24 September 2019 and 5 October 2019: 12 days between the first and last heat detection of the perimeter.
How much area did it burn?
The perimeter GWIS (Copernicus) rebuilt from heat detections is 4,223 hectares (42.2 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered San Ignacio (4,253 ha, 0.2 %).
What was the weather like?
During the fire the temperature reached 39.0 °C, humidity dropped to 21 % and gusts hit 63 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 Bolivia (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: 22. Their median duration was 11 days and their median area 5,928 ha; 27 % went past 10,000 ha. All of them had rain in the ten days after the end: the first rainy day brought a median of 8.6 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: 119 · 110 · Emergency number and official warnings

Satellite cross-check

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

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 119 · 110.

How we know this
  • Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery.
  • Dates from the perimeter: the VIIRS detections inside it did not change them. 149 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 ADM3 (Public Domain). 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.