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Boca do Acre fire, July 2016 Boca do Acre

Out · last detection 8 Aug 2016, 18:06 UTC

The fire started on 23 July 2016 in Boca do Acre, Brazil, and satellites saw it burning for 17 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 4,192 hectares from heat detections, spread across a single municipality.

It is the 233th largest in Amazonas since 2016 (of 450 with a page). Number 377 in Brazil in 2016, of 649.

Burnt area
4,192ha
GWIS perimeter (Copernicus)
Duration
17days
23 Jul 2016 – 8 Aug 2016
Municipalities hit
1
municipalities
Started on
23 Jul
2016
Heat detections
214
in a single hotspot: 67 MW
Danger at start
24
High · FWI index
Energy released
2.2GW
sum of detected power

Where it burned

8 Aug 2016
HOTSPOTS BY DAY 23 Jul8 Aug

How it evolved, day by day

2324252627282931235678

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

The weather it burned in

37°high
41km/h · peak gust
28%lowest humidity

It had gone 9 days without rain (1 mm or more) when it started. Rain came after the fire: 7.8 mm on 16 Aug.

This area had burned before

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

What happened to each town

  1. Boca do Acre 35,447 inhabitants where it started
    4,224 ha reached on 23 Jul
    0.2 %

Burnt area inside each municipality, from crossing the GWIS perimeter with administrative boundaries. The distance is from the town centre to the nearest fire: staying a kilometre away does not mean it reached the houses.

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)
23 Jul 34.7 °C 36 % 18 km/h 0.0 mm High 24
24 Jul 35.1 °C 34 % 17 km/h 0.0 mm High 25
25 Jul 35.4 °C 36 % 20 km/h 0.0 mm High 28
26 Jul 34.1 °C 42 % 24 km/h 0.0 mm High 28
27 Jul 35.0 °C 38 % 32 km/h 0.0 mm High 30
28 Jul 34.2 °C 37 % 33 km/h 0.0 mm High 30
29 Jul 35.0 °C 33 % 28 km/h 0.0 mm High 30
30 Jul 35.6 °C 31 % 19 km/h 0.0 mm High 30
31 Jul 35.9 °C 31 % 14 km/h 0.0 mm High 28
1 Aug 36.8 °C 30 % 18 km/h 0.0 mm High 31
2 Aug 35.9 °C 31 % 28 km/h 0.0 mm High 32
3 Aug 36.4 °C 28 % 28 km/h 0.0 mm High 32
4 Aug 36.1 °C 33 % 15 km/h 0.0 mm High 33
5 Aug 36.7 °C 34 % 22 km/h 0.0 mm High 33
6 Aug 36.2 °C 40 % 29 km/h 0.0 mm High 32
7 Aug 35.7 °C 43 % 23 km/h 0.0 mm High 30
8 Aug 32.0 °C 61 % 28 km/h 6.8 mm Very low 4
9 Aug after 36.2 °C 43 % 28 km/h 4.1 mm Low 7
10 Aug after 27.5 °C 65 % 41 km/h 6.2 mm Very low 2
11 Aug after 30.7 °C 45 % 29 km/h 0.0 mm Low 8
12 Aug after 34.0 °C 46 % 18 km/h 0.3 mm Moderate 14
13 Aug after 35.1 °C 43 % 15 km/h 0.1 mm Moderate 15
14 Aug after 35.9 °C 48 % 26 km/h 0.0 mm Moderate 17
15 Aug after 36.0 °C 46 % 29 km/h 0.2 mm Moderate 18
16 Aug after 34.5 °C 53 % 33 km/h 7.8 mm Very low 3

Before and after, from space

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

Before · 16 Jul 2016
After · 15 Aug 2016

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 · 214Every 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 Brazil ›

Frequently asked questions

How long did the Boca do Acre fire last?
GWIS (Copernicus) dates it between 23 July 2016 and 8 August 2016: 17 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 4,192 hectares (41.9 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Boca do Acre (4,224 ha, 0.2 %).
What was the weather like?
During the fire the temperature reached 36.8 °C, humidity dropped to 28 % and gusts hit 41 km/h. The fire danger index (FWI) reached 33, class High.
Where does this data come from?
From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Brazil (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: 193

Satellite cross-check

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 193.

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.