Burned area
satellite only3,283ha
Perimeter published by GWIS (Copernicus).
- Source
- GWIS (Copernicus)
- Date
- 28 Aug 2022 – 11 Sept 2022
+− cross-check
No official record is matched to this page to compare it with.
BR · Brazil · –
Altamira fire, 28 August 2022 Altamira
Out · last detection 11 Sept 2022, 17:48 UTC
The fire started on 28 August 2022 in Altamira, Brazil, and satellites saw it burning for 15 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,283 hectares from heat detections, spread across a single municipality.
It is the 828th largest in Pará since 2016 (of 957 with a page). Number 591 in Brazil in 2022, of 682.
Use this data
Compare with…
Use this data
Fire page data · version 2026-10-24matches the official recordwith caveatssatellite onlymodel
When copying, the sentence is
Tick the figures you want: they make up the lede and the CSV.
Duration by satellite
satellite only15days
28 Aug 2022 to 11 Sept 2022: first and last day with fire on the page.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- last detection: 11 Sept 2022, 17:48 UTC
+− cross-check
Satellites pass a few times a day and cloud or smoke can hide the fire: a lack of detections is not an official extinction. Each country’s emergency service declares a fire contained or out.
Start
satellite only28 Aug 2022
First day with fire seen by the satellites or the perimeter.
- Source
- GWIS (Copernicus) · NASA FIRMS · VIIRS
- Date
- 28 Aug 2022
+− cross-check
No official record is matched to this page, so the alert time and the cause are not known here.
Hotspots
satellite only206
VIIRS detections at 375 m. Most intense hotspot: 101 MW.
- Source
- NASA FIRMS · VIIRS (Suomi NPP)
- Date
- 28 Aug 2022 – 11 Sept 2022
+− cross-check
There is no official record to compare with. Each hotspot is a pixel detected in one satellite pass, not a separate fire.
The worst day
satellite only611MW
Total radiative power on 4 September 2022; hotspots that day: 20.
- Source
- NASA FIRMS · VIIRS (FRP)
- Date
- 4 Sept 2022
+− cross-check
Fire radiative power (FRP) measures the energy the fire gives off when the satellite passes. Added up by day, it compares intensity, not area.
Danger at the start
model37.1FWI · high
Fire Weather Index (Canadian system) computed by WorldFires for the day the fire started. Consecutive days without rain before: 60.
- Source
- WorldFires calculation (Canadian FWI system)
- Date
- 28 Aug 2022, local noon
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
This is an index computed from weather model data, not a measurement of the fire nor an official warning. Danger warnings are issued by each country’s authority. Emergency number and official warnings
Weather during the fire
model36.8°C · 27% RH
High of 36.8 °C and minimum humidity of 27% on 30 August 2022; gusts of 41 km/h on 3 September 2022.
- Source
- weather model at the fire’s grid cell
- Date
- 28 Aug 2022 – 11 Sept 2022
- Model
- ERA5 0,25° (ECMWF · Copernicus C3S) · Open-Meteo.com
+− cross-check
These are model values for a cell of about 25 km, not from a weather station: they may differ from what was measured on the ground.
This page’s change log has been kept since 24 October 2026: every night what it publishes is compared and the difference is logged. Anything earlier is reconstructed from each source’s date and marked as reconstructed.
Show
-
· reconstructed GHSLPopulation and built-up area computed
-
· reconstructed weatherWeather and FWI computed from the ERA5 reanalysis
What was saved on 24 October 2026
Every night a snapshot of what the page shows is saved. If anything changes, it appears in the list as a log entry.
- Area
- 3,283 ha
- Dates
- 28 Aug 2022 – 11 Sept 2022
- Name
- Altamira
- Official record
- —
Versioned permanent link
https://worldfires.org/en/fire/altamira-2022-08-24?v=2026-10-24A version keeps the area, dates, name and official record; the area as it was logged (changes under 2% are not logged). The map, hotspots and weather always show today’s data.
Citation
A lede of about 60 words figures only, no adjectives
CSV for this fire altamira-2022-08-24.csv · daily, no individual hotspots
| fecha | focos_viirs | frp_mw | tmax_c | tmin_c | hr_min_pct | viento_max_kmh | racha_max_kmh | precip_mm | fwi | clase_fwi | dentro_del_incendio |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022-08-23 | 0 | 0 | 34.5 | 20.7 | 29 | 10.9 | 30.6 | 0 | 37.1 | alto | 0 |
| 2022-08-24 | 0 | 0 | 35 | 22.3 | 33 | 10.7 | 30.2 | 0 | 36.5 | alto | 0 |
| 2022-08-25 | 0 | 0 | 32.2 | 22.1 | 45 | 9.3 | 31.3 | 0 | 28.5 | alto | 0 |
| 2022-08-26 | 0 | 0 | 33 | 22.1 | 46 | 11.1 | 36.4 | 4.2 | 7.7 | bajo | 0 |
| 2022-08-27 | 0 | 0 | 33.9 | 22 | 38 | 10 | 41 | 0 | 21.1 | moderado | 0 |
| 2022-08-28 | 19 | 118 | 35 | 22.3 | 28 | 13 | 32.8 | 0 | 32.5 | alto | 1 |
| 2022-08-29 | 20 | 258 | 36.3 | 21.6 | 23 | 11.9 | 28.8 | 0 | 36.5 | alto | 1 |
| 2022-08-30 | 18 | 99 | 36.8 | 20.4 | 27 | 9.7 | 27.4 | 0 | 35 | alto | 1 |
| 2022-08-31 | 33 | 399 | 34.8 | 23.3 | 30 | 8.6 | 25.2 | 0 | 34.4 | alto | 1 |
| 2022-09-01 | 26 | 347 | 36.2 | 22.4 | 27 | 13.2 | 35.6 | 0 | 38.8 | muy_alto | 1 |
| 2022-09-02 | 18 | 127 | 36.4 | 22.1 | 23 | 14.2 | 38.5 | 0 | 40.1 | muy_alto | 1 |
| 2022-09-03 | 22 | 122 | 35.8 | 22.1 | 25 | 15.6 | 40.7 | 0 | 41.8 | muy_alto | 1 |
| 2022-09-04 | 20 | 611 | 35.9 | 20.8 | 28 | 13.2 | 34.9 | 0 | 39.8 | muy_alto | 1 |
| 2022-09-05 | 19 | 80 | 35.2 | 22.6 | 38 | 11.1 | 36 | 0 | 33.4 | alto | 1 |
| 2022-09-06 | 0 | 0 | 34.3 | 23.5 | 43 | 10.3 | 34.9 | 0 | 29.7 | alto | 1 |
| 2022-09-07 | 3 | 14 | 33.7 | 22.9 | 42 | 11.4 | 33.5 | 0.1 | 30.4 | alto | 1 |
| 2022-09-08 | 1 | 4 | 33.9 | 23.2 | 41 | 10.2 | 38.9 | 0 | 29.7 | alto | 1 |
| 2022-09-09 | 0 | 0 | 34.5 | 23.1 | 35 | 11.6 | 34.2 | 0 | 30.9 | alto | 1 |
| 2022-09-10 | 6 | 82 | 36.3 | 23.5 | 31 | 12.2 | 34.9 | 0 | 33.6 | alto | 1 |
| 2022-09-11 | 1 | 6 | 35.8 | 23.4 | 34 | 10.4 | 21.6 | 0 | 32.3 | alto | 1 |
| 2022-09-12 | 0 | 0 | 34.6 | 24 | 44 | 9.4 | 23 | 0.1 | 29 | alto | 0 |
| 2022-09-13 | 0 | 0 | 32.3 | 23.6 | 49 | 9.3 | 28.8 | 0.2 | 25.7 | alto | 0 |
| 2022-09-14 | 0 | 0 | 34.7 | 21.8 | 39 | 9 | 37.1 | 0.2 | 26.4 | alto | 0 |
| 2022-09-15 | 0 | 0 | 36.3 | 23 | 31 | 9.9 | 26.6 | 0 | 31.7 | alto | 0 |
| 2022-09-16 | 0 | 0 | 33.3 | 23.5 | 46 | 7.9 | 17.6 | 0 | 26.7 | alto | 0 |
| 2022-09-17 | 0 | 0 | 35.2 | 23.3 | 46 | 9.3 | 28.4 | 3.2 | 9.5 | bajo | 0 |
It is generated in your browser from this page’s data: one file per fire, aggregated by day and without individual hotspots.
Live widget for your story
It updates itself while the fire is still active and links to this page. Free, with the attribution shown at the bottom.
Sources for this page: GWIS (Copernicus), NASA FIRMS (VIIRS), ERA5 (ECMWF/Copernicus C3S) · Open-Meteo.com (CC BY 4.0), GHSL (JRC). Open-Meteo.com · How we build fire pages: methodology
- Burnt area
- 3,283ha
- GWIS perimeter (Copernicus)
- Duration
- 15days
- 28 Aug 2022 – 11 Sept 2022
- Municipalities hit
- 1
- municipalities
- Started on
- 28 Aug
- 2022
- Heat detections
- 206
- in a single hotspot: 101 MW
- Danger at start
- 37
- High · FWI index
- Average daily power
- 174MW
- detected power per day, on average
Where it burned
HOTSPOTS BY DAY
28 Aug11 Sept
11 Sept 2022
How it evolved, day by day
28 Aug
31 Aug
4 Sept
11 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
37°high
41km/h · peak gust
23%lowest humidity
It had gone more than two months without rain (1 mm or more) when it started. Rain came after the fire: 3.2 mm on 17 Sept.
This area had burned before
98% of the perimeter overlaps earlier fires recorded since 2016: 2,014 ha in 2016, 3,390 ha in 2017, 2,852 ha in 2018, 1,564 ha in 2019, 246 ha in 2021. Part of it burned more than once, so the yearly figures add up to more than the 3,219 ha that had burned before.
- 3,160 ha Altamira fire, July 2017 5,054 ha in total; the hectares shown are those it shares with this fire
- 2,014 ha Altamira fire, July 2016 4,069 ha in total; the hectares shown are those it shares with this fire
- 246 ha Altamira fire, August 2021 5,047 ha in total; the hectares shown are those it shares with this fire
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
Paris boundary: geoBoundaries · Institut national de l'information géographique et forestière (IGN-F) (Etalab Open License 2.0).
Madrid boundary: geoBoundaries · Open Data ESRI, IGN Central Registry of Cartography Area (CC BY 4.0).
Berlin boundary: geoBoundaries · Federal Agency for Cartography and Geodesy (dl-de/by-2-0).
This compares size, not location: both shapes are at the same scale, north up, centred on each other.
What happened to each town
-
3,304 ha reached on 28 Aug0.0 %
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 2020Built-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) |
|---|---|---|---|---|---|
| 23 Aug | 34.5 °C | 29 % | 31 km/h | 0.0 mm | High 37 |
| 24 Aug | 35.0 °C | 33 % | 30 km/h | 0.0 mm | High 36 |
| 25 Aug | 32.2 °C | 45 % | 31 km/h | 0.0 mm | High 28 |
| 26 Aug | 33.0 °C | 46 % | 36 km/h | 4.2 mm | Low 8 |
| 27 Aug | 33.9 °C | 38 % | 41 km/h | 0.0 mm | Moderate 21 |
| 28 Aug | 35.0 °C | 28 % | 33 km/h | 0.0 mm | High 32 |
| 29 Aug | 36.3 °C | 23 % | 29 km/h | 0.0 mm | High 36 |
| 30 Aug | 36.8 °C | 27 % | 27 km/h | 0.0 mm | High 35 |
| 31 Aug | 34.8 °C | 30 % | 25 km/h | 0.0 mm | High 34 |
| 1 Sept | 36.2 °C | 27 % | 36 km/h | 0.0 mm | Very high 39 |
| 2 Sept | 36.4 °C | 23 % | 38 km/h | 0.0 mm | Very high 40 |
| 3 Sept | 35.8 °C | 25 % | 41 km/h | 0.0 mm | Very high 42 |
| 4 Sept | 35.9 °C | 28 % | 35 km/h | 0.0 mm | Very high 40 |
| 5 Sept | 35.2 °C | 38 % | 36 km/h | 0.0 mm | High 33 |
| 6 Sept | 34.3 °C | 43 % | 35 km/h | 0.0 mm | High 30 |
| 7 Sept | 33.7 °C | 42 % | 34 km/h | 0.1 mm | High 30 |
| 8 Sept | 33.9 °C | 41 % | 39 km/h | 0.0 mm | High 30 |
| 9 Sept | 34.5 °C | 35 % | 34 km/h | 0.0 mm | High 31 |
| 10 Sept | 36.3 °C | 31 % | 35 km/h | 0.0 mm | High 34 |
| 11 Sept | 35.8 °C | 34 % | 22 km/h | 0.0 mm | High 32 |
| 12 Sept after | 34.6 °C | 44 % | 23 km/h | 0.1 mm | High 29 |
| 13 Sept after | 32.3 °C | 49 % | 29 km/h | 0.2 mm | High 26 |
| 14 Sept after | 34.7 °C | 39 % | 37 km/h | 0.2 mm | High 26 |
| 15 Sept after | 36.3 °C | 31 % | 27 km/h | 0.0 mm | High 32 |
| 16 Sept after | 33.3 °C | 46 % | 18 km/h | 0.0 mm | High 27 |
| 17 Sept after | 35.2 °C | 46 % | 28 km/h | 3.2 mm | Low 10 |
Its twins: fires that started in the same weather
It started with an FWI of 37.1, a minimum humidity of 28% and more than two months without rain. Fires in the area that started in weather like this since 2016: 31.
FWI at the start
37.1
Minimum humidity
28 %
Days without rain
60+
this fire
chosen twins
rest of the area
Almost identicalSimilar
Outlines of the closest twins
This fire · Altamira fire, 28 August 2022
3,283 ha
15 days
FWI 37.1
Min. humidity 28 %
Altamira fire, August 2024
3,306 ha
25 days
FWI 37.1
Min. humidity 28 %
145 km away, in 2024
First rain (1 mm or more) after it ended: 1.2 mm on 23 Sept.
Altamira fire, August 2017
3,351 ha
8 days
FWI 36.0
Min. humidity 27 %
26 km away, in 2017
First rain (1 mm or more) after it ended: none in the following ten days.
São Félix do Xingu fire, September 2020
3,355 ha
10 days
FWI 36.3
Min. humidity 29 %
128 km away, in 2020
First rain (1 mm or more) after it ended: none in the following ten days.
Altamira fire, August 2017
3,102 ha
13 days
FWI 37.0
Min. humidity 28 %
235 km away, in 2017
First rain (1 mm or more) after it ended: none in the following ten days.
São Félix do Xingu fire, September 2017
3,373 ha
12 days
FWI 36.4
Min. humidity 27 %
144 km away, in 2017
First rain (1 mm or more) after it ended: 1.6 mm on 21 Sept.
What happened to them
- 17 days
- median duration
- 3,789 ha
- median area
- 3 %
- went past 10,000 ha
- 1.6 mm
- rain at the end (median; 17 of 31 had it)
It burned an area similar to its twins (3,283 ha against a median of 3,789 ha) and lasted 15 days, against 17 days.
In 14 of 31, 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 1.6 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
3.2 mmfirst rain
17 Sept6 days after it ended
41km/h · max. gust
It was considered over on 11 Sept, and on 17 Sept 3.2 mm fell. We do not know whether the rain or the firefighters put it out. Twins with rain when they ended: 17 of 31, with a median of 1.6 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.
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
↔
Before · 21 Aug 2022
After · 18 Sept 2022
Sentinel-2 did not pass over on that day. Try another date, or use false colour, which is daily.
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 · CopernicusOn 3 September 2022 the air beside the fire reached 255 µg/m³ of PM2.5. That day averaged 164: 11 times the WHO daily guideline (15).
PM2.5 peak255 µg/m³
Days over the guideline19 days
PM10364 µg/m³
Optical depth2.43
WHO 15
26 Aug30 Aug3 Sept7 Sept11 Sept
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 · 206Every 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
- 18,387 haAltamira6 August 2021 · 8 days · 17 km away
- 10,945 haAltamira23 August 2024 · 32 days · 23 km away
- 15,787 haAltamira29 August 2024 · 27 days · 25 km away
- 11,387 haAltamira21 July 2020 · 34 days · 29 km away
- 38,130 haSão Félix do Xingu23 July 2020 · 36 days · 37 km away
- 17,088 haSão Félix do Xingu4 August 2021 · 17 days · 37 km away
Frequently asked questions
- How long did the Altamira fire last?
- GWIS (Copernicus) dates it between 28 August 2022 and 11 September 2022: 15 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 3,283 hectares (32.8 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Altamira (3,304 ha, 0.0 %).
- What was the weather like?
- During the fire the temperature reached 36.8 °C, humidity dropped to 23 % and gusts hit 41 km/h. The fire danger index (FWI) reached 42, class Very 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.
- 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: 31. Their median duration was 17 days and their median area 3,789 ha; 3 % went past 10,000 ha. In 14 of 31, 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 1.6 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: 193 · 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.
No changes since 24 October 2026.
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
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. 206 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.
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.