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Fire near Formosa da Serra Negra, Brazil, 10 October 2026

-6.6873, -45.8857  ·  Maranhão  ·  first seen 2026-10-10 16:45 UTC  ·  Português

398 MWradiative power
14detections
13:41local solar, first detection
3.4 kmacross
Fire near Formosa da Serra Negra, Brazil, 10 October 2026

What the satellites saw

5 km14 pixels · 375 m each

Every pixel VIIRS returned inside 7 km of this fire: 10 in daylight, 4 on the night pass. A pixel is 375 m, so the squares are drawn at the size the measurement has.

Where

100 km300 kmFormosa da Serra Negra200 km

Coastline and borders from Natural Earth at 110 m — regional context, not a survey. Each layer above is its own address, so a view can be shared.

A fire was first detected here at 16:45 UTC on 10 October 2026, 43 km SE of Formosa da Serra Negra in Maranhão, Brazil. At its most recent pass it was putting out 398 megawatts of radiative power across 14 separate satellite detections.

The detections span about 3.4 km of ground.

No settlement in our index has population recorded within 25 km.

When the satellite first saw it

In local solar time the first detection falls at 13:41, which is the early afternoon. VIIRS passes about 01:30 and 13:30 local solar, so this is when the satellite looked: the fire began somewhere in the twelve hours before.

It was seen across 12.0 hours of satellite passes.

29% of the detections came from the night pass.

What this ground has done before

This ground has burned before. Our archive records fire here in 2012, 2013, 2014, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2024, 2025, 2026, across 41 days, most recently on 2026-09-13.

Wind and weather

At the fire, wind was 7 km/h from the E, carrying smoke and embers towards the W. Temperature 33°C, relative humidity 43%.

Twelve hours on, the forecast has wind at 10 km/h from the NNE. These are model figures at roughly 10 km resolution, not a reading taken at the fire.

Where analysis would go

Our screening pass scores this fire 0.70. The score ranks where analysis is worth spending.

What the screen noticed: 13 distinct events in one space-time group; activity compressed 14x versus a week-long release; events spread over 23 km - too far apart to be one fire, close enough to share an actor.

Read from satellite detections and weather. No roads, no land cover, no ground visit.

What else this page knows

Each of these is attached to every fire, including this one.

Lightning, and whether anyone was looking
Lightning, and whether anyone was lookingA flash within 25 km in the day before a fire was first seen, and a coverage flag, so no flash never quietly means no instrument.
Has this ground burned before
Has this ground burned beforeEvery fire is checked against an archive back to 2012, which answers with the years this same ground burned.
A map inside every email
A map inside every emailThe picture is drawn and attached to the message rather than loaded from a server, so it shows up even with remote images turned off.

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30 km around Formosa da Serra Negra

A detection is a heat signature at 375 m, about three hours behind the satellite. Cloud, smoke and canopy hide fires; each satellite passes twice a day. Not for evacuation or life-safety decisions — follow your local fire service.

Written from our own measurements; composed. Open this fire on the live map.

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