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Aursee · notable fire

Fire near Alvorada do Gurguéia, Piauí, Brazil, September 2026

Detected · VIIRS 375 m (S-NPP, NOAA-20, NOAA-21) · -8.350, -44.166 · first seen 26 September 2026, 16:07 UTC

15,571 MWpeak summed radiative power, 26 Sep
313detections on that day
8 kmwidest extent of the group
2days in the record

First detected 26 September 2026, 16:07 UTC, 35 km WNW of Alvorada do Gurguéia. Last detected 27 September 2026, 16:43 UTC.

Day by day

2026-09-26: 15,571 MW26 Sep2026-09-27: 10,688 MW27 Sep15,571 MW

Summed radiative power per UTC day, MW.

Day (UTC)MWDetectionsExtent kmNight
2026-09-2615,571313772%
2026-09-2710,688303874%

MW is fire radiative power summed over every detection grouped into the fire in a 24-hour window, across three satellites. Extent is the width of the group of detections, not a mapped perimeter. Night is the share of detections from the night pass. How these are measured.

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