Fire near Bahia (BR)

12.21°S, 44.72°W · first detected on 1 October at 18:11

What the satellites measured

This fire was tracked from 1 October at 18:11 to 14 October at 18:24, that is 13 days, through 1,557 satellite detections. The detected extent reaches 18,696 ha.

Detected extent: 18,696 ha
Cumulative power: 68,169 MW
Peak power, one pixel: 851 MW
VIIRS and MODIS detections: 1,557
Estimated emissions: 57.6 kt of carbon; Carbon burnt in the 0.1 degree cells (about 10 km) around the fire, from 5 October 2026 to 14 October 2026. An order-of-magnitude estimate from GFAS (ECMWF, Copernicus CAMS): it also counts neighbouring fires in the same cell. Contains modified Copernicus Atmosphere Monitoring Service information (2026).

These four figures cover the polar orbits alone, the ones that measure an area. The pass table below also counts geostationary detections, more frequent but too coarse for geometry, and its power column sums a whole pass where the peak above is that of a single pixel.

“Detected extent” is not “burned area”: it is the union of the ground footprints of the satellite pixels, and a pixel counts in full (375 m for VIIRS, 1 km for MODIS) even when only a forest edge is burning. Compared with press figures it is in practice one and a half to three times the area reported. Detections taken at the edge of the scan swath, too coarse to measure anything at all, are excluded. These figures come from thermal detection and are not an official assessment: only the emergency services and the competent authorities are authoritative.

Replay how the fire spread

The map is framed on this fire's footprint and loads only its detections. The timeline below covers the period in which satellites saw it, from the first to the last detection, with twelve hours before and twenty-four after; the ticks on the bar mark the emergency services' announcements that fall within it. The cursor opens on the most powerful pass, and playback replays the whole fire in about thirty seconds. “1 h” shows what is burning within an hour of the chosen moment : the map then follows the power curve below and empties when it falls. “24 h” stacks twenty-four hours : a fire stays visible between two satellite passes, which come two to four times a day. Both are true, but they say different things.

How the radiative power evolved

One point per satellite pass: the sum of the fire radiative power measured over the fire. This is the curve that says whether the fire eased off or picked up again, which no cumulative figure shows. The window covers 16 days; beyond that, clustering would merge two successive fires in the same place.

Fire dynamics

Loading history…

Satellite passes in detail

Pass	Power summed over the pass	Detections	Sensor
14 October at 18:24	19 MW	1	N20
14 October at 18:05	12 MW	1	N
13 October at 18:43	75 MW	2	N20
13 October at 18:24	48 MW	1	N
13 October at 17:46	3 MW	1	N21
13 October at 01:54	22 MW	3	Terra
12 October at 19:02	933 MW	38	N20
12 October at 18:05	2,365 MW	34	N21
12 October at 13:40	49 MW	3	Terra
12 October at 06:27	70 MW	13	N20
12 October at 06:08	7 MW	2	N
11 October at 19:22	101 MW	12	N20
11 October at 19:02	112 MW	11	N
11 October at 18:24	339 MW	16	N21
11 October at 06:49	5 MW	6	N20
11 October at 06:27	9 MW	9	N
11 October at 05:49	15 MW	6	N21
10 October at 19:20	794 MW	68	N
10 October at 18:43	2,323 MW	68	N21
10 October at 18:01	1,232 MW	59	N20
10 October at 14:00	435 MW	3	Terra
10 October at 07:06	21 MW	7	N20
10 October at 06:46	20 MW	9	N
10 October at 06:10	33 MW	18	N21
10 October at 05:25	12 MW	3	N20
10 October at 01:33	43 MW	5	Terra
9 October at 21:13	829 MW	15	Aqua
9 October at 19:39	2,129 MW	73	N
9 October at 19:02	6,781 MW	105	N21
9 October at 18:18	2,306 MW	74	N20
9 October at 17:58	3,213 MW	89	N
9 October at 13:21	19 MW	2	Terra
9 October at 07:06	4 MW	2	N
9 October at 06:27	21 MW	12	N21
9 October at 05:45	4 MW	3	N20
8 October at 20:34	1,259 MW	21	Aqua
8 October at 19:22	5,582 MW	74	N21
8 October at 18:37	2,203 MW	72	N20
8 October at 18:18	2,632 MW	67	N
8 October at 17:39	3,504 MW	54	N21
8 October at 08:22	8 MW	1	Aqua
8 October at 06:49	9 MW	3	N21
8 October at 06:04	35 MW	15	N20
8 October at 05:45	8 MW	5	N
8 October at 01:54	25 MW	3	Terra
7 October at 18:56	6,336 MW	64	N20
7 October at 18:35	5,972 MW	132	N
7 October at 18:01	9,222 MW	74	N21
7 October at 13:42	45 MW	2	Terra
7 October at 07:06	20 MW	7	N21
7 October at 06:21	46 MW	26	N20
7 October at 06:02	43 MW	18	N
7 October at 05:25	61 MW	19	N21
7 October at 01:16	952 MW	6	Terra
6 October at 20:56	1,187 MW	5	Aqua
6 October at 19:13	962 MW	17	N20
6 October at 18:56	1,183 MW	34	N
6 October at 18:18	276 MW	20	N21
6 October at 06:40	1 MW	1	N20
6 October at 06:21	3 MW	3	N
6 October at 05:45	8 MW	2	N21
5 October at 18:37	16 MW	2	N21
2 October at 18:50	825 MW	9	N20
2 October at 17:54	180 MW	5	N21
2 October at 06:17	2 MW	2	N20
1 October at 21:02	460 MW	3	Aqua
1 October at 19:07	431 MW	8	N20
1 October at 18:50	126 MW	5	N
1 October at 18:11	149 MW	4	N21
29 September at 19:26	5 MW	1	N
29 September at 18:50	51 MW	2	N21

8 other fires near Bahia (BR)

Separate fires, apart in time or in space, not pieces of this one. A single municipality can have several over one summer, and a forest massif often covers more than a hundred square kilometres.

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