Fire near Bahia (BR)

11.22°S, 45.22°W · first detected on 27 September at 17:48

What the satellites measured

This fire was tracked from 27 September at 17:48 to 12 October at 19:02, that is 15 days, through 1,381 satellite detections. The detected extent reaches 14,100 ha.

Detected extent: 14,100 ha
Cumulative power: 23,375 MW
Peak power, one pixel: 594 MW
VIIRS and MODIS detections: 1,381
Estimated emissions: 24.1 kt of carbon; Carbon burnt in the 0.1 degree cells (about 10 km) around the fire, from 5 October 2026 to 12 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 18 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
12 October at 19:02	5 MW	1	N20
11 October at 19:22	538 MW	18	N20
11 October at 19:02	280 MW	14	N
11 October at 18:26	216 MW	9	N21
11 October at 06:46	9 MW	7	N20
11 October at 06:27	12 MW	7	N
10 October at 19:20	144 MW	19	N
10 October at 18:43	278 MW	19	N21
10 October at 17:58	514 MW	43	N20
10 October at 14:00	38 MW	1	Terra
10 October at 07:06	7 MW	5	N20
10 October at 06:46	23 MW	11	N
10 October at 06:10	48 MW	24	N21
10 October at 01:35	29 MW	3	Terra
9 October at 21:13	374 MW	7	Aqua
9 October at 19:39	475 MW	33	N
9 October at 19:02	1,093 MW	48	N21
9 October at 18:18	1,723 MW	61	N20
9 October at 18:01	863 MW	42	N
9 October at 13:21	174 MW	9	Terra
9 October at 08:59	39 MW	2	Aqua
9 October at 07:04	96 MW	32	N
9 October at 06:27	233 MW	53	N21
9 October at 05:45	80 MW	33	N20
8 October at 20:34	684 MW	13	Aqua
8 October at 19:22	590 MW	39	N21
8 October at 18:37	1,361 MW	58	N20
8 October at 18:18	876 MW	36	N
8 October at 17:41	707 MW	30	N21
8 October at 06:46	33 MW	15	N21
8 October at 06:02	17 MW	10	N20
8 October at 05:45	5 MW	2	N
8 October at 01:54	15 MW	2	Terra
7 October at 18:56	327 MW	22	N20
7 October at 18:35	1,041 MW	42	N
7 October at 18:01	599 MW	19	N21
7 October at 13:42	17 MW	2	Terra
7 October at 07:06	14 MW	4	N21
7 October at 06:21	22 MW	11	N20
7 October at 06:02	19 MW	9	N
6 October at 20:58	285 MW	4	Aqua
6 October at 19:15	29 MW	4	N20
6 October at 18:56	56 MW	6	N
6 October at 18:20	161 MW	7	N21
6 October at 06:40	11 MW	8	N20
6 October at 06:19	8 MW	5	N
6 October at 05:45	4 MW	2	N21
5 October at 19:13	53 MW	3	N
5 October at 18:37	87 MW	9	N21
5 October at 17:54	23 MW	3	N20
5 October at 06:40	5 MW	3	N
2 October at 13:45	87 MW	3	Terra
2 October at 06:59	31 MW	14	N21
2 October at 06:17	52 MW	28	N20
2 October at 05:55	20 MW	14	N
1 October at 19:07	436 MW	26	N20
1 October at 18:50	1,559 MW	54	N
1 October at 18:11	1,383 MW	52	N21
1 October at 13:04	312 MW	6	Terra
1 October at 08:48	45 MW	4	Aqua
1 October at 06:34	136 MW	47	N20
1 October at 06:14	111 MW	41	N
1 October at 05:38	105 MW	39	N21
1 October at 02:18	88 MW	3	Terra
30 September at 19:28	575 MW	24	N20
30 September at 19:07	287 MW	15	N
30 September at 18:33	1,598 MW	24	N21
30 September at 17:48	11 MW	1	N20
30 September at 14:04	137 MW	5	Terra
30 September at 08:12	18 MW	1	Aqua
30 September at 06:53	10 MW	5	N20
30 September at 06:34	17 MW	8	N
30 September at 05:55	21 MW	8	N21
29 September at 19:26	116 MW	8	N
29 September at 18:50	114 MW	5	N21
29 September at 18:05	37 MW	3	N20
29 September at 13:23	51 MW	3	Terra
29 September at 07:12	25 MW	8	N20
29 September at 06:51	14 MW	7	N
29 September at 06:17	25 MW	11	N21
29 September at 05:32	37 MW	8	N20
28 September at 20:47	67 MW	3	Aqua
28 September at 19:09	19 MW	3	N21
28 September at 18:26	20 MW	3	N20
28 September at 18:05	47 MW	6	N
28 September at 07:10	2 MW	1	N
28 September at 06:34	5 MW	3	N21
28 September at 05:49	1 MW	2	N20
28 September at 01:58	17 MW	2	Terra
27 September at 20:09	1,179 MW	3	Aqua
27 September at 19:28	47 MW	2	N21
27 September at 18:43	88 MW	4	N20
27 September at 18:24	75 MW	3	N
27 September at 17:48	14 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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