Fire near Atsimo-Andrefana (MG)

22.51°S, 44.28°E · first detected on 10 October at 11:56

What the satellites measured

This fire was tracked from 10 October at 11:56 to 22 October at 13:49, that is 12 days, through 788 satellite detections. The detected extent reaches 5,962 ha.

Detected extent: 5,962 ha
Cumulative power: 20,155 MW
Peak power, one pixel: 298 MW
VIIRS and MODIS detections: 788
Estimated emissions: 52.0 kt of carbon; Carbon burnt in the 0.1 degree cells (about 10 km) around the fire, from 10 October 2026 to 21 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). Published data stop on 21 October 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 15 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
22 October at 15:02	17 MW	1	Met12
22 October at 14:18	50 MW	2	Met9
22 October at 14:12	17 MW	1	Met12
22 October at 13:49	67 MW	8	N
22 October at 13:48	35 MW	1	Met9
22 October at 13:18	64 MW	1	Met9
22 October at 13:10	403 MW	30	N21
22 October at 13:03	127 MW	2	Met9
22 October at 12:52	27 MW	1	Met12
22 October at 12:26	185 MW	11	N20
22 October at 12:09	70 MW	10	N
21 October at 13:33	43 MW	1	Met9
21 October at 13:30	47 MW	10	N21
21 October at 13:18	71 MW	1	Met9
21 October at 13:03	130 MW	2	Met9
21 October at 12:48	45 MW	1	Met9
21 October at 12:45	228 MW	22	N20
21 October at 12:26	139 MW	14	N
21 October at 11:49	18 MW	1	N21
20 October at 16:04	98 MW	3	Met9
20 October at 16:02	11 MW	1	Met12
20 October at 15:52	16 MW	1	Met12
20 October at 15:49	145 MW	4	Met9
20 October at 15:42	12 MW	1	Met12
20 October at 14:22	43 MW	2	Met12
20 October at 14:02	50 MW	1	Met12
20 October at 13:52	47 MW	1	Met12
20 October at 13:42	46 MW	1	Met12
20 October at 13:32	184 MW	3	Met12
20 October at 13:22	206 MW	5	Met12
20 October at 13:12	202 MW	5	Met12
20 October at 13:04	521 MW	36	N20
20 October at 13:02	222 MW	5	Met12
20 October at 12:52	118 MW	3	Met12
20 October at 12:43	256 MW	15	N
20 October at 12:32	39 MW	1	Met12
20 October at 12:22	64 MW	1	Met12
20 October at 11:52	127 MW	2	Met12
20 October at 11:42	198 MW	3	Met12
20 October at 11:32	944 MW	8	Met12
20 October at 11:22	1,623 MW	11	Met12
20 October at 11:12	1,591 MW	11	Met12
20 October at 11:02	1,238 MW	9	Met12
20 October at 10:52	228 MW	3	Met12
19 October at 13:23	313 MW	20	N20
19 October at 13:04	279 MW	17	N
19 October at 12:26	216 MW	12	N21
19 October at 00:57	1 MW	2	N20
19 October at 00:35	2 MW	2	N
18 October at 23:57	3 MW	1	N21
18 October at 19:54	5 MW	1	Terra
18 October at 13:21	355 MW	11	N
18 October at 12:45	17 MW	3	N21
18 October at 12:02	96 MW	7	N20
18 October at 00:16	3 MW	3	N21
17 October at 13:42	82 MW	10	N
17 October at 13:04	255 MW	11	N21
17 October at 12:19	151 MW	9	N20
17 October at 12:00	67 MW	4	N
16 October at 13:23	98 MW	17	N21
16 October at 12:41	134 MW	7	N20
16 October at 12:19	60 MW	14	N
16 October at 00:10	6 MW	7	N20
15 October at 15:04	250 MW	9	Aqua
15 October at 13:42	76 MW	6	N21
15 October at 12:58	819 MW	25	N20
15 October at 12:38	429 MW	10	N
15 October at 12:02	933 MW	43	N21
15 October at 00:29	32 MW	33	N20
15 October at 00:10	38 MW	30	N
14 October at 23:33	20 MW	14	N21
14 October at 14:29	1,532 MW	12	Aqua
14 October at 13:17	1,949 MW	58	N20
14 October at 12:58	4,353 MW	65	N
14 October at 12:19	3,342 MW	52	N21
14 October at 00:48	5 MW	4	N20
14 October at 00:29	13 MW	12	N
13 October at 23:53	12 MW	9	N21
13 October at 19:54	25 MW	3	Terra
13 October at 15:27	138 MW	4	Aqua
13 October at 13:36	436 MW	26	N20
13 October at 11:56	281 MW	18	N20
12 October at 14:49	621 MW	13	Aqua
12 October at 12:58	664 MW	19	N21
12 October at 00:31	1 MW	1	N21
11 October at 23:46	2 MW	2	N20
11 October at 13:53	28 MW	2	N
11 October at 13:15	9 MW	1	N21
11 October at 12:34	63 MW	2	N20
11 October at 12:13	4 MW	1	N
10 October at 12:51	26 MW	4	N20
10 October at 12:32	17 MW	2	N
10 October at 11:56	8 MW	2	N21

8 other fires near Atsimo-Andrefana (MG)

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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