Fire near Atsimo-Andrefana (MG)

22.17°S, 44.97°E · first detected on 15 October at 15:06

What the satellites measured

This fire was tracked from 15 October at 15:06 to 22 October at 13:49, that is 7 days, through 152 satellite detections. The detected extent reaches 1,551 ha.

Detected extent: 1,551 ha
Cumulative power: 1,507 MW
Peak power, one pixel: 58 MW
VIIRS and MODIS detections: 152
Estimated emissions: 3.0 kt of carbon; Carbon burnt in the 0.1 degree cells (about 10 km) around the fire, from 15 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 9 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
23 October at 00:25	1 MW	1	N21
22 October at 23:40	1 MW	1	N20
22 October at 16:04	21 MW	1	Met9
22 October at 15:49	28 MW	1	Met9
22 October at 15:34	31 MW	1	Met9
22 October at 15:32	13 MW	1	Met12
22 October at 15:22	27 MW	2	Met12
22 October at 15:19	47 MW	1	Met9
22 October at 15:12	38 MW	2	Met12
22 October at 15:03	54 MW	1	Met9
22 October at 15:02	23 MW	1	Met12
22 October at 14:52	53 MW	2	Met12
22 October at 14:48	68 MW	1	Met9
22 October at 14:42	57 MW	2	Met12
22 October at 14:33	84 MW	3	Met9
22 October at 14:32	110 MW	3	Met12
22 October at 14:22	180 MW	4	Met12
22 October at 14:18	272 MW	4	Met9
22 October at 14:12	103 MW	2	Met12
22 October at 14:03	288 MW	3	Met9
22 October at 14:02	172 MW	4	Met12
22 October at 13:52	48 MW	2	Met12
22 October at 13:49	34 MW	3	N
22 October at 13:48	88 MW	2	Met9
22 October at 13:33	40 MW	1	Met9
22 October at 13:18	42 MW	1	Met9
22 October at 13:10	105 MW	9	N21
22 October at 12:26	23 MW	3	N20
22 October at 12:09	4 MW	1	N
21 October at 13:30	34 MW	3	N21
21 October at 13:02	18 MW	1	Met12
21 October at 12:45	52 MW	6	N20
21 October at 12:26	31 MW	5	N
21 October at 12:22	21 MW	1	Met12
21 October at 00:16	1 MW	2	N20
20 October at 15:42	11 MW	1	Met12
20 October at 15:22	22 MW	2	Met12
20 October at 15:02	35 MW	2	Met12
20 October at 14:18	70 MW	1	Met9
20 October at 14:12	26 MW	1	Met12
20 October at 14:02	59 MW	2	Met12
20 October at 13:52	57 MW	2	Met12
20 October at 13:42	36 MW	1	Met12
20 October at 13:32	30 MW	1	Met12
20 October at 13:22	58 MW	1	Met12
20 October at 13:12	98 MW	2	Met12
20 October at 13:04	253 MW	11	N20
20 October at 12:52	97 MW	2	Met12
20 October at 12:43	139 MW	13	N
19 October at 13:23	176 MW	33	N20
19 October at 13:04	158 MW	13	N
19 October at 12:26	138 MW	10	N21
19 October at 00:33	1 MW	1	N
18 October at 23:57	2 MW	2	N21
18 October at 15:23	30 MW	2	Aqua
18 October at 13:21	71 MW	9	N
18 October at 12:45	33 MW	2	N21
18 October at 12:02	193 MW	19	N20
17 October at 13:04	7 MW	1	N21
17 October at 12:19	6 MW	1	N20
17 October at 12:00	6 MW	1	N
16 October at 13:23	17 MW	2	N21
15 October at 15:06	7 MW	1	Aqua

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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