Fire near Niassa (MZ)

13.98°S, 37.76°E · first detected on 6 September at 10:53

What the satellites measured

This fire was tracked from 6 September at 10:53 to 6 September at 15:01, through 60 satellite detections. The detected extent reaches 1,287 ha.

Detected extent: 1,287 ha
Cumulative power: 541 MW
Peak power, one pixel: 67 MW
VIIRS and MODIS detections: 60

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 375 m pixel counts in full 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 and loads only its detections. The timeline below covers the whole known life of the fire, from the first trace, satellite or report, to the last announcement from emergency services, and the ticks on the bar mark those announcements. Detections often stop before containment: a fire stops radiating once it stops spreading, which is exactly when it is declared contained. “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. “12 h” stacks twelve hours , as the home map does, where stacking avoids an empty screen between two satellite passes. 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 3 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
7 September at 14:53	69 MW	4	Met12
7 September at 14:43	17 MW	1	Met12
7 September at 14:33	31 MW	2	Met12
7 September at 14:23	73 MW	5	Met12
7 September at 14:19	48 MW	1	Met9
7 September at 14:04	60 MW	1	Met9
7 September at 14:03	97 MW	4	Met12
7 September at 13:57	195 MW	16	N21
7 September at 13:34	102 MW	2	Met9
7 September at 13:19	90 MW	2	Met9
7 September at 13:10	353 MW	44	N20
7 September at 12:53	190 MW	33	N
7 September at 12:49	80 MW	1	Met9
7 September at 12:15	288 MW	21	N21
7 September at 12:04	57 MW	1	Met9
7 September at 12:03	67 MW	4	Met12
7 September at 11:34	94 MW	2	Met9
7 September at 11:19	38 MW	1	Met10
7 September at 00:20	1 MW	1	N
6 September at 17:23	12 MW	1	Met12
6 September at 16:53	12 MW	1	Met12
6 September at 16:49	33 MW	2	Met9
6 September at 16:43	14 MW	1	Met12
6 September at 16:34	78 MW	2	Met10
6 September at 16:34	65 MW	2	Met9
6 September at 16:33	74 MW	3	Met12
6 September at 16:23	95 MW	5	Met12
6 September at 16:19	131 MW	4	Met9
6 September at 16:19	119 MW	3	Met10
6 September at 16:13	159 MW	6	Met12
6 September at 16:04	79 MW	2	Met9
6 September at 16:04	82 MW	2	Met10
6 September at 16:03	99 MW	5	Met12
6 September at 15:53	76 MW	4	Met12
6 September at 15:49	218 MW	7	Met9
6 September at 15:49	159 MW	4	Met10
6 September at 15:43	52 MW	3	Met12
6 September at 15:34	188 MW	4	Met10
6 September at 15:34	139 MW	3	Met9
6 September at 15:33	137 MW	3	Met12
6 September at 15:23	34 MW	2	Met12
6 September at 15:19	83 MW	3	Met9
6 September at 15:13	65 MW	4	Met12
6 September at 15:04	200 MW	4	Met9
6 September at 15:04	189 MW	3	Met10
6 September at 15:03	96 MW	5	Met12
6 September at 15:01	240 MW	13	Aqua
6 September at 14:53	200 MW	7	Met12
6 September at 14:49	315 MW	7	Met9
6 September at 14:49	200 MW	2	Met10
6 September at 14:43	185 MW	7	Met12
6 September at 14:34	248 MW	6	Met9
6 September at 14:33	212 MW	7	Met12
6 September at 14:23	17 MW	1	Met12
6 September at 14:19	181 MW	4	Met9
6 September at 14:13	76 MW	4	Met12
6 September at 14:04	118 MW	3	Met9
6 September at 14:03	98 MW	6	Met12
6 September at 13:53	131 MW	6	Met12
6 September at 13:49	223 MW	2	Met10
6 September at 13:49	440 MW	6	Met9
6 September at 13:43	277 MW	9	Met12
6 September at 13:34	174 MW	2	Met10
6 September at 13:34	482 MW	7	Met9
6 September at 13:33	260 MW	9	Met12
6 September at 13:32	471 MW	45	N20
6 September at 13:23	332 MW	7	Met12
6 September at 13:19	455 MW	9	Met9
6 September at 13:19	119 MW	1	Met10
6 September at 13:13	247 MW	8	Met12
6 September at 13:13	642 MW	51	N
6 September at 13:04	186 MW	4	Met9
6 September at 13:03	232 MW	9	Met12
6 September at 12:53	181 MW	7	Met12
6 September at 12:49	158 MW	3	Met9
6 September at 12:43	193 MW	8	Met12
6 September at 12:36	329 MW	40	N21
6 September at 12:33	92 MW	4	Met12
6 September at 12:23	136 MW	5	Met12
6 September at 12:19	108 MW	2	Met9
6 September at 12:13	35 MW	2	Met12
6 September at 12:04	47 MW	1	Met9
6 September at 11:53	184 MW	5	Met12
6 September at 11:49	204 MW	3	Met9
6 September at 11:49	73 MW	1	Met10
6 September at 11:43	108 MW	4	Met12
6 September at 11:34	312 MW	3	Met10
6 September at 11:34	459 MW	4	Met9
6 September at 11:33	148 MW	3	Met12
6 September at 11:23	147 MW	3	Met12
6 September at 11:19	71 MW	1	Met10
6 September at 11:19	234 MW	4	Met9
6 September at 11:13	93 MW	3	Met12
6 September at 11:04	232 MW	3	Met10
6 September at 11:04	45 MW	1	Met9
6 September at 11:03	68 MW	2	Met12
6 September at 10:53	38 MW	2	Met12

8 other fires near Niassa (MZ)

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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