Fire near Australie-Occidentale (AU)

15.62°S, 125.40°E · first detected on 21 October at 10:27

What the satellites measured

This fire was tracked from 21 October at 10:27 to 22 October at 19:54, through 56 satellite detections. The detected extent reaches 1,019 ha.

Detected extent: 1,019 ha
Cumulative power: 327 MW
Peak power, one pixel: 34 MW
VIIRS and MODIS detections: 56

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 4 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 07:07	100 MW	2	Him9
23 October at 06:57	40 MW	1	Him9
23 October at 06:47	36 MW	1	Him9
23 October at 06:37	49 MW	1	Him9
23 October at 06:27	65 MW	1	Him9
23 October at 06:17	100 MW	2	Him9
23 October at 06:07	94 MW	2	Him9
23 October at 05:57	101 MW	2	Him9
23 October at 05:47	101 MW	2	Him9
23 October at 05:37	129 MW	2	Him9
23 October at 05:27	113 MW	2	Him9
23 October at 05:17	118 MW	2	Him9
23 October at 05:07	119 MW	2	Him9
23 October at 04:57	114 MW	2	Him9
23 October at 04:37	68 MW	2	Him9
23 October at 04:27	87 MW	2	Him9
23 October at 04:17	86 MW	2	Him9
23 October at 04:07	89 MW	2	Him9
23 October at 03:57	92 MW	2	Him9
23 October at 03:47	86 MW	2	Him9
23 October at 03:37	71 MW	2	Him9
23 October at 03:27	32 MW	1	Him9
23 October at 03:17	31 MW	1	Him9
22 October at 20:07	27 MW	1	Him9
22 October at 19:54	10 MW	7	N
22 October at 19:15	26 MW	10	N21
22 October at 18:35	19 MW	9	N20
22 October at 18:13	4 MW	3	N
22 October at 15:47	20 MW	1	Him9
22 October at 15:37	19 MW	1	Him9
22 October at 15:27	20 MW	1	Him9
22 October at 15:07	27 MW	1	Him9
22 October at 14:57	23 MW	1	Him9
22 October at 14:47	25 MW	1	Him9
22 October at 14:37	25 MW	1	Him9
22 October at 14:27	26 MW	1	Him9
22 October at 14:19	43 MW	5	Terra
22 October at 14:07	25 MW	1	Him9
22 October at 13:57	56 MW	2	Him9
22 October at 13:47	27 MW	1	Him9
22 October at 13:37	30 MW	1	Him9
22 October at 13:27	45 MW	2	Him9
22 October at 13:17	18 MW	1	Him9
22 October at 13:07	26 MW	1	Him9
22 October at 12:57	27 MW	1	Him9
22 October at 12:27	33 MW	1	Him9
22 October at 12:07	20 MW	1	Him9
22 October at 11:57	27 MW	1	Him9
22 October at 11:47	28 MW	1	Him9
22 October at 11:27	23 MW	1	Him9
22 October at 11:17	57 MW	2	Him9
22 October at 11:07	55 MW	2	Him9
22 October at 10:57	71 MW	3	Him9
22 October at 10:47	58 MW	2	Him9
22 October at 10:37	70 MW	2	Him9
22 October at 10:27	49 MW	1	Him9
22 October at 09:41	140 MW	6	Aqua
22 October at 06:27	30 MW	3	N21
22 October at 05:37	196 MW	4	Him9
22 October at 05:27	283 MW	4	Him9
22 October at 05:17	160 MW	3	Him9
22 October at 05:07	164 MW	3	Him9
22 October at 04:57	122 MW	3	Him9
21 October at 20:57	64 MW	1	Him9
21 October at 20:37	50 MW	1	Him9
21 October at 18:52	43 MW	7	N20
21 October at 18:33	14 MW	6	N
21 October at 15:37	27 MW	1	Him9
21 October at 12:07	30 MW	1	Him9
21 October at 11:57	57 MW	2	Him9
21 October at 11:47	81 MW	3	Him9
21 October at 10:27	30 MW	1	Him9

8 other fires near Australie-Occidentale (AU)

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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