Fire near Australie-Occidentale (AU)

18.47°S, 123.49°E · first detected on 21 October at 14:17

What the satellites measured

This fire was tracked from 21 October at 14:17 to 23 October at 02:48, that is 2 days, through 249 satellite detections. The detected extent reaches 5,891 ha.

Detected extent: 5,891 ha
Cumulative power: 7,884 MW
Peak power, one pixel: 1,621 MW
VIIRS and MODIS detections: 249

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 06:17	814 MW	7	Him9
23 October at 06:07	1,615 MW	10	Him9
23 October at 05:57	1,427 MW	7	Him9
23 October at 05:47	1,010 MW	8	Him9
23 October at 05:37	506 MW	8	Him9
23 October at 05:27	232 MW	4	Him9
23 October at 05:17	402 MW	6	Him9
23 October at 05:07	270 MW	4	Him9
23 October at 04:57	258 MW	3	Him9
23 October at 04:37	633 MW	5	Him9
23 October at 04:27	91 MW	1	Him9
23 October at 04:17	403 MW	4	Him9
23 October at 04:07	162 MW	2	Him9
23 October at 03:57	274 MW	2	Him9
23 October at 03:47	436 MW	4	Him9
23 October at 03:37	172 MW	3	Him9
23 October at 03:27	199 MW	4	Him9
23 October at 03:17	87 MW	2	Him9
23 October at 03:07	36 MW	1	Him9
23 October at 02:57	49 MW	1	Him9
23 October at 02:48	498 MW	6	Terra
23 October at 02:37	125 MW	2	Him9
23 October at 02:27	216 MW	3	Him9
23 October at 02:17	87 MW	1	Him9
23 October at 02:07	92 MW	2	Him9
23 October at 01:27	22 MW	1	Him9
23 October at 01:17	39 MW	1	Him9
23 October at 01:07	67 MW	2	Him9
23 October at 00:47	19 MW	1	Him9
23 October at 00:27	61 MW	2	Him9
22 October at 22:57	22 MW	1	Him9
22 October at 22:27	21 MW	1	Him9
22 October at 22:17	49 MW	1	Him9
22 October at 22:07	52 MW	2	Him9
22 October at 21:57	84 MW	2	Him9
22 October at 21:47	413 MW	6	Him9
22 October at 21:37	1,154 MW	8	Him9
22 October at 21:27	435 MW	4	Him9
22 October at 21:17	541 MW	3	Him9
22 October at 21:07	21 MW	1	Him9
22 October at 20:47	39 MW	1	Him9
22 October at 20:27	18 MW	1	Him9
22 October at 19:54	65 MW	41	N
22 October at 19:47	17 MW	1	Him9
22 October at 19:37	16 MW	1	Him9
22 October at 19:27	20 MW	1	Him9
22 October at 19:17	49 MW	2	Him9
22 October at 19:17	125 MW	41	N21
22 October at 19:07	97 MW	3	Him9
22 October at 18:57	177 MW	5	Him9
22 October at 18:47	228 MW	4	Him9
22 October at 18:37	43 MW	2	Him9
22 October at 18:35	161 MW	51	N20
22 October at 18:27	133 MW	3	Him9
22 October at 18:17	101 MW	3	Him9
22 October at 18:13	206 MW	40	N
22 October at 18:07	369 MW	5	Him9
22 October at 17:57	267 MW	3	Him9
22 October at 17:47	594 MW	6	Him9
22 October at 17:37	341 MW	7	Him9
22 October at 17:27	181 MW	4	Him9
22 October at 17:17	78 MW	2	Him9
22 October at 17:07	78 MW	1	Him9
22 October at 16:57	138 MW	3	Him9
22 October at 16:37	99 MW	3	Him9
22 October at 16:27	122 MW	3	Him9
22 October at 16:07	496 MW	8	Him9
22 October at 15:57	661 MW	5	Him9
22 October at 15:47	509 MW	6	Him9
22 October at 15:37	1,178 MW	7	Him9
22 October at 15:27	1,020 MW	8	Him9
22 October at 15:17	1,393 MW	6	Him9
22 October at 15:07	277 MW	4	Him9
22 October at 14:57	1,212 MW	6	Him9
22 October at 14:47	1,573 MW	6	Him9
22 October at 14:37	2,654 MW	7	Him9
22 October at 14:27	2,028 MW	5	Him9
22 October at 14:19	3,520 MW	24	Terra
22 October at 14:17	2,167 MW	8	Him9
22 October at 14:07	242 MW	5	Him9
22 October at 13:57	1,854 MW	7	Him9
22 October at 13:47	1,362 MW	4	Him9
22 October at 13:37	3,191 MW	8	Him9
22 October at 13:27	1,203 MW	6	Him9
22 October at 13:17	333 MW	4	Him9
22 October at 13:07	26 MW	1	Him9
22 October at 12:57	131 MW	3	Him9
22 October at 12:47	93 MW	1	Him9
22 October at 12:37	261 MW	4	Him9
22 October at 12:27	40 MW	1	Him9
22 October at 12:07	169 MW	3	Him9
22 October at 11:57	204 MW	3	Him9
22 October at 11:47	329 MW	6	Him9
22 October at 11:37	252 MW	3	Him9
22 October at 11:27	524 MW	6	Him9
22 October at 11:17	591 MW	6	Him9
22 October at 11:07	180 MW	3	Him9
22 October at 10:57	275 MW	3	Him9
22 October at 10:47	551 MW	5	Him9
22 October at 10:37	1,411 MW	7	Him9
22 October at 10:27	782 MW	3	Him9
22 October at 10:17	2,064 MW	7	Him9
22 October at 10:07	3,864 MW	8	Him9
22 October at 09:57	1,772 MW	7	Him9
22 October at 09:47	2,617 MW	7	Him9
22 October at 09:41	3,077 MW	19	Aqua
22 October at 09:37	2,475 MW	8	Him9
22 October at 09:27	1,741 MW	5	Him9
22 October at 09:17	1,869 MW	6	Him9
22 October at 09:07	1,274 MW	4	Him9
22 October at 08:57	676 MW	4	Him9
22 October at 08:47	889 MW	5	Him9
22 October at 08:37	648 MW	4	Him9
22 October at 08:27	109 MW	2	Him9
22 October at 08:17	98 MW	2	Him9
22 October at 08:08	85 MW	6	N21
22 October at 08:07	62 MW	1	Him9
22 October at 07:25	45 MW	4	N20
22 October at 07:07	136 MW	1	Him9
22 October at 07:04	47 MW	3	N
22 October at 06:25	35 MW	2	N21
21 October at 19:34	4 MW	3	N21
21 October at 18:52	14 MW	4	N20
21 October at 18:35	5 MW	5	N
21 October at 14:47	40 MW	1	Him9
21 October at 14:37	32 MW	1	Him9
21 October at 14:27	46 MW	2	Him9
21 October at 14:17	25 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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