Fire near d'Irkoutsk (RU)

60.15°N, 109.09°E · first detected on 1 October at 04:32

Permanent heat source, probably industrial: this is not a forest fire. A site that heats up day after day in the same place (factory, gas flare, steelworks, oil field) is seen by satellites as a hotspot. This page stays available, but this hotspot is counted neither in the list of the largest fires nor in the hectare totals.

What the satellites measured

This fire was tracked from 1 October at 04:32 to 22 October at 22:53, that is 22 days, through 319 satellite detections. The detected extent reaches 876 ha.

Detected extent: 876 ha
Cumulative power: 7,141 MW
Peak power, one pixel: 124 MW
VIIRS and MODIS detections: 319

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 24 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 22:53	116 MW	6	N
19 October at 23:14	51 MW	1	N21
19 October at 22:29	105 MW	3	N20
19 October at 22:10	44 MW	1	N
19 October at 21:34	63 MW	2	N21
19 October at 20:49	63 MW	4	N20
19 October at 20:30	79 MW	3	N
19 October at 19:52	71 MW	3	N21
19 October at 14:21	0 MW	2	Terra
19 October at 09:48	59 MW	1	Aqua
19 October at 08:22	25 MW	2	N
19 October at 07:46	20 MW	1	N21
19 October at 07:01	7 MW	1	N20
17 October at 21:28	12 MW	2	N20
17 October at 21:08	23 MW	2	N
17 October at 20:30	25 MW	3	N21
17 October at 19:45	69 MW	3	N20
17 October at 14:42	59 MW	2	Terra
16 October at 22:29	103 MW	2	N21
16 October at 21:47	61 MW	2	N20
16 October at 21:25	19 MW	2	N
16 October at 20:49	48 MW	2	N21
16 October at 20:06	89 MW	2	N20
16 October at 19:45	142 MW	6	N
16 October at 14:02	12 MW	1	Terra
16 October at 07:38	12 MW	1	N
16 October at 07:01	62 MW	1	N21
16 October at 06:19	66 MW	3	N20
16 October at 05:21	150 MW	3	N21
15 October at 23:25	12 MW	1	N
15 October at 22:04	5 MW	1	N20
15 October at 21:47	4 MW	1	N
15 October at 21:08	24 MW	4	N21
15 October at 20:24	81 MW	5	N20
15 October at 20:04	78 MW	7	N
15 October at 19:28	262 MW	8	N21
15 October at 13:23	96 MW	1	Terra
15 October at 07:21	66 MW	3	N21
14 October at 14:21	37 MW	2	Terra
13 October at 22:21	11 MW	1	N
13 October at 21:47	19 MW	1	N21
13 October at 21:02	5 MW	1	N20
13 October at 20:41	26 MW	3	N
13 October at 20:06	9 MW	1	N21
11 October at 22:23	4 MW	1	N21
11 October at 21:40	4 MW	4	N20
11 October at 21:19	17 MW	9	N
9 October at 22:59	129 MW	4	N21
9 October at 22:19	11 MW	1	N20
9 October at 21:57	10 MW	2	N
9 October at 21:21	19 MW	2	N21
9 October at 20:38	11 MW	1	N20
9 October at 20:17	9 MW	1	N
9 October at 10:01	186 MW	6	Aqua
9 October at 08:31	174 MW	6	N20
9 October at 08:25	324 MW	4	Aqua
9 October at 08:10	205 MW	4	N
9 October at 07:31	49 MW	2	N21
9 October at 06:46	121 MW	3	N20
9 October at 06:29	53 MW	2	N
8 October at 13:45	37 MW	1	Terra
8 October at 07:08	34 MW	2	N20
8 October at 06:49	44 MW	1	N
7 October at 22:53	6 MW	2	N20
7 October at 22:36	59 MW	4	N
7 October at 21:57	70 MW	3	N21
7 October at 21:15	26 MW	3	N20
7 October at 20:56	43 MW	4	N
7 October at 20:17	179 MW	4	N21
7 October at 19:34	166 MW	7	N20
7 October at 13:06	87 MW	1	Terra
7 October at 10:24	84 MW	1	Aqua
7 October at 08:48	85 MW	2	N
7 October at 08:46	140 MW	2	Aqua
7 October at 08:10	98 MW	2	N21
7 October at 07:25	34 MW	2	N20
7 October at 07:06	33 MW	2	N
7 October at 06:29	123 MW	4	N21
7 October at 05:47	69 MW	2	N20
7 October at 05:28	59 MW	2	N
7 October at 05:08	43 MW	1	Terra
6 October at 08:10	92 MW	1	Aqua
6 October at 07:25	21 MW	2	N
6 October at 06:51	32 MW	1	N21
5 October at 23:12	37 MW	3	N
5 October at 22:36	80 MW	5	N21
5 October at 21:51	20 MW	2	N20
5 October at 21:32	28 MW	1	N
5 October at 20:56	54 MW	2	N21
5 October at 20:13	59 MW	4	N20
5 October at 19:52	104 MW	5	N
4 October at 23:31	94 MW	4	N
4 October at 23:31	45 MW	2	Aqua
4 October at 22:53	70 MW	2	N21
4 October at 22:10	39 MW	2	N20
4 October at 21:51	36 MW	2	N
4 October at 21:13	36 MW	2	N21
4 October at 20:30	35 MW	2	N20
4 October at 20:11	33 MW	3	N
4 October at 19:34	89 MW	5	N21
3 October at 19:52	65 MW	4	N21
3 October at 13:47	28 MW	1	Terra
2 October at 21:51	14 MW	2	N21
2 October at 21:08	33 MW	6	N20
2 October at 20:47	15 MW	6	N
2 October at 14:46	109 MW	4	Terra
2 October at 05:08	111 MW	4	Terra
1 October at 23:16	54 MW	2	Aqua
1 October at 23:06	100 MW	6	N20
1 October at 22:49	39 MW	4	N
1 October at 22:12	43 MW	2	N21
1 October at 21:28	39 MW	2	N20
1 October at 21:08	32 MW	3	N
1 October at 20:32	42 MW	3	N21
1 October at 19:45	69 MW	5	N20
1 October at 14:06	30 MW	1	Terra
1 October at 09:52	82 MW	2	Aqua
1 October at 04:32	10 MW	1	Terra

5 other fires near d'Irkoutsk (RU)

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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