Fire near Khabarovsk (RU)

58.21°N, 138.21°E · first detected on 11 September at 12:34

What the satellites measured

This fire was tracked from 11 September at 12:34 to 17 September at 05:17, that is 6 days, through 445 satellite detections. The detected extent reaches 1,844 ha.

Detected extent: 1,844 ha
Cumulative power: 2,246 MW
Peak power, one pixel: 43 MW
VIIRS and MODIS detections: 445

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 8 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
17 September at 05:17	12 MW	3	N20
17 September at 05:00	10 MW	1	N
15 September at 07:55	54 MW	2	Aqua
15 September at 06:42	140 MW	12	N21
15 September at 05:55	146 MW	16	N20
15 September at 05:38	104 MW	20	N
15 September at 05:00	97 MW	16	N21
15 September at 02:20	10 MW	1	Terra
14 September at 05:19	11 MW	3	N21
13 September at 20:21	12 MW	7	N20
13 September at 20:04	20 MW	12	N
13 September at 19:28	38 MW	19	N21
13 September at 18:41	33 MW	15	N20
13 September at 18:24	7 MW	3	N
13 September at 12:13	12 MW	1	Terra
13 September at 06:34	65 MW	10	N20
13 September at 06:14	82 MW	13	N
13 September at 05:38	130 MW	21	N21
13 September at 04:53	107 MW	17	N20
13 September at 04:34	10 MW	2	N
13 September at 03:58	41 MW	7	N21
13 September at 02:39	31 MW	2	Terra
12 September at 19:45	2 MW	1	N21
12 September at 19:02	37 MW	16	N20
12 September at 18:41	10 MW	7	N
12 September at 18:05	15 MW	6	N21
12 September at 06:55	73 MW	7	N20
12 September at 06:34	38 MW	9	N
12 September at 05:57	133 MW	19	N21
12 September at 04:51	152 MW	19	N
12 September at 04:15	205 MW	10	N21
12 September at 03:32	36 MW	5	N20
12 September at 01:58	18 MW	1	Terra
11 September at 21:00	3 MW	1	N20
11 September at 20:43	16 MW	10	N
11 September at 20:04	28 MW	9	N21
11 September at 19:20	60 MW	39	N20
11 September at 19:02	72 MW	36	N
11 September at 18:24	98 MW	36	N21
11 September at 17:39	22 MW	7	N20
11 September at 12:34	60 MW	4	Terra
10 September at 20:24	41 MW	20	N21
10 September at 19:41	22 MW	18	N20
10 September at 19:20	3 MW	3	N
10 September at 18:43	3 MW	1	N21
10 September at 17:58	107 MW	41	N20
10 September at 17:37	60 MW	12	N
10 September at 08:01	241 MW	5	Aqua
10 September at 06:34	434 MW	28	N21
10 September at 06:23	79 MW	1	Aqua
10 September at 05:49	27 MW	4	N20

6 other fires near Khabarovsk (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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