A closer look at Earth's natural signals

Schumann resonance.
A moment, saved.

A dated observation, kept just as it was shared. See the source, read the chart and explore what came before.

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Saved observation

5.3A1

First-mode amplitude

19 Oct 2026 · 23:55 UTC

This is a local station observation in relative source units. A larger amplitude does not mean that the resonance frequency has become that number.

Captured 21 Oct 2026, 13:29 UTC. This shared view stays as captured; later source revisions may differ.

Relative amplitude 19 Oct 2026

19 Oct 202618 Oct 2026Gaps = no observation

Observed maximum

17.0relative units

Compared with previous day

+0.6 relative units288 matched observations · mean difference

First-mode frequency

7.5Hz23:55 UTC · separate observation

Station observations · Tomsk observatory ↗

Relative source units, not pT. Amplitude is not frequency.

First-mode amplitude describes the strength of a signal at one station. Frequency describes where the resonance peak sits; it is a different measurement.

Read the chart guide ↗

View observations as a table

19 Oct 2026 · relative amplitude · UTC
Time	Relative amplitude	Previous day, same time
00:00	4.115	3.576
00:05	5.264	3.425
00:10	5.52	3.327
00:15	4.4	3.414
00:20	4.785	3.321
00:25	4.547	3.971
00:30	4.515	3.419
00:35	5.091	3.501
00:40	3.86	12.075
00:45	5.001	16.195
00:50	5.056	4.881
00:55	5.302	3.473
01:00	5.467	3.649
01:05	4.969	4.07
01:10	5.72	3.612
01:15	6.426	3.473
01:20	5.14	4.085
01:25	4.865	3.807
01:30	3.863	3.603
01:35	5.136	3.807
01:40	5.045	3.823
01:45	4.903	4.37
01:50	4.979	4.098
01:55	5.662	4.065
02:00	4.721	4.171
02:05	4.337	3.676
02:10	4.321	3.971
02:15	4.558	3.248
02:20	5.365	3.702
02:25	4.221	3.199
02:30	4.241	3.252
02:35	4.247	3.162
02:40	5.136	2.949
02:45	5.948	2.932
02:50	5.075	3.298
02:55	5.341	3.155
03:00	5.781	3.295
03:05	4.778	3.186
03:10	11.194	2.889
03:15	4.651	3.079
03:20	6.455	3.338
03:25	4.375	2.784
03:30	4.323	2.432
03:35	8.067	2.502
03:40	4.235	13.261
03:45	3.923	2.915
03:50	4.325	2.763
03:55	4.761	3.693
04:00	3.484	2.566
04:05	7.798	2.841
04:10	6.342	3.199
04:15	3.4	2.732
04:20	4.099	2.53
04:25	3.087	2.524
04:30	3.657	2.773
04:35	3.603	7.877
04:40	3.624	2.669
04:45	3.821	2.392
04:50	3.112	2.782
04:55	3.4	3.35
05:00	2.966	2.39
05:05	3.51	3.078
05:10	3.238	3.311
05:15	2.964	3.242
05:20	3.356	4.177
05:25	3.111	3.061
05:30	3.963	2.689
05:35	3.481	3.346
05:40	6.413	2.752
05:45	2.966	2.851
05:50	3.054	3.57
05:55	3.037	2.808
06:00	3.203	2.783
06:05	14.242	2.595
06:10	4.216	2.608
06:15	3.951	2.797
06:20	4.018	2.73
06:25	4.177	3.229
06:30	5.427	2.763
06:35	4.639	3.592
06:40	3.407	2.352
06:45	3.714	3.155
06:50	4.02	2.782
06:55	3.306	14.779
07:00	3.89	2.436
07:05	5.071	3.023
07:10	3.558	2.791
07:15	3.626	2.752
07:20	3.839	3.726
07:25	3.929	4.088
07:30	4.576	7.389
07:35	3.995	3.116
07:40	3.865	3.862
07:45	3.949	2.878
07:50	3.892	3.895
07:55	3.812	5.047
08:00	4.084	3.471
08:05	3.904	3.461
08:10	3.965	3.718
08:15	3.537	3.483
08:20	3.763	3.622
08:25	7.527	3.731
08:30	3.419	3.486
08:35	3.77	3.535
08:40	4.33	4.01
08:45	3.862	6.052
08:50	3.631	4.069
08:55	3.783	4.071
09:00	3.894	3.651
09:05	4.328	4.449
09:10	4.195	4.054
09:15	4.16	4.69
09:20	3.965	4.003
09:25	4.047	4.511
09:30	3.985	3.694
09:35	4.151	3.881
09:40	4.751	4.188
09:45	4.063	4.05
09:50	3.886	3.558
09:55	3.686	4.146
10:00	3.921	3.284
10:05	3.798	3.924
10:10	4.463	3.8
10:15	3.756	3.321
10:20	4.302	3.649
10:25	4.234	3.254
10:30	3.655	3.869
10:35	3.738	3.558
10:40	4.035	3.679
10:45	3.61	3.462
10:50	3.486	3.907
10:55	3.529	3.926
11:00	3.461	3.009
11:05	3.563	3.143
11:10	3.652	3.548
11:15	3.772	4.085
11:20	3.969	3.228
11:25	4.48	3.136
11:30	3.528	3.321
11:35	3.707	3.234
11:40	3.272	3.102
11:45	3.559	2.616
11:50	4.013	3.421
11:55	3.248	3.027
12:00	3.476	3.04
12:05	4.32	3.558
12:10	4.612	3.084
12:15	3.877	4.014
12:20	4.43	3.814
12:25	4.062	3.568
12:30	4.986	3.516
12:35	5.533	3.075
12:40	4.692	2.814
12:45	4.686	4.417
12:50	4.457	2.708
12:55	4.325	2.877
13:00	3.561	2.491
13:05	6.96	3.327
13:10	3.673	3.226
13:15	3.216	2.639
13:20	4.144	2.867
13:25	4.37	2.889
13:30	3.628	2.834
13:35	3.952	2.675
13:40	4.005	2.74
13:45	2.901	2.446
13:50	3.345	3.004
13:55	3.213	2.893
14:00	4.573	3.134
14:05	4.633	2.974
14:10	5.271	3.075
14:15	4.638	2.746
14:20	5.555	2.701
14:25	5.597	3.019
14:30	5.264	4.102
14:35	4.779	3.138
14:40	4.417	3.253
14:45	3.273	4.763
14:50	3.965	4.258
14:55	3.862	4.169
15:00	4.5	3.268
15:05	5.155	3.472
15:10	3.716	3.193
15:15	3.159	3.496
15:20	3.348	3.531
15:25	3.545	3.825
15:30	3.341	3.81
15:35	4.115	3.794
15:40	4.125	3.699
15:45	3.942	3.541
15:50	3.736	3.681
15:55	3.583	3.58
16:00	3.732	4.559
16:05	3.354	4.361
16:10	3.268	5.83
16:15	3.188	5.255
16:20	3.427	4.457
16:25	3.266	3.898
16:30	3.592	3.96
16:35	3.545	3.585
16:40	3.437	3.473
16:45	3.153	3.378
16:50	3.035	3.292
16:55	3.369	3.628
17:00	4.046	3.142
17:05	3.875	3.809
17:10	5.934	3.994
17:15	3.627	4.33
17:20	3.83	3.951
17:25	4.371	3.699
17:30	3.567	4.24
17:35	4.482	4.337
17:40	6.946	4.256
17:45	5.202	4.137
17:50	4.742	4.511
17:55	4.335	4.397
18:00	4.35	3.723
18:05	4.478	4.437
18:10	5.851	5.02
18:15	5.355	4.993
18:20	4.518	4.045
18:25	5.335	4.078
18:30	4.912	4.241
18:35	4.177	4.156
18:40	4.173	4.008
18:45	4.294	4.845
18:50	5.199	4.357
18:55	5.628	4.482
19:00	5.888	4.172
19:05	4.282	4.657
19:10	4.971	4.247
19:15	4.706	4.483
19:20	4.746	4.282
19:25	4.638	4.184
19:30	4.121	4.057
19:35	3.993	4.215
19:40	4.147	4.453
19:45	4.889	4.651
19:50	4.175	4.478
19:55	4.338	4.571
20:00	4.81	4.495
20:05	5.75	4.543
20:10	4.51	4.545
20:15	4.239	4.612
20:20	4.62	4.764
20:25	5.761	4.04
20:30	5.36	4.865
20:35	4.396	4.636
20:40	4.498	4.65
20:45	4.111	5.092
20:50	3.806	4.984
20:55	4.173	4.589
21:00	4.283	4.562
21:05	4.191	5.015
21:10	4.474	4.404
21:15	4.927	4.618
21:20	7.042	4.89
21:25	5.562	4.536
21:30	6.215	4.142
21:35	6.017	4.16
21:40	11.027	4.498
21:45	16.97	6.711
21:50	4.412	4.531
21:55	4.899	4.351
22:00	4.882	3.854
22:05	5.169	4.457
22:10	4.579	4.589
22:15	4.469	4.731
22:20	5.016	4.825
22:25	5.396	4.913
22:30	5.406	4.48
22:35	5.561	5.08
22:40	5.554	4.518
22:45	5.148	4.604
22:50	5.224	4.62
22:55	5.403	5.223
23:00	5.093	5.338
23:05	5.559	4.599
23:10	5.558	5.297
23:15	6.384	5.103
23:20	5.917	5.69
23:25	4.889	7.634
23:30	5.422	5.888
23:35	5.51	4.604
23:40	4.288	5.921
23:45	4.572	3.823
23:50	4.289	5.372
23:55	5.334	5.402

Schumann Pulse for iPhone

A little context.
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Read the signal with confidence.

01 / The chart

Amplitude is not frequency ↗

Read axes, colours and missing periods without turning every bright band into a claim.

02 / The science

Why Earth has resonances ↗

Lightning, the Earth–ionosphere cavity and the often-quoted 7.83 Hz fundamental.

03 / The stations

A world of listening stations ↗

Explore documented research locations and the different instruments behind the observations.

Different stations. Different measurements.

Schumann resonances are electromagnetic resonances of the Earth–ionosphere cavity, mainly excited by lightning. A station measures a local signal shaped by global activity, propagation, local interference and its instruments.

Amplitude describes signal strength. Frequency, measured in hertz, describes the position of a resonance peak. The often-quoted 7.83 Hz is an approximate reference for the first mode, not a live reading or a fixed number for every moment. Different instruments and source units mean the stations’ amplitudes should not be combined into a global score.

For Tomsk, we draw original charts from subscribed numeric observations, using five-minute averages of samples around each timestamp. Times are converted to UTC. The comparison uses matching times on both days; missing observations remain gaps. A reading more than 90 minutes old is marked delayed. Etna provides an attributed source spectrogram; Nagycenk’s display is linked at the observatory. Neither has a numerical feed connected here yet.

Understand the frequencies ↗ · Our source standards