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Observation record / USGS 地震速报

M 4.0 - 161 km S of Nikolski, Alaska

First seen 10/19, 21:26 · Last observed 10/20, 01:27 · Source data is current

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Title-based outlineM 4.0 - 161 km S of Nikolski, Alaska

Why it mattersOriginal USGS magnitude and event time for checking records. Magnitude is not popularity, an impact assessment or an early warning.

Published 10/19, 13:08

30 minutesRank movement—

Building history

1 hourRank movement—

Building history

24 hoursRank movement—

Building history

Publication position history

25 observations

Publication feed in source order. Position changes do not count as heat or momentum.

233010/19, 21:26 · 23 places10/19, 21:36 · 23 places10/19, 21:46 · 23 places10/19, 21:56 · 23 places10/19, 22:06 · 23 places10/19, 22:16 · 23 places10/19, 22:26 · 23 places10/19, 22:36 · 23 places10/19, 22:46 · 23 places10/19, 22:56 · 23 places10/19, 23:06 · 24 places10/19, 23:16 · 24 places10/19, 23:26 · 24 places10/19, 23:36 · 24 places10/19, 23:46 · 24 places10/19, 23:56 · 25 places10/20, 00:06 · 26 places10/20, 00:16 · 26 places10/20, 00:27 · 25 places10/20, 00:37 · 26 places10/20, 00:47 · 27 places10/20, 00:57 · 29 places10/20, 01:07 · 29 places10/20, 01:17 · 29 places10/20, 01:27 · 30 places10/19, 21:2610/20, 01:27
USGS public domain; attribution
View original observation times and ranks
Observation time (Beijing)Source position
10/20, 01:2730
10/20, 01:1729
10/20, 01:0729
10/20, 00:5729
10/20, 00:4727
10/20, 00:3726
10/20, 00:2725
10/20, 00:1626
10/20, 00:0626
10/19, 23:5625
10/19, 23:4624
10/19, 23:3624
10/19, 23:2624
10/19, 23:1624
10/19, 23:0624
10/19, 22:5623
10/19, 22:4623
10/19, 22:3623
10/19, 22:2623
10/19, 22:1623
10/19, 22:0623
10/19, 21:5623
10/19, 21:4623
10/19, 21:3623
10/19, 21:2623
Daily aggregate history
日期Best daily positionLast daily positionObservations
2026-10-19232516
2026-10-2025309