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Observation record / USGS 地震速报
M 4.5 - 158 km S of False Pass, Alaska
First seen 10/21, 22:19 · Last observed 10/22, 00:00 · Source data is current
Read the original source ↗Title-based outlineM 4.5 - 158 km S of False Pass, Alaska
Why it mattersOriginal USGS magnitude and event time for checking records. Magnitude is not popularity, an impact assessment or an early warning.
30 minutesRank movement-1
Baseline observed 10/21, 23:30
1 hourRank movement-2
Baseline observed 10/21, 22:59
24 hoursRank movement—
Building history
Publication position history
11 observationsPublication feed in source order. Position changes do not count as heat or momentum.
USGS public domain; attribution
View original observation times and ranks
| Observation time (Beijing) | Source position |
|---|---|
| 10/22, 00:00 | 5 |
| 10/21, 23:50 | 4 |
| 10/21, 23:40 | 4 |
| 10/21, 23:30 | 4 |
| 10/21, 23:20 | 4 |
| 10/21, 23:10 | 3 |
| 10/21, 22:59 | 3 |
| 10/21, 22:49 | 3 |
| 10/21, 22:39 | 3 |
| 10/21, 22:29 | 3 |
| 10/21, 22:19 | 3 |
Daily aggregate history
| 日期 | Best daily position | Last daily position | Observations |
|---|---|---|---|
| 2026-10-21 | 3 | 4 | 10 |
| 2026-10-22 | 5 | 5 | 1 |