Magnitude
M4.7
Depth
49 km
Sensor hits
0
Observations
0
The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| start_utc | 1973-12-21T10:59:02.400000-05:00 |
|---|---|
| end_utc | 1973-12-21T10:59:02.400000-05:00 |
| lat | 52.489 |
| lon | -169.481 |
| origin_utc | 1973-12-21T10:59:02.400000-05:00 |
| place | 65 km SW of Nikolski, Alaska |
| status | reviewed |
| tsunami_flag | 0 |
| provenance | [{"source_slug":"usgs_earthquake","name":"USGS Earthquake","url":"https://earthquake.usgs.gov/fdsnws/event/1/query","retrieved_utc":"2026-07-01"}] |
| last_fix_utc | 1973-12-21T10:59:02.400000-05:00 |
| radius_km | 500 |
| window_hours_before | 6 |
| window_hours_after | 48 |