This undersea earthquake generated recorded tsunami waves across coastal and trans-oceanic sectors. Preserved in seismic archive for scientific reference — no active hazard exists.
A magnitude 9.2 (MW) earthquake occurred on 1964-03-28, 17:36 local time (03:36 UTC) (just now), centered 142 km E of Anchorage (USA). The hypocenter was located at a shallow depth of 25 km. Primary telemetry verified by USGS/ISC-GEM alongside 1 regional seismic monitoring networks.
Curated Global Seismic Archive (1700–Present)
951.50 Mt TNT
shallow (Shallow crustal)
Injuries: > 5,000 · ~10.8M felt
Timeline of foreshocks, main rupture, aftershocks and machine learning risk probability evolution.
Shaking intensity is modelled from magnitude, depth and distance (GMPE attenuation), not reported by residents.
| Town | Distance | Intensity |
|---|---|---|
| Anchorage · Alaska | 142 km | MMI IX |
Independent solutions for the same rupture. Differences of 0.1–0.3 in magnitude are normal and reflect method and station coverage.
| Agency | Source ID | Magnitude | Depth | Epicenter |
|---|---|---|---|---|
USGS Primary | official19640328033616_30 | M 9.2 | 25 km | 60.91, -147.34 |
Nearest mapped active fault: Aleutian Megathrust, 5 km away, slip rate ~15.0 mm/yr (GEM Global Active Faults).
View live seismic monitoring, historical danger benchmarks, fault slip models and recurrence intervals for this zone.