A magnitude 8.1 (MW) earthquake occurred on 1966-10-17, 16:41 local time (21:41 UTC) (just now), centered Off the coast of Huaura (101 km NW, Peru). The hypocenter was located at a intermediate depth of 37.4 km. Primary telemetry verified by USGS alongside 1 regional seismic monitoring networks.
Curated Global Seismic Archive (1700–Present)
21.30 Mt TNT
intermediate (35–70 km (Intermediate))
Injuries: > 5,000 · ~17.5M 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 |
|---|---|---|
| Pativilca · Lima | 71 km | MMI VIII |
| Huaura · Lima | 101 km | MMI VIII |
| Huacho · Lima | 101 km | MMI VIII |
| Casma · Ancash | 143 km | MMI VIII |
| Chancay · Lima | 160 km | MMI VII |
| Huaraz · Ancash | 165 km | MMI VII |
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 | iscgem842581 | M 8.1 | 37.4 km | -10.70, -78.45 |
Nearest mapped active fault: Unnamed Fault, 5 km away, slip rate ~15.0 mm/yr (GEM Global Active Faults).