USGS records a magnitude 4.5 earthquake near 121 km SE of Atka, Alaska. Event time: 2026-10-31T18:50:58.577Z. USGS may revise preliminary measurements.
- Reported magnitude: 4.5
- Location reported by USGS: 121 km SE of Atka, Alaska
- Recorded event time (UTC): 2026-10-31 18:50:58.577Z
- Reported depth: 1.0 kilometers