First published · Last updated
M 4.0 earthquake 166 km SW of Nikolski, Alaska
USGS reports a magnitude 4.0 earthquake located 166 km SW of Nikolski, Alaska (coordinates 52.014, -170.792) at depth 12.9 km. Report published 2026-09-19T08:47:50.579Z.
Categories: severe-weather-and-natural-disasters
Generated scores
Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.
- Confidence
- 9/10
- Geographic reach
- 2/10
- Global importance
- 3/10
- Impact magnitude
- 3/10
- Positivity
- 1/10
- Urgency
- 5/10
Why it matters
An officially recorded earthquake event in the Aleutian region. Relevant for local awareness and seismic monitoring; USGS event pages provide authoritative event details and any follow-up alerts.

