4.0
EarthquakeModerate
M4.0 earthquake - 263 km WNW of Attu Station, Alaska
3373 d ago · 23 Jul 2017, 05:59 UTC 263 km WNW of Attu Station, Alaska
What happened
A magnitude 4 earthquake struck 263 km WNW of Attu Station, Alaska on 23 Jul 2017, 05:59 UTC at a depth of 10 km.
Earthquakes of this size are classed as Light. Widely felt nearby; objects may shake or fall. Significant damage is unusual. This was a shallow earthquake, which tends to be felt more strongly at the surface.
Timeline
First reported by USGS
17 Oct 2026, 08:41 UTC
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Did you feel it?
Nearby in the last 30 days
No other events recorded within about 300 km in the last 30 days.