M4.5 earthquake near Nikolski, Alaska

93 km NNW of Nikolski, Alaska · Oct 23, 2026, 23:08 UTC

4.5 Magnitude 4.5 (mb)

Reviewed by a seismologist · source: U.S. Geological Survey

Time	Oct 23, 2026, 23:08:26 UTC
Location	93 km NNW of Nikolski, Alaska 53.751° N, 169.194° W
Depth	234 km (145 mi)
Last updated by USGS	Nov 6, 2026, 06:27 UTC

Tsunami

Official tsunami messages for the US are published by the US Tsunami Warning Centers. Outside the US, follow your national warning agency. Latest tsunami messages.

Other earthquakes nearby

USGS-recorded earthquakes within 200 km (124 mi) in the week before and after this one.

3.0 7 km W of Dutch Harbor, Alaska Oct 30, 19:53 UTC
2.8 55 km S of Nikolski, Alaska Oct 29, 23:53 UTC
2.6 80 km SW of Unalaska, Alaska Oct 29, 20:54 UTC
2.6 98 km WNW of Dutch Harbor, Alaska Oct 29, 04:27 UTC
2.5 108 km E of Nikolski, Alaska Oct 28, 15:53 UTC
2.5 95 km SSW of Unalaska, Alaska Oct 28, 06:37 UTC
2.5 103 km E of Nikolski, Alaska Oct 28, 04:40 UTC
2.7 96 km SSW of Unalaska, Alaska Oct 28, 02:05 UTC
3.4 110 km SSW of Nikolski, Alaska Oct 27, 18:41 UTC
2.5 73 km SW of Unalaska, Alaska Oct 27, 00:41 UTC
2.7 94 km SSW of Unalaska, Alaska Oct 23, 18:33 UTC
2.8 77 km E of Nikolski, Alaska Oct 23, 10:27 UTC
3.7 40 km SSE of Nikolski, Alaska Oct 23, 09:18 UTC
2.8 89 km SW of Nikolski, Alaska Oct 22, 15:13 UTC
2.8 49 km SSW of Unalaska, Alaska Oct 22, 06:07 UTC

Official sources

USGS event page (ShakeMap, technical details, updates)
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About this data

Earthquake data comes from the USGS real-time feeds and is checked every 5 minutes. Early magnitudes, locations and depths are automatic and can change when seismologists review the event. Nearest towns are calculated from GeoNames places with 15,000 or more people; an earthquake is listed under a country or state when the nearest such town within 300 km (186 mi) is there, or when USGS names that place.

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