M4.2 earthquake near Adak, Alaska

164 km S of Adak, Alaska · Oct 10, 2026, 12:30 UTC

4.2 Magnitude 4.2 (mb)

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

Time	Oct 10, 2026, 12:30:41 UTC
Location	164 km S of Adak, Alaska 50.403° N, 176.418° W
Depth	10 km (6 mi)
Last updated by USGS	Oct 21, 2026, 09:02 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.

4.0 103 km SSE of Adak, Alaska Oct 17, 03:33 UTC
3.0 50 km SSW of Adak, Alaska Oct 17, 02:54 UTC
2.7 150 km SW of Adak, Alaska Oct 16, 23:20 UTC
2.5 79 km SW of Adak, Alaska Oct 16, 22:05 UTC
3.1 222 km S of Adak, Alaska Oct 16, 20:58 UTC
2.5 69 km SSW of Adak, Alaska Oct 16, 20:40 UTC
2.7 56 km SSE of Adak, Alaska Oct 16, 17:09 UTC
2.5 65 km S of Adak, Alaska Oct 16, 13:13 UTC
2.9 49 km S of Adak, Alaska Oct 16, 13:11 UTC
2.5 156 km SW of Adak, Alaska Oct 15, 18:19 UTC
2.6 69 km ENE of Adak, Alaska Oct 15, 15:54 UTC
2.5 128 km SSW of Atka, Alaska Oct 15, 15:20 UTC
2.5 76 km SSW of Adak, Alaska Oct 14, 16:45 UTC
2.5 78 km WSW of Adak, Alaska Oct 13, 20:39 UTC
2.5 120 km SW of Adak, Alaska Oct 13, 12:12 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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