M4.2 earthquake Rat Islands, Aleutian Islands, Alaska

Rat Islands, Aleutian Islands, Alaska · Oct 19, 2026, 16:27 UTC

4.2 Magnitude 4.2 (mb)

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

Time	Oct 19, 2026, 16:27:45 UTC
Location	Rat Islands, Aleutian Islands, Alaska 51.527° N, 178.382° E
Depth	52 km (32 mi)
Last updated by USGS	Nov 8, 2026, 16:15 UTC

Tsunami

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Other earthquakes nearby

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

3.1 218 km WSW of Adak, Alaska Oct 22, 16:57 UTC
2.6 196 km W of Adak, Alaska Oct 22, 07:09 UTC
2.6 Rat Islands, Aleutian Islands, Alaska Oct 22, 04:33 UTC
2.5 Rat Islands, Aleutian Islands, Alaska Oct 21, 00:13 UTC
2.6 Rat Islands, Aleutian Islands, Alaska Oct 18, 04:55 UTC
4.1 Rat Islands, Aleutian Islands, Alaska Oct 17, 09:52 UTC
2.8 Rat Islands, Aleutian Islands, Alaska Oct 17, 02:06 UTC
2.9 Rat Islands, Aleutian Islands, Alaska Oct 16, 14:34 UTC
2.5 Rat Islands, Aleutian Islands, Alaska Oct 16, 02:08 UTC
3.0 Rat Islands, Aleutian Islands, Alaska Oct 15, 10:39 UTC
2.9 154 km W of Adak, Alaska Oct 15, 06:44 UTC
2.6 295 km W of Adak, Alaska Oct 15, 03:21 UTC
2.8 258 km W of Adak, Alaska Oct 14, 21:15 UTC
3.9 294 km ESE of Attu Station, Alaska Oct 14, 11:20 UTC
2.8 271 km WSW of Adak, Alaska Oct 14, 05:35 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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