M4.1 earthquake Rat Islands, Aleutian Islands, Alaska

Rat Islands, Aleutian Islands, Alaska · Oct 17, 2026, 09:52 UTC

4.1 Magnitude 4.1 (mb)

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

Time	Oct 17, 2026, 09:52:05 UTC
Location	Rat Islands, Aleutian Islands, Alaska 51.754° N, 178.625° E
Depth	95 km (59 mi)
Last updated by USGS	Oct 28, 2026, 10:32 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.

3.1 218 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
4.2 Rat Islands, Aleutian Islands, Alaska Oct 19, 16:27 UTC
2.5 128 km W of Adak, Alaska Oct 18, 09:34 UTC
2.6 Rat Islands, Aleutian Islands, Alaska Oct 18, 04:55 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

Official sources

USGS event page (ShakeMap, technical details, updates)
Did you feel it? Tell USGS

All earthquakes today · More earthquakes in Alaska

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.

Live Earth Watch is not an official warning service. We show data published by government agencies; for warnings and instructions follow your local emergency officials and the National Weather Service.