LIGHT EARTHQUAKE
Rat Islands, Aleutian Islands, Alaska
A magnitude 4.2 earthquake struck Rat Islands, Aleutian Islands, Alaska on 19 Oct 2026, 16:27 UTC. The hypocentre was 52.2 km below the surface — shallow by seismological convention. 7 other earthquakes above our reporting threshold have been recorded within 250 km in the past 30 days.
- Depth
- 52.2 km
- Latitude
- 51.52°N
- Time
- 16:27 UTC
- Magnitude
- M4.2
shallow
178.37°E longitude
19 Oct 2026
mb
EPICENTRE
MAGNITUDE 4.2
Noticeable shaking of indoor objects. Damage is unlikely.
The scale is logarithmic: this released about 63 times the energy of a magnitude 3.0, roughly the energy of 30 tonnes of TNT.
52.2 KM DEEP
Shallow earthquakes release their energy close to the surface, so they are felt more strongly, and do more damage, than deeper earthquakes of the same magnitude.
NEARBY IN THE PAST 30 DAYS
7 earthquakes above our reporting threshold within 250 km of this one, the largest a magnitude 5.0.
OTHER RECENT EARTHQUAKES
19 Oct 2026, 17:45 UTC · 101.5 km deep
19 Oct 2026, 17:20 UTC · 41.5 km deep
19 Oct 2026, 16:27 UTC · 39.2 km deep
19 Oct 2026, 16:13 UTC · 536.1 km deep