LIGHT EARTHQUAKE
100 km WNW of False Pass, Alaska
A magnitude 4.1 earthquake struck 100 km WNW of False Pass, Alaska on 31 Aug 2026, 23:16 UTC. The hypocentre was 179.3 km below the surface — intermediate by seismological convention. 5 other earthquakes above our reporting threshold have been recorded within 250 km in the past 30 days.
- Depth
- 179.3 km
- Latitude
- 55.05°N
- Time
- 23:16 UTC
- Magnitude
- M4.1
intermediate
164.94°W longitude
31 Aug 2026
mb
EPICENTRE
MAGNITUDE 4.1
Noticeable shaking of indoor objects. Damage is unlikely.
The scale is logarithmic: this released about 45 times the energy of a magnitude 3.0, roughly the energy of 21 tonnes of TNT.
179.3 KM DEEP
At this depth the energy spreads before it reaches the surface. Shaking is usually weaker than a shallow earthquake of the same size, but it can be felt across a wider area.
NEARBY IN THE PAST 30 DAYS
5 earthquakes above our reporting threshold within 250 km of this one, the largest a magnitude 4.8.
OTHER RECENT EARTHQUAKES
18 Sept 2026, 02:12 UTC · 36.3 km deep
18 Sept 2026, 01:29 UTC · 106 km deep
18 Sept 2026, 01:07 UTC · 53.9 km deep
17 Sept 2026, 22:11 UTC · 82.7 km deep