⚠️ This earthquake carries a tsunami threat. Follow official guidance from your national agency.

4.3MAG

LIGHT EARTHQUAKE

24 km SE of Kasilof, Alaska

1 hour ago

USGSTSUNAMI THREAT

A magnitude 4.3 earthquake struck 24 km SE of Kasilof, Alaska on 01 Nov 2026, 11:30 UTC. The hypocentre was 70.4 km below the surface — intermediate by seismological convention. The reporting agency flagged a tsunami threat for this event; follow official warnings rather than this page. The figures have been revised 14 times since the first report. 2 other earthquakes above our reporting threshold have been recorded within 250 km in the past 30 days.

Depth: 70.4 km
Latitude: 60.20°N
Time: 11:30 UTC
Magnitude: M4.3

EPICENTRE

View the official report↗

MAGNITUDE 4.3

Noticeable shaking of indoor objects. Damage is unlikely.

The scale is logarithmic: this released about 89 times the energy of a magnitude 3.0, roughly the energy of 43 tonnes of TNT.

70.4 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.