M1.5 earthquake 30 km ESE of Igiugig, Alaska

A magnitude 1.5 earthquake struck 30 km ESE of Igiugig, Alaska on Sat, Mar 31, 2018, 4:45 PM AKDT (00:45 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.4 59 km SSE of Kokhanok, Alaska. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.5 and up: 48 in the 60 days after this one and 26 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event ak01846i6b48 (also filed as ak18872251). Read Sun, Oct 4, 2026, 8:35 PM UTC.