Alaska earthquakes

M3.4 earthquake 38 km SE of Pedro Bay, Alaska

A magnitude 3.4 earthquake struck 38 km SE of Pedro Bay, Alaska on Fri, Oct 27, 2017, 2:43 PM AKDT (22:43 UTC), 119 km (74 mi) below the surface.

A larger quake followed: M4.8 68 km E of Port Alsworth, Alaska. This one was a foreshock.

Anchor Point forecast More in Alaska

Map

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

Open the live map with earthquakes

The earthquake

Magnitude: 3.4 (ML, local (Richter)), minor
Magnitude from: Alaska Earthquake Center
Local time: Fri, Oct 27, 2017, 2:43 PM AKDT
UTC: 2017-10-27 22:43:37 UTC
Depth: 118.5 km (73.6 mi), intermediate-depth
Epicenter: 59.564° N, 153.587° W
Region: Alaska
Felt reports: 1
Tsunami flag: No
Status: Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
3.4	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
3.4	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

How well it is located

Reviewed by a seismologist.

Stations used: 196

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: at least 200 in the 60 days after this one and at least 200 in the 30 days before it.

After

The first 60 of at least 200.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017dsiky4e (also filed as ak17105789, us1000axwe). Read Sat, Oct 3, 2026, 1:29 AM UTC.