Alaska earthquakes

M4.1 earthquake 259 km SE of Perryville, Alaska

A magnitude 4.1 earthquake struck 259 km SE of Perryville, Alaska on Tue, Jun 29, 2021, 6:36 AM AKDT (14:36 UTC), 10 km (6 mi) below the surface.

Sand Point forecastMore 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
4.1 (mb), light
Local time
UTC
2021-06-29 14:36:06 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
54.288° N, 156.231° W
Region
Alaska
Strongest shaking
I, not felt shaking
Tsunami flag
No
Status
Reviewed by a seismologist

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated
I, not felt shaking
Peak ground acceleration
0.0% of gravity
Peak ground velocity
-6.5 cm/s
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 4.4 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.21
Depth from
Operator assigned
Station coverage gap
168°
Stations used
50

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 94 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 94.

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000equ9 (also filed as ak02189xa954). Read Mon, Sep 28, 2026, 2:07 PM UTC.