Alaska earthquakes

M4.2 earthquake 80 km SSE of Sand Point, Alaska

A magnitude 4.2 earthquake struck 80 km SSE of Sand Point, Alaska on Thu, Jul 4, 2019, 2:39 PM AKDT (22:39 UTC), 31 km (19 mi) below the surface.

Sand Point forecast More in Alaska

Map

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

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The earthquake

Magnitude: 4.2 (mwr), light
Local time: Thu, Jul 4, 2019, 2:39 PM AKDT
UTC: 2019-07-04 22:39:53 UTC
Depth: 31.1 km (19.4 mi), shallow
Epicenter: 54.729° N, 159.830° W
Region: Alaska
Felt reports: 1
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

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

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting: Oblique reverse
Moment magnitude: 4.2 Mwr
Nodal plane 1: Strike 284°, dip 14°, rake 124°
Nodal plane 2: Strike 69°, dip 78°, rake 82°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 3.3 km horizontally, 4.6 km in depth
Magnitude uncertainty: ±0.07
Depth from: From location
Station coverage gap: 157°
Stations used: 319

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast80 kmSSE

Nearby

Within 100 km, magnitude 1.5 and up: 68 in the 60 days after this one and 24 in the 30 days before it.

After

The first 60 of 68.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70004adv (also filed as aacse0198ibr7l6, ak0198ibr7l6). Read Wed, Sep 30, 2026, 11:32 AM UTC.