Alaska earthquakes

M3.7 earthquake 156 km S of McCarthy, Alaska

A magnitude 3.7 earthquake struck 156 km S of McCarthy, Alaska on Sat, Aug 17, 2024, 10:00 PM AKDT (06:00 UTC), 15 km (9 mi) below the surface.

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Map

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

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The earthquake

Magnitude: 3.7 (ml), minor
Local time: Sat, Aug 17, 2024, 10:00 PM AKDT
UTC: 2024-08-18 06:00:18 UTC
Depth: 14.7 km (9.1 mi), shallow
Epicenter: 60.030° N, 143.100° W
Region: Alaska
Strongest shaking: III, weak 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: III, weak shaking
Peak ground acceleration: 1.1% of gravity
Peak ground velocity: 0.3 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.

Fault motion and ground failure

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

Faulting: Strike-slip
Moment magnitude: 3.9 Mwr
Nodal plane 1: Strike 345°, dip 79°, rake -171°
Nodal plane 2: Strike 253°, dip 81°, rake -11°

How well it is located

Reviewed by a seismologist.

Stations used: 55

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 25 in the 60 days after this one and 6 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak024am4pt2a (also filed as us7000n7r1). Read Wed, Sep 30, 2026, 3:16 PM UTC.