Alaska earthquakes

M4.4 earthquake 9 km W of Tatitlek, Alaska

A magnitude 4.4 earthquake struck 9 km W of Tatitlek, Alaska on Sat, Jul 9, 2022, 2:56 AM AKDT (10:56 UTC), 24 km (15 mi) below the surface.

Valdez 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: 4.4 (Mwr, regional moment), light
Magnitude from: Alaska Earthquake Center
Local time: Sat, Jul 9, 2022, 2:56 AM AKDT
UTC: 2022-07-09 10:56:02 UTC
Depth: 24.1 km (15.0 mi), shallow
Epicenter: 60.857° N, 146.846° W
Region: Alaska
Felt reports: 63
Strongest shaking: IV, light shaking
Tsunami flag: Yes: a large quake in an oceanic region
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
4.4	Mwr, regional moment	Alaska Earthquake Center	Preferred · Preliminary
4.4	Mwr, regional moment	USGS National Earthquake Information Center	Reviewed · ±0.028 · 124 stations
4.4	ML, local (Richter)	NOAA National Tsunami Warning Center	Reviewed · 24 stations

What happened

The USGS’s account of the effects of this earthquake.

Felt at Anchorage, Valdez and the Mat-SU Valley.

From the USGS event page for ak0228qeea2m. U.S. Geological Survey text and figures are in the public domain.

Tsunami

The USGS flags a quake this large in an oceanic region. The flag does not mean a tsunami happened; the tsunami warning centers decide that, and their messages are below when they issued any.

Current tsunami warnings: tsunami.gov. Warnings in force in the US also appear on our alerts pages.

Shaking

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

Strongest estimated: IV, light shaking
Peak ground acceleration: 2.9% of gravity
Peak ground velocity: 0.2 cm/s
Map: Automatic

USGS ShakeMap: estimated shaking intensity around the epicenter — Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

63 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

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: 4.4 Mwr
Nodal plane 1: Strike 334°, dip 71°, rake -151°
Nodal plane 2: Strike 233°, dip 63°, rake -22°

How well it is located

Reviewed by a seismologist.

Stations used: 222

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 99 in the 60 days after this one and 40 in the 30 days before it.

After

The first 60 of 99.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0228qeea2m (also filed as us6000i16v, at00rer2dd). Read Sun, Oct 4, 2026, 11:30 PM UTC.