Alaska earthquakes

M2.8 earthquake 7 km N of Knik, Alaska

A magnitude 2.8 earthquake struck 7 km N of Knik, Alaska on Fri, Jul 28, 2017, 11:52 PM AKDT (07:52 UTC), 42 km (26 mi) below the surface.

A larger quake followed: M4.3 19 km SE of Susitna North, Alaska. This one was a foreshock.

Knik-Fairview forecast More in Alaska

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

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The earthquake

Magnitude: 2.8 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Fri, Jul 28, 2017, 11:52 PM AKDT
UTC: 2017-07-29 07:52:20 UTC
Depth: 42.1 km (26.2 mi), shallow
Epicenter: 61.521° N, 149.738° W
Region: Alaska
Felt reports: 3
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
2.8	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
2.9	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed

Did you feel it?

3 people reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

How well it is located

Reviewed by a seismologist.

Stations used: 126

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 187 in the 60 days after this one and 82 in the 30 days before it.

After

The first 60 of 187.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0179nfc3qa (also filed as ak16380632, us2000a2gz). Read Sun, Oct 4, 2026, 11:09 PM UTC.