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11 Apr 2026, 10:07 UTC · Apr 11, 6:07 AM ET

M3.9 earthquake 178 km SW of Nikolski, Alaska

A magnitude 3.9 earthquake struck 178 km SW of Nikolski, Alaska at Apr 11, 6:07 AM ET, 10 km deep, minor – felt by people near the epicenter.

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M3.9 178 km SW of Nikolski, AlaskaM4.6 89 km SW of Nikolski, AlaskaM4.7 172 km E of Atka, AlaskaM4.7 115 km SSW of Nikolski, AlaskaM4.7 151 km SSW of Nikolski, AlaskaM4.7 189 km WSW of Nikolski, AlaskaM4.8 174 km SW of Nikolski, AlaskaM4.8 163 km SW of Nikolski, AlaskaM4.9 168 km E of Atka, AlaskaM5.3 167 km SW of Nikolski, AlaskaM5.5 93 km SW of Nikolski, AlaskaM5.6 172 km ENE of Atka, AlaskaM6.0 96 km SW of Nikolski, Alaska
under 33–44–55–66+
Magnitude3.9 mb
Time11 Apr 2026, 10:07 UTC
Location52.022°, -171.023° – 178 km SW of Nikolski, Alaska
Depth10.0 km
Felt reports0
Max. estimated intensity (MMI)2.8
USGS eventus6000spah
Within 100 km

Other earthquakes nearby this year

Mag.WhereWhen (ET)DepthFelt
6.096 km SW of Nikolski, Alaska · tsunami flag · PAGER greenFeb 23, 12:11 AM
236 d ago		14 km10 reports
5.6172 km ENE of Atka, Alaska · PAGER greenMay 22, 8:16 AM
147 d ago		15 km–
5.593 km SW of Nikolski, Alaska · tsunami flag · PAGER greenFeb 23, 5:02 AM
236 d ago		8 km–
5.3167 km SW of Nikolski, AlaskaMay 23, 5:49 PM
146 d ago		10 km–
4.9168 km E of Atka, Alaska · PAGER greenMay 18, 5:37 PM
151 d ago		10 km–
4.8174 km SW of Nikolski, AlaskaMay 25, 1:18 AM
145 d ago		21 km–
4.8163 km SW of Nikolski, AlaskaMay 24, 5:45 AM
146 d ago		10 km–
4.7172 km E of Atka, AlaskaApr 10, 8:39 PM
189 d ago		63 km–
4.7115 km SSW of Nikolski, AlaskaFeb 19, 9:38 AM
239 d ago		10 km–
4.7151 km SSW of Nikolski, AlaskaJan 19, 9:33 PM
270 d ago		10 km–
4.7189 km WSW of Nikolski, Alaska · tsunami flagNov 9, 4:36 AM
342 d ago		54 km–
4.689 km SW of Nikolski, AlaskaSep 1, 3:46 AM
46 d ago		45 km–
FAQ

About this earthquake

How strong was the 178 km SW of Nikolski, Alaska earthquake?

Magnitude 3.9 (mb), minor – felt by people near the epicenter. Depth 10 km. Strongest estimated shaking: intensity 2.8 on the Modified Mercalli scale.

Was it felt?

No felt reports have been submitted to the USGS so far.

Were there aftershocks?

No earthquakes within 100 km have followed so far in our records.

Earthquakes

More

Source: U.S. Geological Survey (USGS) earthquake catalog, real-time feeds and FDSN event service; magnitudes and locations are revised by seismologists for hours after an event. Times are Eastern (ET) unless marked UTC. Not an alert service: for warnings follow local authorities and tsunami centers.

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M3.9 earthquake 178 km SW of Nikolski, Alaska — 77.today