31 May 2026, 19:18 UTC · May 31, 3:18 PM ET

M3.9 earthquake 204 km WNW of Attu Station, Alaska

A magnitude 3.9 earthquake struck 204 km WNW of Attu Station, Alaska at May 31, 3:18 PM ET, 10 km deep, minor – felt by people near the epicenter.

under 33–44–55–66+

Magnitude	3.9 mb
Time	31 May 2026, 19:18 UTC
Location	53.266°, 170.216° – 204 km WNW of Attu Station, Alaska
Depth	10.0 km
Felt reports	0
Max. estimated intensity (MMI)	1.4
USGS event	us7000sqx3

Within 100 km

Other earthquakes nearby this year

Mag.	Where	When (ET)	Depth	Felt
4.5	151 km W of Attu Station, Alaska	Mar 22, 8:04 AM 208 d ago	10 km	–
4.3	187 km WNW of Attu Station, Alaska	Oct 18, 9:07 AM 363 d ago	35 km	–
4.2	124 km WNW of Attu Station, Alaska	Oct 14, 10:10 AM 367 d ago	44 km	–
4.0	150 km W of Attu Station, Alaska	Jul 4, 12:32 AM 105 d ago	10 km	–
3.9	167 km WNW of Attu Station, Alaska	Jul 1, 4:55 PM 107 d ago	39 km	–
3.7	131 km W of Attu Station, Alaska	Apr 25, 9:32 AM 174 d ago	10 km	–

FAQ

About this earthquake

How strong was the 204 km WNW of Attu Station, Alaska earthquake?

Magnitude 3.9 (mb), minor – felt by people near the epicenter. Depth 10 km. Strongest estimated shaking: intensity 1.4 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

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.