27 Mar 2026, 08:43 UTC · Mar 27, 4:43 AM ET

M4.0 earthquake 75 km SSW of Attu Station, Alaska

A magnitude 4.0 earthquake struck 75 km SSW of Attu Station, Alaska at Mar 27, 4:43 AM ET, 10 km deep, light – felt by most people nearby, rattling windows, rarely damage.

under 33–44–55–66+

Magnitude	4.0 mb
Time	27 Mar 2026, 08:43 UTC
Location	52.270°, 172.599° – 75 km SSW of Attu Station, Alaska
Depth	10.0 km
Felt reports	0
USGS event	us6000sn8z

Within 100 km

Other earthquakes nearby this year

Mag.	Where	When (ET)	Depth	Felt
4.3	84 km WNW of Attu Station, Alaska	Dec 27, 4:56 PM 293 d ago	38 km	–
3.9	32 km WSW of Attu Station, Alaska	Aug 11, 5:26 AM 67 d ago	35 km	–
3.9	143 km SW of Attu Station, Alaska	May 14, 6:54 PM 155 d ago	10 km	–
3.9	125 km SSW of Attu Station, Alaska	Mar 1, 5:13 AM 229 d ago	10 km	–
3.9	61 km WSW of Attu Station, Alaska	Nov 15, 7:53 AM 335 d ago	36 km	–
3.8	98 km SE of Attu Station, Alaska	May 17, 7:16 AM 152 d ago	35 km	–
3.2	84 km W of Attu Station, Alaska	Aug 8, 12:10 AM 70 d ago	35 km	–

FAQ

About this earthquake

How strong was the 75 km SSW of Attu Station, Alaska earthquake?

Magnitude 4.0 (mb), light – felt by most people nearby, rattling windows, rarely damage. Depth 10 km.

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.