11 Sept 2026, 10:47 UTC · Sep 11, 6:47 AM ET · tsunami flag

M5.1 earthquake 149 km WSW of Adak, Alaska

A magnitude 5.1 earthquake struck 149 km WSW of Adak, Alaska at Sep 11, 6:47 AM ET, 37 km deep, moderate – felt widely, some damage to weak buildings.

under 33–44–55–66+

Magnitude	5.1 mwr
Time	11 Sept 2026, 10:47 UTC
Location	51.173°, -178.468° – 149 km WSW of Adak, Alaska
Depth	37.2 km
Felt reports	0
Max. estimated intensity (MMI)	5.3
USGS event	us7000tgky

Within 100 km

Other earthquakes nearby this year

Mag.	Where	When (ET)	Depth	Felt
5.5	122 km SW of Adak, Alaska · tsunami flag · PAGER green	Sep 21, 5:30 AM 390 d ago	30 km	4 reports
5.0	212 km WSW of Adak, Alaska · PAGER green	Jun 18, 9:58 AM 120 d ago	31 km	–
5.0	209 km WSW of Adak, Alaska	Apr 18, 9:15 AM 181 d ago	38 km	–
4.9	204 km WSW of Adak, Alaska	Jun 13, 7:24 AM 125 d ago	48 km	–
4.9	71 km SSW of Adak, Alaska	Oct 20, 2:45 PM 361 d ago	37 km	2 reports
4.6	181 km WSW of Adak, Alaska	Apr 5, 5:19 AM 194 d ago	35 km	–
4.6	137 km SW of Adak, Alaska	Feb 17, 6:12 PM 241 d ago	10 km	–
4.5	142 km WSW of Adak, Alaska	Jan 19, 7:32 PM 270 d ago	35 km	–
4.5	240 km WSW of Adak, Alaska	Oct 11, 9:51 AM 370 d ago	35 km	–
4.4	140 km WSW of Adak, Alaska	Nov 27, 11:32 PM 323 d ago	48 km	–
4.3	122 km SW of Adak, Alaska	Jul 11, 2:41 AM 98 d ago	35 km	–
4.3	124 km SW of Adak, Alaska	Nov 21, 1:49 PM 329 d ago	46 km	–

FAQ

About this earthquake

How strong was the 149 km WSW of Adak, Alaska earthquake?

Magnitude 5.1 (mwr), moderate – felt widely, some damage to weak buildings. Depth 37 km. Strongest estimated shaking: intensity 5.3 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.