19 Jul 2026, 21:43 UTC · Jul 19, 5:43 PM ET

M3.7 earthquake 20 km SE of Adak, Alaska

A magnitude 3.7 earthquake struck 20 km SE of Adak, Alaska at Jul 19, 5:43 PM ET, 79 km deep, minor – felt by people near the epicenter.

under 33–44–55–66+

Magnitude	3.7 mb
Time	19 Jul 2026, 21:43 UTC
Location	51.747°, -176.420° – 20 km SE of Adak, Alaska
Depth	79.4 km
Felt reports	0
Max. estimated intensity (MMI)	3.0
USGS event	us7000t32x

Within 100 km

Other earthquakes nearby this year

Mag.	Where	When (ET)	Depth	Felt
5.5	67 km SSW of Adak, Alaska · PAGER green	Nov 23, 3:21 AM 328 d ago	33 km	3 reports
5.3	39 km E of Adak, Alaska · tsunami flag	Jan 24, 4:25 PM 265 d ago	61 km	3 reports
5.1	93 km SSE of Adak, Alaska	Jul 23, 9:03 PM 85 d ago	10 km	–
5.1	40 km E of Adak, Alaska	Feb 1, 7:43 AM 257 d ago	62 km	1 report
5.0	74 km NE of Adak, Alaska	Feb 10, 6:09 PM 248 d ago	157 km	1 report
4.9	43 km E of Adak, Alaska	May 27, 8:25 PM 142 d ago	64 km	1 report
4.9	57 km SSE of Adak, Alaska	Dec 15, 1:03 PM 305 d ago	42 km	6 reports
4.9	47 km SE of Adak, Alaska	Oct 25, 6:13 AM 356 d ago	57 km	1 report
4.9	71 km SSW of Adak, Alaska	Oct 20, 2:45 PM 361 d ago	37 km	2 reports
4.5	82 km NNE of Adak, Alaska	Jul 7, 2:07 PM 101 d ago	174 km	–
4.5	92 km SSE of Adak, Alaska	Jun 4, 1:50 PM 134 d ago	31 km	–
4.5	27 km S of Adak, Alaska	Mar 24, 12:43 PM 206 d ago	54 km	1 report

FAQ

About this earthquake

How strong was the 20 km SE of Adak, Alaska earthquake?

Magnitude 3.7 (mb), minor – felt by people near the epicenter. Depth 79 km. Strongest estimated shaking: intensity 3.0 on the Modified Mercalli scale.

Was it felt?

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

Were there aftershocks?

1 earthquakes within 100 km in the following two weeks are in our records, the strongest M5.1.

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.