4 Sept 2026, 16:33 UTC · Sep 4, 12:33 PM ET

M3.3 earthquake Rat Islands, Aleutian Islands, Alaska

A magnitude 3.3 earthquake struck Rat Islands, Aleutian Islands, Alaska at Sep 4, 12:33 PM ET, 10 km deep, minor – felt by people near the epicenter.

M3.3 Rat Islands, Aleutian Islands, AlaskaM3.9 299 km WSW of Adak, AlaskaM3.9 Rat Islands, Aleutian Islands, AlaskaM3.9 249 km WSW of Adak, AlaskaM4.0 Rat Islands, Aleutian Islands, AlaskaM4.0 294 km WSW of Adak, AlaskaM4.3 293 km WSW of Adak, AlaskaM4.4 282 km WSW of Adak, AlaskaM4.4 255 km WSW of Adak, AlaskaM4.6 Rat Islands, Aleutian Islands, AlaskaM4.7 295 km WSW of Adak, AlaskaM5.8 296 km WSW of Adak, AlaskaM6.1 Rat Islands, Aleutian Islands, Alaska
under 33–44–55–66+
Magnitude3.3 ml
Time4 Sept 2026, 16:33 UTC
Location50.170°, 179.422° – Rat Islands, Aleutian Islands, Alaska
Depth10.0 km
Felt reports0
Max. estimated intensity (MMI)1.5
USGS eventus7000tecs
Within 100 km

Other earthquakes nearby this year

Mag.WhereWhen (ET)DepthFelt
6.1Rat Islands, Aleutian Islands, AlaskaMay 9, 12:42 AM
161 d ago
16 km–
5.8296 km WSW of Adak, Alaska · PAGER greenMay 9, 12:42 AM
161 d ago
37 km–
4.7295 km WSW of Adak, AlaskaMay 8, 4:03 PM
161 d ago
35 km–
4.6Rat Islands, Aleutian Islands, AlaskaSep 27, 3:48 AM
20 d ago
47 km–
4.4282 km WSW of Adak, AlaskaSep 26, 1:01 PM
20 d ago
10 km–
4.4255 km WSW of Adak, AlaskaMar 5, 7:59 AM
225 d ago
10 km–
4.3293 km WSW of Adak, Alaska · PAGER greenMay 10, 3:28 AM
160 d ago
25 km–
4.0Rat Islands, Aleutian Islands, AlaskaAug 19, 10:45 PM
58 d ago
10 km–
4.0294 km WSW of Adak, AlaskaJan 29, 7:56 AM
260 d ago
10 km–
3.9299 km WSW of Adak, AlaskaMay 12, 11:37 PM
157 d ago
29 km–
3.9Rat Islands, Aleutian Islands, AlaskaMar 4, 1:08 AM
227 d ago
10 km–
3.9249 km WSW of Adak, AlaskaFeb 23, 5:58 AM
235 d ago
9 km–
FAQ

About this earthquake

How strong was the Rat Islands, Aleutian Islands, Alaska earthquake?

Magnitude 3.3 (ml), minor – felt by people near the epicenter. Depth 10 km. Strongest estimated shaking: intensity 1.5 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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M3.3 earthquake Rat Islands, Aleutian Islands, Alaska