M4.6 earthquake 89 km NE of Adak, Alaska
A magnitude 4.6 earthquake struck 89 km NE of Adak, Alaska on Tue, Oct 22, 1996, 4:11 AM HADT (13:11 UTC), 102 km (63 mi) below the surface.
A larger quake followed: M5.2 85 km E of Adak, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1996-10-22 13:11:05 UTC
- Depth
- 102.1 km (63.4 mi), intermediate-depth
- Epicenter
- 52.451° N, 175.733° W
- Region
- Alaska
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 4.6 | mb, body-wave | USGS National Earthquake Information Center | Preferred · Reviewed · 28 stations |
| 4.6 | mb, body-wave | Alaska Earthquake Center | Preliminary |
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Depth from
- CONSTRAINED_BY_DEPTH_PHASES
Nearby
Within 100 km, magnitude 1.6 and up: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.285 km E of Adak, Alaska · 10932 days ago · 33 km deep · 75 km away
- 5.033 km SE of Adak, Alaska · 10905 days ago · 48 km deep · 91 km away
- 3.991 km SW of Atka, Alaska · 10893 days ago · 33 km deep · 93 km away
- 4.726 km ESE of Adak, Alaska · 10880 days ago · 68 km deep · 79 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0007rsj (also filed as ak996dlqvqg1). Read Sun, Oct 4, 2026, 6:17 AM UTC.