M5.2 earthquake 149 km S of Akhiok, Alaska
A magnitude 5.2 earthquake struck 149 km S of Akhiok, Alaska on Sun, Apr 21, 1985, 6:25 AM AKST (15:25 UTC), 33 km (21 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.2 (mb, body-wave), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1985-04-21 15:25:15 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 55.618° N, 154.515° 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 |
|---|---|---|---|
| 5.2 | mb, body-wave | USGS National Earthquake Information Center | Preferred · Reviewed · 52 stations |
| 5.5 | Mw, moment | ISC-GEM global catalog | Final · ±0.28 |
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
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.2 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.8136 km S of Akhiok, Alaska · 15138 days ago · 33 km deep · 13 km away
- 4.5130 km S of Akhiok, Alaska · 15138 days ago · 33 km deep · 19 km away
- 4.5131 km S of Akhiok, Alaska · 15138 days ago · 33 km deep · 18 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002e05 (also filed as iscgem528072). Read Thu, Oct 1, 2026, 8:01 PM UTC.