M3.8 earthquake 76 km SSW of Adak, Alaska
A magnitude 3.8 earthquake struck 76 km SSW of Adak, Alaska on Tue, Mar 31, 1998, 9:08 PM HAST (07:08 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.6 52 km SW 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
- 3.8 (mb, body-wave), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1998-04-01 07:08:53 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.298° N, 177.232° W
- Region
- Alaska
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
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
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.652 km SW of Adak, Alaska · 10394 days ago · 43 km deep · 31 km away
- 4.257 km SE of Adak, Alaska · 10393 days ago · 49 km deep · 91 km away
- 4.635 km SW of Adak, Alaska · 10388 days ago · 40 km deep · 41 km away
- 3.299 km SW of Adak, Alaska · 10384 days ago · 61 km deep · 32 km away
- 3.370 km S of Adak, Alaska · 10377 days ago · 33 km deep · 53 km away
- 4.2119 km WSW of Adak, Alaska · 10372 days ago · 33 km deep · 65 km away
- 4.3122 km SW of Adak, Alaska · 10366 days ago · 33 km deep · 56 km away
- 4.158 km SSE of Adak, Alaska · 10353 days ago · 33 km deep · 66 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0008jcd. Read Fri, Oct 2, 2026, 12:16 PM UTC.