M3.3 earthquake 70 km S of Adak, Alaska
A magnitude 3.3 earthquake struck 70 km S of Adak, Alaska on Tue, May 5, 1998, 11:40 AM HADT (20:40 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.5 51 km ESE 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
- 3.3 (mb, body-wave), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1998-05-05 20:40:23 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.248° N, 176.468° 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: 4 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.158 km SSE of Adak, Alaska · 10353 days ago · 33 km deep · 20 km away
- 4.322 km SE of Adak, Alaska · 10345 days ago · 60 km deep · 53 km away
- 4.293 km SSW of Adak, Alaska · 10342 days ago · 33 km deep · 38 km away
- 4.551 km ESE of Adak, Alaska · 10338 days ago · 47 km deep · 64 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0008mhk. Read Fri, Oct 2, 2026, 6:20 PM UTC.