M4.0 earthquake 77 km SSE of Adak, Alaska
A magnitude 4.0 earthquake struck 77 km SSE of Adak, Alaska on Mon, Nov 2, 1998, 6:32 PM HAST (04:32 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.2 41 km NE 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
- 4.0 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1998-11-03 04:32:22 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.280° N, 176.043° 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 5 in the 30 days before it.
After
- 5.241 km NE of Adak, Alaska · 10195 days ago · 35 km deep · 91 km away
- 4.324 km SW of Adak, Alaska · 10191 days ago · 58 km deep · 74 km away
- 3.780 km SW of Atka, Alaska · 10189 days ago · 33 km deep · 82 km away
- 3.8Andreanof Islands, Aleutian Islands, Alaska · 10148 days ago · 33 km deep · 18 km away
Before
- 4.673 km SSE of Adak, Alaska · 10196 days ago · 33 km deep · 6 km away
- 5.370 km SSE of Adak, Alaska · 10196 days ago · 33 km deep · 13 km away
- 4.523 km W of Adak, Alaska · 10209 days ago · 60 km deep · 90 km away
- 4.342 km S of Adak, Alaska · 10215 days ago · 67 km deep · 51 km away
- 4.731 km SW of Adak, Alaska · 10217 days ago · 58 km deep · 74 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0008xhe. Read Sat, Oct 3, 2026, 6:48 AM UTC.