M4.7 earthquake 142 km WSW of Adak, Alaska
A magnitude 4.7 earthquake struck 142 km WSW of Adak, Alaska on Sat, Oct 3, 1998, 4:41 PM HADT (01:41 UTC), 52 km (32 mi) below the surface.
A larger quake followed: M5.1 235 km WSW 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
- 4.7 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1998-10-04 01:41:15 UTC
- Depth
- 51.5 km (32.0 mi), shallow
- Epicenter
- 51.461° N, 178.577° 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.
Nearby
Within 100 km, magnitude 1.7 and up: 5 in the 60 days after this one and 8 in the 30 days before it.
After
- 4.4184 km WSW of Adak, Alaska · 10195 days ago · 33 km deep · 48 km away
- 5.1235 km WSW of Adak, Alaska · 10190 days ago · 33 km deep · 95 km away
- 4.5230 km WSW of Adak, Alaska · 10190 days ago · 33 km deep · 91 km away
- 4.7115 km SW of Adak, Alaska · 10173 days ago · 33 km deep · 42 km away
- 4.5139 km WSW of Adak, Alaska · 10172 days ago · 33 km deep · 15 km away
Before
- 4.6103 km WSW of Adak, Alaska · 10228 days ago · 33 km deep · 41 km away
- 5.4Andreanof Islands, Aleutian Islands, Alaska · 10229 days ago · 33 km deep · 29 km away
- 4.1146 km WSW of Adak, Alaska · 10230 days ago · 33 km deep · 13 km away
- 4.1130 km WSW of Adak, Alaska · 10230 days ago · 33 km deep · 31 km away
- 4.6154 km W of Adak, Alaska · 10240 days ago · 33 km deep · 42 km away
- 5.2116 km WSW of Adak, Alaska · 10240 days ago · 33 km deep · 28 km away
- 4.9182 km WSW of Adak, Alaska · 10246 days ago · 33 km deep · 41 km away
- 4.3178 km WSW of Adak, Alaska · 10246 days ago · 33 km deep · 38 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0008vy9. Read Sat, Oct 3, 2026, 10:52 AM UTC.