M4.2 earthquake 57 km SE of Adak, Alaska
A magnitude 4.2 earthquake struck 57 km SE of Adak, Alaska on Sun, Apr 19, 1998, 9:56 AM HADT (18:56 UTC), 49 km (31 mi) below the surface.
A larger quake followed: M4.6 35 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
- 4.2 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1998-04-19 18:56:35 UTC
- Depth
- 49.4 km (30.7 mi), shallow
- Epicenter
- 51.557° N, 175.982° 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
- FROM_LOCATION
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
- 4.635 km SW of Adak, Alaska · 10388 days ago · 40 km deep · 68 km away
- 4.070 km SSW of Atka, Alaska · 10384 days ago · 33 km deep · 94 km away
- 3.370 km S of Adak, Alaska · 10376 days ago · 33 km deep · 48 km away
- 4.277 km WSW of Atka, Alaska · 10368 days ago · 33 km deep · 64 km away
- 4.158 km SSE of Adak, Alaska · 10353 days ago · 33 km deep · 29 km away
- 4.322 km SE of Adak, Alaska · 10345 days ago · 60 km deep · 35 km away
- 4.293 km SSW of Adak, Alaska · 10341 days ago · 33 km deep · 86 km away
- 4.551 km ESE of Adak, Alaska · 10337 days ago · 47 km deep · 18 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0008kk3. Read Fri, Oct 2, 2026, 6:48 AM UTC.