M4.8 earthquake 259 km W of Adak, Alaska
A magnitude 4.8 earthquake struck 259 km W of Adak, Alaska on Thu, Mar 22, 1984, 11:34 AM GMT+12 (23:34 UTC), 75 km (46 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1984-03-21 23:34:00 UTC
- Depth
- 74.7 km (46.4 mi), intermediate-depth
- Epicenter
- 51.522° N, 179.659° E
- 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 1.8 and up: 1 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00022vd. Read Sat, Oct 3, 2026, 11:42 AM UTC.