Alaska earthquakes

M4.8 earthquake 107 km WSW of Adak, Alaska

A magnitude 4.8 earthquake struck 107 km WSW of Adak, Alaska on Sat, Mar 8, 1997, 6:50 PM HAST (04:50 UTC), 56 km (35 mi) below the surface.

A larger quake followed: M5.5 115 km WSW of Adak, Alaska. This one was a foreshock.

More in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
4.8 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1997-03-09 04:50:48 UTC
Depth
55.7 km (34.6 mi), shallow
Epicenter
51.450° N, 178.032° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

What happened

The USGS’s account of the effects of this earthquake.

Felt (III) on Adak.

From the USGS event page for usp0007yj2. U.S. Geological Survey text and figures are in the public domain.

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
CONSTRAINED_BY_DEPTH_PHASES

Nearby

Within 100 km, magnitude 1.8 and up: 14 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 4.242 km W of Adak, Alaska · 10798 days ago · 64 km deep · 67 km away
  2. 4.456 km SSW of Adak, Alaska · 10794 days ago · 33 km deep · 78 km away
  3. 4.2194 km WSW of Adak, Alaska · 10786 days ago · 33 km deep · 86 km away
  4. 4.1163 km WSW of Adak, Alaska · 10782 days ago · 33 km deep · 56 km away
  5. 4.8112 km WSW of Adak, Alaska · 10782 days ago · 33 km deep · 10 km away
  6. 5.5115 km WSW of Adak, Alaska · 10776 days ago · 33 km deep · 10 km away
  7. 4.129 km S of Adak, Alaska · 10756 days ago · 64 km deep · 94 km away
  8. 3.259 km S of Adak, Alaska · 10753 days ago · 33 km deep · 98 km away
  9. 4.796 km SSW of Adak, Alaska · 10746 days ago · 33 km deep · 67 km away
  10. 4.6106 km SSW of Adak, Alaska · 10746 days ago · 33 km deep · 74 km away
  11. 3.8193 km WSW of Adak, Alaska · 10745 days ago · 33 km deep · 87 km away
  12. 4.4194 km WSW of Adak, Alaska · 10745 days ago · 33 km deep · 87 km away
  13. 4.9184 km WSW of Adak, Alaska · 10745 days ago · 33 km deep · 78 km away
  14. 4.2196 km WSW of Adak, Alaska · 10745 days ago · 33 km deep · 90 km away

Before

  1. 4.8140 km WSW of Adak, Alaska · 10806 days ago · 33 km deep · 35 km away
  2. 3.3182 km WSW of Adak, Alaska · 10813 days ago · 33 km deep · 75 km away
  3. 4.192 km SSW of Adak, Alaska · 10815 days ago · 33 km deep · 90 km away
  4. 3.793 km WSW of Adak, Alaska · 10815 days ago · 33 km deep · 15 km away
  5. 3.298 km W of Adak, Alaska · 10818 days ago · 33 km deep · 36 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0007yj2. Read Thu, Oct 1, 2026, 10:19 AM UTC.