Alaska earthquakes

M4.1 earthquake 175 km WSW of Adak, Alaska

A magnitude 4.1 earthquake struck 175 km WSW of Adak, Alaska on Fri, Jul 18, 1997, 12:19 AM HADT (09:19 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.9 Andreanof Islands, Aleutian Islands, 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
4.1 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1997-07-18 09:19:57 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.158° N, 178.889° 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: 9 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 4.8185 km WSW of Adak, Alaska · 10662 days ago · 33 km deep · 30 km away
  2. 4.1145 km WSW of Adak, Alaska · 10661 days ago · 33 km deep · 30 km away
  3. 3.9141 km WSW of Adak, Alaska · 10631 days ago · 33 km deep · 34 km away
  4. 4.492 km SW of Adak, Alaska · 10631 days ago · 33 km deep · 89 km away
  5. 4.1134 km WSW of Adak, Alaska · 10626 days ago · 33 km deep · 44 km away
  6. 4.582 km SW of Adak, Alaska · 10625 days ago · 33 km deep · 94 km away
  7. 4.7139 km SW of Adak, Alaska · 10624 days ago · 33 km deep · 41 km away
  8. 4.3224 km WSW of Adak, Alaska · 10622 days ago · 60 km deep · 60 km away
  9. 4.9Andreanof Islands, Aleutian Islands, Alaska · 10611 days ago · 53 km deep · 53 km away

Before

  1. 4.3167 km W of Adak, Alaska · 10671 days ago · 33 km deep · 78 km away
  2. 4.1152 km WSW of Adak, Alaska · 10671 days ago · 33 km deep · 25 km away
  3. 4.7189 km WSW of Adak, Alaska · 10677 days ago · 33 km deep · 30 km away
  4. 3.4187 km WSW of Adak, Alaska · 10678 days ago · 33 km deep · 22 km away
  5. 4.5140 km WSW of Adak, Alaska · 10679 days ago · 33 km deep · 39 km away
  6. 5.9146 km WSW of Adak, Alaska · 10679 days ago · 33 km deep · 32 km away
  7. 5.1144 km WSW of Adak, Alaska · 10683 days ago · 33 km deep · 36 km away
  8. 4.8198 km WSW of Adak, Alaska · 10684 days ago · 33 km deep · 45 km away
  9. 4.1195 km WSW of Adak, Alaska · 10689 days ago · 33 km deep · 25 km away
  10. 5.1127 km WSW of Adak, Alaska · 10695 days ago · 33 km deep · 56 km away
  11. 4.6196 km WSW of Adak, Alaska · 10699 days ago · 33 km deep · 35 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp000850j. Read Sat, Oct 3, 2026, 5:36 PM UTC.