Alaska earthquakes

M3.7 earthquake 287 km WSW of Adak, Alaska

A magnitude 3.7 earthquake struck 287 km WSW of Adak, Alaska on Mon, Dec 22, 1997, 1:59 PM GMT+12 (01:59 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.6 Rat Islands, Aleutian Islands, Alaska. This one was a foreshock.

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

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The earthquake

Magnitude
3.7 (mb, body-wave), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1997-12-22 01:59:15 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.214° N, 179.363° 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.

How well it is located

Reviewed by a seismologist.

Depth from
OPERATOR_ASSIGNED

Nearby

Within 100 km, magnitude 1.5 and up: 15 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 3.1260 km W of Adak, Alaska · 10507 days ago · 33 km deep · 51 km away
  2. 5.6Rat Islands, Aleutian Islands, Alaska · 10506 days ago · 33 km deep · 40 km away
  3. 4.2Rat Islands, Aleutian Islands, Alaska · 10503 days ago · 33 km deep · 34 km away
  4. 3.5Rat Islands, Aleutian Islands, Alaska · 10500 days ago · 33 km deep · 80 km away
  5. 4.5278 km WSW of Adak, Alaska · 10494 days ago · 33 km deep · 18 km away
  6. 4.1282 km WSW of Adak, Alaska · 10494 days ago · 33 km deep · 6 km away
  7. 5.0278 km WSW of Adak, Alaska · 10494 days ago · 33 km deep · 10 km away
  8. 5.4273 km WSW of Adak, Alaska · 10494 days ago · 33 km deep · 14 km away
  9. 4.0261 km W of Adak, Alaska · 10494 days ago · 33 km deep · 49 km away
  10. 4.0281 km WSW of Adak, Alaska · 10494 days ago · 33 km deep · 53 km away
  11. 4.5216 km WSW of Adak, Alaska · 10484 days ago · 33 km deep · 71 km away
  12. 4.7Rat Islands, Aleutian Islands, Alaska · 10468 days ago · 43 km deep · 50 km away
  13. 4.1210 km W of Adak, Alaska · 10462 days ago · 99 km deep · 87 km away
  14. 4.4Rat Islands, Aleutian Islands, Alaska · 10461 days ago · 64 km deep · 47 km away
  15. 3.6195 km W of Adak, Alaska · 10457 days ago · 100 km deep · 94 km away

Before

  1. 4.2Rat Islands, Aleutian Islands, Alaska · 10513 days ago · 33 km deep · 32 km away
  2. 4.6Rat Islands, Aleutian Islands, Alaska · 10514 days ago · 33 km deep · 35 km away
  3. 4.3203 km WSW of Adak, Alaska · 10515 days ago · 33 km deep · 84 km away
  4. 4.2Rat Islands, Aleutian Islands, Alaska · 10515 days ago · 33 km deep · 30 km away
  5. 4.6Rat Islands, Aleutian Islands, Alaska · 10515 days ago · 33 km deep · 48 km away
  6. 5.5Rat Islands, Aleutian Islands, Alaska · 10516 days ago · 33 km deep · 26 km away
  7. 4.1Rat Islands, Aleutian Islands, Alaska · 10516 days ago · 33 km deep · 36 km away
  8. 4.3Rat Islands, Aleutian Islands, Alaska · 10516 days ago · 33 km deep · 17 km away
  9. 6.6Rat Islands, Aleutian Islands, Alaska · 10516 days ago · 20 km deep · 34 km away
  10. 5.0190 km WSW of Adak, Alaska · 10523 days ago · 33 km deep · 99 km away
  11. 3.9190 km W of Adak, Alaska · 10537 days ago · 33 km deep · 98 km away
  12. 4.7194 km WSW of Adak, Alaska · 10540 days ago · 33 km deep · 93 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0008d0q. Read Fri, Oct 2, 2026, 2:41 AM UTC.