Alaska earthquakes

M3.0 earthquake 292 km SW of Adak, Alaska

A magnitude 3.0 earthquake struck 292 km SW of Adak, Alaska on Thu, Jun 18, 2020, 11:02 PM GMT-12 (11:02 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M3.6 south of the Aleutian Islands. 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
3.0 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2020-06-19 11:02:12 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
50.207° N, 179.854° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
3.0ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.128 · 8 stations
2.6ML, local (Richter)Alaska Earthquake CenterPreliminary

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 2.9 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.13
Depth from
Operator assigned
Station coverage gap
279°, poorly surrounded by stations
Stations used
21

Nearby

Within 100 km, magnitude 1.5 and up: 20 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 1.6237 km WSW of Adak, Alaska · 2293 days ago · 13 km deep · 94 km away
  2. 3.3293 km SW of Adak, Alaska · 2293 days ago · 10 km deep · 14 km away
  3. 2.5238 km WSW of Adak, Alaska · 2292 days ago · 14 km deep · 96 km away
  4. 2.1243 km WSW of Adak, Alaska · 2282 days ago · 11 km deep · 84 km away
  5. 1.9237 km WSW of Adak, Alaska · 2280 days ago · 13 km deep · 90 km away
  6. 2.9238 km WSW of Adak, Alaska · 2280 days ago · 14 km deep · 100 km away
  7. 2.7284 km SW of Adak, Alaska · 2278 days ago · 10 km deep · 11 km away
  8. 1.9Rat Islands, Aleutian Islands, Alaska · 2266 days ago · 7 km deep · 16 km away
  9. 2.1284 km SW of Adak, Alaska · 2266 days ago · 15 km deep · 8 km away
  10. 1.8278 km SW of Adak, Alaska · 2266 days ago · 29 km deep · 15 km away
  11. 2.1284 km SW of Adak, Alaska · 2266 days ago · 7 km deep · 43 km away
  12. 2.7244 km WSW of Adak, Alaska · 2265 days ago · 17 km deep · 86 km away
  13. 1.9239 km WSW of Adak, Alaska · 2262 days ago · 13 km deep · 97 km away
  14. 1.7237 km WSW of Adak, Alaska · 2259 days ago · 26 km deep · 93 km away
  15. 2.4Rat Islands, Aleutian Islands, Alaska · 2254 days ago · 26 km deep · 66 km away
  16. 2.3266 km SW of Adak, Alaska · 2254 days ago · 20 km deep · 52 km away
  17. 2.1217 km WSW of Adak, Alaska · 2252 days ago · 10 km deep · 93 km away
  18. 2.6260 km WSW of Adak, Alaska · 2249 days ago · 10 km deep · 71 km away
  19. 3.6south of the Aleutian Islands · 2247 days ago · 10 km deep · 27 km away
  20. 2.6220 km WSW of Adak, Alaska · 2246 days ago · 16 km deep · 99 km away

Before

  1. 2.8252 km SW of Adak, Alaska · 2297 days ago · 10 km deep · 60 km away
  2. 2.9245 km SW of Adak, Alaska · 2297 days ago · 10 km deep · 49 km away
  3. 3.2292 km SW of Adak, Alaska · 2304 days ago · 10 km deep · 7 km away
  4. 1.5242 km WSW of Adak, Alaska · 2306 days ago · 26 km deep · 89 km away
  5. 2.7248 km SW of Adak, Alaska · 2307 days ago · 21 km deep · 77 km away
  6. 2.3Rat Islands, Aleutian Islands, Alaska · 2308 days ago · 30 km deep · 70 km away
  7. 2.1240 km WSW of Adak, Alaska · 2316 days ago · 8 km deep · 80 km away
  8. 2.4225 km WSW of Adak, Alaska · 2317 days ago · 7 km deep · 82 km away
  9. 2.5247 km WSW of Adak, Alaska · 2319 days ago · 10 km deep · 92 km away
  10. 2.5Rat Islands, Aleutian Islands, Alaska · 2319 days ago · 16 km deep · 34 km away
  11. 3.8220 km WSW of Adak, Alaska · 2324 days ago · 10 km deep · 80 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000aj7g (also filed as ak0207uzgkib). Read Thu, Oct 1, 2026, 7:58 PM UTC.