Alaska earthquakes

M2.7 earthquake 56 km SW of Cantwell, Alaska

A magnitude 2.7 earthquake struck 56 km SW of Cantwell, Alaska on Thu, Dec 17, 1987, 12:35 AM AKST (09:35 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M3.6 33 km SE of Denali National Park, Alaska. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
2.7 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1987-12-17 09:35:56 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
63.054° N, 149.781° 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

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 3.124 km ESE of Denali National Park, Alaska · 14167 days ago · 33 km deep · 87 km away
  2. 3.061 km N of Petersville, Alaska · 14151 days ago · 130 km deep · 58 km away
  3. 3.145 km NW of Petersville, Alaska · 14151 days ago · 144 km deep · 85 km away
  4. 2.033 km E of Chase, Alaska · 14150 days ago · -3 km deep · 72 km away
  5. 2.168 km ENE of Susitna North, Alaska · 14150 days ago · 16 km deep · 91 km away
  6. 3.633 km SE of Denali National Park, Alaska · 14144 days ago · 33 km deep · 80 km away
  7. 3.454 km NNE of Petersville, Alaska · 14143 days ago · 152 km deep · 34 km away
  8. 2.163 km SSE of Cantwell, Alaska · 14142 days ago · 31 km deep · 78 km away
  9. 2.581 km N of Chickaloon, Alaska · 14140 days ago · 70 km deep · 95 km away
  10. 2.323 km NE of Chase, Alaska · 14133 days ago · 15 km deep · 53 km away
  11. 3.215 km SW of Petersville, Alaska · 14130 days ago · 86 km deep · 95 km away
  12. 2.59 km NE of Susitna North, Alaska · 14117 days ago · 37 km deep · 92 km away
  13. 3.38 km E of Susitna North, Alaska · 14112 days ago · 43 km deep · 99 km away

Before

  1. 3.060 km N of Petersville, Alaska · 14169 days ago · 33 km deep · 53 km away
  2. 2.918 km SSE of Denali National Park, Alaska · 14182 days ago · 33 km deep · 96 km away
  3. 3.764 km ESE of Denali National Park, Alaska · 14194 days ago · 33 km deep · 47 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0003bbz. Read Thu, Oct 1, 2026, 7:35 PM UTC.