Alaska earthquakes

M1.5 earthquake 152 km E of McCarthy, Alaska

A magnitude 1.5 earthquake struck 152 km E of McCarthy, Alaska on Thu, Aug 20, 2020, 9:51 PM AKDT (05:51 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.1 143 km WNW of Haines Junction, Canada. This one was a foreshock.

Yakutat forecastMore in Alaska

Map

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

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The earthquake

Magnitude
1.5 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2020-08-21 05:51:36 UTC
Depth
6.0 km (3.7 mi), shallow
Epicenter
61.373° N, 140.079° 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.

Stations used
41

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 1.768 km ESE of McCarthy, Alaska · 2235 days ago · 2 km deep · 95 km away
  2. 1.5101 km ESE of McCarthy, Alaska · 2233 days ago · 6 km deep · 54 km away
  3. 1.9145 km WNW of Haines Junction, Canada · 2232 days ago · 2 km deep · 25 km away
  4. 3.1143 km WNW of Haines Junction, Canada · 2231 days ago · 10 km deep · 25 km away
  5. 1.6146 km WNW of Haines Junction, Canada · 2231 days ago · 1 km deep · 25 km away
  6. 2.173 km E of McCarthy, Alaska · 2231 days ago · 1 km deep · 80 km away
  7. 1.5104 km E of McCarthy, Alaska · 2226 days ago · 3 km deep · 47 km away
  8. 1.6119 km ESE of McCarthy, Alaska · 2205 days ago · 5 km deep · 38 km away
  9. 1.5106 km N of Yakutat, Alaska · 2194 days ago · 12 km deep · 98 km away
  10. 1.5150 km E of McCarthy, Alaska · 2187 days ago · 3 km deep · 18 km away
  11. 1.7Southern Alaska · 2179 days ago · 6 km deep · 73 km away

Before

  1. 2.1123 km NNW of Yakutat, Alaska · 2236 days ago · 8 km deep · 99 km away
  2. 1.8129 km SSE of Alcan Border, Alaska · 2237 days ago · 2 km deep · 33 km away
  3. 1.7143 km SSE of Alcan Border, Alaska · 2238 days ago · 3 km deep · 24 km away
  4. 1.9120 km SE of McCarthy, Alaska · 2244 days ago · 3 km deep · 86 km away
  5. 1.9134 km WNW of Haines Junction, Canada · 2257 days ago · 3 km deep · 20 km away
  6. 1.997 km E of McCarthy, Alaska · 2261 days ago · 2 km deep · 58 km away
  7. 1.5129 km WNW of Haines Junction, Canada · 2265 days ago · 9 km deep · 26 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak020ar31dw6. Read Sun, Oct 4, 2026, 6:57 PM UTC.