Washington earthquakes

M2.8 earthquake 1 km ENE of Keyport, Washington

A magnitude 2.8 earthquake struck 1 km ENE of Keyport, Washington on Thu, Oct 21, 1971, 3:02 AM PDT (10:02 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M3.0 5 km N of Bangor Trident Base, Washington. This one was a foreshock.

Keyport forecastMore in Washington

Map

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

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The earthquake

Magnitude
2.8 (md), micro
Local time
UTC
1971-10-21 10:02:00 UTC
Depth
20.6 km (12.8 mi), shallow
Epicenter
47.706° N, 122.605° W
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.

Location uncertainty
About 1.0 km horizontally, 1.6 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
153°
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 22 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 1.72 km NNE of Bonney Lake, Washington · 20061 days ago · 10 km deep · 65 km away
  2. 2.15 km WNW of Wauna, Washington · 20059 days ago · 19 km deep · 36 km away
  3. 1.80 km ENE of Beaux Arts Village, Washington · 20059 days ago · 21 km deep · 34 km away
  4. 2.30 km NE of Beaux Arts Village, Washington · 20055 days ago · 20 km deep · 33 km away
  5. 3.05 km N of Bangor Trident Base, Washington · 20053 days ago · 54 km deep · 12 km away
  6. 2.413 km NW of Ault Field, Washington · 20051 days ago · 31 km deep · 81 km away
  7. 3.11 km ESE of Swede Heaven, Washington · 20039 days ago · 9 km deep · 92 km away
  8. 1.74 km ESE of Issaquah, Washington · 20038 days ago · 19 km deep · 51 km away
  9. 2.80 km ESE of Mukilteo, Washington · 20035 days ago · 62 km deep · 35 km away
  10. 1.60 km NW of Wilburton, Washington · 20030 days ago · 19 km deep · 33 km away
  11. 1.51 km SW of Mountlake Terrace, Washington · 20030 days ago · 27 km deep · 23 km away
  12. 1.83 km NNE of Bonney Lake, Washington · 20023 days ago · 21 km deep · 65 km away
  13. 1.93 km S of Des Moines, Washington · 20022 days ago · 9 km deep · 43 km away
  14. 1.70 km NE of White Center, Washington · 20016 days ago · 25 km deep · 28 km away
  15. 2.02 km SSE of Des Moines, Washington · 20015 days ago · 8 km deep · 42 km away
  16. 1.91 km SSE of Kingsgate, Washington · 20014 days ago · 14 km deep · 32 km away
  17. 2.613 km E of Lake Marcel-Stillwater, Washington · 20014 days ago · 11 km deep · 65 km away
  18. 2.26 km S of Seabeck, Washington · 20012 days ago · 21 km deep · 21 km away
  19. 2.00 km WNW of Kingston, Washington · 20008 days ago · 10 km deep · 13 km away
  20. 2.60 km N of Mercer Island, Washington · 20006 days ago · 20 km deep · 32 km away
  21. 2.39 km ENE of Snoqualmie, Washington · 20005 days ago · 9 km deep · 68 km away
  22. 2.32 km ENE of Snoqualmie, Washington · 20002 days ago · 12 km deep · 63 km away

Before

  1. 2.42 km WSW of Suquamish, Washington · 20065 days ago · 18 km deep · 3 km away
  2. 2.112 km NW of Port Townsend, Washington · 20070 days ago · 28 km deep · 58 km away
  3. 2.11 km WNW of Federal Way, Washington · 20071 days ago · 28 km deep · 46 km away
  4. 1.81 km SSW of Wilderness Rim, Washington · 20074 days ago · 20 km deep · 69 km away
  5. 2.1Washington · 20075 days ago · 21 km deep · 68 km away
  6. 3.220 km NNE of Jamestown, Washington · 20077 days ago · 23 km deep · 69 km away
  7. 1.80 km NE of Beaux Arts Village, Washington · 20078 days ago · 20 km deep · 33 km away
  8. 2.30 km NE of Mercer Island, Washington · 20078 days ago · 20 km deep · 33 km away
  9. 1.70 km NNE of Beaux Arts Village, Washington · 20079 days ago · 20 km deep · 33 km away
  10. 3.09 km E of Oak Bay, Canada · 20088 days ago · 30 km deep · 92 km away
  11. 2.24 km SE of Riverbend, Washington · 20090 days ago · -1 km deep · 74 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10851768. Read Wed, Sep 23, 2026, 3:22 AM UTC.