Washington earthquakes

M1.9 earthquake 4 km NNE of Seattle, Washington

A magnitude 1.9 earthquake struck 4 km NNE of Seattle, Washington on Sun, Sep 19, 1971, 9:35 PM PDT (04:35 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M2.2 4 km SE of Riverbend, Washington. 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
1.9 (md), micro
Local time
UTC
1971-09-20 04:35:07 UTC
Depth
19.1 km (11.9 mi), shallow
Epicenter
47.647° N, 122.310° 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 0.8 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
169°
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 20 in the 60 days after this one and 17 in the 30 days before it.

After

  1. 2.24 km SE of Riverbend, Washington · 20090 days ago · -1 km deep · 51 km away
  2. 1.70 km NNE of Beaux Arts Village, Washington · 20078 days ago · 20 km deep · 11 km away
  3. 2.30 km NE of Mercer Island, Washington · 20078 days ago · 20 km deep · 11 km away
  4. 1.80 km NE of Beaux Arts Village, Washington · 20078 days ago · 20 km deep · 11 km away
  5. 3.220 km NNE of Jamestown, Washington · 20077 days ago · 23 km deep · 85 km away
  6. 2.1Washington · 20074 days ago · 21 km deep · 46 km away
  7. 1.81 km SSW of Wilderness Rim, Washington · 20074 days ago · 20 km deep · 46 km away
  8. 2.11 km WNW of Federal Way, Washington · 20071 days ago · 28 km deep · 35 km away
  9. 2.112 km NW of Port Townsend, Washington · 20069 days ago · 28 km deep · 74 km away
  10. 2.42 km WSW of Suquamish, Washington · 20064 days ago · 18 km deep · 22 km away
  11. 2.81 km ENE of Keyport, Washington · 20060 days ago · 21 km deep · 23 km away
  12. 1.72 km NNE of Bonney Lake, Washington · 20060 days ago · 10 km deep · 50 km away
  13. 2.15 km WNW of Wauna, Washington · 20059 days ago · 19 km deep · 41 km away
  14. 1.80 km ENE of Beaux Arts Village, Washington · 20058 days ago · 21 km deep · 11 km away
  15. 2.30 km NE of Beaux Arts Village, Washington · 20054 days ago · 20 km deep · 11 km away
  16. 3.05 km N of Bangor Trident Base, Washington · 20052 days ago · 54 km deep · 34 km away
  17. 2.413 km NW of Ault Field, Washington · 20051 days ago · 31 km deep · 94 km away
  18. 3.11 km ESE of Swede Heaven, Washington · 20039 days ago · 9 km deep · 83 km away
  19. 1.74 km ESE of Issaquah, Washington · 20038 days ago · 19 km deep · 28 km away
  20. 2.80 km ESE of Mukilteo, Washington · 20035 days ago · 62 km deep · 33 km away

Before

  1. 1.510 km NW of Brinnon, Washington · 20092 days ago · -1 km deep · 52 km away
  2. 2.43 km E of Pacific, Washington · 20099 days ago · 14 km deep · 43 km away
  3. 2.30 km NW of Beaux Arts Village, Washington · 20101 days ago · 21 km deep · 10 km away
  4. 2.01 km NNE of Mercer Island, Washington · 20102 days ago · 20 km deep · 10 km away
  5. 1.92 km SE of Lake Marcel-Stillwater, Washington · 20102 days ago · 23 km deep · 32 km away
  6. 3.50 km ESE of Mercer Island, Washington · 20102 days ago · 20 km deep · 11 km away
  7. 2.75 km NE of Woods Creek, Washington · 20103 days ago · 18 km deep · 45 km away
  8. 2.14 km NE of Ashford, Washington · 20105 days ago · 9 km deep · 98 km away
  9. 2.25 km E of Coupeville, Washington · 20105 days ago · 4 km deep · 66 km away
  10. 2.618 km N of Jamestown, Washington · 20107 days ago · 49 km deep · 94 km away
  11. 2.61 km SE of Burley, Washington · 20112 days ago · 15 km deep · 35 km away
  12. 2.68 km NNE of Hoodsport, Washington · 20116 days ago · 44 km deep · 62 km away
  13. 1.96 km WSW of Port Hadlock-Irondale, Washington · 20116 days ago · 21 km deep · 59 km away
  14. 1.87 km SE of Snoqualmie Pass, Washington · 20116 days ago · 0 km deep · 81 km away
  15. 2.55 km NE of Ashford, Washington · 20117 days ago · 8 km deep · 98 km away
  16. 1.77 km SE of Snoqualmie Pass, Washington · 20118 days ago · 0 km deep · 81 km away
  17. 2.65 km NNE of Hoodsport, Washington · 20118 days ago · 40 km deep · 64 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10839763. Read Tue, Sep 22, 2026, 4:16 PM UTC.