Washington earthquakes

M2.7 earthquake 6 km NNE of Port Townsend, Washington

A magnitude 2.7 earthquake struck 6 km NNE of Port Townsend, Washington on Sat, Dec 22, 1990, 1:15 AM PST (09:15 UTC), 53 km (33 mi) below the surface.

A larger quake followed: M2.8 5 km ENE of Deming, Washington. This one was a foreshock.

Port Townsend 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
2.7 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1990-12-22 09:15:03 UTC
Depth
52.8 km (32.8 mi), shallow
Epicenter
48.172° N, 122.733° W
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
2.7Md, durationPacific Northwest Seismic NetworkPreferred · Final · ±0.06 · 26 stations
2.7Md, durationUSGS National Earthquake Information CenterReviewed

What happened

The USGS’s account of the effects of this earthquake.

CL 2.7 (SEA).

From the USGS event page for uw10272218. U.S. Geological Survey text and figures are in the public domain.

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 0.7 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
33°
Stations used
37

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 16 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 2.66 km SW of Deming, Washington · 13063 days ago · -1 km deep · 76 km away
  2. 1.61 km NNW of Brier, Washington · 13061 days ago · 20 km deep · 54 km away
  3. 2.44 km NE of Blyn, Washington · 13050 days ago · 13 km deep · 21 km away
  4. 1.64 km WNW of Chico, Washington · 13049 days ago · 21 km deep · 61 km away
  5. 2.34 km SW of Anacortes, Washington · 13044 days ago · 23 km deep · 35 km away
  6. 1.54 km NW of Bryant, Washington · 13044 days ago · 9 km deep · 41 km away
  7. 1.92 km NE of Keyport, Washington · 13041 days ago · 14 km deep · 51 km away
  8. 2.33 km ENE of Bainbridge Island, Washington · 13034 days ago · 18 km deep · 63 km away
  9. 1.812 km NE of Hoodsport, Washington · 13034 days ago · 14 km deep · 81 km away
  10. 2.85 km ENE of Deming, Washington · 13034 days ago · 1 km deep · 86 km away
  11. 1.90 km NNE of Clyde Hill, Washington · 13026 days ago · 24 km deep · 71 km away
  12. 2.01 km S of Anacortes, Washington · 13022 days ago · 10 km deep · 37 km away
  13. 1.92 km ESE of Belfair, Washington · 13018 days ago · 22 km deep · 81 km away
  14. 1.61 km E of Edmonds, Washington · 13012 days ago · 21 km deep · 49 km away
  15. 2.24 km W of Lake Marcel-Stillwater, Washington · 13010 days ago · 0 km deep · 78 km away
  16. 2.51 km NNE of Bellevue, Washington · 13009 days ago · 24 km deep · 73 km away

Before

  1. 1.73 km NNE of Home, Washington · 13069 days ago · 16 km deep · 97 km away
  2. 1.71 km W of Mount Vernon, Washington · 13074 days ago · 7 km deep · 39 km away
  3. 1.53 km WSW of Wauna, Washington · 13077 days ago · 20 km deep · 89 km away
  4. 1.813 km ENE of North Saanich, Canada · 13079 days ago · 22 km deep · 70 km away
  5. 2.51 km NW of Brier, Washington · 13079 days ago · 18 km deep · 54 km away
  6. 2.01 km SW of Meadowdale, Washington · 13090 days ago · 24 km deep · 47 km away
  7. 1.64 km SE of Freeland, Washington · 13095 days ago · 23 km deep · 28 km away
  8. 2.618 km NNE of Hamilton, Washington · 13098 days ago · -1 km deep · 83 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10272218 (also filed as usp0004jju). Read Fri, Oct 2, 2026, 7:20 AM UTC.