Washington earthquakes

M2.1 earthquake 21 km SW of Easton, Washington

A magnitude 2.1 earthquake struck 21 km SW of Easton, Washington on Fri, Mar 22, 1991, 11:43 AM PST (19:43 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M3.0 10 km E of Ashford, 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
2.1 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1991-03-22 19:43:48 UTC
Depth
-0.8 km (-0.5 mi), shallow
Epicenter
47.080° N, 121.351° 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 0.7 km horizontally, 4.7 km in depth
Magnitude uncertainty
±0.06
Depth from
Operator assigned
Station coverage gap
53°
Stations used
53

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 13 in the 30 days before it.

After

  1. 2.62 km W of Maple Valley, Washington · 12977 days ago · 5 km deep · 65 km away
  2. 1.722 km ENE of Ashford, Washington · 12969 days ago · -2 km deep · 41 km away
  3. 1.922 km ENE of Ashford, Washington · 12968 days ago · -2 km deep · 41 km away
  4. 1.522 km ENE of Ashford, Washington · 12964 days ago · -1 km deep · 41 km away
  5. 2.013 km SSW of Alder, Washington · 12960 days ago · 16 km deep · 87 km away
  6. 1.520 km NNW of Packwood, Washington · 12959 days ago · -1 km deep · 44 km away
  7. 2.32 km SSW of West Lake Sammamish, Washington · 12957 days ago · 12 km deep · 78 km away
  8. 1.912 km S of Leavenworth, Washington · 12953 days ago · -1 km deep · 68 km away
  9. 1.633 km ESE of Packwood, Washington · 12948 days ago · -1 km deep · 71 km away
  10. 1.515 km E of Kittitas, Washington · 12938 days ago · 8 km deep · 87 km away
  11. 1.514 km E of Wilkeson, Washington · 12936 days ago · 7 km deep · 38 km away
  12. 1.614 km E of Wilkeson, Washington · 12936 days ago · 7 km deep · 39 km away
  13. 2.01 km SSE of Normandy Park, WA · 12935 days ago · 13 km deep · 84 km away
  14. 1.52 km S of May Creek, Washington · 12931 days ago · 0 km deep · 87 km away
  15. 2.123 km NE of Ashford, Washington · 12928 days ago · -1 km deep · 40 km away
  16. 3.010 km E of Ashford, Washington · 12923 days ago · 10 km deep · 54 km away

Before

  1. 1.91 km WNW of Maple Valley, Washington · 12979 days ago · 7 km deep · 65 km away
  2. 2.410 km SSE of Mineral, Washington · 12981 days ago · 15 km deep · 78 km away
  3. 2.71 km SE of Ames Lake, Washington · 12982 days ago · 22 km deep · 75 km away
  4. 2.10 km W of Normandy Park, Washington · 12985 days ago · 18 km deep · 85 km away
  5. 2.02 km WNW of Maple Valley, Washington · 12987 days ago · 3 km deep · 66 km away
  6. 1.66 km ENE of Naches, Washington · 12988 days ago · 6 km deep · 67 km away
  7. 1.67 km ENE of Naches, Washington · 12988 days ago · 6 km deep · 68 km away
  8. 1.810 km ENE of Ashford, Washington · 12997 days ago · -1 km deep · 53 km away
  9. 1.53 km WSW of North Bend, Washington · 12999 days ago · 19 km deep · 58 km away
  10. 1.72 km SE of Ames Lake, Washington · 13000 days ago · 21 km deep · 75 km away
  11. 2.610 km SSE of Mineral, Washington · 13004 days ago · 14 km deep · 78 km away
  12. 1.911 km SW of Ellensburg, Washington · 13004 days ago · 7 km deep · 56 km away
  13. 3.215 km NNE of Naches, Washington · 13005 days ago · 12 km deep · 58 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10273003. Read Fri, Oct 2, 2026, 12:19 AM UTC.