Washington earthquakes

M1.9 earthquake 22 km ENE of Ashford, Washington

A magnitude 1.9 earthquake struck 22 km ENE of Ashford, Washington on Sun, Mar 31, 1991, 12:16 PM PST (20:16 UTC), -2 km (-1 mi) below the surface.

A larger quake followed: M3.0 10 km E of Ashford, Washington. This one was a foreshock.

Carbonado 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
1.9 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1991-03-31 20:16:31 UTC
Depth
-1.6 km (-1.0 mi), shallow
Epicenter
46.849° N, 121.768° 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 0.1 km horizontally, 0.2 km in depth
Magnitude uncertainty
±0.08
Depth from
Operator assigned
Station coverage gap
145°
Stations used
4

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 20 in the 30 days before it.

After

  1. 1.522 km ENE of Ashford, Washington · 12967 days ago · -1 km deep · 1 km away
  2. 2.013 km SSW of Alder, Washington · 12963 days ago · 16 km deep · 48 km away
  3. 1.520 km NNW of Packwood, Washington · 12962 days ago · -1 km deep · 8 km away
  4. 2.32 km SSW of West Lake Sammamish, Washington · 12960 days ago · 12 km deep · 83 km away
  5. 1.633 km ESE of Packwood, Washington · 12951 days ago · -1 km deep · 58 km away
  6. 2.47 km S of Longbranch, Washington · 12948 days ago · 22 km deep · 83 km away
  7. 1.937 km NNE of Amboy, Washington · 12947 days ago · -2 km deep · 80 km away
  8. 1.514 km E of Wilkeson, Washington · 12940 days ago · 7 km deep · 28 km away
  9. 1.614 km E of Wilkeson, Washington · 12940 days ago · 7 km deep · 28 km away
  10. 2.01 km SSE of Normandy Park, WA · 12938 days ago · 13 km deep · 77 km away
  11. 1.638 km NNE of Amboy, Washington · 12933 days ago · -1 km deep · 79 km away
  12. 2.123 km NE of Ashford, Washington · 12931 days ago · -1 km deep · 6 km away
  13. 1.637 km NNE of Amboy, Washington · 12926 days ago · 3 km deep · 79 km away
  14. 3.010 km E of Ashford, Washington · 12926 days ago · 10 km deep · 14 km away
  15. 1.75 km ESE of Carbonado, Washington · 12917 days ago · 10 km deep · 29 km away
  16. 2.238 km SSE of Morton, WA · 12917 days ago · 11 km deep · 70 km away
  17. 1.737 km NNE of Amboy, Washington · 12917 days ago · -2 km deep · 80 km away
  18. 1.637 km NNE of Amboy, Washington · 12917 days ago · -2 km deep · 79 km away
  19. 2.08 km NE of Snoqualmie, Washington · 12917 days ago · 1 km deep · 81 km away
  20. 1.628 km SW of White Swan, Washington · 12913 days ago · -1 km deep · 94 km away

Before

  1. 1.722 km ENE of Ashford, Washington · 12972 days ago · -2 km deep · 0 km away
  2. 2.324 km S of Morton, Washington · 12973 days ago · 11 km deep · 67 km away
  3. 1.719 km S of Morton, Washington · 12979 days ago · 6 km deep · 66 km away
  4. 2.62 km W of Maple Valley, Washington · 12980 days ago · 5 km deep · 65 km away
  5. 2.121 km SW of Easton, Washington · 12980 days ago · -1 km deep · 41 km away
  6. 1.636 km NNE of Amboy, Washington · 12980 days ago · -1 km deep · 80 km away
  7. 2.438 km NNE of Amboy, Washington · 12980 days ago · -1 km deep · 78 km away
  8. 1.835 km NNE of Amboy, Washington · 12981 days ago · -1 km deep · 81 km away
  9. 2.138 km NNE of Amboy, Washington · 12981 days ago · 1 km deep · 78 km away
  10. 1.91 km WNW of Maple Valley, Washington · 12982 days ago · 7 km deep · 65 km away
  11. 1.816 km S of Morton, Washington · 12983 days ago · 10 km deep · 61 km away
  12. 2.410 km SSE of Mineral, Washington · 12984 days ago · 15 km deep · 37 km away
  13. 2.71 km SE of Ames Lake, Washington · 12985 days ago · 22 km deep · 87 km away
  14. 2.63 km WSW of Fox Island, Washington · 12986 days ago · 49 km deep · 81 km away
  15. 1.525 km S of Morton, Washington · 12987 days ago · 8 km deep · 68 km away
  16. 2.10 km W of Normandy Park, Washington · 12989 days ago · 18 km deep · 79 km away
  17. 2.02 km WNW of Maple Valley, Washington · 12990 days ago · 3 km deep · 66 km away
  18. 1.66 km ENE of Naches, Washington · 12991 days ago · 6 km deep · 89 km away
  19. 1.67 km ENE of Naches, Washington · 12991 days ago · 6 km deep · 89 km away
  20. 1.810 km ENE of Ashford, Washington · 13000 days ago · -1 km deep · 12 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10273848. Read Mon, Oct 5, 2026, 3:28 AM UTC.