Washington earthquakes

M1.6 earthquake 2 km SW of Roosevelt, Washington

A magnitude 1.6 earthquake struck 2 km SW of Roosevelt, Washington on Sun, Mar 31, 1991, 2:30 PM PST (22:30 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M3.1 55 km WNW of Granite Falls, Washington. This one was a foreshock.

Monroe North 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
1.6 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1991-03-31 22:30:22 UTC
Depth
16.2 km (10.1 mi), shallow
Epicenter
47.874° N, 122.039° 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 0.4 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
79°
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 18 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 2.05 km SSW of Clinton, Washington · 12967 days ago · 23 km deep · 27 km away
  2. 2.32 km SSW of West Lake Sammamish, Washington · 12960 days ago · 12 km deep · 36 km away
  3. 2.40 km NW of Burlington, Washington · 12957 days ago · 15 km deep · 71 km away
  4. 1.60 km WSW of Burlington, Washington · 12956 days ago · 14 km deep · 70 km away
  5. 1.57 km W of Allyn, Washington · 12954 days ago · 14 km deep · 85 km away
  6. 2.05 km W of Concrete, Washington · 12953 days ago · 3 km deep · 75 km away
  7. 2.47 km S of Longbranch, Washington · 12948 days ago · 22 km deep · 98 km away
  8. 3.155 km WNW of Granite Falls, Washington · 12946 days ago · -1 km deep · 90 km away
  9. 1.514 km E of Wilkeson, Washington · 12940 days ago · 7 km deep · 87 km away
  10. 1.614 km E of Wilkeson, Washington · 12940 days ago · 7 km deep · 88 km away
  11. 2.456 km WNW of Granite Falls, Washington · 12939 days ago · 5 km deep · 92 km away
  12. 1.5Washington · 12939 days ago · -1 km deep · 74 km away
  13. 2.01 km SSE of Normandy Park, WA · 12938 days ago · 13 km deep · 55 km away
  14. 1.52 km SE of Lake Roesiger, Washington · 12938 days ago · 17 km deep · 14 km away
  15. 1.52 km S of May Creek, Washington · 12934 days ago · 0 km deep · 28 km away
  16. 1.75 km ESE of Carbonado, Washington · 12917 days ago · 10 km deep · 90 km away
  17. 2.08 km NE of Snoqualmie, Washington · 12917 days ago · 1 km deep · 40 km away
  18. 1.66 km SSE of Acme, WA · 12915 days ago · 20 km deep · 89 km away

Before

  1. 1.82 km NW of Warm Beach, Washington · 12977 days ago · 0 km deep · 44 km away
  2. 2.62 km W of Maple Valley, Washington · 12980 days ago · 5 km deep · 53 km away
  3. 1.91 km WNW of Maple Valley, Washington · 12982 days ago · 7 km deep · 53 km away
  4. 2.71 km SE of Ames Lake, Washington · 12985 days ago · 22 km deep · 29 km away
  5. 2.63 km WSW of Fox Island, Washington · 12986 days ago · 49 km deep · 85 km away
  6. 2.10 km W of Normandy Park, Washington · 12989 days ago · 18 km deep · 54 km away
  7. 2.02 km WNW of Maple Valley, Washington · 12990 days ago · 3 km deep · 53 km away
  8. 2.36 km WSW of Lake Cavanaugh, Washington · 12991 days ago · 2 km deep · 49 km away
  9. 1.54 km WSW of Erlands Point-Kitsap Lake, Washington · 12998 days ago · 17 km deep · 63 km away
  10. 2.53 km WSW of Erlands Point-Kitsap Lake, Washington · 12998 days ago · 17 km deep · 62 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10273858. Read Mon, Oct 5, 2026, 5:28 AM UTC.