Washington earthquakes

M1.6 earthquake 37 km NNE of Amboy, Washington

A magnitude 1.6 earthquake struck 37 km NNE of Amboy, Washington on Wed, May 15, 1991, 3:38 PM PDT (22:38 UTC), 3 km (2 mi) below the surface.

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

Amboy forecastMore in Washington

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
1.6 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1991-05-15 22:38:37 UTC
Depth
2.6 km (1.6 mi), shallow
Epicenter
46.200° N, 122.188° 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 0.3 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
54°
Stations used
33

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 3.010 km E of Ashford, Washington · 12924 days ago · 10 km deep · 66 km away
  2. 1.75 km ESE of Carbonado, Washington · 12915 days ago · 10 km deep · 98 km away
  3. 2.238 km SSE of Morton, WA · 12915 days ago · 11 km deep · 12 km away
  4. 1.737 km NNE of Amboy, Washington · 12915 days ago · -2 km deep · 1 km away
  5. 1.637 km NNE of Amboy, Washington · 12915 days ago · -2 km deep · 1 km away
  6. 1.628 km SW of White Swan, Washington · 12911 days ago · -1 km deep · 92 km away
  7. 1.637 km NNE of Amboy, Washington · 12900 days ago · -2 km deep · 1 km away
  8. 2.632 km NE of Amboy, Washington · 12890 days ago · 11 km deep · 16 km away
  9. 1.637 km NNE of Amboy, Washington · 12889 days ago · -1 km deep · 1 km away
  10. 2.122 km SSE of Greenwater, Washington · 12887 days ago · 10 km deep · 98 km away
  11. 2.623 km ENE of Ashford, Washington · 12887 days ago · -2 km deep · 81 km away
  12. 1.619 km S of Morton, Washington · 12885 days ago · 12 km deep · 21 km away
  13. 2.028 km ENE of Ashford, Washington · 12883 days ago · -1 km deep · 85 km away
  14. 2.010 km SSE of Mineral, Washington · 12882 days ago · 14 km deep · 48 km away
  15. 1.86 km WNW of Scappoose, Oregon · 12874 days ago · 16 km deep · 75 km away
  16. 1.631 km NNE of Amboy, Washington · 12873 days ago · 9 km deep · 12 km away
  17. 2.037 km NNE of Amboy, Washington · 12866 days ago · -2 km deep · 1 km away

Before

  1. 2.123 km NE of Ashford, Washington · 12929 days ago · -1 km deep · 83 km away
  2. 1.638 km NNE of Amboy, Washington · 12931 days ago · -1 km deep · 0 km away
  3. 1.937 km NNE of Amboy, Washington · 12945 days ago · -2 km deep · 1 km away
  4. 1.54 km NE of La Center, Washington · 12946 days ago · 15 km deep · 48 km away
  5. 1.633 km ESE of Packwood, Washington · 12949 days ago · -1 km deep · 73 km away

Earthquakes todayWashington earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10276728. Read Fri, Oct 2, 2026, 7:02 PM UTC.