Washington earthquakes

M1.9 earthquake 22 km S of Morton, Washington

A magnitude 1.9 earthquake struck 22 km S of Morton, Washington on Tue, May 3, 1988, 10:59 AM PDT (17:59 UTC), 10 km (7 mi) below the surface.

Morton 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
1988-05-03 17:59:48 UTC
Depth
10.5 km (6.5 mi), shallow
Epicenter
46.355° N, 122.247° 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
±0.04
Depth from
From location
Station coverage gap
41°
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: 12 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 1.541 km SSE of Morton, Washington · 14024 days ago · 0 km deep · 24 km away
  2. 1.519 km SSE of Carbonado, Washington · 14020 days ago · 11 km deep · 67 km away
  3. 1.537 km NNE of Amboy, Washington · 14013 days ago · -2 km deep · 18 km away
  4. 1.58 km WNW of North Portland, Oregon · 14013 days ago · 17 km deep · 89 km away
  5. 1.733 km SE of Morton, Washington · 14011 days ago · -1 km deep · 20 km away
  6. 1.610 km SSE of Mossyrock, Washington · 14011 days ago · 17 km deep · 19 km away
  7. 1.511 km S of Greenwater, Washington · 14006 days ago · 0 km deep · 90 km away
  8. 1.93 km W of Ryderwood, Washington · 14000 days ago · 52 km deep · 64 km away
  9. 1.78 km E of Yacolt, Washington · 13995 days ago · 5 km deep · 56 km away
  10. 1.812 km NE of Packwood, Washington · 13988 days ago · 1 km deep · 64 km away
  11. 1.712 km ESE of Ashford, Washington · 13984 days ago · 5 km deep · 51 km away
  12. 1.812 km SW of Packwood, Washington · 13975 days ago · 5 km deep · 40 km away

Before

  1. 1.524 km ENE of Ashford, Washington · 14030 days ago · -1 km deep · 68 km away
  2. 1.638 km NNE of Amboy, Washington · 14032 days ago · 3 km deep · 18 km away
  3. 1.738 km NNE of Amboy, Washington · 14035 days ago · 3 km deep · 18 km away
  4. 1.89 km S of Morton, Washington · 14039 days ago · 7 km deep · 14 km away
  5. 3.024 km ENE of Yacolt, Washington · 14051 days ago · 3 km deep · 45 km away
  6. 1.823 km ENE of Yacolt, Washington · 14051 days ago · 5 km deep · 46 km away
  7. 1.723 km ENE of Yacolt, Washington · 14051 days ago · 5 km deep · 47 km away
  8. 1.55 km SW of Packwood, Washington · 14059 days ago · 8 km deep · 47 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10229283. Read Thu, Oct 1, 2026, 9:18 AM UTC.